Commit Graph

26890 Commits

Author SHA1 Message Date
Uwe Kleine-König
e2064de2f3 powerpc: fsl_msi: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/42d8e3721053dce21ea373a24cb37fb0f59eed26.1708529736.git.u.kleine-koenig@pengutronix.de
2024-02-22 21:55:33 +11:00
Uwe Kleine-König
18a4a2612b powerpc: papr_scm: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/34847d756453af2e85e5944a8cc2e2c21aacc905.1708529736.git.u.kleine-koenig@pengutronix.de
2024-02-22 21:55:33 +11:00
Uwe Kleine-König
ca899c1221 powerpc: opal-prd: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/28dd12b7cbde4b278b8b1d0ae4382dbd8ce9c9c5.1708529736.git.u.kleine-koenig@pengutronix.de
2024-02-22 21:55:32 +11:00
Uwe Kleine-König
b1cd248f42 powerpc: gpio_mdio: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/8a5ac8044578694879e919322dbd46f140b64950.1708529736.git.u.kleine-koenig@pengutronix.de
2024-02-22 21:55:32 +11:00
Uwe Kleine-König
9d16a8591a powerpc: sgy_cts1000: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/1e8396078942d9e46e56d70ed2f749a76391c381.1708529736.git.u.kleine-koenig@pengutronix.de
2024-02-22 21:55:32 +11:00
Geoff Levand
914d081ead Revert "powerpc/ps3_defconfig: Disable PPC64_BIG_ENDIAN_ELF_ABI_V2"
This reverts commit 482b718a84.

The preceding commits by Nicholas Piggin enable PS3 support for ELFv2,
so there's no need to disable it for PS3 anymore.

Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/983836405df1b6001a2262972fb32d1aee97d6f5.1705654669.git.geoff@infradead.org
2024-02-21 23:15:26 +11:00
Nicholas Piggin
28b2ed8675 powerpc/ps3: Make real stack frames for LV1 hcalls
The PS3 hcall assembly code makes ad-hoc stack frames that don't have
a back-chain pointer or meet other requirements like minimum frame size.
This probably confuses stack unwinders. Give all hcalls a real stack
frame.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Geoff Levand <geoff@infradead.org>
[mpe: Add missing \ in LV1_2_IN_4_OUT]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231227072405.63751-4-npiggin@gmail.com
2024-02-21 23:14:52 +11:00
Nicholas Piggin
d901473c4d powerpc/ps3: lv1 hcall code use symbolic constant for LR save offset
The LRSAVE constant is required for assembly compiled for both 32-bit
and 64-bit, because the value differs there. PS3 is 64-bit only so
this is a noop, but it is nice to abstract stack frame offsets.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231227072405.63751-3-npiggin@gmail.com
2024-02-21 23:14:52 +11:00
Nicholas Piggin
6735fef14c powerpc/ps3: Fix lv1 hcall assembly for ELFv2 calling convention
Stack-passed parameters begin at a different offset in the caller's
stack in the ELFv2 ABI.

Reported-by: Geoff Levand <geoff@infradead.org>
Fixes: 8c5fa3b5c4 ("powerpc/64: Make ELFv2 the default for big-endian builds")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231227072405.63751-2-npiggin@gmail.com
2024-02-21 23:14:52 +11:00
Nicholas Piggin
6e9de2054e powerpc/pseries: Set CPU_FTR_DBELL according to ibm,pi-features
PAPR will define a new ibm,pi-features bit which says that doorbells
should not be used even on architectures where they exist. This could be
because they are emulated and slower than using the interrupt controller
directly for IPIs.

Wire this bit into the pi-features parser to clear CPU_FTR_DBELL, and
ensure CPU_FTR_DBELL is not in CPU_FTRS_ALWAYS.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240207035220.339726-2-npiggin@gmail.com
2024-02-21 23:14:52 +11:00
Nicholas Piggin
8b33806106 powerpc/pseries: Add a clear modifier to ibm,pa/pi-features parser
When a new ibm,pa/pi-features bit is introduced that is intended to
apply to existing systems and features, it may have an "inverted"
meaning (i.e., bit clear => feature available; bit set => unavailable).
Depending on the nature of the feature, this may give the best
backward compatibility result where old firmware will continue to
have that bit clear and therefore the feature available.

The 'invert' modifier presumably was introduced for this type of
feature bit. However it invert will set the feature if the bit is
clear, which prevents it being used in the situation where an old
CPU lacks a feature that a new CPU has, then a new firmware comes
out to disable that feature on the new CPU if the bit is set.
Adding an 'invert' entry for that feature would incorrectly enable
it for the old CPU.

So add a 'clear' modifier that clears the feature if the bit is set,
but it does not set the feature if the bit is clear. The feature
is expected to be set in the cpu table.

This replaces the 'invert' modifier, which is unused since commit
7d47034551 ("powerpc/feature: Remove CPU_FTR_NODSISRALIGN").

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240207035220.339726-1-npiggin@gmail.com
2024-02-21 23:14:49 +11:00
Madhavan Srinivasan
b22ea62722 powerpc/perf: Power11 Performance Monitoring support
Base enablement patch to register performance monitoring
hardware support for Power11. Most of fields are copied
from power10_pmu struct for power11_pmu struct.

Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240221044623.1598642-2-mpe@ellerman.id.au
2024-02-21 23:11:00 +11:00
Madhavan Srinivasan
c2ed087ed3 powerpc: Add Power11 architected and raw mode
Add CPU table entries for raw and architected mode. Most fields are
copied from the Power10 table entries.

CPU, MMU and user (ELF_HWCAP) features are unchanged vs P10. However
userspace can detect P11 because the AT_PLATFORM value changes to
"power11".

The logical PVR value of 0x0F000007, passed to firmware via the
ibm_arch_vec, indicates the kernel can support a P11 compatible CPU,
which means at least ISA v3.1 compliant.

Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240221044623.1598642-1-mpe@ellerman.id.au
2024-02-21 23:11:00 +11:00
Shrikanth Hegde
8c328de8fd powerpc: Remove duplicate/unnecessary ifdefs
When an ifdef is used in the below manner, second one could be considered
as duplicate.

  ifdef DEFINE_A
  ...code block...
  ifdef DEFINE_A       <-- This is a duplicate.
  ...code block...
  endif
  else
  ifndef DEFINE_A     <-- This is also duplicate.
  ...code block...
  endif
  endif

More details about the script and methods used to find these code
patterns are in cover letter of [1].

Few places in arch/powerpc where this pattern was seen:

  paca.h:
  Hunk1: Code is under check of CONFIG_PPC64 from line 13, hence the
  second CONFIG_PPC64 at line 166 is a duplicate.
  Hunk2: CONFIG_PPC_BOOK3S_64 was defined back to back. Merged the two
  ifdefs.

  asm-offsets.c:
  Code is under check of CONFIG_PPC64 from line 176 hence second
  CONFIG_PPC64 at line 249 is a duplicate.

  powermac/feature.c:
  #ifndef CONFIG_PPC64 is used at line 2066. And then in #else again
  #ifdef CONFIG_PPC64 is used. Which is a duplicate since in #else means
  CONFIG_PPC64 is defined.

  xmon.c:
  Code is under the check of CONFIG_SMP from line 521 hence the same
  check of CONFIG_SMP at line 646 is a duplicate.

No functional change is intended here. It only aims to improve code
readability.

[1] https://lore.kernel.org/all/20240118080326.13137-1-sshegde@linux.ibm.com/

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240216053016.528906-1-sshegde@linux.ibm.com
2024-02-21 15:15:40 +11:00
Masahiro Yamada
97a5253d7c powerpc: remove unused KCSAN_SANITIZE_early_64.o in Makefile
Commit 2fb857bc9f ("powerpc/kcsan: Add exclusions from instrumentation")
added KCSAN_SANITIZE_early_64.o to arch/powerpc/kernel/Makefile, while
it does not compile early_64.o.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240216135817.2003106-1-masahiroy@kernel.org
2024-02-19 16:16:58 +11:00
Ricardo B. Marliere
14ce0dbb56 powerpc: ibmebus: make ibmebus_bus_type const
Since commit d492cc2573 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the ibmebus_bus_type variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-5-8441b3f77827@marliere.net
2024-02-15 00:14:06 +11:00
Ricardo B. Marliere
112202f34e powerpc: pmac: make macio_bus_type const
Since commit d492cc2573 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the macio_bus_type variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-4-8441b3f77827@marliere.net
2024-02-15 00:14:06 +11:00
Ricardo B. Marliere
8e3d0b8d99 powerpc: mpic: make mpic_subsys const
Since commit d492cc2573 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the mpic_subsys variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-3-8441b3f77827@marliere.net
2024-02-15 00:14:06 +11:00
Ricardo B. Marliere
565206aaa6 powerpc: vio: make vio_bus_type const
Since commit d492cc2573 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the vio_bus_type variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-2-8441b3f77827@marliere.net
2024-02-15 00:14:06 +11:00
Ricardo B. Marliere
e15d01277a powerpc: vio: move device attributes into a new ifdef
In order to make the distinction of the vio_bus_type variable based on
CONFIG_PPC_SMLPAR more explicit, move the required structs into a new
ifdef block. This is needed in order to make vio_bus_type const and
because the distinction is made explicit, there is no need to set the
fields within the vio_cmo_sysfs_init function.

Signed-off-by: "Ricardo B. Marliere" <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240212-bus_cleanup-powerpc2-v2-1-8441b3f77827@marliere.net
2024-02-15 00:14:05 +11:00
Christophe Leroy
c5aebb53b3 powerpc: Force inlining of arch_vmap_p{u/m}d_supported()
arch_vmap_pud_supported() and arch_vmap_pmd_supported() are
expected to constant-fold to false when RADIX is not enabled.

Force inlining in order to avoid following failure which
leads to unexpected call of non-existing pud_set_huge() and
pmd_set_huge() on powerpc 8xx.

In function 'pud_huge_tests',
    inlined from 'debug_vm_pgtable' at mm/debug_vm_pgtable.c:1399:2:
./arch/powerpc/include/asm/vmalloc.h:9:33: warning: inlining failed in call to 'arch_vmap_pud_supported.isra': call is unlikely and code size would grow [-Winline]
    9 | #define arch_vmap_pud_supported arch_vmap_pud_supported
      |                                 ^~~~~~~~~~~~~~~~~~~~~~~
./arch/powerpc/include/asm/vmalloc.h:10:20: note: in expansion of macro 'arch_vmap_pud_supported'
   10 | static inline bool arch_vmap_pud_supported(pgprot_t prot)
      |                    ^~~~~~~~~~~~~~~~~~~~~~~
./arch/powerpc/include/asm/vmalloc.h:9:33: note: called from here
    9 | #define arch_vmap_pud_supported arch_vmap_pud_supported
mm/debug_vm_pgtable.c:458:14: note: in expansion of macro 'arch_vmap_pud_supported'
  458 |         if (!arch_vmap_pud_supported(args->page_prot) ||
      |              ^~~~~~~~~~~~~~~~~~~~~~~

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202402131836.OU1TDuoi-lkp@intel.com/
Fixes: 8309c9d717 ("powerpc: inline huge vmap supported functions")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/bbd84ad52bf377e8d3b5865a906f2dc5d99964ba.1707832677.git.christophe.leroy@csgroup.eu
2024-02-15 00:14:05 +11:00
Michael Ellerman
0875f1ceba powerpc/smp: Remap boot CPU onto core 0 if >= nr_cpu_ids
If nr_cpu_ids is too low to include the boot CPU, remap the boot CPU
onto logical core 0.

This is achieved in two stages. In early_init_dt_scan_cpus() the boot
CPU is renumbered to be on logical core 0, and the original boot core's
hardware ID is recorded.

Later in smp_setup_cpu_maps(), if the original boot core ID is set, the
logical CPU numbers on the 0th core are skipped in the normal device
tree search over CPU device tree nodes. Then the search is continued
until the device tree node matching the boot core is found, and those
CPUs are assigned the CPU numbers starting at 0.

This allows kdump kernels to be booted with low values for nr_cpu_ids
to conserve memory, while also allowing the crashing/boot CPU to be
any CPU.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Wen Xiong <wenxiong@us.ibm.com>
Link: https://msgid.link/20231229120107.2281153-5-mpe@ellerman.id.au
2024-02-15 00:14:05 +11:00
Michael Ellerman
9832de6544 powerpc/smp: Factor out assign_threads()
Factor out the for loop that assigns CPU numbers to threads of a core.
The function takes the next CPU number to use as input, and returns the
next available CPU number after the threads has been assigned.

