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Merge branch 'x86/urgent' into x86/asm to fix up conflicts and to pick up fixes

Browse Source 
Conflicts:
	arch/x86/entry/entry_64_compat.S
	arch/x86/math-emu/get_address.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-08-18 09:39:47 +02:00
commit a5dd192496
576 changed files with 7106 additions and 3651 deletions
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1
.mailmap
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@ -17,6 +17,7 @@ Aleksey Gorelov <aleksey_gorelov@phoenix.com>
Al Viro <viro@ftp.linux.org.uk>
Al Viro <viro@zenIV.linux.org.uk>
Andreas Herrmann <aherrman@de.ibm.com>
Andrey Ryabinin <ryabinin.a.a@gmail.com> <a.ryabinin@samsung.com>
Andrew Morton <akpm@linux-foundation.org>
Andrew Vasquez <andrew.vasquez@qlogic.com>
Andy Adamson <andros@citi.umich.edu>

1
Documentation/devicetree/bindings/arm/cpus.txt
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@ -199,6 +199,7 @@ nodes to be present and contain the properties described below.
"qcom,kpss-acc-v1"
"qcom,kpss-acc-v2"
"rockchip,rk3066-smp"
"ste,dbx500-smp"
- cpu-release-addr
Usage: required for systems that have an "enable-method"

2
Documentation/devicetree/bindings/dma/apm-xgene-dma.txt
View File

@ -35,7 +35,7 @@ Example:
device_type = "dma";
reg = <0x0 0x1f270000 0x0 0x10000>,
<0x0 0x1f200000 0x0 0x10000>,
<0x0 0x1b008000 0x0 0x2000>,
<0x0 0x1b000000 0x0 0x400000>,
<0x0 0x1054a000 0x0 0x100>;
interrupts = <0x0 0x82 0x4>,
<0x0 0xb8 0x4>,

16
Documentation/devicetree/bindings/phy/ti-phy.txt
View File

@ -82,6 +82,9 @@ Optional properties:
- id: If there are multiple instance of the same type, in order to
differentiate between each instance "id" can be used (e.g., multi-lane PCIe
PHY). If "id" is not provided, it is set to default value of '1'.
- syscon-pllreset: Handle to system control region that contains the
CTRL_CORE_SMA_SW_0 register and register offset to the CTRL_CORE_SMA_SW_0
register that contains the SATA_PLL_SOFT_RESET bit. Only valid for sata_phy.
This is usually a subnode of ocp2scp to which it is connected.
@ -100,3 +103,16 @@ usb3phy@4a084400 {
"sysclk",
"refclk";
};
sata_phy: phy@4A096000 {
compatible = "ti,phy-pipe3-sata";
reg = <0x4A096000 0x80>, /* phy_rx */
<0x4A096400 0x64>, /* phy_tx */
<0x4A096800 0x40>; /* pll_ctrl */
reg-names = "phy_rx", "phy_tx", "pll_ctrl";
ctrl-module = <&omap_control_sata>;
clocks = <&sys_clkin1>, <&sata_ref_clk>;
clock-names = "sysclk", "refclk";
syscon-pllreset = <&scm_conf 0x3fc>;
#phy-cells = <0>;
};

2
Documentation/devicetree/bindings/sound/mt8173-max98090.txt
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@ -3,11 +3,13 @@ MT8173 with MAX98090 CODEC
Required properties:
- compatible : "mediatek,mt8173-max98090"
- mediatek,audio-codec: the phandle of the MAX98090 audio codec
- mediatek,platform: the phandle of MT8173 ASoC platform
Example:
sound {
compatible = "mediatek,mt8173-max98090";
mediatek,audio-codec = <&max98090>;
mediatek,platform = <&afe>;
};

2
Documentation/devicetree/bindings/sound/mt8173-rt5650-rt5676.txt
View File

@ -3,11 +3,13 @@ MT8173 with RT5650 RT5676 CODECS
Required properties:
- compatible : "mediatek,mt8173-rt5650-rt5676"
- mediatek,audio-codec: the phandles of rt5650 and rt5676 codecs
- mediatek,platform: the phandle of MT8173 ASoC platform
Example:
sound {
compatible = "mediatek,mt8173-rt5650-rt5676";
mediatek,audio-codec = <&rt5650 &rt5676>;
mediatek,platform = <&afe>;
};

6
Documentation/devicetree/bindings/spi/spi-ath79.txt
View File

@ -3,7 +3,7 @@ Binding for Qualcomm Atheros AR7xxx/AR9xxx SPI controller
Required properties:
- compatible: has to be "qca,<soc-type>-spi", "qca,ar7100-spi" as fallback.
- reg: Base address and size of the controllers memory area
- clocks: phandle to the AHB clock.
- clocks: phandle of the AHB clock.
- clock-names: has to be "ahb".
- #address-cells: <1>, as required by generic SPI binding.
- #size-cells: <0>, also as required by generic SPI binding.
@ -12,9 +12,9 @@ Child nodes as per the generic SPI binding.
Example:
spi@1F000000 {
spi@1f000000 {
compatible = "qca,ar9132-spi", "qca,ar7100-spi";
reg = <0x1F000000 0x10>;
reg = <0x1f000000 0x10>;
clocks = <&pll 2>;
clock-names = "ahb";

4
Documentation/hwmon/nct7904
View File

@ -35,11 +35,11 @@ temp1_input Local temperature (1/1000 degree,
temp[2-9]_input CPU temperatures (1/1000 degree,
0.125 degree resolution)
fan[1-4]_mode R/W, 0/1 for manual or SmartFan mode
pwm[1-4]_enable R/W, 1/2 for manual or SmartFan mode
Setting SmartFan mode is supported only if it has been
previously configured by BIOS (or configuration EEPROM)
fan[1-4]_pwm R/O in SmartFan mode, R/W in manual control mode
pwm[1-4] R/O in SmartFan mode, R/W in manual control mode
The driver checks sensor control registers and does not export the sensors
that are not enabled. Anyway, a sensor that is enabled may actually be not

