There is only on Ethernet port and one Ethernet PHY on imx8qxp-mek.
Remove the unexisting ethphy1 port.
This fixes a run-time warning:
mdio_bus 5b040000.ethernet-1: MDIO device at address 1 is missing.
Fixes: fdea904e85 ("arm64: dts: imx: add imx8qxp mek support")
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The sram-node compatible properties have mistakingly combined the
model-specific string with the generic "mtd-ram" string.
Note that neither "cy7c1019dv33-10zsxi, mtd-ram" or
"cy7c1019dv33-10zsxi" are used by any in-kernel driver and they are
not present in any binding.
The physmap driver will however bind to platform devices that specify
"mtd-ram".
Fixes: fc48e76489 ("ARM: dts: imx6: Add support for Toradex Colibri iMX6 module")
Cc: Sanchayan Maity <maitysanchayan@gmail.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The difference between "fsl,etsec2-mdio" and "gianfar" has to do with
the .get_tbipa function, which calculates the address of the TBIPA
register automatically, if not explicitly specified. [ see
drivers/net/ethernet/freescale/fsl_pq_mdio.c ]. On LS1021A, the TBIPA
register is at offset 0x30 within the port register block, which is what
the "gianfar" method of calculating addresses actually does.
Luckily, the bad "compatible" is inconsequential for ls1021a.dtsi,
because the TBIPA register is explicitly specified via the second "reg"
(<0x0 0x2d10030 0x0 0x4>), so the "get_tbipa" function is dead code.
Nonetheless it's good to restore it to its correct value.
Background discussion:
https://www.spinics.net/lists/stable/msg361156.html
Fixes: c7861adbe3 ("ARM: dts: ls1021: Fix SGMII PCS link remaining down after PHY disconnect")
Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Per i.MX7D Document Number: IMX7DCEC Rev. 6, 03/2019,
there are only consumer/industrial parts, and 1.2GHz
is only support in consumer parts.
So exclude automotive from 792/996MHz/1.2GHz and exclude
industrial from 1.2GHz.
Fixes: d7bfba7296 ("ARM: dts: imx7d: Update cpufreq OPP table")
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This function is not only needed by the platform suspend code, but is also
reused as the CPU resume function when the ARM cores can be powered down
completely in deep idle, which is the case on i.MX6SX and i.MX6UL(L).
Providing the static inline stub whenever CONFIG_SUSPEND is disabled means
that those platforms will hang on resume from cpuidle if suspend is disabled.
So there are two problems:
- The static inline stub masks the linker error
- The function is not available where needed
Fix both by just building the function unconditionally, when
CONFIG_SOC_IMX6 is enabled. The actual code is three instructions long,
so it's arguably ok to just leave it in for all i.MX6 kernel configurations.
Fixes: 05136f0897 ("ARM: imx: support arm power off in cpuidle for i.mx6sx")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Currently the vmmc is supplied by the 1.8V pmic rail but this is wrong.
The default module behaviour is to power VCCQ and VCC by the 3.3V power
rail. Optional the user can connect the VCCQ to the pmic 1.8V emmc
power rail using a solder jumper.
Fixes: ddec5d1c00 ("ARM: dts: imx6: Add initial support for phyCORE-i.MX 6 SOM")
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
- fix randconfig to generate a sane .config
- rename hostprogs-y / always to hostprogs / always-y, which are
more natual syntax.
- optimize scripts/kallsyms
- fix yes2modconfig and mod2yesconfig
- make multiple directory targets ('make foo/ bar/') work
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Merge tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- fix randconfig to generate a sane .config
- rename hostprogs-y / always to hostprogs / always-y, which are more
natual syntax.
- optimize scripts/kallsyms
- fix yes2modconfig and mod2yesconfig
- make multiple directory targets ('make foo/ bar/') work
* tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: make multiple directory targets work
kconfig: Invalidate all symbols after changing to y or m.
kallsyms: fix type of kallsyms_token_table[]
scripts/kallsyms: change table to store (strcut sym_entry *)
scripts/kallsyms: rename local variables in read_symbol()
kbuild: rename hostprogs-y/always to hostprogs/always-y
kbuild: fix the document to use extra-y for vmlinux.lds
kconfig: fix broken dependency in randconfig-generated .config
Zonefs is a very simple file system exposing each zone of a zoned block
device as a file.
Unlike a regular file system with native zoned block device support
(e.g. f2fs or the on-going btrfs effort), zonefs does not hide the
sequential write constraint of zoned block devices to the user. As a
result, zonefs is not a POSIX compliant file system. Its goal is to
simplify the implementation of zoned block devices support in
applications by replacing raw block device file accesses with a richer
file based API, avoiding relying on direct block device file ioctls
which may be more obscure to developers.
One example of this approach is the implementation of LSM
(log-structured merge) tree structures (such as used in RocksDB and
LevelDB) on zoned block devices by allowing SSTables to be stored in a
zone file similarly to a regular file system rather than as a range of
sectors of a zoned device. The introduction of the higher level
construct "one file is one zone" can help reducing the amount of changes
needed in the application while at the same time allowing the use of
zoned block devices with various programming languages other than C.
Zonefs IO management implementation uses the new iomap generic code.
Zonefs has been successfully tested using a functional test suite
(available with zonefs userland format tool on github) and a prototype
implementation of LevelDB on top of zonefs.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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Merge tag 'zonefs-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs
Pull new zonefs file system from Damien Le Moal:
"Zonefs is a very simple file system exposing each zone of a zoned
block device as a file.
Unlike a regular file system with native zoned block device support
(e.g. f2fs or the on-going btrfs effort), zonefs does not hide the
sequential write constraint of zoned block devices to the user. As a
result, zonefs is not a POSIX compliant file system. Its goal is to
simplify the implementation of zoned block devices support in
applications by replacing raw block device file accesses with a richer
file based API, avoiding relying on direct block device file ioctls
which may be more obscure to developers.