This will allow a subsequent change to assign threads out of order.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231229120107.2281153-4-mpe@ellerman.id.au
2024-02-15 00:14:05 +11:00
Michael Ellerman
dca79603fb powerpc/smp: Lookup avail once per device tree node
The of_device_is_available() check only needs to be done once per device
node, there's no need to repeat it for each thread. Move it out of the
loop.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231229120107.2281153-3-mpe@ellerman.id.au
2024-02-15 00:14:04 +11:00
Michael Ellerman
777f81f0a9 powerpc/smp: Increase nr_cpu_ids to include the boot CPU
If nr_cpu_ids is too low to include the boot CPU adjust nr_cpu_ids
upward. Otherwise the kernel will BUG when trying to allocate a paca
for the boot CPU and fail to boot.

Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231229120107.2281153-2-mpe@ellerman.id.au
2024-02-15 00:14:04 +11:00
Michael Ellerman
5580e96dad powerpc/smp: Adjust nr_cpu_ids to cover all threads of a core
If nr_cpu_ids is too low to include at least all the threads of a single
core adjust nr_cpu_ids upwards. This avoids triggering odd bugs in code
that assumes all threads of a core are available.

Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231229120107.2281153-1-mpe@ellerman.id.au
2024-02-15 00:14:04 +11:00
Linus Torvalds
7b297a5cc9 powerpc fixes for 6.8 #2
- 18f14afe28 powerpc/64s: Increase default stack size to 32KB BY: Michael Ellerman
 
 Thanks to:
 Michael Ellerman
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Merge tag 'powerpc-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Aneesh Kumar:

 - Increase default stack size to 32KB for Book3S

Thanks to Michael Ellerman.

* tag 'powerpc-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Increase default stack size to 32KB
2024-01-21 11:04:29 -08:00
Linus Torvalds
bd736f38c0 TTY/Serial changes for 6.8-rc1
Here is the big set of tty and serial driver changes for 6.8-rc1.
 
 As usual, Jiri has a bunch of refactoring and cleanups for the tty core
 and drivers in here, along with the usual set of rs485 updates (someday
 this might work properly...)  Along with those, in here are changes for:
   - sc16is7xx serial driver updates
   - platform driver removal api updates
   - amba-pl011 driver updates
   - tty driver binding updates
   - other small tty/serial driver updates and changes
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial updates from Greg KH:
 "Here is the big set of tty and serial driver changes for 6.8-rc1.

  As usual, Jiri has a bunch of refactoring and cleanups for the tty
  core and drivers in here, along with the usual set of rs485 updates
  (someday this might work properly...)

  Along with those, in here are changes for:

   - sc16is7xx serial driver updates

   - platform driver removal api updates

   - amba-pl011 driver updates

   - tty driver binding updates

   - other small tty/serial driver updates and changes

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (197 commits)
  serial: sc16is7xx: refactor EFR lock
  serial: sc16is7xx: reorder code to remove prototype declarations
  serial: sc16is7xx: refactor FIFO access functions to increase commonality
  serial: sc16is7xx: drop unneeded MODULE_ALIAS
  serial: sc16is7xx: replace hardcoded divisor value with BIT() macro
  serial: sc16is7xx: add explicit return for some switch default cases
  serial: sc16is7xx: add macro for max number of UART ports
  serial: sc16is7xx: add driver name to struct uart_driver
  serial: sc16is7xx: use i2c_get_match_data()
  serial: sc16is7xx: use spi_get_device_match_data()
  serial: sc16is7xx: use DECLARE_BITMAP for sc16is7xx_lines bitfield
  serial: sc16is7xx: improve do/while loop in sc16is7xx_irq()
  serial: sc16is7xx: remove obsolete loop in sc16is7xx_port_irq()
  serial: sc16is7xx: set safe default SPI clock frequency
  serial: sc16is7xx: add check for unsupported SPI modes during probe
  serial: sc16is7xx: fix invalid sc16is7xx_lines bitfield in case of probe error
  serial: 8250_exar: Set missing rs485_supported flag
  serial: omap: do not override settings for RS485 support
  serial: core, imx: do not set RS485 enabled if it is not supported
  serial: core: make sure RS485 cannot be enabled when it is not supported
  ...
2024-01-18 11:37:24 -08:00
Michael Ellerman
18f14afe28 powerpc/64s: Increase default stack size to 32KB
There are reports of kernels crashing due to stack overflow while
running OpenShift (Kubernetes). The primary contributor to the stack
usage seems to be openvswitch, which is used by OVN-Kubernetes (based on
OVN (Open Virtual Network)), but NFS also contributes in some stack
traces.

There may be some opportunities to reduce stack usage in the openvswitch
code, but doing so potentially require tradeoffs vs performance, and
also requires testing across architectures.

Looking at stack usage across the kernel (using -fstack-usage), shows
that ppc64le stack frames are on average 50-100% larger than the
equivalent function built for x86-64. Which is not surprising given the
minimum stack frame size is 32 bytes on ppc64le vs 16 bytes on x86-64.

So increase the default stack size to 32KB for the modern 64-bit Book3S
platforms, ie. pseries (virtualised) and powernv (bare metal). That
leaves the older systems like G5s, and the AmigaOne (pasemi) with a 16KB
stack which should be sufficient on those machines.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Aneesh Kumar K.V (IBM) <aneesh.kumar@kernel.org>
Link: https://msgid.link/20231215124449.317597-1-mpe@ellerman.id.au
2024-01-19 00:10:14 +05:30
Linus Torvalds
e1aa9df440 pci-v6.8-changes
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Merge tag 'pci-v6.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:

   - Reserve ECAM so we don't assign it to PCI BARs; this works around
     bugs where BIOS included ECAM in a PNP0A03 host bridge window,
     didn't reserve it via a PNP0C02 motherboard device, and didn't
     allocate space for SR-IOV VF BARs (Bjorn Helgaas)

   - Add MMCONFIG/ECAM debug logging (Bjorn Helgaas)

   - Rename 'MMCONFIG' to 'ECAM' to match spec usage (Bjorn Helgaas)

   - Log device type (Root Port, Switch Port, etc) during enumeration
     (Bjorn Helgaas)

   - Log bridges before downstream devices so the dmesg order is more
     logical (Bjorn Helgaas)

   - Log resource names (BAR 0, VF BAR 0, bridge window, etc)
     consistently instead of a mix of names and "reg 0x10" (Puranjay
     Mohan, Bjorn Helgaas)

   - Fix 64GT/s effective data rate calculation to use 1b/1b encoding
     rather than the 8b/10b or 128b/130b used by lower rates (Ilpo
     Järvinen)

   - Use PCI_HEADER_TYPE_* instead of literals in x86, powerpc, SCSI
     lpfc (Ilpo Järvinen)

   - Clean up open-coded PCIBIOS return code mangling (Ilpo Järvinen)

  Resource management:

   - Restructure pci_dev_for_each_resource() to avoid computing the
     address of an out-of-bounds array element (the bounds check was
     performed later so the element was never actually *read*, but it's
     nicer to avoid even computing an out-of-bounds address) (Andy
     Shevchenko)

  Driver binding:

   - Convert pci-host-common.c platform .remove() callback to
     .remove_new() returning 'void' since it's not useful to return
     error codes here (Uwe Kleine-König)

   - Convert exynos, keystone, kirin from .remove() to .remove_new(),
     which returns void instead of int (Uwe Kleine-König)

   - Drop unused struct pci_driver.node member (Mathias Krause)

  Virtualization:

   - Add ACS quirk for more Zhaoxin Root Ports (LeoLiuoc)

  Error handling:

   - Log AER errors as "Correctable" (not "Corrected") or
     "Uncorrectable" to match spec terminology (Bjorn Helgaas)

   - Decode Requester ID when no error info found instead of printing
     the raw hex value (Bjorn Helgaas)

  Endpoint framework:

   - Use a unique test pattern for each BAR in the pci_endpoint_test to
     make it easier to debug address translation issues (Niklas Cassel)

  Broadcom STB PCIe controller driver:

   - Add DT property "brcm,clkreq-mode" and driver support for different
     CLKREQ# modes to make ASPM L1.x states possible (Jim Quinlan)

  Freescale Layerscape PCIe controller driver:

   - Add suspend/resume support for Layerscape LS1043a and LS1021a,
     including software-managed PME_Turn_Off and transitions between L0,
     L2/L3_Ready Link states (Frank Li)

  MediaTek PCIe controller driver:

   - Clear MSI interrupt status before handler to avoid missing MSIs
     that occur after the handler (qizhong cheng)

  MediaTek PCIe Gen3 controller driver:

   - Update mediatek-gen3 translation window setup to handle MMIO space
     that is not a power of two in size (Jianjun Wang)

  Qualcomm PCIe controller driver:

   - Increase qcom iommu-map maxItems to accommodate SDX55 (five
     entries) and SDM845 (sixteen entries) (Krzysztof Kozlowski)

   - Describe qcom,pcie-sc8180x clocks and resets accurately (Krzysztof
     Kozlowski)

   - Describe qcom,pcie-sm8150 clocks and resets accurately (Krzysztof
     Kozlowski)

   - Correct the qcom "reset-name" property, previously incorrectly
     called "reset-names" (Krzysztof Kozlowski)

   - Document qcom,pcie-sm8650, based on qcom,pcie-sm8550 (Neil
     Armstrong)

  Renesas R-Car PCIe controller driver:

   - Replace of_device.h with explicit of.h include to untangle header
     usage (Rob Herring)

   - Add DT and driver support for optional miniPCIe 1.5v and 3.3v
     regulators on KingFisher (Wolfram Sang)

  SiFive FU740 PCIe controller driver:

   - Convert fu740 CONFIG_PCIE_FU740 dependency from SOC_SIFIVE to
     ARCH_SIFIVE (Conor Dooley)

  Synopsys DesignWare PCIe controller driver:

   - Align iATU mapping for endpoint MSI-X (Niklas Cassel)

   - Drop "host_" prefix from struct dw_pcie_host_ops members (Yoshihiro
     Shimoda)

   - Drop "ep_" prefix from struct dw_pcie_ep_ops members (Yoshihiro
     Shimoda)

   - Rename struct dw_pcie_ep_ops.func_conf_select() to
     .get_dbi_offset() to be more descriptive (Yoshihiro Shimoda)

   - Add Endpoint DBI accessors to encapsulate offset lookups (Yoshihiro
     Shimoda)

  TI J721E PCIe driver:

   - Add j721e DT and driver support for 'num-lanes' for devices that
     support x1, x2, or x4 Links (Matt Ranostay)

   - Add j721e DT compatible strings and driver support for j784s4 (Matt
     Ranostay)

   - Make TI J721E Kconfig depend on ARCH_K3 since the hardware is
     specific to those TI SoC parts (Peter Robinson)

  TI Keystone PCIe controller driver:

   - Hold power management references to all PHYs while enabling them to
     avoid a race when one provides clocks to others (Siddharth
     Vadapalli)

  Xilinx XDMA PCIe controller driver:

   - Remove redundant dev_err(), since platform_get_irq() and
     platform_get_irq_byname() already log errors (Yang Li)

   - Fix uninitialized symbols in xilinx_pl_dma_pcie_setup_irq()
     (Krzysztof Wilczyński)

   - Fix xilinx_pl_dma_pcie_init_irq_domain() error return when
     irq_domain_add_linear() fails (Harshit Mogalapalli)

  MicroSemi Switchtec management driver:

   - Do dma_mrpc cleanup during switchtec_pci_remove() to match its devm
     ioremapping in switchtec_pci_probe(). Previously the cleanup was
     done in stdev_release(), which used stale pointers if stdev->cdev
     happened to be open when the PCI device was removed (Daniel
     Stodden)

  Miscellaneous:

   - Convert interrupt terminology from "legacy" to "INTx" to be more
     specific and match spec terminology (Damien Le Moal)

   - In dw-xdata-pcie, pci_endpoint_test, and vmd, replace usage of
     deprecated ida_simple_*() API with ida_alloc() and ida_free()
     (Christophe JAILLET)"

* tag 'pci-v6.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (97 commits)
  PCI: Fix kernel-doc issues
  PCI: brcmstb: Configure HW CLKREQ# mode appropriate for downstream device
  dt-bindings: PCI: brcmstb: Add property "brcm,clkreq-mode"
  PCI: mediatek-gen3: Fix translation window size calculation
  PCI: mediatek: Clear interrupt status before dispatching handler
  PCI: keystone: Fix race condition when initializing PHYs
  PCI: xilinx-xdma: Fix error code in xilinx_pl_dma_pcie_init_irq_domain()
  PCI: xilinx-xdma: Fix uninitialized symbols in xilinx_pl_dma_pcie_setup_irq()
  PCI: rcar-gen4: Fix -Wvoid-pointer-to-enum-cast error
  PCI: iproc: Fix -Wvoid-pointer-to-enum-cast warning
  PCI: dwc: Add dw_pcie_ep_{read,write}_dbi[2] helpers
  PCI: dwc: Rename .func_conf_select to .get_dbi_offset in struct dw_pcie_ep_ops
  PCI: dwc: Rename .ep_init to .init in struct dw_pcie_ep_ops
  PCI: dwc: Drop host prefix from struct dw_pcie_host_ops members
  misc: pci_endpoint_test: Use a unique test pattern for each BAR
  PCI: j721e: Make TI J721E depend on ARCH_K3
  PCI: j721e: Add TI J784S4 PCIe configuration
  PCI/AER: Use explicit register sizes for struct members
  PCI/AER: Decode Requester ID when no error info found
  PCI/AER: Use 'Correctable' and 'Uncorrectable' spec terms for errors
  ...
2024-01-17 16:23:17 -08:00
Linus Torvalds
09d1c6a80f Generic:
- Use memdup_array_user() to harden against overflow.
 
 - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures.
 
 - Clean up Kconfigs that all KVM architectures were selecting
 
 - New functionality around "guest_memfd", a new userspace API that
   creates an anonymous file and returns a file descriptor that refers
   to it.  guest_memfd files are bound to their owning virtual machine,
   cannot be mapped, read, or written by userspace, and cannot be resized.
   guest_memfd files do however support PUNCH_HOLE, which can be used to
   switch a memory area between guest_memfd and regular anonymous memory.
 
 - New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
   per-page attributes for a given page of guest memory; right now the
   only attribute is whether the guest expects to access memory via
   guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
   TDX or ARM64 pKVM is checked by firmware or hypervisor that guarantees
   confidentiality (AMD PSP, Intel TDX module, or EL2 in the case of pKVM).
 
 x86:
 
 - Support for "software-protected VMs" that can use the new guest_memfd
   and page attributes infrastructure.  This is mostly useful for testing,
   since there is no pKVM-like infrastructure to provide a meaningfully
   reduced TCB.
 
 - Fix a relatively benign off-by-one error when splitting huge pages during
   CLEAR_DIRTY_LOG.
 
 - Fix a bug where KVM could incorrectly test-and-clear dirty bits in non-leaf
   TDP MMU SPTEs if a racing thread replaces a huge SPTE with a non-huge SPTE.
 
 - Use more generic lockdep assertions in paths that don't actually care
   about whether the caller is a reader or a writer.
 
 - let Xen guests opt out of having PV clock reported as "based on a stable TSC",
   because some of them don't expect the "TSC stable" bit (added to the pvclock
   ABI by KVM, but never set by Xen) to be set.
 
 - Revert a bogus, made-up nested SVM consistency check for TLB_CONTROL.
 
 - Advertise flush-by-ASID support for nSVM unconditionally, as KVM always
   flushes on nested transitions, i.e. always satisfies flush requests.  This
   allows running bleeding edge versions of VMware Workstation on top of KVM.
 
 - Sanity check that the CPU supports flush-by-ASID when enabling SEV support.
 
 - On AMD machines with vNMI, always rely on hardware instead of intercepting
   IRET in some cases to detect unmasking of NMIs
 
 - Support for virtualizing Linear Address Masking (LAM)
 
 - Fix a variety of vPMU bugs where KVM fail to stop/reset counters and other state
   prior to refreshing the vPMU model.
 
 - Fix a double-overflow PMU bug by tracking emulated counter events using a
   dedicated field instead of snapshotting the "previous" counter.  If the
   hardware PMC count triggers overflow that is recognized in the same VM-Exit
   that KVM manually bumps an event count, KVM would pend PMIs for both the
   hardware-triggered overflow and for KVM-triggered overflow.
 
 - Turn off KVM_WERROR by default for all configs so that it's not
   inadvertantly enabled by non-KVM developers, which can be problematic for
   subsystems that require no regressions for W=1 builds.
 
 - Advertise all of the host-supported CPUID bits that enumerate IA32_SPEC_CTRL
   "features".
 
 - Don't force a masterclock update when a vCPU synchronizes to the current TSC
   generation, as updating the masterclock can cause kvmclock's time to "jump"
   unexpectedly, e.g. when userspace hotplugs a pre-created vCPU.
 
 - Use RIP-relative address to read kvm_rebooting in the VM-Enter fault paths,
   partly as a super minor optimization, but mostly to make KVM play nice with
   position independent executable builds.
 
 - Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
   CONFIG_HYPERV as a minor optimization, and to self-document the code.
 
 - Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV "emulation"
   at build time.
 
 ARM64:
 
 - LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB
   base granule sizes. Branch shared with the arm64 tree.
 
 - Large Fine-Grained Trap rework, bringing some sanity to the
   feature, although there is more to come. This comes with
   a prefix branch shared with the arm64 tree.
 
 - Some additional Nested Virtualization groundwork, mostly
   introducing the NV2 VNCR support and retargetting the NV
   support to that version of the architecture.
 
 - A small set of vgic fixes and associated cleanups.
 
 Loongarch:
 
 - Optimization for memslot hugepage checking
 
 - Cleanup and fix some HW/SW timer issues
 
 - Add LSX/LASX (128bit/256bit SIMD) support
 
 RISC-V:
 
 - KVM_GET_REG_LIST improvement for vector registers
 
 - Generate ISA extension reg_list using macros in get-reg-list selftest
 
 - Support for reporting steal time along with selftest
 
 s390:
 
 - Bugfixes
 
 Selftests:
 
 - Fix an annoying goof where the NX hugepage test prints out garbage
   instead of the magic token needed to run the test.
 
 - Fix build errors when a header is delete/moved due to a missing flag
   in the Makefile.
 
 - Detect if KVM bugged/killed a selftest's VM and print out a helpful
   message instead of complaining that a random ioctl() failed.
 
 - Annotate the guest printf/assert helpers with __printf(), and fix the
   various bugs that were lurking due to lack of said annotation.
 
 There are two non-KVM patches buried in the middle of guest_memfd support:
 
   fs: Rename anon_inode_getfile_secure() and anon_inode_getfd_secure()
   mm: Add AS_UNMOVABLE to mark mapping as completely unmovable
 
 The first is small and mostly suggested-by Christian Brauner; the second
 a bit less so but it was written by an mm person (Vlastimil Babka).
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "Generic:

   - Use memdup_array_user() to harden against overflow.

   - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all
     architectures.

   - Clean up Kconfigs that all KVM architectures were selecting

   - New functionality around "guest_memfd", a new userspace API that
     creates an anonymous file and returns a file descriptor that refers
     to it. guest_memfd files are bound to their owning virtual machine,
     cannot be mapped, read, or written by userspace, and cannot be
     resized. guest_memfd files do however support PUNCH_HOLE, which can
     be used to switch a memory area between guest_memfd and regular
     anonymous memory.

   - New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
     per-page attributes for a given page of guest memory; right now the
     only attribute is whether the guest expects to access memory via
     guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
     TDX or ARM64 pKVM is checked by firmware or hypervisor that
     guarantees confidentiality (AMD PSP, Intel TDX module, or EL2 in
     the case of pKVM).

  x86:

   - Support for "software-protected VMs" that can use the new
     guest_memfd and page attributes infrastructure. This is mostly
     useful for testing, since there is no pKVM-like infrastructure to
     provide a meaningfully reduced TCB.

   - Fix a relatively benign off-by-one error when splitting huge pages
     during CLEAR_DIRTY_LOG.

   - Fix a bug where KVM could incorrectly test-and-clear dirty bits in
     non-leaf TDP MMU SPTEs if a racing thread replaces a huge SPTE with
     a non-huge SPTE.

   - Use more generic lockdep assertions in paths that don't actually
     care about whether the caller is a reader or a writer.

   - let Xen guests opt out of having PV clock reported as "based on a
     stable TSC", because some of them don't expect the "TSC stable" bit
     (added to the pvclock ABI by KVM, but never set by Xen) to be set.

   - Revert a bogus, made-up nested SVM consistency check for
     TLB_CONTROL.

   - Advertise flush-by-ASID support for nSVM unconditionally, as KVM
     always flushes on nested transitions, i.e. always satisfies flush
     requests. This allows running bleeding edge versions of VMware
     Workstation on top of KVM.

   - Sanity check that the CPU supports flush-by-ASID when enabling SEV
     support.

   - On AMD machines with vNMI, always rely on hardware instead of
     intercepting IRET in some cases to detect unmasking of NMIs

   - Support for virtualizing Linear Address Masking (LAM)

   - Fix a variety of vPMU bugs where KVM fail to stop/reset counters
     and other state prior to refreshing the vPMU model.

   - Fix a double-overflow PMU bug by tracking emulated counter events
     using a dedicated field instead of snapshotting the "previous"
     counter. If the hardware PMC count triggers overflow that is
     recognized in the same VM-Exit that KVM manually bumps an event
     count, KVM would pend PMIs for both the hardware-triggered overflow
     and for KVM-triggered overflow.

   - Turn off KVM_WERROR by default for all configs so that it's not
     inadvertantly enabled by non-KVM developers, which can be
     problematic for subsystems that require no regressions for W=1
     builds.

   - Advertise all of the host-supported CPUID bits that enumerate
     IA32_SPEC_CTRL "features".

   - Don't force a masterclock update when a vCPU synchronizes to the
     current TSC generation, as updating the masterclock can cause
     kvmclock's time to "jump" unexpectedly, e.g. when userspace
     hotplugs a pre-created vCPU.

   - Use RIP-relative address to read kvm_rebooting in the VM-Enter
     fault paths, partly as a super minor optimization, but mostly to
     make KVM play nice with position independent executable builds.

   - Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
     CONFIG_HYPERV as a minor optimization, and to self-document the
     code.

   - Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV
     "emulation" at build time.

  ARM64:

   - LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB base
     granule sizes. Branch shared with the arm64 tree.

   - Large Fine-Grained Trap rework, bringing some sanity to the
     feature, although there is more to come. This comes with a prefix
     branch shared with the arm64 tree.

   - Some additional Nested Virtualization groundwork, mostly
     introducing the NV2 VNCR support and retargetting the NV support to
     that version of the architecture.

   - A small set of vgic fixes and associated cleanups.

  Loongarch:

   - Optimization for memslot hugepage checking

   - Cleanup and fix some HW/SW timer issues

   - Add LSX/LASX (128bit/256bit SIMD) support

  RISC-V:

   - KVM_GET_REG_LIST improvement for vector registers

   - Generate ISA extension reg_list using macros in get-reg-list
     selftest

   - Support for reporting steal time along with selftest

  s390:

   - Bugfixes

  Selftests:

   - Fix an annoying goof where the NX hugepage test prints out garbage
     instead of the magic token needed to run the test.

   - Fix build errors when a header is delete/moved due to a missing
     flag in the Makefile.

   - Detect if KVM bugged/killed a selftest's VM and print out a helpful
     message instead of complaining that a random ioctl() failed.

   - Annotate the guest printf/assert helpers with __printf(), and fix
     the various bugs that were lurking due to lack of said annotation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (185 commits)
  x86/kvm: Do not try to disable kvmclock if it was not enabled
  KVM: x86: add missing "depends on KVM"
  KVM: fix direction of dependency on MMU notifiers
  KVM: introduce CONFIG_KVM_COMMON
  KVM: arm64: Add missing memory barriers when switching to pKVM's hyp pgd
  KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
  RISC-V: KVM: selftests: Add get-reg-list test for STA registers
  RISC-V: KVM: selftests: Add steal_time test support
  RISC-V: KVM: selftests: Add guest_sbi_probe_extension
  RISC-V: KVM: selftests: Move sbi_ecall to processor.c
  RISC-V: KVM: Implement SBI STA extension
  RISC-V: KVM: Add support for SBI STA registers
  RISC-V: KVM: Add support for SBI extension registers
  RISC-V: KVM: Add SBI STA info to vcpu_arch
  RISC-V: KVM: Add steal-update vcpu request
  RISC-V: KVM: Add SBI STA extension skeleton
  RISC-V: paravirt: Implement steal-time support
  RISC-V: Add SBI STA extension definitions
  RISC-V: paravirt: Add skeleton for pv-time support
  RISC-V: KVM: Fix indentation in kvm_riscv_vcpu_set_reg_csr()
  ...
2024-01-17 13:03:37 -08:00
Linus Torvalds
499aa1ca4e dcache stuff for this cycle
change of locking rules for __dentry_kill(), regularized refcounting
 rules in that area, assorted cleanups and removal of weird corner
 cases (e.g. now ->d_iput() on child is always called before the parent
 might hit __dentry_kill(), etc.)
 