6
Documentation/input/alps.txt
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@ -119,8 +119,10 @@ ALPS Absolute Mode - Protocol Version 2
byte 5: 0 z6 z5 z4 z3 z2 z1 z0
Protocol Version 2 DualPoint devices send standard PS/2 mouse packets for
the DualPoint Stick. For non interleaved dualpoint devices the pointingstick
buttons get reported separately in the PSM, PSR and PSL bits.
the DualPoint Stick. The M, R and L bits signal the combined status of both
the pointingstick and touchpad buttons, except for Dell dualpoint devices
where the pointingstick buttons get reported separately in the PSM, PSR
and PSL bits.
Dualpoint device -- interleaved packet format
---------------------------------------------

21
Documentation/target/tcm_mod_builder.py
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@ -199,7 +199,8 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
buf += "#include <linux/string.h>\n"
buf += "#include <linux/configfs.h>\n"
buf += "#include <linux/ctype.h>\n"
buf += "#include <asm/unaligned.h>\n\n"
buf += "#include <asm/unaligned.h>\n"
buf += "#include <scsi/scsi_proto.h>\n\n"
buf += "#include <target/target_core_base.h>\n"
buf += "#include <target/target_core_fabric.h>\n"
buf += "#include <target/target_core_fabric_configfs.h>\n"
@ -230,8 +231,14 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
buf += " }\n"
buf += " tpg->" + fabric_mod_port + " = " + fabric_mod_port + ";\n"
buf += " tpg->" + fabric_mod_port + "_tpgt = tpgt;\n\n"
buf += " ret = core_tpg_register(&" + fabric_mod_name + "_ops, wwn,\n"
buf += " &tpg->se_tpg, SCSI_PROTOCOL_SAS);\n"
if proto_ident == "FC":
buf += " ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);\n"
elif proto_ident == "SAS":
buf += " ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_SAS);\n"
elif proto_ident == "iSCSI":
buf += " ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_ISCSI);\n"
buf += " if (ret < 0) {\n"
buf += " kfree(tpg);\n"
buf += " return NULL;\n"
@ -292,7 +299,7 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
buf += "static const struct target_core_fabric_ops " + fabric_mod_name + "_ops = {\n"
buf += " .module = THIS_MODULE,\n"
buf += " .name = " + fabric_mod_name + ",\n"
buf += " .name = \"" + fabric_mod_name + "\",\n"
buf += " .get_fabric_name = " + fabric_mod_name + "_get_fabric_name,\n"
buf += " .tpg_get_wwn = " + fabric_mod_name + "_get_fabric_wwn,\n"
buf += " .tpg_get_tag = " + fabric_mod_name + "_get_tag,\n"
@ -322,17 +329,17 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
buf += " .fabric_make_tpg = " + fabric_mod_name + "_make_tpg,\n"
buf += " .fabric_drop_tpg = " + fabric_mod_name + "_drop_tpg,\n"
buf += "\n"
buf += " .tfc_wwn_attrs = " + fabric_mod_name + "_wwn_attrs;\n"
buf += " .tfc_wwn_attrs = " + fabric_mod_name + "_wwn_attrs,\n"
buf += "};\n\n"
buf += "static int __init " + fabric_mod_name + "_init(void)\n"
buf += "{\n"
buf += " return target_register_template(" + fabric_mod_name + "_ops);\n"
buf += " return target_register_template(&" + fabric_mod_name + "_ops);\n"
buf += "};\n\n"
buf += "static void __exit " + fabric_mod_name + "_exit(void)\n"
buf += "{\n"
buf += " target_unregister_template(" + fabric_mod_name + "_ops);\n"
buf += " target_unregister_template(&" + fabric_mod_name + "_ops);\n"
buf += "};\n\n"
buf += "MODULE_DESCRIPTION(\"" + fabric_mod_name.upper() + " series fabric driver\");\n"

15
MAINTAINERS
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@ -3587,6 +3587,15 @@ S: Maintained
F: drivers/gpu/drm/rockchip/
F: Documentation/devicetree/bindings/video/rockchip*
DRM DRIVERS FOR STI
M: Benjamin Gaignard <benjamin.gaignard@linaro.org>
M: Vincent Abriou <vincent.abriou@st.com>
L: dri-devel@lists.freedesktop.org
T: git http://git.linaro.org/people/benjamin.gaignard/kernel.git
S: Maintained
F: drivers/gpu/drm/sti
F: Documentation/devicetree/bindings/gpu/st,stih4xx.txt
DSBR100 USB FM RADIO DRIVER
M: Alexey Klimov <klimov.linux@gmail.com>
L: linux-media@vger.kernel.org
@ -5600,6 +5609,7 @@ F: kernel/irq/
IRQCHIP DRIVERS
M: Thomas Gleixner <tglx@linutronix.de>
M: Jason Cooper <jason@lakedaemon.net>
M: Marc Zyngier <marc.zyngier@arm.com>
L: linux-kernel@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
@ -5608,11 +5618,14 @@ F: Documentation/devicetree/bindings/interrupt-controller/
F: drivers/irqchip/
IRQ DOMAINS (IRQ NUMBER MAPPING LIBRARY)
M: Benjamin Herrenschmidt <benh@kernel.crashing.org>
M: Jiang Liu <jiang.liu@linux.intel.com>
M: Marc Zyngier <marc.zyngier@arm.com>
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
F: Documentation/IRQ-domain.txt
F: include/linux/irqdomain.h
F: kernel/irq/irqdomain.c
F: kernel/irq/msi.c
ISAPNP
M: Jaroslav Kysela <perex@perex.cz>