One example of this approach is the implementation of LSM
(log-structured merge) tree structures (such as used in RocksDB and
LevelDB) on zoned block devices by allowing SSTables to be stored in a
zone file similarly to a regular file system rather than as a range of
sectors of a zoned device. The introduction of the higher level
construct "one file is one zone" can help reducing the amount of
changes needed in the application while at the same time allowing the
use of zoned block devices with various programming languages other
than C.
Zonefs IO management implementation uses the new iomap generic code.
Zonefs has been successfully tested using a functional test suite
(available with zonefs userland format tool on github) and a prototype
implementation of LevelDB on top of zonefs"
* tag 'zonefs-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonefs: Add documentation
fs: New zonefs file system
In order to allow the GICv4 code to link properly on 32bit ARM,
make sure we don't use 64bit divisions when it isn't strictly
necessary.
Fixes: 4e6437f12d ("irqchip/gic-v4.1: Ensure L2 vPE table is allocated at RD level")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag '5.6-rc-smb3-plugfest-patches' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"13 cifs/smb3 patches, most from testing at the SMB3 plugfest this week:
- Important fix for multichannel and for modefromsid mounts.
- Two reconnect fixes
- Addition of SMB3 change notify support
- Backup tools fix
- A few additional minor debug improvements (tracepoints and
additional logging found useful during testing this week)"
* tag '5.6-rc-smb3-plugfest-patches' of git://git.samba.org/sfrench/cifs-2.6:
smb3: Add defines for new information level, FileIdInformation
smb3: print warning once if posix context returned on open
smb3: add one more dynamic tracepoint missing from strict fsync path
cifs: fix mode bits from dir listing when mounted with modefromsid
cifs: fix channel signing
cifs: add SMB3 change notification support
cifs: make multichannel warning more visible
cifs: fix soft mounts hanging in the reconnect code
cifs: Add tracepoints for errors on flush or fsync
cifs: log warning message (once) if out of disk space
cifs: fail i/o on soft mounts if sessionsetup errors out
smb3: fix problem with null cifs super block with previous patch
SMB3: Backup intent flag missing from some more ops
Pull vboxfs from Al Viro:
"This is the VirtualBox guest shared folder support by Hans de Goede,
with fixups for fs_parse folded in to avoid bisection hazards from
those API changes..."
* 'work.vboxsf' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: Add VirtualBox guest shared folder (vboxsf) support
- Ensure that the PIT is set up when the local APIC is disable or
configured in legacy mode. This is caused by an ordering issue
introduced in the recent changes which skip PIT initialization when the
TSC and APIC frequencies are already known.
- Handle malformed SRAT tables during early ACPI parsing which caused an
infinite loop anda boot hang.
- Fix a long standing race in the affinity setting code which affects PCI
devices with non-maskable MSI interrupts. The problem is caused by the
non-atomic writes of the MSI address (destination APIC id) and data
(vector) fields which the device uses to construct the MSI message. The
non-atomic writes are mandated by PCI.
If both fields change and the device raises an interrupt after writing
address and before writing data, then the MSI block constructs a
inconsistent message which causes interrupts to be lost and subsequent
malfunction of the device.
The fix is to redirect the interrupt to the new vector on the current
CPU first and then switch it over to the new target CPU. This allows to
observe an eventually raised interrupt in the transitional stage (old
CPU, new vector) to be observed in the APIC IRR and retriggered on the
new target CPU and the new vector. The potential spurious interrupts
caused by this are harmless and can in the worst case expose a buggy
driver (all handlers have to be able to deal with spurious interrupts as
they can and do happen for various reasons).
- Add the missing suspend/resume mechanism for the HYPERV hypercall page
which prevents resume hibernation on HYPERV guests. This change got
lost before the merge window.
- Mask the IOAPIC before disabling the local APIC to prevent potentially
stale IOAPIC remote IRR bits which cause stale interrupt lines after
resume.
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Merge tag 'x86-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for X86:
- Ensure that the PIT is set up when the local APIC is disable or
configured in legacy mode. This is caused by an ordering issue
introduced in the recent changes which skip PIT initialization when
the TSC and APIC frequencies are already known.
- Handle malformed SRAT tables during early ACPI parsing which caused
an infinite loop anda boot hang.
- Fix a long standing race in the affinity setting code which affects
PCI devices with non-maskable MSI interrupts. The problem is caused
by the non-atomic writes of the MSI address (destination APIC id)
and data (vector) fields which the device uses to construct the MSI
message. The non-atomic writes are mandated by PCI.
If both fields change and the device raises an interrupt after
writing address and before writing data, then the MSI block
constructs a inconsistent message which causes interrupts to be
lost and subsequent malfunction of the device.
The fix is to redirect the interrupt to the new vector on the
current CPU first and then switch it over to the new target CPU.
This allows to observe an eventually raised interrupt in the
transitional stage (old CPU, new vector) to be observed in the APIC
IRR and retriggered on the new target CPU and the new vector.
The potential spurious interrupts caused by this are harmless and
can in the worst case expose a buggy driver (all handlers have to
be able to deal with spurious interrupts as they can and do happen
for various reasons).
- Add the missing suspend/resume mechanism for the HYPERV hypercall
page which prevents resume hibernation on HYPERV guests. This
change got lost before the merge window.
- Mask the IOAPIC before disabling the local APIC to prevent
potentially stale IOAPIC remote IRR bits which cause stale
interrupt lines after resume"
* tag 'x86-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Mask IOAPIC entries when disabling the local APIC
x86/hyperv: Suspend/resume the hypercall page for hibernation
x86/apic/msi: Plug non-maskable MSI affinity race
x86/boot: Handle malformed SRAT tables during early ACPI parsing
x86/timer: Don't skip PIT setup when APIC is disabled or in legacy mode
- Make the UP version of smp_call_function_single() match SMP semantics
when called for a not available CPU. Instead of emitting a warning and
assuming that the function call target is CPU0, return a proper error
code like the SMP version does.
- Remove a superfluous check in smp_call_function_many_cond()
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Merge tag 'smp-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP fixes from Thomas Gleixner:
"Two fixes for the SMP related functionality:
- Make the UP version of smp_call_function_single() match SMP
semantics when called for a not available CPU. Instead of emitting
a warning and assuming that the function call target is CPU0,
return a proper error code like the SMP version does.