 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull dcache updates from Al Viro:
 "Change of locking rules for __dentry_kill(), regularized refcounting
  rules in that area, assorted cleanups and removal of weird corner
  cases (e.g. now ->d_iput() on child is always called before the parent
  might hit __dentry_kill(), etc)"

* tag 'pull-dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (40 commits)
  dcache: remove unnecessary NULL check in dget_dlock()
  kill DCACHE_MAY_FREE
  __d_unalias() doesn't use inode argument
  d_alloc_parallel(): in-lookup hash insertion doesn't need an RCU variant
  get rid of DCACHE_GENOCIDE
  d_genocide(): move the extern into fs/internal.h
  simple_fill_super(): don't bother with d_genocide() on failure
  nsfs: use d_make_root()
  d_alloc_pseudo(): move setting ->d_op there from the (sole) caller
  kill d_instantate_anon(), fold __d_instantiate_anon() into remaining caller
  retain_dentry(): introduce a trimmed-down lockless variant
  __dentry_kill(): new locking scheme
  d_prune_aliases(): use a shrink list
  switch select_collect{,2}() to use of to_shrink_list()
  to_shrink_list(): call only if refcount is 0
  fold dentry_kill() into dput()
  don't try to cut corners in shrink_lock_dentry()
  fold the call of retain_dentry() into fast_dput()
  Call retain_dentry() with refcount 0
  dentry_kill(): don't bother with retain_dentry() on slow path
  ...
2024-01-11 20:11:35 -08:00
Linus Torvalds
3e7aeb78ab Networking changes for 6.8.
Core & protocols
 ----------------
 
  - Analyze and reorganize core networking structs (socks, netdev,
    netns, mibs) to optimize cacheline consumption and set up
    build time warnings to safeguard against future header changes.
    This improves TCP performances with many concurrent connections
    up to 40%.
 
  - Add page-pool netlink-based introspection, exposing the
    memory usage and recycling stats. This helps indentify
    bad PP users and possible leaks.
 
  - Refine TCP/DCCP source port selection to no longer favor even
    source port at connect() time when IP_LOCAL_PORT_RANGE is set.
    This lowers the time taken by connect() for hosts having
    many active connections to the same destination.
 
  - Refactor the TCP bind conflict code, shrinking related socket
    structs.
 
  - Refactor TCP SYN-Cookie handling, as a preparation step to
    allow arbitrary SYN-Cookie processing via eBPF.
 
  - Tune optmem_max for 0-copy usage, increasing the default value
    to 128KB and namespecifying it.
 
  - Allow coalescing for cloned skbs coming from page pools, improving
    RX performances with some common configurations.
 
  - Reduce extension header parsing overhead at GRO time.
 
  - Add bridge MDB bulk deletion support, allowing user-space to
    request the deletion of matching entries.
 
  - Reorder nftables struct members, to keep data accessed by the
    datapath first.
 
  - Introduce TC block ports tracking and use. This allows supporting
    multicast-like behavior at the TC layer.
 
  - Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
    classifiers (RSVP and tcindex).
 
  - More data-race annotations.
 
  - Extend the diag interface to dump TCP bound-only sockets.
 
  - Conditional notification of events for TC qdisc class and actions.
 
  - Support for WPAN dynamic associations with nearby devices, to form
    a sub-network using a specific PAN ID.
 
  - Implement SMCv2.1 virtual ISM device support.
 
  - Add support for Batman-avd mulicast packet type.
 
 BPF
 ---
 
  - Tons of verifier improvements:
    - BPF register bounds logic and range support along with a large
      test suite
    - log improvements
    - complete precision tracking support for register spills
    - track aligned STACK_ZERO cases as imprecise spilled registers. It
      improves the verifier "instructions processed" metric from single
      digit to 50-60% for some programs
    - support for user's global BPF subprogram arguments with few
      commonly requested annotations for a better developer experience
    - support tracking of BPF_JNE which helps cases when the compiler
      transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
      like
    - several fixes
 
  - Add initial TX metadata implementation for AF_XDP with support in
    mlx5 and stmmac drivers. Two types of offloads are supported right
    now, that is, TX timestamp and TX checksum offload.
 
  - Fix kCFI bugs in BPF all forms of indirect calls from BPF into
    kernel and from kernel into BPF work with CFI enabled. This allows
    BPF to work with CONFIG_FINEIBT=y.
 
  - Change BPF verifier logic to validate global subprograms lazily
    instead of unconditionally before the main program, so they can be
    guarded using BPF CO-RE techniques.
 
  - Support uid/gid options when mounting bpffs.
 
  - Add a new kfunc which acquires the associated cgroup of a task
    within a specific cgroup v1 hierarchy where the latter is identified
    by its id.
 
  - Extend verifier to allow bpf_refcount_acquire() of a map value field
    obtained via direct load which is a use-case needed in sched_ext.
 
  - Add BPF link_info support for uprobe multi link along with bpftool
    integration for the latter.
 
  - Support for VLAN tag in XDP hints.
 
  - Remove deprecated bpfilter kernel leftovers given the project
    is developed in user-space (https://github.com/facebook/bpfilter).
 
 Misc
 ----
 
  - Support for parellel TC self-tests execution.
 
  - Increase MPTCP self-tests coverage.
 
  - Updated the bridge documentation, including several so-far
    undocumented features.
 
  - Convert all the net self-tests to run in unique netns, to
    avoid random failures due to conflict and allow concurrent
    runs.
 
  - Add TCP-AO self-tests.
 
  - Add kunit tests for both cfg80211 and mac80211.
 
  - Autogenerate Netlink families documentation from YAML spec.
 
  - Add yml-gen support for fixed headers and recursive nests, the
    tool can now generate user-space code for all genetlink families
    for which we have specs.
 
  - A bunch of additional module descriptions fixes.
 
  - Catch incorrect freeing of pages belonging to a page pool.
 
 Driver API
 ----------
 
  - Rust abstractions for network PHY drivers; do not cover yet the
    full C API, but already allow implementing functional PHY drivers
    in rust.
 
  - Introduce queue and NAPI support in the netdev Netlink interface,
    allowing complete access to the device <> NAPIs <> queues
    relationship.
 
  - Introduce notifications filtering for devlink to allow control
    application scale to thousands of instances.
 
  - Improve PHY validation, requesting rate matching information for
    each ethtool link mode supported by both the PHY and host.
 
  - Add support for ethtool symmetric-xor RSS hash.
 
  - ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
    platform.
 
  - Expose pin fractional frequency offset value over new DPLL generic
    netlink attribute.
 
  - Convert older drivers to platform remove callback returning void.
 
  - Add support for PHY package MMD read/write.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet:
    - Octeon CN10K devices
    - Broadcom 5760X P7
    - Qualcomm SM8550 SoC
    - Texas Instrument DP83TG720S PHY
 
  - Bluetooth:
    - IMC Networks Bluetooth radio
 
 Removed
 -------
 
  - WiFi:
    - libertas 16-bit PCMCIA support
    - Atmel at76c50x drivers
    - HostAP ISA/PCMCIA style 802.11b driver
    - zd1201 802.11b USB dongles
    - Orinoco ISA/PCMCIA 802.11b driver
    - Aviator/Raytheon driver
    - Planet WL3501 driver
    - RNDIS USB 802.11b driver
 
 Drivers
 -------
 
  - Ethernet high-speed NICs:
    - Intel (100G, ice, idpf):
      - allow one by one port representors creation and removal
      - add temperature and clock information reporting
      - add get/set for ethtool's header split ringparam
      - add again FW logging
      - adds support switchdev hardware packet mirroring
      - iavf: implement symmetric-xor RSS hash
      - igc: add support for concurrent physical and free-running timers
      - i40e: increase the allowable descriptors
    - nVidia/Mellanox:
      - Preparation for Socket-Direct multi-dev netdev. That will allow
        in future releases combining multiple PFs devices attached to
        different NUMA nodes under the same netdev
    - Broadcom (bnxt):
      - TX completion handling improvements
      - add basic ntuple filter support
      - reduce MSIX vectors usage for MQPRIO offload
      - add VXLAN support, USO offload and TX coalesce completion for P7
    - Marvell Octeon EP:
      - xmit-more support
      - add PF-VF mailbox support and use it for FW notifications for VFs
    - Wangxun (ngbe/txgbe):
      - implement ethtool functions to operate pause param, ring param,
        coalesce channel number and msglevel
    - Netronome/Corigine (nfp):
      - add flow-steering support
      - support UDP segmentation offload
 
  - Ethernet NICs embedded, slower, virtual:
    - Xilinx AXI: remove duplicate DMA code adopting the dma engine driver
    - stmmac: add support for HW-accelerated VLAN stripping
    - TI AM654x sw: add mqprio, frame preemption & coalescing
    - gve: add support for non-4k page sizes.
    - virtio-net: support dynamic coalescing moderation
 
  - nVidia/Mellanox Ethernet datacenter switches:
    - allow firmware upgrade without a reboot
    - more flexible support for bridge flooding via the compressed
      FID flooding mode
 
  - Ethernet embedded switches:
    - Microchip:
      - fine-tune flow control and speed configurations in KSZ8xxx
      - KSZ88X3: enable setting rmii reference
    - Renesas:
      - add jumbo frames support
    - Marvell:
      - 88E6xxx: add "eth-mac" and "rmon" stats support
 
  - Ethernet PHYs:
    - aquantia: add firmware load support
    - at803x: refactor the driver to simplify adding support for more
      chip variants
    - NXP C45 TJA11xx: Add MACsec offload support
 
  - Wifi:
    - MediaTek (mt76):
      - NVMEM EEPROM improvements
      - mt7996 Extremely High Throughput (EHT) improvements
      - mt7996 Wireless Ethernet Dispatcher (WED) support
      - mt7996 36-bit DMA support
    - Qualcomm (ath12k):
      - support for a single MSI vector
      - WCN7850: support AP mode
    - Intel (iwlwifi):
      - new debugfs file fw_dbg_clear
      - allow concurrent P2P operation on DFS channels
 
  - Bluetooth:
    - QCA2066: support HFP offload
    - ISO: more broadcast-related improvements
    - NXP: better recovery in case receiver/transmitter get out of sync
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Paolo Abeni:
 "The most interesting thing is probably the networking structs
  reorganization and a significant amount of changes is around
  self-tests.

  Core & protocols:

   - Analyze and reorganize core networking structs (socks, netdev,
     netns, mibs) to optimize cacheline consumption and set up build
     time warnings to safeguard against future header changes

     This improves TCP performances with many concurrent connections up
     to 40%

   - Add page-pool netlink-based introspection, exposing the memory
     usage and recycling stats. This helps indentify bad PP users and
     possible leaks

   - Refine TCP/DCCP source port selection to no longer favor even
     source port at connect() time when IP_LOCAL_PORT_RANGE is set. This
     lowers the time taken by connect() for hosts having many active
     connections to the same destination

   - Refactor the TCP bind conflict code, shrinking related socket
     structs

   - Refactor TCP SYN-Cookie handling, as a preparation step to allow
     arbitrary SYN-Cookie processing via eBPF

   - Tune optmem_max for 0-copy usage, increasing the default value to
     128KB and namespecifying it

   - Allow coalescing for cloned skbs coming from page pools, improving
     RX performances with some common configurations

   - Reduce extension header parsing overhead at GRO time

   - Add bridge MDB bulk deletion support, allowing user-space to
     request the deletion of matching entries

   - Reorder nftables struct members, to keep data accessed by the
     datapath first

   - Introduce TC block ports tracking and use. This allows supporting
     multicast-like behavior at the TC layer

   - Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
     classifiers (RSVP and tcindex)

   - More data-race annotations

   - Extend the diag interface to dump TCP bound-only sockets

   - Conditional notification of events for TC qdisc class and actions

   - Support for WPAN dynamic associations with nearby devices, to form
     a sub-network using a specific PAN ID

   - Implement SMCv2.1 virtual ISM device support

   - Add support for Batman-avd mulicast packet type

  BPF:

   - Tons of verifier improvements:
       - BPF register bounds logic and range support along with a large
         test suite
       - log improvements
       - complete precision tracking support for register spills
       - track aligned STACK_ZERO cases as imprecise spilled registers.
         This improves the verifier "instructions processed" metric from
         single digit to 50-60% for some programs
       - support for user's global BPF subprogram arguments with few
         commonly requested annotations for a better developer
         experience
       - support tracking of BPF_JNE which helps cases when the compiler
         transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
         like
       - several fixes

   - Add initial TX metadata implementation for AF_XDP with support in
     mlx5 and stmmac drivers. Two types of offloads are supported right
     now, that is, TX timestamp and TX checksum offload

   - Fix kCFI bugs in BPF all forms of indirect calls from BPF into
     kernel and from kernel into BPF work with CFI enabled. This allows
     BPF to work with CONFIG_FINEIBT=y

   - Change BPF verifier logic to validate global subprograms lazily
     instead of unconditionally before the main program, so they can be
     guarded using BPF CO-RE techniques

   - Support uid/gid options when mounting bpffs

   - Add a new kfunc which acquires the associated cgroup of a task
     within a specific cgroup v1 hierarchy where the latter is
     identified by its id

   - Extend verifier to allow bpf_refcount_acquire() of a map value
     field obtained via direct load which is a use-case needed in
     sched_ext