11
Makefile
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@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 2
SUBLEVEL = 0
EXTRAVERSION = -rc4
EXTRAVERSION = -rc7
NAME = Hurr durr I'ma sheep
# *DOCUMENTATION*
@ -597,6 +597,11 @@ endif # $(dot-config)
# Defaults to vmlinux, but the arch makefile usually adds further targets
all: vmlinux
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
# values of the respective KBUILD_* variables
ARCH_CPPFLAGS :=
ARCH_AFLAGS :=
ARCH_CFLAGS :=
include arch/$(SRCARCH)/Makefile
KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
@ -848,10 +853,10 @@ export mod_strip_cmd
mod_compress_cmd = true
ifdef CONFIG_MODULE_COMPRESS
ifdef CONFIG_MODULE_COMPRESS_GZIP
mod_compress_cmd = gzip -n
mod_compress_cmd = gzip -n -f
endif # CONFIG_MODULE_COMPRESS_GZIP
ifdef CONFIG_MODULE_COMPRESS_XZ
mod_compress_cmd = xz
mod_compress_cmd = xz -f
endif # CONFIG_MODULE_COMPRESS_XZ
endif # CONFIG_MODULE_COMPRESS
export mod_compress_cmd

13
arch/arc/Kconfig
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@ -313,11 +313,11 @@ config ARC_PAGE_SIZE_8K
config ARC_PAGE_SIZE_16K
bool "16KB"
depends on ARC_MMU_V3
depends on ARC_MMU_V3 || ARC_MMU_V4
config ARC_PAGE_SIZE_4K
bool "4KB"
depends on ARC_MMU_V3
depends on ARC_MMU_V3 || ARC_MMU_V4
endchoice
@ -365,6 +365,11 @@ config ARC_HAS_LLSC
default y
depends on !ARC_CANT_LLSC
config ARC_STAR_9000923308
bool "Workaround for llock/scond livelock"
default y
depends on ISA_ARCV2 && SMP && ARC_HAS_LLSC
config ARC_HAS_SWAPE
bool "Insn: SWAPE (endian-swap)"
default y
@ -379,6 +384,10 @@ config ARC_HAS_LL64
dest operands with 2 possible source operands.
default y
config ARC_HAS_DIV_REM
bool "Insn: div, divu, rem, remu"
default y
config ARC_HAS_RTC
bool "Local 64-bit r/o cycle counter"
default n

10
arch/arc/Makefile
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@ -36,8 +36,16 @@ cflags-$(atleast_gcc44) += -fsection-anchors
cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
ifdef CONFIG_ISA_ARCV2
ifndef CONFIG_ARC_HAS_LL64
cflags-$(CONFIG_ISA_ARCV2) += -mno-ll64
cflags-y += -mno-ll64
endif
ifndef CONFIG_ARC_HAS_DIV_REM
cflags-y += -mno-div-rem
endif
endif
cflags-$(CONFIG_ARC_DW2_UNWIND) += -fasynchronous-unwind-tables

7
arch/arc/include/asm/arcregs.h
View File

@ -89,11 +89,10 @@
#define ECR_C_BIT_DTLB_LD_MISS 8
#define ECR_C_BIT_DTLB_ST_MISS 9
/* Auxiliary registers */
#define AUX_IDENTITY 4
#define AUX_INTR_VEC_BASE 0x25
#define AUX_NON_VOL 0x5e
/*
* Floating Pt Registers
@ -240,9 +239,9 @@ struct bcr_extn_xymem {
struct bcr_perip {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int start:8, pad2:8, sz:8, pad:8;
unsigned int start:8, pad2:8, sz:8, ver:8;
#else
unsigned int pad:8, sz:8, pad2:8, start:8;
unsigned int ver:8, sz:8, pad2:8, start:8;
#endif
};