- Remove a superfluous check in smp_call_function_many_cond()"
* tag 'smp-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp/up: Make smp_call_function_single() match SMP semantics
smp: Remove superfluous cond_func check in smp_call_function_many_cond()
- Kernel fixes:
- Install cgroup events to the correct CPU context to prevent a
potential list double add
- Prevent am intgeer underflow in the perf mlock acounting
- Add a missing prototyp for arch_perf_update_userpage()
- Tooling:
- Add a missing unlock in the error path of maps__insert() in perf maps.
- Fix the build with the latest libbfd
- Fix the perf parser so it does not delete parse event terms, which
caused a regression for using perf with the ARM CoreSight as the sink
confuguration was missing due to the deletion.
- Fix the double free in the perf CPU map merging test case
- Add the missing ustring support for the perf probe command
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Merge tag 'perf-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A set of fixes and improvements for the perf subsystem:
Kernel fixes:
- Install cgroup events to the correct CPU context to prevent a
potential list double add
- Prevent an integer underflow in the perf mlock accounting
- Add a missing prototype for arch_perf_update_userpage()
Tooling:
- Add a missing unlock in the error path of maps__insert() in perf
maps.
- Fix the build with the latest libbfd
- Fix the perf parser so it does not delete parse event terms, which
caused a regression for using perf with the ARM CoreSight as the
sink configuration was missing due to the deletion.
- Fix the double free in the perf CPU map merging test case
- Add the missing ustring support for the perf probe command"
* tag 'perf-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf maps: Add missing unlock to maps__insert() error case
perf probe: Add ustring support for perf probe command
perf: Make perf able to build with latest libbfd
perf test: Fix test case Merge cpu map
perf parse: Copy string to perf_evsel_config_term
perf parse: Refactor 'struct perf_evsel_config_term'
kernel/events: Add a missing prototype for arch_perf_update_userpage()
perf/cgroups: Install cgroup events to correct cpuctx
perf/core: Fix mlock accounting in perf_mmap()
- Handle a subtle race between the clocksource watchdog and a concurrent
clocksource watchdog stop/start sequence correctly to prevent a timer
double add bug.
- Fix the file path for the core time namespace file.
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Merge tag 'timers-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Two small fixes for the time(r) subsystem:
- Handle a subtle race between the clocksource watchdog and a
concurrent clocksource watchdog stop/start sequence correctly to
prevent a timer double add bug.
- Fix the file path for the core time namespace file"
* tag 'timers-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Prevent double add_timer_on() for watchdog_timer
MAINTAINERS: Correct path to time namespace source file
- Provision only ACPI enabled redistributors on GICv3
- Use the proper command colums when building the INVALL command for the
GICv3-ITS
- Ensure the allocation of the L2 vPE table for GICv4.1
- Correct the GICv4.1 VPROBASER programming so it uses the proper size
- A set of small GICv4.1 tidy up patches
- Configuration cleanup for C-SKY interrupt chip
- Clarify the function documentation for irq_set_wake() to document that
the wakeup functionality is orthogonal to the irq disable/enable
mechanism.
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Merge tag 'irq-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt fixes from Thomas Gleixner:
"A set of fixes for the interrupt subsystem:
- Provision only ACPI enabled redistributors on GICv3
- Use the proper command colums when building the INVALL command for
the GICv3-ITS
- Ensure the allocation of the L2 vPE table for GICv4.1
- Correct the GICv4.1 VPROBASER programming so it uses the proper
size
- A set of small GICv4.1 tidy up patches
- Configuration cleanup for C-SKY interrupt chip
- Clarify the function documentation for irq_set_wake() to document
that the wakeup functionality is orthogonal to the irq
disable/enable mechanism"
* tag 'irq-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Rename VPENDBASER/VPROPBASER accessors
irqchip/gic-v3-its: Remove superfluous WARN_ON
irqchip/gic-v4.1: Drop 'tmp' in inherit_vpe_l1_table_from_rd()
irqchip/gic-v4.1: Ensure L2 vPE table is allocated at RD level
irqchip/gic-v4.1: Set vpe_l1_base for all redistributors
irqchip/gic-v4.1: Fix programming of GICR_VPROPBASER_4_1_SIZE
genirq: Clarify that irq wake state is orthogonal to enable/disable
irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL
irqchip: Some Kconfig cleanup for C-SKY
irqchip/gic-v3: Only provision redistributors that are enabled in ACPI
recent rework of the EFI memory map parsing. On systems with invalid memmap
entries the cleanup function uses an value which cannot be relied on in
this stage. Use the actual EFI memmap entry instead.
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Merge tag 'efi-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fix from Thomas Gleixner:
"A single fix for a EFI boot regression on X86 which was caused by the
recent rework of the EFI memory map parsing. On systems with invalid
memmap entries the cleanup function uses an value which cannot be
relied on in this stage. Use the actual EFI memmap entry instead"
* tag 'efi-urgent-2020-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/x86: Fix boot regression on systems with invalid memmap entries
Five small patches, all in drivers or doc, which missed the initial
pull request. The qla2xxx and megaraid_sas are actual fixes and the
rest are spelling and doc changes.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull misc SCSI fixes from James Bottomley:
"Five small patches, all in drivers or doc, which missed the initial
pull request.
The qla2xxx and megaraid_sas are actual fixes and the rest are
spelling and doc changes"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: fix spelling mistake "initilized" -> "initialized"
scsi: pm80xx: fix spelling mistake "to" -> "too"
scsi: MAINTAINERS: ufs: remove pedrom.sousa@synopsys.com
scsi: megaraid_sas: fixup MSIx interrupt setup during resume
scsi: qla2xxx: Fix unbound NVME response length
Pull networking fixes from David Miller:
1) Unbalanced locking in mwifiex_process_country_ie, from Brian Norris.
2) Fix thermal zone registration in iwlwifi, from Andrei
Otcheretianski.
3) Fix double free_irq in sgi ioc3 eth, from Thomas Bogendoerfer.