   - Add BPF link_info support for uprobe multi link along with bpftool
     integration for the latter

   - Support for VLAN tag in XDP hints

   - Remove deprecated bpfilter kernel leftovers given the project is
     developed in user-space (https://github.com/facebook/bpfilter)

  Misc:

   - Support for parellel TC self-tests execution

   - Increase MPTCP self-tests coverage

   - Updated the bridge documentation, including several so-far
     undocumented features

   - Convert all the net self-tests to run in unique netns, to avoid
     random failures due to conflict and allow concurrent runs

   - Add TCP-AO self-tests

   - Add kunit tests for both cfg80211 and mac80211

   - Autogenerate Netlink families documentation from YAML spec

   - Add yml-gen support for fixed headers and recursive nests, the tool
     can now generate user-space code for all genetlink families for
     which we have specs

   - A bunch of additional module descriptions fixes

   - Catch incorrect freeing of pages belonging to a page pool

  Driver API:

   - Rust abstractions for network PHY drivers; do not cover yet the
     full C API, but already allow implementing functional PHY drivers
     in rust

   - Introduce queue and NAPI support in the netdev Netlink interface,
     allowing complete access to the device <> NAPIs <> queues
     relationship

   - Introduce notifications filtering for devlink to allow control
     application scale to thousands of instances

   - Improve PHY validation, requesting rate matching information for
     each ethtool link mode supported by both the PHY and host

   - Add support for ethtool symmetric-xor RSS hash

   - ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
     platform

   - Expose pin fractional frequency offset value over new DPLL generic
     netlink attribute

   - Convert older drivers to platform remove callback returning void

   - Add support for PHY package MMD read/write

  New hardware / drivers:

   - Ethernet:
       - Octeon CN10K devices
       - Broadcom 5760X P7
       - Qualcomm SM8550 SoC
       - Texas Instrument DP83TG720S PHY

   - Bluetooth:
       - IMC Networks Bluetooth radio

  Removed:

   - WiFi:
       - libertas 16-bit PCMCIA support
       - Atmel at76c50x drivers
       - HostAP ISA/PCMCIA style 802.11b driver
       - zd1201 802.11b USB dongles
       - Orinoco ISA/PCMCIA 802.11b driver
       - Aviator/Raytheon driver
       - Planet WL3501 driver
       - RNDIS USB 802.11b driver

  Driver updates:

   - Ethernet high-speed NICs:
       - Intel (100G, ice, idpf):
          - allow one by one port representors creation and removal
          - add temperature and clock information reporting
          - add get/set for ethtool's header split ringparam
          - add again FW logging
          - adds support switchdev hardware packet mirroring
          - iavf: implement symmetric-xor RSS hash
          - igc: add support for concurrent physical and free-running
            timers
          - i40e: increase the allowable descriptors
       - nVidia/Mellanox:
          - Preparation for Socket-Direct multi-dev netdev. That will
            allow in future releases combining multiple PFs devices
            attached to different NUMA nodes under the same netdev
       - Broadcom (bnxt):
          - TX completion handling improvements
          - add basic ntuple filter support
          - reduce MSIX vectors usage for MQPRIO offload
          - add VXLAN support, USO offload and TX coalesce completion
            for P7
       - Marvell Octeon EP:
          - xmit-more support
          - add PF-VF mailbox support and use it for FW notifications
            for VFs
       - Wangxun (ngbe/txgbe):
          - implement ethtool functions to operate pause param, ring
            param, coalesce channel number and msglevel
       - Netronome/Corigine (nfp):
          - add flow-steering support
          - support UDP segmentation offload

   - Ethernet NICs embedded, slower, virtual:
       - Xilinx AXI: remove duplicate DMA code adopting the dma engine
         driver
       - stmmac: add support for HW-accelerated VLAN stripping
       - TI AM654x sw: add mqprio, frame preemption & coalescing
       - gve: add support for non-4k page sizes.
       - virtio-net: support dynamic coalescing moderation

   - nVidia/Mellanox Ethernet datacenter switches:
       - allow firmware upgrade without a reboot
       - more flexible support for bridge flooding via the compressed
         FID flooding mode

   - Ethernet embedded switches:
       - Microchip:
          - fine-tune flow control and speed configurations in KSZ8xxx
          - KSZ88X3: enable setting rmii reference
       - Renesas:
          - add jumbo frames support
       - Marvell:
          - 88E6xxx: add "eth-mac" and "rmon" stats support

   - Ethernet PHYs:
       - aquantia: add firmware load support
       - at803x: refactor the driver to simplify adding support for more
         chip variants
       - NXP C45 TJA11xx: Add MACsec offload support

   - Wifi:
       - MediaTek (mt76):
          - NVMEM EEPROM improvements
          - mt7996 Extremely High Throughput (EHT) improvements
          - mt7996 Wireless Ethernet Dispatcher (WED) support
          - mt7996 36-bit DMA support
       - Qualcomm (ath12k):
          - support for a single MSI vector
          - WCN7850: support AP mode
       - Intel (iwlwifi):
          - new debugfs file fw_dbg_clear
          - allow concurrent P2P operation on DFS channels

   - Bluetooth:
       - QCA2066: support HFP offload
       - ISO: more broadcast-related improvements
       - NXP: better recovery in case receiver/transmitter get out of sync"

* tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1714 commits)
  lan78xx: remove redundant statement in lan78xx_get_eee
  lan743x: remove redundant statement in lan743x_ethtool_get_eee
  bnxt_en: Fix RCU locking for ntuple filters in bnxt_rx_flow_steer()
  bnxt_en: Fix RCU locking for ntuple filters in bnxt_srxclsrldel()
  bnxt_en: Remove unneeded variable in bnxt_hwrm_clear_vnic_filter()
  tcp: Revert no longer abort SYN_SENT when receiving some ICMP
  Revert "mlx5 updates 2023-12-20"
  Revert "net: stmmac: Enable Per DMA Channel interrupt"
  ipvlan: Remove usage of the deprecated ida_simple_xx() API
  ipvlan: Fix a typo in a comment
  net/sched: Remove ipt action tests
  net: stmmac: Use interrupt mode INTM=1 for per channel irq
  net: stmmac: Add support for TX/RX channel interrupt
  net: stmmac: Make MSI interrupt routine generic
  dt-bindings: net: snps,dwmac: per channel irq
  net: phy: at803x: make read_status more generic
  net: phy: at803x: add support for cdt cross short test for qca808x
  net: phy: at803x: refactor qca808x cable test get status function
  net: phy: at803x: generalize cdt fault length function
  net: ethernet: cortina: Drop TSO support
  ...
2024-01-11 10:07:29 -08:00
Linus Torvalds
c299010061 asm-generic cleanups for 6.8
A series from Baoquan He cleans up the asm-generic/io.h to remove the
 ioremap_uc() definition from everything except x86, which still needs it
 for pre-PAT systems. This series notably contains a patch from Jiaxun Yang
 that converts MIPS to use asm-generic/io.h like every other architecture
 does, enabling future cleanups.
 
 Some of my own patches fix -Wmissing-prototype warnings in architecture
 specific code across several architectures. This is now needed as the
 warning is enabled by default. There are still some remaining warnings
 in minor platforms, but the series should catch most of the widely used
 ones make them more consistent with one another.
 
 David McKay fixes a bug in __generic_cmpxchg_local() when this is used
 on 64-bit architectures. This could currently only affect parisc64
 and sparc64.
 
 Additional cleanups address from Linus Walleij, Uwe Kleine-König,
 Thomas Huth, and Kefeng Wang help reduce unnecessary inconsistencies
 between architectures.
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Merge tag 'asm-generic-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic cleanups from Arnd Bergmann:
 "A series from Baoquan He cleans up the asm-generic/io.h to remove the
  ioremap_uc() definition from everything except x86, which still needs
  it for pre-PAT systems. This series notably contains a patch from
  Jiaxun Yang that converts MIPS to use asm-generic/io.h like every
  other architecture does, enabling future cleanups.

  Some of my own patches fix -Wmissing-prototype warnings in
  architecture specific code across several architectures. This is now
  needed as the warning is enabled by default. There are still some
  remaining warnings in minor platforms, but the series should catch
  most of the widely used ones make them more consistent with one
  another.

  David McKay fixes a bug in __generic_cmpxchg_local() when this is used
  on 64-bit architectures. This could currently only affect parisc64 and
  sparc64.

  Additional cleanups address from Linus Walleij, Uwe Kleine-König,
  Thomas Huth, and Kefeng Wang help reduce unnecessary inconsistencies
  between architectures"

* tag 'asm-generic-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: Fix 32 bit __generic_cmpxchg_local
  Hexagon: Make pfn accessors statics inlines
  ARC: mm: Make virt_to_pfn() a static inline
  mips: remove extraneous asm-generic/iomap.h include
  sparc: Use $(kecho) to announce kernel images being ready
  arm64: vdso32: Define BUILD_VDSO32_64 to correct prototypes
  csky: fix arch_jump_label_transform_static override
  arch: add do_page_fault prototypes
  arch: add missing prepare_ftrace_return() prototypes
  arch: vdso: consolidate gettime prototypes
  arch: include linux/cpu.h for trap_init() prototype
  arch: fix asm-offsets.c building with -Wmissing-prototypes
  arch: consolidate arch_irq_work_raise prototypes
  hexagon: Remove CONFIG_HEXAGON_ARCH_VERSION from uapi header
  asm/io: remove unnecessary xlate_dev_mem_ptr() and unxlate_dev_mem_ptr()
  mips: io: remove duplicated codes
  arch/*/io.h: remove ioremap_uc in some architectures
  mips: add <asm-generic/io.h> including
2024-01-10 18:13:44 -08:00
Linus Torvalds
78273df7f6 header cleanups for 6.8
The goal is to get sched.h down to a type only header, so the main thing
 happening in this patchset is splitting out various _types.h headers and
 dependency fixups, as well as moving some things out of sched.h to
 better locations.
 
 This is prep work for the memory allocation profiling patchset which
 adds new sched.h interdepencencies.
 
 Testing - it's been in -next, and fixes from pretty much all
 architectures have percolated in - nothing major.
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Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs

Pull header cleanups from Kent Overstreet:
 "The goal is to get sched.h down to a type only header, so the main
  thing happening in this patchset is splitting out various _types.h
  headers and dependency fixups, as well as moving some things out of
  sched.h to better locations.

  This is prep work for the memory allocation profiling patchset which
  adds new sched.h interdepencencies"

* tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (51 commits)
  Kill sched.h dependency on rcupdate.h
  kill unnecessary thread_info.h include
  Kill unnecessary kernel.h include
  preempt.h: Kill dependency on list.h
  rseq: Split out rseq.h from sched.h
  LoongArch: signal.c: add header file to fix build error
  restart_block: Trim includes
  lockdep: move held_lock to lockdep_types.h
  sem: Split out sem_types.h
  uidgid: Split out uidgid_types.h
  seccomp: Split out seccomp_types.h
  refcount: Split out refcount_types.h
  uapi/linux/resource.h: fix include
  x86/signal: kill dependency on time.h
  syscall_user_dispatch.h: split out *_types.h
  mm_types_task.h: Trim dependencies
  Split out irqflags_types.h
  ipc: Kill bogus dependency on spinlock.h
  shm: Slim down dependencies
  workqueue: Split out workqueue_types.h
  ...
2024-01-10 16:43:55 -08:00
Linus Torvalds
999a36b52b bcachefs updates for 6.8:
- btree write buffer rewrite: instead of adding keys to the btree write
    buffer at transaction commit time, we know journal them with a
    different journal entry type and copy them from the journal to the
    write buffer just prior to journal write.
 
    This reduces the number of atomic operations on shared cachelines
    in the transaction commit path and is a signicant performance
    improvement on some workloads: multithreaded 4k random writes went
    from ~650k iops to ~850k iops.
 
  - Bring back optimistic spinning for six locks: the new implementation
    doesn't use osq locks; instead we add to the lock waitlist as normal,
    and then spin on the lock_acquired bit in the waitlist entry, _not_
    the lock itself.
 
  - BCH_IOCTL_DEV_USAGE_V2, which allows for new data types
  - BCH_IOCTL_OFFLINE_FSCK, which runs the kernel implementation of fsck
    but without mounting: useful for transparently using the kernel
    version of fsck from 'bcachefs fsck' when the kernel version is a
    better match for the on disk filesystem.
 
  - BCH_IOCTL_ONLINE_FSCK: online fsck. Not all passes are supported yet,
    but the passes that are supported are fully featured - errors may be
    corrected as normal.
 
    The new ioctls use the new 'thread_with_file' abstraction for kicking
    off a kthread that's tied to a file descriptor returned to userspace
    via the ioctl.
 