78
arch/arc/include/asm/atomic.h
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@ -23,33 +23,60 @@
#define atomic_set(v, i) (((v)->counter) = (i))
#ifdef CONFIG_ISA_ARCV2
#define PREFETCHW " prefetchw [%1] \n"
#else
#define PREFETCHW
#ifdef CONFIG_ARC_STAR_9000923308
#define SCOND_FAIL_RETRY_VAR_DEF \
unsigned int delay = 1, tmp; \
#define SCOND_FAIL_RETRY_ASM \
" bz 4f \n" \
" ; --- scond fail delay --- \n" \
" mov %[tmp], %[delay] \n" /* tmp = delay */ \
"2: brne.d %[tmp], 0, 2b \n" /* while (tmp != 0) */ \
" sub %[tmp], %[tmp], 1 \n" /* tmp-- */ \
" rol %[delay], %[delay] \n" /* delay *= 2 */ \
" b 1b \n" /* start over */ \
"4: ; --- success --- \n" \
#define SCOND_FAIL_RETRY_VARS \
,[delay] "+&r" (delay),[tmp] "=&r" (tmp) \
#else /* !CONFIG_ARC_STAR_9000923308 */
#define SCOND_FAIL_RETRY_VAR_DEF
#define SCOND_FAIL_RETRY_ASM \
" bnz 1b \n" \
#define SCOND_FAIL_RETRY_VARS
#endif
#define ATOMIC_OP(op, c_op, asm_op) \
static inline void atomic_##op(int i, atomic_t *v) \
{ \
unsigned int temp; \
unsigned int val; \
SCOND_FAIL_RETRY_VAR_DEF \
\
__asm__ __volatile__( \
"1: \n" \
PREFETCHW \
" llock %0, [%1] \n" \
" " #asm_op " %0, %0, %2 \n" \
" scond %0, [%1] \n" \
" bnz 1b \n" \
: "=&r"(temp) /* Early clobber, to prevent reg reuse */ \
: "r"(&v->counter), "ir"(i) \
"1: llock %[val], [%[ctr]] \n" \
" " #asm_op " %[val], %[val], %[i] \n" \
" scond %[val], [%[ctr]] \n" \
" \n" \
SCOND_FAIL_RETRY_ASM \
\
: [val] "=&r" (val) /* Early clobber to prevent reg reuse */ \
SCOND_FAIL_RETRY_VARS \
: [ctr] "r" (&v->counter), /* Not "m": llock only supports reg direct addr mode */ \
[i] "ir" (i) \
: "cc"); \
} \
#define ATOMIC_OP_RETURN(op, c_op, asm_op) \
static inline int atomic_##op##_return(int i, atomic_t *v) \
{ \
unsigned int temp; \
unsigned int val; \
SCOND_FAIL_RETRY_VAR_DEF \
\
/* \
* Explicit full memory barrier needed before/after as \
@ -58,19 +85,21 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \
smp_mb(); \
\
__asm__ __volatile__( \
"1: \n" \
PREFETCHW \
" llock %0, [%1] \n" \
" " #asm_op " %0, %0, %2 \n" \
" scond %0, [%1] \n" \
" bnz 1b \n" \
: "=&r"(temp) \
: "r"(&v->counter), "ir"(i) \
"1: llock %[val], [%[ctr]] \n" \
" " #asm_op " %[val], %[val], %[i] \n" \
" scond %[val], [%[ctr]] \n" \
" \n" \
SCOND_FAIL_RETRY_ASM \
\
: [val] "=&r" (val) \
SCOND_FAIL_RETRY_VARS \
: [ctr] "r" (&v->counter), \
[i] "ir" (i) \
: "cc"); \
\
smp_mb(); \
\
return temp; \
return val; \
}
#else /* !CONFIG_ARC_HAS_LLSC */
@ -150,6 +179,9 @@ ATOMIC_OP(and, &=, and)
#undef ATOMIC_OPS
#undef ATOMIC_OP_RETURN
#undef ATOMIC_OP
#undef SCOND_FAIL_RETRY_VAR_DEF
#undef SCOND_FAIL_RETRY_ASM
#undef SCOND_FAIL_RETRY_VARS
/**
* __atomic_add_unless - add unless the number is a given value

54
arch/arc/include/asm/ptrace.h
View File

@ -20,20 +20,20 @@
struct pt_regs {
/* Real registers */
long bta; /* bta_l1, bta_l2, erbta */
unsigned long bta; /* bta_l1, bta_l2, erbta */
long lp_start, lp_end, lp_count;
unsigned long lp_start, lp_end, lp_count;
long status32; /* status32_l1, status32_l2, erstatus */
long ret; /* ilink1, ilink2 or eret */
long blink;
long fp;
long r26; /* gp */
unsigned long status32; /* status32_l1, status32_l2, erstatus */
unsigned long ret; /* ilink1, ilink2 or eret */
unsigned long blink;
unsigned long fp;
unsigned long r26; /* gp */
long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
long sp; /* user/kernel sp depending on where we came from */
long orig_r0;
unsigned long sp; /* User/Kernel depending on where we came from */
unsigned long orig_r0;
/*
* To distinguish bet excp, syscall, irq
@ -55,13 +55,13 @@ struct pt_regs {
unsigned long event;
};
long user_r25;
unsigned long user_r25;
};
#else
struct pt_regs {
long orig_r0;
unsigned long orig_r0;
union {
struct {
@ -76,26 +76,26 @@ struct pt_regs {
unsigned long event;
};
long bta; /* bta_l1, bta_l2, erbta */
unsigned long bta; /* bta_l1, bta_l2, erbta */
long user_r25;
unsigned long user_r25;
long r26; /* gp */
long fp;
long sp; /* user/kernel sp depending on where we came from */
unsigned long r26; /* gp */
unsigned long fp;
unsigned long sp; /* user/kernel sp depending on where we came from */
long r12;
unsigned long r12;
/*------- Below list auto saved by h/w -----------*/
long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
long blink;
long lp_end, lp_start, lp_count;
unsigned long blink;
unsigned long lp_end, lp_start, lp_count;
long ei, ldi, jli;
unsigned long ei, ldi, jli;
long ret;
long status32;
unsigned long ret;
unsigned long status32;
};
#endif
@ -103,10 +103,10 @@ struct pt_regs {
/* Callee saved registers - need to be saved only when you are scheduled out */
struct callee_regs {
long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
unsigned long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
};
#define instruction_pointer(regs) (unsigned long)((regs)->ret)
#define instruction_pointer(regs) ((regs)->ret)
#define profile_pc(regs) instruction_pointer(regs)
/* return 1 if user mode or 0 if kernel mode */
@ -142,7 +142,7 @@ struct callee_regs {
static inline long regs_return_value(struct pt_regs *regs)
{
return regs->r0;
return (long)regs->r0;
}
#endif /* !__ASSEMBLY__ */