4) Use after free in mptcp, from Florian Westphal.
5) Use after free in wireguard's root_remove_peer_lists, from Eric
Dumazet.
6) Properly access packets heads in bonding alb code, from Eric
Dumazet.
7) Fix data race in skb_queue_len(), from Qian Cai.
8) Fix regression in r8169 on some chips, from Heiner Kallweit.
9) Fix XDP program ref counting in hv_netvsc, from Haiyang Zhang.
10) Certain kinds of set link netlink operations can cause a NULL deref
in the ipv6 addrconf code. Fix from Eric Dumazet.
11) Don't cancel uninitialized work queue in drop monitor, from Ido
Schimmel.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (84 commits)
net: thunderx: use proper interface type for RGMII
mt76: mt7615: fix max_nss in mt7615_eeprom_parse_hw_cap
bpf: Improve bucket_log calculation logic
selftests/bpf: Test freeing sockmap/sockhash with a socket in it
bpf, sockhash: Synchronize_rcu before free'ing map
bpf, sockmap: Don't sleep while holding RCU lock on tear-down
bpftool: Don't crash on missing xlated program instructions
bpf, sockmap: Check update requirements after locking
drop_monitor: Do not cancel uninitialized work item
mlxsw: spectrum_dpipe: Add missing error path
mlxsw: core: Add validation of hardware device types for MGPIR register
mlxsw: spectrum_router: Clear offload indication from IPv6 nexthops on abort
selftests: mlxsw: Add test cases for local table route replacement
mlxsw: spectrum_router: Prevent incorrect replacement of local table routes
net: dsa: microchip: enable module autoprobe
ipv6/addrconf: fix potential NULL deref in inet6_set_link_af()
dpaa_eth: support all modes with rate adapting PHYs
net: stmmac: update pci platform data to use phy_interface
net: stmmac: xgmac: fix missing IFF_MULTICAST checki in dwxgmac2_set_filter
net: stmmac: fix missing IFF_MULTICAST check in dwmac4_set_filter
...
VirtualBox hosts can share folders with guests, this commit adds a
VFS driver implementing the Linux-guest side of this, allowing folders
exported by the host to be mounted under Linux.
This driver depends on the guest <-> host IPC functions exported by
the vboxguest driver.
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fix an existing bug in our user access handling, exposed by one of the bug fixes
we merged this cycle.
A fix for a boot hang on 32-bit with CONFIG_TRACE_IRQFLAGS and the recently
added CONFIG_VMAP_STACK.
Thanks to:
Christophe Leroy, Guenter Roeck.
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Merge tag 'powerpc-5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix an existing bug in our user access handling, exposed by one of
the bug fixes we merged this cycle.
- A fix for a boot hang on 32-bit with CONFIG_TRACE_IRQFLAGS and the
recently added CONFIG_VMAP_STACK.
Thanks to: Christophe Leroy, Guenter Roeck.
* tag 'powerpc-5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Fix CONFIG_TRACE_IRQFLAGS with CONFIG_VMAP_STACK
powerpc/futex: Fix incorrect user access blocking
This is a merge error on my part - the driver was merged into mainline
by commit c5951e7c8e ("Merge tag 'mips_5.6' of git://../mips/linux")
over a week ago, but nobody apparently noticed that it didn't actually
build due to still having a reference to the devm_ioremap_nocache()
function, removed a few days earlier through commit 6a1000bd27 ("Merge
tag 'ioremap-5.6' of git://../ioremap").
Apparently this didn't get any build testing anywhere. Not perhaps all
that surprising: it's restricted to 64-bit MIPS only, and only with the
new SGI_MFD_IOC3 support enabled.
I only noticed because the ioremap conflicts in the ARM SoC driver
update made me check there weren't any others hiding, and I found this
one.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is some material that we picked up into our tree late, or that had
more complex dependencies on more than one topic branch that makes sense
to keep separately.
- TI support for secure accelerators and hwrng on OMAP4/5
- TI camera changes for dra7 and am437x and SGX improvement due to better
reset control support on am335x, am437x and dra7
- Davinci moves to proper clocksource on DM365, and regulator/audio
improvements for DM365 and DM644x eval boards
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Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC late updates from Olof Johansson:
"This is some material that we picked up into our tree late, or that
had more complex dependencies on more than one topic branch that makes
sense to keep separately.
- TI support for secure accelerators and hwrng on OMAP4/5
- TI camera changes for dra7 and am437x and SGX improvement due to
better reset control support on am335x, am437x and dra7
- Davinci moves to proper clocksource on DM365, and regulator/audio
improvements for DM365 and DM644x eval boards"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (32 commits)
ARM: dts: omap4-droid4: Enable hdq for droid4 ds250x 1-wire battery nvmem
ARM: dts: motorola-cpcap-mapphone: Configure calibration interrupt
ARM: dts: Configure interconnect target module for am437x sgx
ARM: dts: Configure sgx for dra7
ARM: dts: Configure rstctrl reset for am335x SGX
ARM: dts: dra7: Add ti-sysc node for VPE
ARM: dts: dra7: add vpe clkctrl node
ARM: dts: am43x-epos-evm: Add VPFE and OV2659 entries
ARM: dts: am437x-sk-evm: Add VPFE and OV2659 entries
ARM: dts: am43xx: add support for clkout1 clock
arm: dts: dra76-evm: Add CAL and OV5640 nodes
arm: dtsi: dra76x: Add CAL dtsi node
arm: dts: dra72-evm-common: Add entries for the CSI2 cameras
ARM: dts: DRA72: Add CAL dtsi node
ARM: dts: dra7-l4: Add ti-sysc node for CAM
ARM: OMAP: DRA7xx: Make CAM clock domain SWSUP only
ARM: dts: dra7: add cam clkctrl node
ARM: OMAP2+: Drop legacy platform data for omap4 des
ARM: OMAP2+: Drop legacy platform data for omap4 sham
ARM: OMAP2+: Drop legacy platform data for omap4 aes
...