  - btree_paths within a btree_trans are now dynamically growable,
    instead of being limited to 64. This is important for the
    check_directory_structure phase of fsck, and also fixes some issues
    we were having with btree path overflow in the reflink btree.
 
  - Trigger refactoring; prep work for the upcoming disk space accounting
    rewrite
 
  - Numerous bugfixes :)
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Merge tag 'bcachefs-2024-01-10' of https://evilpiepirate.org/git/bcachefs

Pull bcachefs updates from Kent Overstreet:

 - btree write buffer rewrite: instead of adding keys to the btree write
   buffer at transaction commit time, we now journal them with a
   different journal entry type and copy them from the journal to the
   write buffer just prior to journal write.

   This reduces the number of atomic operations on shared cachelines in
   the transaction commit path and is a signicant performance
   improvement on some workloads: multithreaded 4k random writes went
   from ~650k iops to ~850k iops.

 - Bring back optimistic spinning for six locks: the new implementation
   doesn't use osq locks; instead we add to the lock waitlist as normal,
   and then spin on the lock_acquired bit in the waitlist entry, _not_
   the lock itself.

 - New ioctls:

    - BCH_IOCTL_DEV_USAGE_V2, which allows for new data types

    - BCH_IOCTL_OFFLINE_FSCK, which runs the kernel implementation of
      fsck but without mounting: useful for transparently using the
      kernel version of fsck from 'bcachefs fsck' when the kernel
      version is a better match for the on disk filesystem.

    - BCH_IOCTL_ONLINE_FSCK: online fsck. Not all passes are supported
      yet, but the passes that are supported are fully featured - errors
      may be corrected as normal.

   The new ioctls use the new 'thread_with_file' abstraction for kicking
   off a kthread that's tied to a file descriptor returned to userspace
   via the ioctl.

 - btree_paths within a btree_trans are now dynamically growable,
   instead of being limited to 64. This is important for the
   check_directory_structure phase of fsck, and also fixes some issues
   we were having with btree path overflow in the reflink btree.

 - Trigger refactoring; prep work for the upcoming disk space accounting
   rewrite

 - Numerous bugfixes :)

* tag 'bcachefs-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (226 commits)
  bcachefs: eytzinger0_find() search should be const
  bcachefs: move "ptrs not changing" optimization to bch2_trigger_extent()
  bcachefs: fix simulateously upgrading & downgrading
  bcachefs: Restart recovery passes more reliably
  bcachefs: bch2_dump_bset() doesn't choke on u64s == 0
  bcachefs: improve checksum error messages
  bcachefs: improve validate_bset_keys()
  bcachefs: print sb magic when relevant
  bcachefs: __bch2_sb_field_to_text()
  bcachefs: %pg is banished
  bcachefs: Improve would_deadlock trace event
  bcachefs: fsck_err()s don't need to manually check c->sb.version anymore
  bcachefs: Upgrades now specify errors to fix, like downgrades
  bcachefs: no thread_with_file in userspace
  bcachefs: Don't autofix errors we can't fix
  bcachefs: add missing bch2_latency_acct() call
  bcachefs: increase max_active on io_complete_wq
  bcachefs: add time_stats for btree_node_read_done()
  bcachefs: don't clear accessed bit in btree node fill
  bcachefs: Add an option to control btree node prefetching
  ...
2024-01-10 16:34:17 -08:00
Linus Torvalds
0cb552aa97 This update includes the following changes:
API:
 
 - Add incremental lskcipher/skcipher processing.
 
 Algorithms:
 
 - Remove SHA1 from drbg.
 - Remove CFB and OFB.
 
 Drivers:
 
 - Add comp high perf mode configuration in hisilicon/zip.
 - Add support for 420xx devices in qat.
 - Add IAA Compression Accelerator driver.
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Merge tag 'v6.8-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Add incremental lskcipher/skcipher processing

  Algorithms:
   - Remove SHA1 from drbg
   - Remove CFB and OFB

  Drivers:
   - Add comp high perf mode configuration in hisilicon/zip
   - Add support for 420xx devices in qat
   - Add IAA Compression Accelerator driver"

* tag 'v6.8-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (172 commits)
  crypto: iaa - Account for cpu-less numa nodes
  crypto: scomp - fix req->dst buffer overflow
  crypto: sahara - add support for crypto_engine
  crypto: sahara - remove error message for bad aes request size
  crypto: sahara - remove unnecessary NULL assignments
  crypto: sahara - remove 'active' flag from sahara_aes_reqctx struct
  crypto: sahara - use dev_err_probe()
  crypto: sahara - use devm_clk_get_enabled()
  crypto: sahara - use BIT() macro
  crypto: sahara - clean up macro indentation
  crypto: sahara - do not resize req->src when doing hash operations
  crypto: sahara - fix processing hash requests with req->nbytes < sg->length
  crypto: sahara - improve error handling in sahara_sha_process()
  crypto: sahara - fix wait_for_completion_timeout() error handling
  crypto: sahara - fix ahash reqsize
  crypto: sahara - handle zero-length aes requests
  crypto: skcipher - remove excess kerneldoc members
  crypto: shash - remove excess kerneldoc members
  crypto: qat - generate dynamically arbiter mappings
  crypto: qat - add support for ring pair level telemetry
  ...
2024-01-10 12:23:43 -08:00
Linus Torvalds
063a7ce32d lsm/stable-6.8 PR 20240105
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Merge tag 'lsm-pr-20240105' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

Pull security module updates from Paul Moore:

 - Add three new syscalls: lsm_list_modules(), lsm_get_self_attr(), and
   lsm_set_self_attr().

   The first syscall simply lists the LSMs enabled, while the second and
   third get and set the current process' LSM attributes. Yes, these
   syscalls may provide similar functionality to what can be found under
   /proc or /sys, but they were designed to support multiple,
   simultaneaous (stacked) LSMs from the start as opposed to the current
   /proc based solutions which were created at a time when only one LSM
   was allowed to be active at a given time.

   We have spent considerable time discussing ways to extend the
   existing /proc interfaces to support multiple, simultaneaous LSMs and
   even our best ideas have been far too ugly to support as a kernel
   API; after +20 years in the kernel, I felt the LSM layer had
   established itself enough to justify a handful of syscalls.

   Support amongst the individual LSM developers has been nearly
   unanimous, with a single objection coming from Tetsuo (TOMOYO) as he
   is worried that the LSM_ID_XXX token concept will make it more
   difficult for out-of-tree LSMs to survive. Several members of the LSM
   community have demonstrated the ability for out-of-tree LSMs to
   continue to exist by picking high/unused LSM_ID values as well as
   pointing out that many kernel APIs rely on integer identifiers, e.g.
   syscalls (!), but unfortunately Tetsuo's objections remain.

   My personal opinion is that while I have no interest in penalizing
   out-of-tree LSMs, I'm not going to penalize in-tree development to
   support out-of-tree development, and I view this as a necessary step
   forward to support the push for expanded LSM stacking and reduce our
   reliance on /proc and /sys which has occassionally been problematic
   for some container users. Finally, we have included the linux-api
   folks on (all?) recent revisions of the patchset and addressed all of
   their concerns.

 - Add a new security_file_ioctl_compat() LSM hook to handle the 32-bit
   ioctls on 64-bit systems problem.

   This patch includes support for all of the existing LSMs which
   provide ioctl hooks, although it turns out only SELinux actually
   cares about the individual ioctls. It is worth noting that while
   Casey (Smack) and Tetsuo (TOMOYO) did not give explicit ACKs to this
   patch, they did both indicate they are okay with the changes.

 - Fix a potential memory leak in the CALIPSO code when IPv6 is disabled
   at boot.

   While it's good that we are fixing this, I doubt this is something
   users are seeing in the wild as you need to both disable IPv6 and
   then attempt to configure IPv6 labeled networking via
   NetLabel/CALIPSO; that just doesn't make much sense.

   Normally this would go through netdev, but Jakub asked me to take
   this patch and of all the trees I maintain, the LSM tree seemed like
   the best fit.

 - Update the LSM MAINTAINERS entry with additional information about
   our process docs, patchwork, bug reporting, etc.

   I also noticed that the Lockdown LSM is missing a dedicated
   MAINTAINERS entry so I've added that to the pull request. I've been
   working with one of the major Lockdown authors/contributors to see if
   they are willing to step up and assume a Lockdown maintainer role;
   hopefully that will happen soon, but in the meantime I'll continue to
   look after it.

 - Add a handful of mailmap entries for Serge Hallyn and myself.

* tag 'lsm-pr-20240105' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: (27 commits)
  lsm: new security_file_ioctl_compat() hook
  lsm: Add a __counted_by() annotation to lsm_ctx.ctx
  calipso: fix memory leak in netlbl_calipso_add_pass()
  selftests: remove the LSM_ID_IMA check in lsm/lsm_list_modules_test
  MAINTAINERS: add an entry for the lockdown LSM
  MAINTAINERS: update the LSM entry
  mailmap: add entries for Serge Hallyn's dead accounts
  mailmap: update/replace my old email addresses
  lsm: mark the lsm_id variables are marked as static
  lsm: convert security_setselfattr() to use memdup_user()
  lsm: align based on pointer length in lsm_fill_user_ctx()
  lsm: consolidate buffer size handling into lsm_fill_user_ctx()
  lsm: correct error codes in security_getselfattr()
  lsm: cleanup the size counters in security_getselfattr()
  lsm: don't yet account for IMA in LSM_CONFIG_COUNT calculation
  lsm: drop LSM_ID_IMA
  LSM: selftests for Linux Security Module syscalls
  SELinux: Add selfattr hooks
  AppArmor: Add selfattr hooks
  Smack: implement setselfattr and getselfattr hooks
  ...
2024-01-09 12:57:46 -08:00
Linus Torvalds
9f2a635235 Quite a lot of kexec work this time around. Many singleton patches in
many places.  The notable patch series are:
 
 - nilfs2 folio conversion from Matthew Wilcox in "nilfs2: Folio
   conversions for file paths".
 
 - Additional nilfs2 folio conversion from Ryusuke Konishi in "nilfs2:
   Folio conversions for directory paths".
 
 - IA64 remnant removal in Heiko Carstens's "Remove unused code after
   IA-64 removal".
 
 - Arnd Bergmann has enabled the -Wmissing-prototypes warning everywhere
   in "Treewide: enable -Wmissing-prototypes".  This had some followup
   fixes:
 
   - Nathan Chancellor has cleaned up the hexagon build in the series
     "hexagon: Fix up instances of -Wmissing-prototypes".
 
   - Nathan also addressed some s390 warnings in "s390: A couple of
     fixes for -Wmissing-prototypes".
 
   - Arnd Bergmann addresses the same warnings for MIPS in his series
     "mips: address -Wmissing-prototypes warnings".
 
 - Baoquan He has made kexec_file operate in a top-down-fitting manner
   similar to kexec_load in the series "kexec_file: Load kernel at top of
   system RAM if required"
 
 - Baoquan He has also added the self-explanatory "kexec_file: print out
   debugging message if required".
 
 - Some checkstack maintenance work from Tiezhu Yang in the series
   "Modify some code about checkstack".
 
 - Douglas Anderson has disentangled the watchdog code's logging when
   multiple reports are occurring simultaneously.  The series is "watchdog:
   Better handling of concurrent lockups".
 
 - Yuntao Wang has contributed some maintenance work on the crash code in
   "crash: Some cleanups and fixes".
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Merge tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "Quite a lot of kexec work this time around. Many singleton patches in
  many places. The notable patch series are:

   - nilfs2 folio conversion from Matthew Wilcox in 'nilfs2: Folio
     conversions for file paths'.

   - Additional nilfs2 folio conversion from Ryusuke Konishi in 'nilfs2:
     Folio conversions for directory paths'.

   - IA64 remnant removal in Heiko Carstens's 'Remove unused code after
     IA-64 removal'.

   - Arnd Bergmann has enabled the -Wmissing-prototypes warning
     everywhere in 'Treewide: enable -Wmissing-prototypes'. This had
     some followup fixes:

      - Nathan Chancellor has cleaned up the hexagon build in the series
        'hexagon: Fix up instances of -Wmissing-prototypes'.

      - Nathan also addressed some s390 warnings in 's390: A couple of
        fixes for -Wmissing-prototypes'.

      - Arnd Bergmann addresses the same warnings for MIPS in his series
        'mips: address -Wmissing-prototypes warnings'.

   - Baoquan He has made kexec_file operate in a top-down-fitting manner
     similar to kexec_load in the series 'kexec_file: Load kernel at top
     of system RAM if required'

   - Baoquan He has also added the self-explanatory 'kexec_file: print
     out debugging message if required'.

   - Some checkstack maintenance work from Tiezhu Yang in the series
     'Modify some code about checkstack'.

   - Douglas Anderson has disentangled the watchdog code's logging when
     multiple reports are occurring simultaneously. The series is
     'watchdog: Better handling of concurrent lockups'.