538
arch/arc/include/asm/spinlock.h
View File

@ -18,9 +18,518 @@
#define arch_spin_unlock_wait(x) \
do { while (arch_spin_is_locked(x)) cpu_relax(); } while (0)
#ifdef CONFIG_ARC_HAS_LLSC
/*
* A normal LLOCK/SCOND based system, w/o need for livelock workaround
*/
#ifndef CONFIG_ARC_STAR_9000923308
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
unsigned int tmp = __ARCH_SPIN_LOCK_LOCKED__;
unsigned int val;
smp_mb();
__asm__ __volatile__(
"1: llock %[val], [%[slock]] \n"
" breq %[val], %[LOCKED], 1b \n" /* spin while LOCKED */
" scond %[LOCKED], [%[slock]] \n" /* acquire */
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [slock] "r" (&(lock->slock)),
[LOCKED] "r" (__ARCH_SPIN_LOCK_LOCKED__)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_spin_trylock(arch_spinlock_t *lock)
{
unsigned int val, got_it = 0;
smp_mb();
__asm__ __volatile__(
"1: llock %[val], [%[slock]] \n"
" breq %[val], %[LOCKED], 4f \n" /* already LOCKED, just bail */
" scond %[LOCKED], [%[slock]] \n" /* acquire */
" bnz 1b \n"
" mov %[got_it], 1 \n"
"4: \n"
" \n"
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
: [slock] "r" (&(lock->slock)),
[LOCKED] "r" (__ARCH_SPIN_LOCK_LOCKED__)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_spin_unlock(arch_spinlock_t *lock)
{
smp_mb();
lock->slock = __ARCH_SPIN_LOCK_UNLOCKED__;
smp_mb();
}
/*
* Read-write spinlocks, allowing multiple readers but only one writer.
* Unfair locking as Writers could be starved indefinitely by Reader(s)
*/
static inline void arch_read_lock(arch_rwlock_t *rw)
{
unsigned int val;
smp_mb();
/*
* zero means writer holds the lock exclusively, deny Reader.
* Otherwise grant lock to first/subseq reader
*
* if (rw->counter > 0) {
* rw->counter--;
* ret = 1;
* }
*/
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" brls %[val], %[WR_LOCKED], 1b\n" /* <= 0: spin while write locked */
" sub %[val], %[val], 1 \n" /* reader lock */
" scond %[val], [%[rwlock]] \n"
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [rwlock] "r" (&(rw->counter)),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_read_trylock(arch_rwlock_t *rw)
{
unsigned int val, got_it = 0;
smp_mb();
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" brls %[val], %[WR_LOCKED], 4f\n" /* <= 0: already write locked, bail */
" sub %[val], %[val], 1 \n" /* counter-- */
" scond %[val], [%[rwlock]] \n"
" bnz 1b \n" /* retry if collided with someone */
" mov %[got_it], 1 \n"
" \n"
"4: ; --- done --- \n"
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
: [rwlock] "r" (&(rw->counter)),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_write_lock(arch_rwlock_t *rw)
{
unsigned int val;
smp_mb();
/*
* If reader(s) hold lock (lock < __ARCH_RW_LOCK_UNLOCKED__),
* deny writer. Otherwise if unlocked grant to writer
* Hence the claim that Linux rwlocks are unfair to writers.
* (can be starved for an indefinite time by readers).
*
* if (rw->counter == __ARCH_RW_LOCK_UNLOCKED__) {
* rw->counter = 0;
* ret = 1;
* }
*/
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" brne %[val], %[UNLOCKED], 1b \n" /* while !UNLOCKED spin */
" mov %[val], %[WR_LOCKED] \n"
" scond %[val], [%[rwlock]] \n"
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "ir" (__ARCH_RW_LOCK_UNLOCKED__),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_write_trylock(arch_rwlock_t *rw)
{
unsigned int val, got_it = 0;
smp_mb();
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" brne %[val], %[UNLOCKED], 4f \n" /* !UNLOCKED, bail */
" mov %[val], %[WR_LOCKED] \n"
" scond %[val], [%[rwlock]] \n"
" bnz 1b \n" /* retry if collided with someone */
" mov %[got_it], 1 \n"
" \n"
"4: ; --- done --- \n"
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "ir" (__ARCH_RW_LOCK_UNLOCKED__),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_read_unlock(arch_rwlock_t *rw)
{
unsigned int val;
smp_mb();
/*
* rw->counter++;
*/
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" add %[val], %[val], 1 \n"
" scond %[val], [%[rwlock]] \n"
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [rwlock] "r" (&(rw->counter))
: "memory", "cc");
smp_mb();
}
static inline void arch_write_unlock(arch_rwlock_t *rw)
{
smp_mb();
rw->counter = __ARCH_RW_LOCK_UNLOCKED__;
smp_mb();
}
#else /* CONFIG_ARC_STAR_9000923308 */
/*
* HS38x4 could get into a LLOCK/SCOND livelock in case of multiple overlapping
* coherency transactions in the SCU. The exclusive line state keeps rotating
* among contenting cores leading to a never ending cycle. So break the cycle
* by deferring the retry of failed exclusive access (SCOND). The actual delay
* needed is function of number of contending cores as well as the unrelated
* coherency traffic from other cores. To keep the code simple, start off with
* small delay of 1 which would suffice most cases and in case of contention
* double the delay. Eventually the delay is sufficient such that the coherency
* pipeline is drained, thus a subsequent exclusive access would succeed.
*/
#define SCOND_FAIL_RETRY_VAR_DEF \
unsigned int delay, tmp; \
#define SCOND_FAIL_RETRY_ASM \
" ; --- scond fail delay --- \n" \
" mov %[tmp], %[delay] \n" /* tmp = delay */ \
"2: brne.d %[tmp], 0, 2b \n" /* while (tmp != 0) */ \
" sub %[tmp], %[tmp], 1 \n" /* tmp-- */ \
" rol %[delay], %[delay] \n" /* delay *= 2 */ \
" b 1b \n" /* start over */ \
" \n" \
"4: ; --- done --- \n" \
#define SCOND_FAIL_RETRY_VARS \
,[delay] "=&r" (delay), [tmp] "=&r" (tmp) \
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
unsigned int val;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[slock]] \n"
" breq %[val], %[LOCKED], 0b \n" /* spin while LOCKED */
" scond %[LOCKED], [%[slock]] \n" /* acquire */
" bz 4f \n" /* done */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val)
SCOND_FAIL_RETRY_VARS
: [slock] "r" (&(lock->slock)),
[LOCKED] "r" (__ARCH_SPIN_LOCK_LOCKED__)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_spin_trylock(arch_spinlock_t *lock)
{
unsigned int val, got_it = 0;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[slock]] \n"