We keep this in a separate branch to avoid cross-branch conflicts, but
most of the material here is fairly boring -- some new drivers turned on
for hardware since they were merged, and some refreshed files due to
time having moved a lot of entries around.
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Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC defconfig updates from Olof Johansson:
"We keep this in a separate branch to avoid cross-branch conflicts, but
most of the material here is fairly boring -- some new drivers turned
on for hardware since they were merged, and some refreshed files due
to time having moved a lot of entries around"
* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (38 commits)
ARM: configs: at91: enable MMC_SDHCI_OF_AT91 and MICROCHIP_PIT64B
arm64: defconfig: Enable Broadcom's GENET Ethernet controller
ARM: multi_v7_defconfig: Enable devfreq thermal integration
ARM: exynos_defconfig: Enable devfreq thermal integration
ARM: multi_v7_defconfig: Enable NFS v4.1 and v4.2
ARM: exynos_defconfig: Enable NFS v4.1 and v4.2
arm64: defconfig: Enable Actions Semi specific drivers
arm64: defconfig: Enable Broadcom's STB PCIe controller
arm64: defconfig: Enable CONFIG_CLK_IMX8MP by default
ARM: configs: at91: enable config flags for sam9x60 SoC
ARM: configs: at91: use savedefconfig
arm64: defconfig: Enable tegra XUDC support
ARM: defconfig: gemini: Update defconfig
arm64: defconfig: enable CONFIG_ARM_QCOM_CPUFREQ_NVMEM
arm64: defconfig: enable CONFIG_QCOM_CPR
arm64: defconfig: Enable HFPLL
arm64: defconfig: Enable CRYPTO_DEV_FSL_CAAM
ARM: imx_v6_v7_defconfig: Select the TFP410 driver
ARM: imx_v6_v7_defconfig: Enable NFS_V4_1 and NFS_V4_2 support
arm64: defconfig: Enable ATH10K_SNOC
...
Various driver updates for platforms:
- Nvidia: Fuse support for Tegra194, continued memory controller pieces
for Tegra30
- NXP/FSL: Refactorings of QuickEngine drivers to support ARM/ARM64/PPC
- NXP/FSL: i.MX8MP SoC driver pieces
- TI Keystone: ring accelerator driver
- Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.
- Xilinx ZynqMP: feature checking interface for firmware. Mailbox
communication for power management
- Overall support patch set for cpuidle on more complex hierarchies
(PSCI-based)
+ Misc cleanups, refactorings of Marvell, TI, other platforms.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms:
- Nvidia: Fuse support for Tegra194, continued memory controller
pieces for Tegra30
- NXP/FSL: Refactorings of QuickEngine drivers to support
ARM/ARM64/PPC
- NXP/FSL: i.MX8MP SoC driver pieces
- TI Keystone: ring accelerator driver
- Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.
- Xilinx ZynqMP: feature checking interface for firmware. Mailbox
communication for power management
- Overall support patch set for cpuidle on more complex hierarchies
(PSCI-based)
and misc cleanups, refactorings of Marvell, TI, other platforms"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits)
drivers: soc: xilinx: Use mailbox IPI callback
dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox
drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists
MAINTAINERS: Add brcmstb PCIe controller entry
soc/tegra: fuse: Unmap registers once they are not needed anymore
soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
soc/tegra: fuse: Warn if straps are not ready
soc/tegra: fuse: Cache values of straps and Chip ID registers
memory: tegra30-emc: Correct error message for timed out auto calibration
memory: tegra30-emc: Firm up hardware programming sequence
memory: tegra30-emc: Firm up suspend/resume sequence
soc/tegra: regulators: Do nothing if voltage is unchanged
memory: tegra: Correct reset value of xusb_hostr
soc/tegra: fuse: Add APB DMA dependency for Tegra20
bus: tegra-aconnect: Remove PM_CLK dependency
dt-bindings: mediatek: add MT6765 power dt-bindings
soc: mediatek: cmdq: delete not used define
memory: tegra: Add support for the Tegra194 memory controller
memory: tegra: Only include support for enabled SoCs
memory: tegra: Support DVFS on Tegra186 and later
...
Most of these are smaller fixes that have accrued, and some continued
cleanup of OMAP platforms towards shared frameworks.
One new SoC from Atmel/Microchip: sam9x60.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
"Most of these are smaller fixes that have accrued, and some continued
cleanup of OMAP platforms towards shared frameworks.
One new SoC from Atmel/Microchip: sam9x60"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (35 commits)
ARM: OMAP2+: Fix undefined reference to omap_secure_init
ARM: s3c64xx: Drop unneeded select of TIMER_OF
ARM: exynos: Drop unneeded select of MIGHT_HAVE_CACHE_L2X0
ARM: s3c24xx: Switch to atomic pwm API in rx1950
ARM: OMAP2+: sleep43xx: Call secure suspend/resume handlers
ARM: OMAP2+: Use ARM SMC Calling Convention when OP-TEE is available
ARM: OMAP2+: Introduce check for OP-TEE in omap_secure_init()
ARM: OMAP2+: Add omap_secure_init callback hook for secure initialization
ARM: at91: Documentation: add sam9x60 product and datasheet
ARM: at91: pm: use of_device_id array to find the proper shdwc node
ARM: at91: pm: use SAM9X60 PMC's compatible
ARM: imx: only select ARM_ERRATA_814220 for ARMv7-A
ARM: zynq: use physical cpuid in zynq_slcr_cpu_stop/start
ARM: tegra: Use clk_m CPU on Tegra124 LP1 resume
ARM: tegra: Modify reshift divider during LP1
ARM: tegra: Enable PLLP bypass during Tegra124 LP1
ARM: samsung: Rename Samsung and Exynos to lowercase
ARM: exynos: Correct the help text for platform Kconfig option
ARM: bcm: Select ARM_AMBA for ARCH_BRCMSTB
ARM: brcmstb: Add debug UART entry for 7216
...
One patch in the compat-ioctl series broke 32-bit rootfs for multiple
people testing on 64-bit kernels. Let's fix it in -rc1 before others
run into the same issue.