   - Yuntao Wang has contributed some maintenance work on the crash code
     in 'crash: Some cleanups and fixes'"

* tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (157 commits)
  crash_core: fix and simplify the logic of crash_exclude_mem_range()
  x86/crash: use SZ_1M macro instead of hardcoded value
  x86/crash: remove the unused image parameter from prepare_elf_headers()
  kdump: remove redundant DEFAULT_CRASH_KERNEL_LOW_SIZE
  scripts/decode_stacktrace.sh: strip unexpected CR from lines
  watchdog: if panicking and we dumped everything, don't re-enable dumping
  watchdog/hardlockup: use printk_cpu_sync_get_irqsave() to serialize reporting
  watchdog/softlockup: use printk_cpu_sync_get_irqsave() to serialize reporting
  watchdog/hardlockup: adopt softlockup logic avoiding double-dumps
  kexec_core: fix the assignment to kimage->control_page
  x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init()
  lib/trace_readwrite.c:: replace asm-generic/io with linux/io
  nilfs2: cpfile: fix some kernel-doc warnings
  stacktrace: fix kernel-doc typo
  scripts/checkstack.pl: fix no space expression between sp and offset
  x86/kexec: fix incorrect argument passed to kexec_dprintk()
  x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs
  nilfs2: add missing set_freezable() for freezable kthread
  kernel: relay: remove relay_file_splice_read dead code, doesn't work
  docs: submit-checklist: remove all of "make namespacecheck"
  ...
2024-01-09 11:46:20 -08:00
Linus Torvalds
fb46e22a9e Many singleton patches against the MM code. The patch series which
are included in this merge do the following:
 
 - Peng Zhang has done some mapletree maintainance work in the
   series
 
 	"maple_tree: add mt_free_one() and mt_attr() helpers"
 	"Some cleanups of maple tree"
 
 - In the series "mm: use memmap_on_memory semantics for dax/kmem"
   Vishal Verma has altered the interworking between memory-hotplug
   and dax/kmem so that newly added 'device memory' can more easily
   have its memmap placed within that newly added memory.
 
 - Matthew Wilcox continues folio-related work (including a few
   fixes) in the patch series
 
 	"Add folio_zero_tail() and folio_fill_tail()"
 	"Make folio_start_writeback return void"
 	"Fix fault handler's handling of poisoned tail pages"
 	"Convert aops->error_remove_page to ->error_remove_folio"
 	"Finish two folio conversions"
 	"More swap folio conversions"
 
 - Kefeng Wang has also contributed folio-related work in the series
 
 	"mm: cleanup and use more folio in page fault"
 
 - Jim Cromie has improved the kmemleak reporting output in the
   series "tweak kmemleak report format".
 
 - In the series "stackdepot: allow evicting stack traces" Andrey
   Konovalov to permits clients (in this case KASAN) to cause
   eviction of no longer needed stack traces.
 
 - Charan Teja Kalla has fixed some accounting issues in the page
   allocator's atomic reserve calculations in the series "mm:
   page_alloc: fixes for high atomic reserve caluculations".
 
 - Dmitry Rokosov has added to the samples/ dorectory some sample
   code for a userspace memcg event listener application.  See the
   series "samples: introduce cgroup events listeners".
 
 - Some mapletree maintanance work from Liam Howlett in the series
   "maple_tree: iterator state changes".
 
 - Nhat Pham has improved zswap's approach to writeback in the
   series "workload-specific and memory pressure-driven zswap
   writeback".
 
 - DAMON/DAMOS feature and maintenance work from SeongJae Park in
   the series
 
 	"mm/damon: let users feed and tame/auto-tune DAMOS"
 	"selftests/damon: add Python-written DAMON functionality tests"
 	"mm/damon: misc updates for 6.8"
 
 - Yosry Ahmed has improved memcg's stats flushing in the series
   "mm: memcg: subtree stats flushing and thresholds".
 
 - In the series "Multi-size THP for anonymous memory" Ryan Roberts
   has added a runtime opt-in feature to transparent hugepages which
   improves performance by allocating larger chunks of memory during
   anonymous page faults.
 
 - Matthew Wilcox has also contributed some cleanup and maintenance
   work against eh buffer_head code int he series "More buffer_head
   cleanups".
 
 - Suren Baghdasaryan has done work on Andrea Arcangeli's series
   "userfaultfd move option".  UFFDIO_MOVE permits userspace heap
   compaction algorithms to move userspace's pages around rather than
   UFFDIO_COPY'a alloc/copy/free.
 
 - Stefan Roesch has developed a "KSM Advisor", in the series
   "mm/ksm: Add ksm advisor".  This is a governor which tunes KSM's
   scanning aggressiveness in response to userspace's current needs.
 
 - Chengming Zhou has optimized zswap's temporary working memory
   use in the series "mm/zswap: dstmem reuse optimizations and
   cleanups".
 
 - Matthew Wilcox has performed some maintenance work on the
   writeback code, both code and within filesystems.  The series is
   "Clean up the writeback paths".
 
 - Andrey Konovalov has optimized KASAN's handling of alloc and
   free stack traces for secondary-level allocators, in the series
   "kasan: save mempool stack traces".
 
 - Andrey also performed some KASAN maintenance work in the series
   "kasan: assorted clean-ups".
 
 - David Hildenbrand has gone to town on the rmap code.  Cleanups,
   more pte batching, folio conversions and more.  See the series
   "mm/rmap: interface overhaul".
 
 - Kinsey Ho has contributed some maintenance work on the MGLRU
   code in the series "mm/mglru: Kconfig cleanup".
 
 - Matthew Wilcox has contributed lruvec page accounting code
   cleanups in the series "Remove some lruvec page accounting
   functions".
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Merge tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
 "Many singleton patches against the MM code. The patch series which are
  included in this merge do the following:

   - Peng Zhang has done some mapletree maintainance work in the series

	'maple_tree: add mt_free_one() and mt_attr() helpers'
	'Some cleanups of maple tree'

   - In the series 'mm: use memmap_on_memory semantics for dax/kmem'
     Vishal Verma has altered the interworking between memory-hotplug
     and dax/kmem so that newly added 'device memory' can more easily
     have its memmap placed within that newly added memory.

   - Matthew Wilcox continues folio-related work (including a few fixes)
     in the patch series

	'Add folio_zero_tail() and folio_fill_tail()'
	'Make folio_start_writeback return void'
	'Fix fault handler's handling of poisoned tail pages'
	'Convert aops->error_remove_page to ->error_remove_folio'
	'Finish two folio conversions'
	'More swap folio conversions'

   - Kefeng Wang has also contributed folio-related work in the series

	'mm: cleanup and use more folio in page fault'

   - Jim Cromie has improved the kmemleak reporting output in the series
     'tweak kmemleak report format'.

   - In the series 'stackdepot: allow evicting stack traces' Andrey
     Konovalov to permits clients (in this case KASAN) to cause eviction
     of no longer needed stack traces.

   - Charan Teja Kalla has fixed some accounting issues in the page
     allocator's atomic reserve calculations in the series 'mm:
     page_alloc: fixes for high atomic reserve caluculations'.

   - Dmitry Rokosov has added to the samples/ dorectory some sample code
     for a userspace memcg event listener application. See the series
     'samples: introduce cgroup events listeners'.

   - Some mapletree maintanance work from Liam Howlett in the series
     'maple_tree: iterator state changes'.

   - Nhat Pham has improved zswap's approach to writeback in the series
     'workload-specific and memory pressure-driven zswap writeback'.

   - DAMON/DAMOS feature and maintenance work from SeongJae Park in the
     series

	'mm/damon: let users feed and tame/auto-tune DAMOS'
	'selftests/damon: add Python-written DAMON functionality tests'
	'mm/damon: misc updates for 6.8'

   - Yosry Ahmed has improved memcg's stats flushing in the series 'mm:
     memcg: subtree stats flushing and thresholds'.

   - In the series 'Multi-size THP for anonymous memory' Ryan Roberts
     has added a runtime opt-in feature to transparent hugepages which
     improves performance by allocating larger chunks of memory during
     anonymous page faults.

   - Matthew Wilcox has also contributed some cleanup and maintenance
     work against eh buffer_head code int he series 'More buffer_head
     cleanups'.

   - Suren Baghdasaryan has done work on Andrea Arcangeli's series
     'userfaultfd move option'. UFFDIO_MOVE permits userspace heap
     compaction algorithms to move userspace's pages around rather than
     UFFDIO_COPY'a alloc/copy/free.

   - Stefan Roesch has developed a 'KSM Advisor', in the series 'mm/ksm:
     Add ksm advisor'. This is a governor which tunes KSM's scanning
     aggressiveness in response to userspace's current needs.

   - Chengming Zhou has optimized zswap's temporary working memory use
     in the series 'mm/zswap: dstmem reuse optimizations and cleanups'.

   - Matthew Wilcox has performed some maintenance work on the writeback
     code, both code and within filesystems. The series is 'Clean up the
     writeback paths'.

   - Andrey Konovalov has optimized KASAN's handling of alloc and free
     stack traces for secondary-level allocators, in the series 'kasan:
     save mempool stack traces'.

   - Andrey also performed some KASAN maintenance work in the series
     'kasan: assorted clean-ups'.

   - David Hildenbrand has gone to town on the rmap code. Cleanups, more
     pte batching, folio conversions and more. See the series 'mm/rmap:
     interface overhaul'.

   - Kinsey Ho has contributed some maintenance work on the MGLRU code
     in the series 'mm/mglru: Kconfig cleanup'.

   - Matthew Wilcox has contributed lruvec page accounting code cleanups
     in the series 'Remove some lruvec page accounting functions'"

* tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (361 commits)
  mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
  mm, treewide: introduce NR_PAGE_ORDERS
  selftests/mm: add separate UFFDIO_MOVE test for PMD splitting
  selftests/mm: skip test if application doesn't has root privileges
  selftests/mm: conform test to TAP format output
  selftests: mm: hugepage-mmap: conform to TAP format output
  selftests/mm: gup_test: conform test to TAP format output
  mm/selftests: hugepage-mremap: conform test to TAP format output
  mm/vmstat: move pgdemote_* out of CONFIG_NUMA_BALANCING
  mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large
  mm/memcontrol: remove __mod_lruvec_page_state()
  mm/khugepaged: use a folio more in collapse_file()
  slub: use a folio in __kmalloc_large_node
  slub: use folio APIs in free_large_kmalloc()
  slub: use alloc_pages_node() in alloc_slab_page()
  mm: remove inc/dec lruvec page state functions
  mm: ratelimit stat flush from workingset shrinker
  kasan: stop leaking stack trace handles
  mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
  mm/mglru: add dummy pmd_dirty()
  ...
2024-01-09 11:18:47 -08:00
Linus Torvalds
aac4de465a Performance events changes for v6.8 are:
- Add branch stack counters ABI extension to better capture
    the growing amount of information the PMU exposes via
    branch stack sampling. There's matching tooling support.
 
  - Fix race when creating the nr_addr_filters sysfs file
 
  - Add Intel Sierra Forest and Grand Ridge intel/cstate
    PMU support.
 
  - Add Intel Granite Rapids, Sierra Forest and Grand Ridge
    uncore PMU support.
 
  - Misc cleanups & fixes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull performance events updates from Ingo Molnar:

 - Add branch stack counters ABI extension to better capture the growing
   amount of information the PMU exposes via branch stack sampling.
   There's matching tooling support.

 - Fix race when creating the nr_addr_filters sysfs file

 - Add Intel Sierra Forest and Grand Ridge intel/cstate PMU support

 - Add Intel Granite Rapids, Sierra Forest and Grand Ridge uncore PMU
   support

 - Misc cleanups & fixes

* tag 'perf-core-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/uncore: Factor out topology_gidnid_map()
  perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology()
  perf/x86/amd: Reject branch stack for IBS events
  perf/x86/intel/uncore: Support Sierra Forest and Grand Ridge
  perf/x86/intel/uncore: Support IIO free-running counters on GNR
  perf/x86/intel/uncore: Support Granite Rapids
  perf/x86/uncore: Use u64 to replace unsigned for the uncore offsets array
  perf/x86/intel/uncore: Generic uncore_get_uncores and MMIO format of SPR
  perf: Fix the nr_addr_filters fix
  perf/x86/intel/cstate: Add Grand Ridge support
  perf/x86/intel/cstate: Add Sierra Forest support
  x86/smp: Export symbol cpu_clustergroup_mask()
  perf/x86/intel/cstate: Cleanup duplicate attr_groups
  perf/core: Fix narrow startup race when creating the perf nr_addr_filters sysfs file
  perf/x86/intel: Support branch counters logging
  perf/x86/intel: Reorganize attrs and is_visible
  perf: Add branch_sample_call_stack
  perf/x86: Add PERF_X86_EVENT_NEEDS_BRANCH_STACK flag
  perf: Add branch stack counters
2024-01-08 19:37:20 -08:00
Linus Torvalds
968b803324 powerpc updates for 6.8
- Add initial support to recognise the HeXin C2000 processor.
 