" breq %[val], %[LOCKED], 4f \n" /* already LOCKED, just bail */
" scond %[LOCKED], [%[slock]] \n" /* acquire */
" bz.d 4f \n"
" mov.z %[got_it], 1 \n" /* got it */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
SCOND_FAIL_RETRY_VARS
: [slock] "r" (&(lock->slock)),
[LOCKED] "r" (__ARCH_SPIN_LOCK_LOCKED__)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_spin_unlock(arch_spinlock_t *lock)
{
smp_mb();
lock->slock = __ARCH_SPIN_LOCK_UNLOCKED__;
smp_mb();
}
/*
* Read-write spinlocks, allowing multiple readers but only one writer.
* Unfair locking as Writers could be starved indefinitely by Reader(s)
*/
static inline void arch_read_lock(arch_rwlock_t *rw)
{
unsigned int val;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
/*
* zero means writer holds the lock exclusively, deny Reader.
* Otherwise grant lock to first/subseq reader
*
* if (rw->counter > 0) {
* rw->counter--;
* ret = 1;
* }
*/
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brls %[val], %[WR_LOCKED], 0b\n" /* <= 0: spin while write locked */
" sub %[val], %[val], 1 \n" /* reader lock */
" scond %[val], [%[rwlock]] \n"
" bz 4f \n" /* done */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_read_trylock(arch_rwlock_t *rw)
{
unsigned int val, got_it = 0;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brls %[val], %[WR_LOCKED], 4f\n" /* <= 0: already write locked, bail */
" sub %[val], %[val], 1 \n" /* counter-- */
" scond %[val], [%[rwlock]] \n"
" bz.d 4f \n"
" mov.z %[got_it], 1 \n" /* got it */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_write_lock(arch_rwlock_t *rw)
{
unsigned int val;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
/*
* If reader(s) hold lock (lock < __ARCH_RW_LOCK_UNLOCKED__),
* deny writer. Otherwise if unlocked grant to writer
* Hence the claim that Linux rwlocks are unfair to writers.
* (can be starved for an indefinite time by readers).
*
* if (rw->counter == __ARCH_RW_LOCK_UNLOCKED__) {
* rw->counter = 0;
* ret = 1;
* }
*/
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brne %[val], %[UNLOCKED], 0b \n" /* while !UNLOCKED spin */
" mov %[val], %[WR_LOCKED] \n"
" scond %[val], [%[rwlock]] \n"
" bz 4f \n"
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "ir" (__ARCH_RW_LOCK_UNLOCKED__),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_write_trylock(arch_rwlock_t *rw)
{
unsigned int val, got_it = 0;
SCOND_FAIL_RETRY_VAR_DEF;
smp_mb();
__asm__ __volatile__(
"0: mov %[delay], 1 \n"
"1: llock %[val], [%[rwlock]] \n"
" brne %[val], %[UNLOCKED], 4f \n" /* !UNLOCKED, bail */
" mov %[val], %[WR_LOCKED] \n"
" scond %[val], [%[rwlock]] \n"
" bz.d 4f \n"
" mov.z %[got_it], 1 \n" /* got it */
" \n"
SCOND_FAIL_RETRY_ASM
: [val] "=&r" (val),
[got_it] "+&r" (got_it)
SCOND_FAIL_RETRY_VARS
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "ir" (__ARCH_RW_LOCK_UNLOCKED__),
[WR_LOCKED] "ir" (0)
: "memory", "cc");
smp_mb();
return got_it;
}
static inline void arch_read_unlock(arch_rwlock_t *rw)
{
unsigned int val;
smp_mb();
/*
* rw->counter++;
*/
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" add %[val], %[val], 1 \n"
" scond %[val], [%[rwlock]] \n"
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [rwlock] "r" (&(rw->counter))
: "memory", "cc");
smp_mb();
}
static inline void arch_write_unlock(arch_rwlock_t *rw)
{
unsigned int val;
smp_mb();
/*
* rw->counter = __ARCH_RW_LOCK_UNLOCKED__;
*/
__asm__ __volatile__(
"1: llock %[val], [%[rwlock]] \n"
" scond %[UNLOCKED], [%[rwlock]]\n"
" bnz 1b \n"
" \n"
: [val] "=&r" (val)
: [rwlock] "r" (&(rw->counter)),
[UNLOCKED] "r" (__ARCH_RW_LOCK_UNLOCKED__)
: "memory", "cc");
smp_mb();
}
#undef SCOND_FAIL_RETRY_VAR_DEF
#undef SCOND_FAIL_RETRY_ASM
#undef SCOND_FAIL_RETRY_VARS
#endif /* CONFIG_ARC_STAR_9000923308 */
#else /* !CONFIG_ARC_HAS_LLSC */
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
unsigned int val = __ARCH_SPIN_LOCK_LOCKED__;
/*
* This smp_mb() is technically superfluous, we only need the one
@ -33,7 +542,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
__asm__ __volatile__(
"1: ex %0, [%1] \n"
" breq %0, %2, 1b \n"
: "+&r" (tmp)
: "+&r" (val)
: "r"(&(lock->slock)), "ir"(__ARCH_SPIN_LOCK_LOCKED__)
: "memory");
@ -48,26 +557,27 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
smp_mb();
}
/* 1 - lock taken successfully */
static inline int arch_spin_trylock(arch_spinlock_t *lock)
{
unsigned int tmp = __ARCH_SPIN_LOCK_LOCKED__;
unsigned int val = __ARCH_SPIN_LOCK_LOCKED__;
smp_mb();
__asm__ __volatile__(
"1: ex %0, [%1] \n"
: "+r" (tmp)
: "+r" (val)
: "r"(&(lock->slock))
: "memory");
smp_mb();
return (tmp == __ARCH_SPIN_LOCK_UNLOCKED__);
return (val == __ARCH_SPIN_LOCK_UNLOCKED__);
}
static inline void arch_spin_unlock(arch_spinlock_t *lock)
{
unsigned int tmp = __ARCH_SPIN_LOCK_UNLOCKED__;
unsigned int val = __ARCH_SPIN_LOCK_UNLOCKED__;
/*
* RELEASE barrier: given the instructions avail on ARCv2, full barrier
@ -77,7 +587,7 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
__asm__ __volatile__(
" ex %0, [%1] \n"
: "+r" (tmp)
: "+r" (val)
: "r"(&(lock->slock))
: "memory");
@ -90,19 +600,12 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
/*
* Read-write spinlocks, allowing multiple readers but only one writer.
* Unfair locking as Writers could be starved indefinitely by Reader(s)
*
* The spinlock itself is contained in @counter and access to it is
* serialized with @lock_mutex.
*
* Unfair locking as Writers could be starved indefinitely by Reader(s)
*/
/* Would read_trylock() succeed? */
#define arch_read_can_lock(x) ((x)->counter > 0)
/* Would write_trylock() succeed? */
#define arch_write_can_lock(x) ((x)->counter == __ARCH_RW_LOCK_UNLOCKED__)
/* 1 - lock taken successfully */
static inline int arch_read_trylock(arch_rwlock_t *rw)
{
@ -173,6 +676,11 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
arch_spin_unlock(&(rw->lock_mutex));
}
#endif
#define arch_read_can_lock(x) ((x)->counter > 0)
#define arch_write_can_lock(x) ((x)->counter == __ARCH_RW_LOCK_UNLOCKED__)
#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)