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Merge tag 'compat-ioctl-fix' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground
Pull compat-ioctl fix from Arnd Bergmann:
"One patch in the compat-ioctl series broke 32-bit rootfs for multiple
people testing on 64-bit kernels. Let's fix it in -rc1 before others
run into the same issue"
* tag 'compat-ioctl-fix' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground:
compat_ioctl: fix FIONREAD on devices
Pull vfs file system parameter updates from Al Viro:
"Saner fs_parser.c guts and data structures. The system-wide registry
of syntax types (string/enum/int32/oct32/.../etc.) is gone and so is
the horror switch() in fs_parse() that would have to grow another case
every time something got added to that system-wide registry.
New syntax types can be added by filesystems easily now, and their
namespace is that of functions - not of system-wide enum members. IOW,
they can be shared or kept private and if some turn out to be widely
useful, we can make them common library helpers, etc., without having
to do anything whatsoever to fs_parse() itself.
And we already get that kind of requests - the thing that finally
pushed me into doing that was "oh, and let's add one for timeouts -
things like 15s or 2h". If some filesystem really wants that, let them
do it. Without somebody having to play gatekeeper for the variants
blessed by direct support in fs_parse(), TYVM.
Quite a bit of boilerplate is gone. And IMO the data structures make a
lot more sense now. -200LoC, while we are at it"
* 'merge.nfs-fs_parse.1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (25 commits)
tmpfs: switch to use of invalfc()
cgroup1: switch to use of errorfc() et.al.
procfs: switch to use of invalfc()
hugetlbfs: switch to use of invalfc()
cramfs: switch to use of errofc() et.al.
gfs2: switch to use of errorfc() et.al.
fuse: switch to use errorfc() et.al.
ceph: use errorfc() and friends instead of spelling the prefix out
prefix-handling analogues of errorf() and friends
turn fs_param_is_... into functions
fs_parse: handle optional arguments sanely
fs_parse: fold fs_parameter_desc/fs_parameter_spec
fs_parser: remove fs_parameter_description name field
add prefix to fs_context->log
ceph_parse_param(), ceph_parse_mon_ips(): switch to passing fc_log
new primitive: __fs_parse()
switch rbd and libceph to p_log-based primitives
struct p_log, variants of warnf() et.al. taking that one instead
teach logfc() to handle prefices, give it saner calling conventions
get rid of cg_invalf()
...
Pull misc vfs updates from Al Viro:
- bmap series from cmaiolino
- getting rid of convolutions in copy_mount_options() (use a couple of
copy_from_user() instead of the __get_user() crap)
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
saner copy_mount_options()
fibmap: Reject negative block numbers
fibmap: Use bmap instead of ->bmap method in ioctl_fibmap
ecryptfs: drop direct calls to ->bmap
cachefiles: drop direct usage of ->bmap method.
fs: Enable bmap() function to properly return errors
Merge thundering herd avoidance on pipe IO.
This would have been applied for 5.5 already, but got delayed because of
a user-space race condition in the GNU make jobserver code. Now that
there's a new GNU make 4.3 release, and most distributions seem to have
at least applied the (almost three year old) fix for the problem, let's
see if people notice.
And it might have been just bad random timing luck on my machine.
If you do hit the race condition, things will still work, but the
symptom is that you don't get nearly the expected parallelism when using
"make -j<N>".
The jobserver bug can definitely happen without this patch too, but
seems to be easier to trigger when we no longer wake up pipe waiters
unnecessarily.
* pipe-exclusive-wakeup:
pipe: use exclusive waits when reading or writing
This makes the pipe code use separate wait-queues and exclusive waiting
for readers and writers, avoiding a nasty thundering herd problem when
there are lots of readers waiting for data on a pipe (or, less commonly,
lots of writers waiting for a pipe to have space).
While this isn't a common occurrence in the traditional "use a pipe as a
data transport" case, where you typically only have a single reader and
a single writer process, there is one common special case: using a pipe
as a source of "locking tokens" rather than for data communication.
In particular, the GNU make jobserver code ends up using a pipe as a way
to limit parallelism, where each job consumes a token by reading a byte
from the jobserver pipe, and releases the token by writing a byte back
to the pipe.
This pattern is fairly traditional on Unix, and works very well, but
will waste a lot of time waking up a lot of processes when only a single
reader needs to be woken up when a writer releases a new token.
A simplified test-case of just this pipe interaction is to create 64
processes, and then pass a single token around between them (this
test-case also intentionally passes another token that gets ignored to
test the "wake up next" logic too, in case anybody wonders about it):
#include <unistd.h>
int main(int argc, char **argv)
{
int fd[2], counters[2];
pipe(fd);
counters[0] = 0;
counters[1] = -1;
write(fd[1], counters, sizeof(counters));
/* 64 processes */
fork(); fork(); fork(); fork(); fork(); fork();
do {
int i;
read(fd[0], &i, sizeof(i));
if (i < 0)
continue;
counters[0] = i+1;
write(fd[1], counters, (1+(i & 1)) *sizeof(int));
} while (counters[0] < 1000000);
return 0;
}
and in a perfect world, passing that token around should only cause one
context switch per transfer, when the writer of a token causes a
directed wakeup of just a single reader.
But with the "writer wakes all readers" model we traditionally had, on
my test box the above case causes more than an order of magnitude more
scheduling: instead of the expected ~1M context switches, "perf stat"
shows
231,852.37 msec task-clock # 15.857 CPUs utilized
11,250,961 context-switches # 0.049 M/sec
616,304 cpu-migrations # 0.003 M/sec
1,648 page-faults # 0.007 K/sec
1,097,903,998,514 cycles # 4.735 GHz
120,781,778,352 instructions # 0.11 insn per cycle
27,997,056,043 branches # 120.754 M/sec
283,581,233 branch-misses # 1.01% of all branches
14.621273891 seconds time elapsed
0.018243000 seconds user
3.611468000 seconds sys
before this commit.