  - Add papr-vpd and papr-sysparm character device drivers for VPD & sysparm
    retrieval, so userspace tools can be adapted to avoid doing raw firmware
    calls from userspace.
 
  - Sched domains optimisations for shared processor partitions on P9/P10.
 
  - A series of optimisations for KVM running as a nested HV under PowerVM.
 
  - Other small features and fixes.
 
 Thanks to: Aditya Gupta, Aneesh Kumar K.V, Arnd Bergmann, Christophe Leroy,
 Colin Ian King, Dario Binacchi, David Heidelberg, Geoff Levand, Gustavo A.
 R. Silva, Haoran Liu, Jordan Niethe, Kajol Jain, Kevin Hao, Kunwu Chan, Li
 kunyu, Li zeming, Masahiro Yamada, Michal Suchánek, Nathan Lynch, Naveen N Rao,
 Nicholas Piggin, Randy Dunlap, Sathvika Vasireddy, Srikar Dronamraju, Stephen
 Rothwell, Vaibhav Jain, Zhao Ke.
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Merge tag 'powerpc-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Add initial support to recognise the HeXin C2000 processor.

 - Add papr-vpd and papr-sysparm character device drivers for VPD &
   sysparm retrieval, so userspace tools can be adapted to avoid doing
   raw firmware calls from userspace.

 - Sched domains optimisations for shared processor partitions on
   P9/P10.

 - A series of optimisations for KVM running as a nested HV under
   PowerVM.

 - Other small features and fixes.

Thanks to Aditya Gupta, Aneesh Kumar K.V, Arnd Bergmann, Christophe
Leroy, Colin Ian King, Dario Binacchi, David Heidelberg, Geoff Levand,
Gustavo A. R. Silva, Haoran Liu, Jordan Niethe, Kajol Jain, Kevin Hao,
Kunwu Chan, Li kunyu, Li zeming, Masahiro Yamada, Michal Suchánek,
Nathan Lynch, Naveen N Rao, Nicholas Piggin, Randy Dunlap, Sathvika
Vasireddy, Srikar Dronamraju, Stephen Rothwell, Vaibhav Jain, and
Zhao Ke.

* tag 'powerpc-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (96 commits)
  powerpc/ps3_defconfig: Disable PPC64_BIG_ENDIAN_ELF_ABI_V2
  powerpc/86xx: Drop unused CONFIG_MPC8610
  powerpc/powernv: Add error handling to opal_prd_range_is_valid
  selftests/powerpc: Fix spelling mistake "EACCESS" -> "EACCES"
  powerpc/hvcall: Reorder Nestedv2 hcall opcodes
  powerpc/ps3: Add missing set_freezable() for ps3_probe_thread()
  powerpc/mpc83xx: Use wait_event_freezable() for freezable kthread
  powerpc/mpc83xx: Add the missing set_freezable() for agent_thread_fn()
  powerpc/fsl: Fix fsl,tmu-calibration to match the schema
  powerpc/smp: Dynamically build Powerpc topology
  powerpc/smp: Avoid asym packing within thread_group of a core
  powerpc/smp: Add __ro_after_init attribute
  powerpc/smp: Disable MC domain for shared processor
  powerpc/smp: Enable Asym packing for cores on shared processor
  powerpc/sched: Cleanup vcpu_is_preempted()
  powerpc: add cpu_spec.cpu_features to vmcoreinfo
  powerpc/imc-pmu: Add a null pointer check in update_events_in_group()
  powerpc/powernv: Add a null pointer check in opal_powercap_init()
  powerpc/powernv: Add a null pointer check in opal_event_init()
  powerpc/powernv: Add a null pointer check to scom_debug_init_one()
  ...
2024-01-08 16:22:47 -08:00
Kirill A. Shutemov
5e0a760b44 mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
commit 23baf831a3 ("mm, treewide: redefine MAX_ORDER sanely") has
changed the definition of MAX_ORDER to be inclusive.  This has caused
issues with code that was not yet upstream and depended on the previous
definition.

To draw attention to the altered meaning of the define, rename MAX_ORDER
to MAX_PAGE_ORDER.

Link: https://lkml.kernel.org/r/20231228144704.14033-2-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-01-08 15:27:15 -08:00
Linus Torvalds
8c9440fea7 vfs-6.8.mount
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Merge tag 'vfs-6.8.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs mount updates from Christian Brauner:
 "This contains the work to retrieve detailed information about mounts
  via two new system calls. This is hopefully the beginning of the end
  of the saga that started with fsinfo() years ago.

  The LWN articles in [1] and [2] can serve as a summary so we can avoid
  rehashing everything here.

  At LSFMM in May 2022 we got into a room and agreed on what we want to
  do about fsinfo(). Basically, split it into pieces. This is the first
  part of that agreement. Specifically, it is concerned with retrieving
  information about mounts. So this only concerns the mount information
  retrieval, not the mount table change notification, or the extended
  filesystem specific mount option work. That is separate work.

  Currently mounts have a 32bit id. Mount ids are already in heavy use
  by libmount and other low-level userspace but they can't be relied
  upon because they're recycled very quickly. We agreed that mounts
  should carry a unique 64bit id by which they can be referenced
  directly. This is now implemented as part of this work.

  The new 64bit mount id is exposed in statx() through the new
  STATX_MNT_ID_UNIQUE flag. If the flag isn't raised the old mount id is
  returned. If it is raised and the kernel supports the new 64bit mount
  id the flag is raised in the result mask and the new 64bit mount id is
  returned. New and old mount ids do not overlap so they cannot be
  conflated.

  Two new system calls are introduced that operate on the 64bit mount
  id: statmount() and listmount(). A summary of the api and usage can be
  found on LWN as well (cf. [3]) but of course, I'll provide a summary
  here as well.

  Both system calls rely on struct mnt_id_req. Which is the request
  struct used to pass the 64bit mount id identifying the mount to
  operate on. It is extensible to allow for the addition of new
  parameters and for future use in other apis that make use of mount
  ids.

  statmount() mimicks the semantics of statx() and exposes a set flags
  that userspace may raise in mnt_id_req to request specific information
  to be retrieved. A statmount() call returns a struct statmount filled
  in with information about the requested mount. Supported requests are
  indicated by raising the request flag passed in struct mnt_id_req in
  the @mask argument in struct statmount.

  Currently we do support:

   - STATMOUNT_SB_BASIC:
     Basic filesystem info

   - STATMOUNT_MNT_BASIC
     Mount information (mount id, parent mount id, mount attributes etc)

   - STATMOUNT_PROPAGATE_FROM
     Propagation from what mount in current namespace

   - STATMOUNT_MNT_ROOT
     Path of the root of the mount (e.g., mount --bind /bla /mnt returns /bla)

   - STATMOUNT_MNT_POINT
     Path of the mount point (e.g., mount --bind /bla /mnt returns /mnt)

   - STATMOUNT_FS_TYPE
     Name of the filesystem type as the magic number isn't enough due to submounts

  The string options STATMOUNT_MNT_{ROOT,POINT} and STATMOUNT_FS_TYPE
  are appended to the end of the struct. Userspace can use the offsets
  in @fs_type, @mnt_root, and @mnt_point to reference those strings
  easily.

  The struct statmount reserves quite a bit of space currently for
  future extensibility. This isn't really a problem and if this bothers
  us we can just send a follow-up pull request during this cycle.

  listmount() is given a 64bit mount id via mnt_id_req just as
  statmount(). It takes a buffer and a size to return an array of the
  64bit ids of the child mounts of the requested mount. Userspace can
  thus choose to either retrieve child mounts for a mount in batches or
  iterate through the child mounts. For most use-cases it will be
  sufficient to just leave space for a few child mounts. But for big
  mount tables having an iterator is really helpful. Iterating through a
  mount table works by setting @param in mnt_id_req to the mount id of
  the last child mount retrieved in the previous listmount() call"

Link: https://lwn.net/Articles/934469 [1]
Link: https://lwn.net/Articles/829212 [2]
Link: https://lwn.net/Articles/950569 [3]

* tag 'vfs-6.8.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  add selftest for statmount/listmount
  fs: keep struct mnt_id_req extensible
  wire up syscalls for statmount/listmount
  add listmount(2) syscall
  statmount: simplify string option retrieval
  statmount: simplify numeric option retrieval
  add statmount(2) syscall
  namespace: extract show_path() helper
  mounts: keep list of mounts in an rbtree
  add unique mount ID
2024-01-08 10:57:34 -08:00
Paolo Bonzini
fb872da8e7 Common KVM changes for 6.8:
- Use memdup_array_user() to harden against overflow.
 
  - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures.
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Merge tag 'kvm-x86-generic-6.8' of https://github.com/kvm-x86/linux into HEAD

Common KVM changes for 6.8:

 - Use memdup_array_user() to harden against overflow.

 - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures.
2024-01-08 08:09:57 -05:00
Paolo Bonzini
caadf876bb KVM: introduce CONFIG_KVM_COMMON
CONFIG_HAVE_KVM is currently used by some architectures to either
enabled the KVM config proper, or to enable host-side code that is
not part of the KVM module.  However, CONFIG_KVM's "select" statement
in virt/kvm/Kconfig corresponds to a third meaning, namely to
enable common Kconfigs required by all architectures that support
KVM.

These three meanings can be replaced respectively by an
architecture-specific Kconfig, by IS_ENABLED(CONFIG_KVM), or by
a new Kconfig symbol that is in turn selected by the
architecture-specific "config KVM".

Start by introducing such a new Kconfig symbol, CONFIG_KVM_COMMON.
Unlike CONFIG_HAVE_KVM, it is selected by CONFIG_KVM, not by
architecture code, and it brings in all dependencies of common
KVM code.  In particular, INTERVAL_TREE was missing in loongarch
and riscv, so that is another thing that is fixed.

Fixes: 8132d887a7 ("KVM: remove CONFIG_HAVE_KVM_EVENTFD", 2023-12-08)
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Closes: https://lore.kernel.org/all/44907c6b-c5bd-4e4a-a921-e4d3825539d8@infradead.org/
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-01-08 08:09:38 -05:00
Linus Torvalds
95c8a35f1c 12 hotfixes. 2 are cc:stable and the remainder either address post-6.7
issues or aren't considered necessary for earlier kernel versions.
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Merge tag 'mm-hotfixes-stable-2024-01-05-11-35' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc mm fixes from Andrew Morton:
 "12 hotfixes.

  Two are cc:stable and the remainder either address post-6.7 issues or
  aren't considered necessary for earlier kernel versions"

* tag 'mm-hotfixes-stable-2024-01-05-11-35' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: shrinker: use kvzalloc_node() from expand_one_shrinker_info()
  mailmap: add entries for Mathieu Othacehe
  MAINTAINERS: change vmware.com addresses to broadcom.com
  arch/mm/fault: fix major fault accounting when retrying under per-VMA lock
  mm/mglru: skip special VMAs in lru_gen_look_around()
  MAINTAINERS: hand over hwpoison maintainership to Miaohe Lin
  MAINTAINERS: remove hugetlb maintainer Mike Kravetz
  mm: fix unmap_mapping_range high bits shift bug
  mm: memcg: fix split queue list crash when large folio migration
  mm: fix arithmetic for max_prop_frac when setting max_ratio
  mm: fix arithmetic for bdi min_ratio
  mm: align larger anonymous mappings on THP boundaries
2024-01-05 13:46:18 -08:00
Jakub Kicinski
e63c1822ac Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

Conflicts:

drivers/net/ethernet/broadcom/bnxt/bnxt.c
  e009b2efb7 ("bnxt_en: Remove mis-applied code from bnxt_cfg_ntp_filters()")
  0f2b214779 ("bnxt_en: Fix compile error without CONFIG_RFS_ACCEL")
https://lore.kernel.org/all/20240105115509.225aa8a2@canb.auug.org.au/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-04 18:06:46 -08:00
Paolo Bonzini
136292522e LoongArch KVM changes for v6.8
1. Optimization for memslot hugepage checking.
 2. Cleanup and fix some HW/SW timer issues.
 3. Add LSX/LASX (128bit/256bit SIMD) support.
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Merge tag 'loongarch-kvm-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.8

1. Optimization for memslot hugepage checking.
2. Cleanup and fix some HW/SW timer issues.
3. Add LSX/LASX (128bit/256bit SIMD) support.
2024-01-02 13:16:29 -05:00
Jamal Hadi Salim
6d6d80e4f6 net/sched: Remove CONFIG_NET_ACT_IPT from default configs
Now that we are retiring the IPT action.

Reviewed-by: Victor Noguiera <victor@mojatatu.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-01-02 12:41:16 +00:00