2
arch/arc/include/asm/spinlock_types.h
View File

@ -26,7 +26,9 @@ typedef struct {
*/
typedef struct {
volatile unsigned int counter;
#ifndef CONFIG_ARC_HAS_LLSC
arch_spinlock_t lock_mutex;
#endif
} arch_rwlock_t;
#define __ARCH_RW_LOCK_UNLOCKED__ 0x01000000

20
arch/arc/include/uapi/asm/ptrace.h
View File

@ -32,20 +32,20 @@
*/
struct user_regs_struct {
long pad;
unsigned long pad;
struct {
long bta, lp_start, lp_end, lp_count;
long status32, ret, blink, fp, gp;
long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
long sp;
unsigned long bta, lp_start, lp_end, lp_count;
unsigned long status32, ret, blink, fp, gp;
unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
unsigned long sp;
} scratch;
long pad2;
unsigned long pad2;
struct {
long r25, r24, r23, r22, r21, r20;
long r19, r18, r17, r16, r15, r14, r13;
unsigned long r25, r24, r23, r22, r21, r20;
unsigned long r19, r18, r17, r16, r15, r14, r13;
} callee;
long efa; /* break pt addr, for break points in delay slots */
long stop_pc; /* give dbg stop_pc after ensuring brkpt trap */
unsigned long efa; /* break pt addr, for break points in delay slots */
unsigned long stop_pc; /* give dbg stop_pc after ensuring brkpt trap */
};
#endif /* !__ASSEMBLY__ */

12
arch/arc/kernel/setup.c
View File

@ -47,6 +47,7 @@ static void read_arc_build_cfg_regs(void)
struct bcr_perip uncached_space;
struct bcr_generic bcr;
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
unsigned long perip_space;
FIX_PTR(cpu);
READ_BCR(AUX_IDENTITY, cpu->core);
@ -56,7 +57,12 @@ static void read_arc_build_cfg_regs(void)
cpu->vec_base = read_aux_reg(AUX_INTR_VEC_BASE);
READ_BCR(ARC_REG_D_UNCACH_BCR, uncached_space);
BUG_ON((uncached_space.start << 24) != ARC_UNCACHED_ADDR_SPACE);
if (uncached_space.ver < 3)
perip_space = uncached_space.start << 24;
else
perip_space = read_aux_reg(AUX_NON_VOL) & 0xF0000000;
BUG_ON(perip_space != ARC_UNCACHED_ADDR_SPACE);
READ_BCR(ARC_REG_MUL_BCR, cpu->extn_mpy);
@ -330,6 +336,10 @@ static void arc_chk_core_config(void)
pr_warn("CONFIG_ARC_FPU_SAVE_RESTORE needed for working apps\n");
else if (!cpu->extn.fpu_dp && fpu_enabled)
panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n");
if (is_isa_arcv2() && IS_ENABLED(CONFIG_SMP) && cpu->isa.atomic &&
!IS_ENABLED(CONFIG_ARC_STAR_9000923308))
panic("llock/scond livelock workaround missing\n");
}
/*