After this commit, I get
5,229.55 msec task-clock # 3.072 CPUs utilized
1,212,233 context-switches # 0.232 M/sec
103,951 cpu-migrations # 0.020 M/sec
1,328 page-faults # 0.254 K/sec
21,307,456,166 cycles # 4.074 GHz
12,947,819,999 instructions # 0.61 insn per cycle
2,881,985,678 branches # 551.096 M/sec
64,267,015 branch-misses # 2.23% of all branches
1.702148350 seconds time elapsed
0.004868000 seconds user
0.110786000 seconds sys
instead. Much better.
[ Note! This kernel improvement seems to be very good at triggering a
race condition in the make jobserver (in GNU make 4.2.1) for me. It's
a long known bug that was fixed back in June 2017 by GNU make commit
b552b0525198 ("[SV 51159] Use a non-blocking read with pselect to
avoid hangs.").
But there wasn't a new release of GNU make until 4.3 on Jan 19 2020,
so a number of distributions may still have the buggy version. Some
have backported the fix to their 4.2.1 release, though, and even
without the fix it's quite timing-dependent whether the bug actually
is hit. ]
Josh Triplett says:
"I've been hammering on your pipe fix patch (switching to exclusive
wait queues) for a month or so, on several different systems, and I've
run into no issues with it. The patch *substantially* improves
parallel build times on large (~100 CPU) systems, both with parallel
make and with other things that use make's pipe-based jobserver.
All current distributions (including stable and long-term stable
distributions) have versions of GNU make that no longer have the
jobserver bug"
Tested-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
My final cleanup patch for sys_compat_ioctl() introduced a regression on
the FIONREAD ioctl command, which is used for both regular and special
files, but only works on regular files after my patch, as I had missed
the warning that Al Viro put into a comment right above it.
Change it back so it can work on any file again by moving the implementation
to do_vfs_ioctl() instead.
Fixes: 77b9040195 ("compat_ioctl: simplify the implementation")
Reported-and-tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Reported-and-tested-by: youling257 <youling257@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The configuration of the OCTEONTX XCV_DLL_CTL register via
xcv_init_hw() is such that the RGMII RX delay is bypassed
leaving the RGMII TX delay enabled in the MAC:
/* Configure DLL - enable or bypass
* TX no bypass, RX bypass
*/
cfg = readq_relaxed(xcv->reg_base + XCV_DLL_CTL);
cfg &= ~0xFF03;
cfg |= CLKRX_BYP;
writeq_relaxed(cfg, xcv->reg_base + XCV_DLL_CTL);
This would coorespond to a interface type of PHY_INTERFACE_MODE_RGMII_RXID
and not PHY_INTERFACE_MODE_RGMII.
Fixing this allows RGMII PHY drivers to do the right thing (enable
RX delay in the PHY) instead of erroneously enabling both delays in the
PHY.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
First set of fixes for v5.6. Buffer overflow fixes to mwifiex, quite a
few functionality fixes to iwlwifi and smaller fixes to other drivers.
mwifiex
* fix an unlock from a previous security fix
* fix two buffer overflows
libertas
* fix two bugs from previous security fixes
iwlwifi
* fix module removal with multiple NICs
* don't treat IGTK removal failure as an error
* avoid FW crashes due to DTS measurement races
* fix a potential use after free in FTM code
* prevent a NULL pointer dereference in iwl_mvm_cfg_he_sta()
* fix TDLS discovery
* check all CPUs when trying to detect an error during resume
rtw88
* fix clang warning
mt76
* fix reading of max_nss value from a register
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Merge tag 'wireless-drivers-2020-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for v5.6
First set of fixes for v5.6. Buffer overflow fixes to mwifiex, quite a
few functionality fixes to iwlwifi and smaller fixes to other drivers.
mwifiex
* fix an unlock from a previous security fix
* fix two buffer overflows
libertas
* fix two bugs from previous security fixes
iwlwifi
* fix module removal with multiple NICs
* don't treat IGTK removal failure as an error
* avoid FW crashes due to DTS measurement races
* fix a potential use after free in FTM code
* prevent a NULL pointer dereference in iwl_mvm_cfg_he_sta()
* fix TDLS discovery
* check all CPUs when trying to detect an error during resume
rtw88
* fix clang warning
mt76
* fix reading of max_nss value from a register
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann says:
====================
pull-request: bpf 2020-02-07
The following pull-request contains BPF updates for your *net* tree.
We've added 15 non-merge commits during the last 10 day(s) which contain
a total of 12 files changed, 114 insertions(+), 31 deletions(-).
The main changes are:
1) Various BPF sockmap fixes related to RCU handling in the map's tear-
down code, from Jakub Sitnicki.
2) Fix macro state explosion in BPF sk_storage map when calculating its
bucket_log on allocation, from Martin KaFai Lau.
3) Fix potential BPF sockmap update race by rechecking socket's established
state under lock, from Lorenz Bauer.
4) Fix crash in bpftool on missing xlated instructions when kptr_restrict
sysctl is set, from Toke Høiland-Jørgensen.
5) Fix i40e's XSK wakeup code to return proper error in busy state and
various misc fixes in xdpsock BPF sample code, from Maciej Fijalkowski.
6) Fix the way modifiers are skipped in BTF in the verifier while walking
pointers to avoid program rejection, from Alexei Starovoitov.
7) Fix Makefile for runqslower BPF tool to i) rebuild on libbpf changes and
ii) to fix undefined reference linker errors for older gcc version due to
order of passed gcc parameters, from Yulia Kartseva and Song Liu.
8) Fix a trampoline_count BPF kselftest warning about missing braces around
initializer, from Andrii Nakryiko.
9) Fix up redundant "HAVE" prefix from large INSN limit kernel probe in
bpftool, from Michal Rostecki.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When CONFIG_PROVE_LOCKING is selected together with (now default)
CONFIG_VMAP_STACK, kernel enter deadlock during boot.
At the point of checking whether interrupts are enabled or not, the
value of MSR saved on stack is read using the physical address of the
stack. But at this point, when using VMAP stack the DATA MMU
translation has already been re-enabled, leading to deadlock.
Don't use the physical address of the stack when
CONFIG_VMAP_STACK is set.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 028474876f ("powerpc/32: prepare for CONFIG_VMAP_STACK")
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/daeacdc0dec0416d1c587cc9f9e7191ad3068dc0.1581095957.git.christophe.leroy@c-s.fr
The early versions of our kernel user access prevention (KUAP) were
written by Russell and Christophe, and didn't have separate
read/write access.
At some point I picked up the series and added the read/write access,
but I failed to update the usages in futex.h to correctly allow read
and write.
However we didn't notice because of another bug which was causing the
low-level code to always enable read and write. That bug was fixed
recently in commit 1d8f739b07 ("powerpc/kuap: Fix set direction in
allow/prevent_user_access()").
futex_atomic_cmpxchg_inatomic() is passed the user address as %3 and
does:
1: lwarx %1, 0, %3
cmpw 0, %1, %4
bne- 3f
2: stwcx. %5, 0, %3
Which clearly loads and stores from/to %3. The logic in
arch_futex_atomic_op_inuser() is similar, so fix both of them to use
allow_read_write_user().
Without this fix, and with PPC_KUAP_DEBUG=y, we see eg:
Bug: Read fault blocked by AMR!
WARNING: CPU: 94 PID: 149215 at arch/powerpc/include/asm/book3s/64/kup-radix.h:126 __do_page_fault+0x600/0xf30
CPU: 94 PID: 149215 Comm: futex_requeue_p Tainted: G W 5.5.0-rc7-gcc9x-g4c25df5640ae #1
...
NIP [c000000000070680] __do_page_fault+0x600/0xf30
LR [c00000000007067c] __do_page_fault+0x5fc/0xf30
Call Trace:
[c00020138e5637e0] [c00000000007067c] __do_page_fault+0x5fc/0xf30 (unreliable)
[c00020138e5638c0] [c00000000000ada8] handle_page_fault+0x10/0x30
--- interrupt: 301 at cmpxchg_futex_value_locked+0x68/0xd0
LR = futex_lock_pi_atomic+0xe0/0x1f0
[c00020138e563bc0] [c000000000217b50] futex_lock_pi_atomic+0x80/0x1f0 (unreliable)
[c00020138e563c30] [c00000000021b668] futex_requeue+0x438/0xb60
[c00020138e563d60] [c00000000021c6cc] do_futex+0x1ec/0x2b0
[c00020138e563d90] [c00000000021c8b8] sys_futex+0x128/0x200
[c00020138e563e20] [c00000000000b7ac] system_call+0x5c/0x68
Fixes: de78a9c42a ("powerpc: Add a framework for Kernel Userspace Access Protection")
Cc: stable@vger.kernel.org # v5.2+
Reported-by: syzbot+e808452bad7c375cbee6@syzkaller-ppc64.appspotmail.com
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Christophe Leroy <christophe.leroy@c-s.fr>
Link: https://lore.kernel.org/r/20200207122145.11928-1-mpe@ellerman.id.au
V{PEND,PROP}BASER registers are actually located in VLPI_base frame
of the *redistributor*. Rename their accessors to reflect this fact.
No functional changes.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200206075711.1275-7-yuzenghui@huawei.com
"ITS virtual pending table not cleaning" is already complained inside
its_clear_vpend_valid(), there's no need to trigger a WARN_ON again.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200206075711.1275-6-yuzenghui@huawei.com
In GICv4, we will ensure that level2 vPE table memory is allocated
for the specified vpe_id on all v4 ITS, in its_alloc_vpe_table().
This still works well for the typical GICv4.1 implementation, where
the new vPE table is shared between the ITSs and the RDs.
To make it explicit, let us introduce allocate_vpe_l2_table() to
make sure that the L2 tables are allocated on all v4.1 RDs. We're
likely not need to allocate memory in it because the vPE table is
shared and (L2 table is) already allocated at ITS level, except
for the case where the ITS doesn't share anything (say SVPET == 0,
practically unlikely but architecturally allowed).
The implementation of allocate_vpe_l2_table() is mostly copied from
its_alloc_table_entry().
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200206075711.1275-4-yuzenghui@huawei.com
Currently, we will not set vpe_l1_page for the current RD if we can
inherit the vPE configuration table from another RD (or ITS), which
results in an inconsistency between RDs within the same CommonLPIAff
group.
Let's rename it to vpe_l1_base to indicate the base address of the
vPE configuration table of this RD, and set it properly for *all*
v4.1 redistributors.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200206075711.1275-3-yuzenghui@huawei.com
The Size field of GICv4.1 VPROPBASER register indicates number of
pages minus one and together Page_Size and Size control the vPEID
width. Let's respect this requirement of the architecture.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200206075711.1275-2-yuzenghui@huawei.com
Fix u8 cast reading max_nss from MT_TOP_STRAP_STA register in
mt7615_eeprom_parse_hw_cap routine
Fixes: acf5457fd9 ("mt76: mt7615: read {tx,rx} mask from eeprom")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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Merge tag 'fuse-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fixes from Miklos Szeredi:
- Fix a regression introduced in v5.1 that triggers WARNINGs for some
fuse filesystems
- Fix an xfstest failure
- Allow overlayfs to be used on top of fuse/virtiofs
- Code and documentation cleanups
* tag 'fuse-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: use true,false for bool variable
Documentation: filesystems: convert fuse to RST
fuse: Support RENAME_WHITEOUT flag
fuse: don't overflow LLONG_MAX with end offset
fix up iter on short count in fuse_direct_io()
- Fix a bug in Abhi Das's journal head lookup improvements that can cause a
valid journal to be rejected.
- Fix an O_SYNC write handling bug reported by Christoph Hellwig.
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Merge tag 'gfs2-for-5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 fixes from Andreas Gruenbacher:
- Fix a bug in Abhi Das's journal head lookup improvements that can
cause a valid journal to be rejected.
- Fix an O_SYNC write handling bug reported by Christoph Hellwig.
* tag 'gfs2-for-5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: fix O_SYNC write handling
gfs2: move setting current->backing_dev_info
gfs2: fix gfs2_find_jhead that returns uninitialized jhead with seq 0