40
arch/arc/kernel/time.c
View File

@ -203,34 +203,24 @@ static int arc_clkevent_set_next_event(unsigned long delta,
return 0;
}
static void arc_clkevent_set_mode(enum clock_event_mode mode,
struct clock_event_device *dev)
static int arc_clkevent_set_periodic(struct clock_event_device *dev)
{
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
/*
* At X Hz, 1 sec = 1000ms -> X cycles;
* 10ms -> X / 100 cycles
*/
arc_timer_event_setup(arc_get_core_freq() / HZ);
break;
case CLOCK_EVT_MODE_ONESHOT:
break;
default:
break;
}
return;
/*
* At X Hz, 1 sec = 1000ms -> X cycles;
* 10ms -> X / 100 cycles
*/
arc_timer_event_setup(arc_get_core_freq() / HZ);
return 0;
}
static DEFINE_PER_CPU(struct clock_event_device, arc_clockevent_device) = {
.name = "ARC Timer0",
.features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
.mode = CLOCK_EVT_MODE_UNUSED,
.rating = 300,
.irq = TIMER0_IRQ, /* hardwired, no need for resources */
.set_next_event = arc_clkevent_set_next_event,
.set_mode = arc_clkevent_set_mode,
.name = "ARC Timer0",
.features = CLOCK_EVT_FEAT_ONESHOT |
CLOCK_EVT_FEAT_PERIODIC,
.rating = 300,
.irq = TIMER0_IRQ, /* hardwired, no need for resources */
.set_next_event = arc_clkevent_set_next_event,
.set_state_periodic = arc_clkevent_set_periodic,
};
static irqreturn_t timer_irq_handler(int irq, void *dev_id)
@ -240,7 +230,7 @@ static irqreturn_t timer_irq_handler(int irq, void *dev_id)
* irq_set_chip_and_handler() asked for handle_percpu_devid_irq()
*/
struct clock_event_device *evt = this_cpu_ptr(&arc_clockevent_device);
int irq_reenable = evt->mode == CLOCK_EVT_MODE_PERIODIC;
int irq_reenable = clockevent_state_periodic(evt);
/*
* Any write to CTRL reg ACks the interrupt, we rewrite the

2
arch/arc/lib/memcpy-archs.S
View File

@ -206,7 +206,7 @@ unalignedOffby3:
ld.ab r6, [r1, 4]
prefetch [r1, 28] ;Prefetch the next read location
ld.ab r8, [r1,4]
prefetch [r3, 32] ;Prefetch the next write location
prefetchw [r3, 32] ;Prefetch the next write location
SHIFT_1 (r7, r6, 8)
or r7, r7, r5

43
arch/arc/lib/memset-archs.S
View File

@ -10,12 +10,6 @@
#undef PREALLOC_NOT_AVAIL
#ifdef PREALLOC_NOT_AVAIL
#define PREWRITE(A,B) prefetchw [(A),(B)]
#else
#define PREWRITE(A,B) prealloc [(A),(B)]
#endif
ENTRY(memset)
prefetchw [r0] ; Prefetch the write location
mov.f 0, r2
@ -51,9 +45,15 @@ ENTRY(memset)
;;; Convert len to Dwords, unfold x8
lsr.f lp_count, lp_count, 6
lpnz @.Lset64bytes
;; LOOP START
PREWRITE(r3, 64) ;Prefetch the next write location
#ifdef PREALLOC_NOT_AVAIL
prefetchw [r3, 64] ;Prefetch the next write location
#else
prealloc [r3, 64]
#endif
#ifdef CONFIG_ARC_HAS_LL64
std.ab r4, [r3, 8]
std.ab r4, [r3, 8]
std.ab r4, [r3, 8]
@ -62,16 +62,45 @@ ENTRY(memset)
std.ab r4, [r3, 8]
std.ab r4, [r3, 8]
std.ab r4, [r3, 8]
#else
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
#endif
.Lset64bytes:
lsr.f lp_count, r2, 5 ;Last remaining max 124 bytes
lpnz .Lset32bytes
;; LOOP START
prefetchw [r3, 32] ;Prefetch the next write location
#ifdef CONFIG_ARC_HAS_LL64
std.ab r4, [r3, 8]
std.ab r4, [r3, 8]
std.ab r4, [r3, 8]
std.ab r4, [r3, 8]
#else
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
st.ab r4, [r3, 4]
#endif
.Lset32bytes:
and.f lp_count, r2, 0x1F ;Last remaining 31 bytes

15
arch/arc/plat-axs10x/axs10x.c
View File

@ -389,6 +389,21 @@ axs103_set_freq(unsigned int id, unsigned int fd, unsigned int od)
static void __init axs103_early_init(void)
{
/*
* AXS103 configurations for SMP/QUAD configurations share device tree
* which defaults to 90 MHz. However recent failures of Quad config
* revealed P&R timing violations so clamp it down to safe 50 MHz
* Instead of duplicating defconfig/DT for SMP/QUAD, add a small hack
*
* This hack is really hacky as of now. Fix it properly by getting the
* number of cores as return value of platform's early SMP callback
*/
#ifdef CONFIG_ARC_MCIP
unsigned int num_cores = (read_aux_reg(ARC_REG_MCIP_BCR) >> 16) & 0x3F;
if (num_cores > 2)
arc_set_core_freq(50 * 1000000);
#endif
switch (arc_get_core_freq()/1000000) {
case 33:
axs103_set_freq(1, 1, 1);

3
arch/arm/boot/dts/dra7.dtsi
View File

@ -116,7 +116,7 @@
ranges = <0 0x2000 0x2000>;
scm_conf: scm_conf@0 {
compatible = "syscon";
compatible = "syscon", "simple-bus";
reg = <0x0 0x1400>;
#address-cells = <1>;
#size-cells = <1>;
@ -1140,6 +1140,7 @@
ctrl-module = <&omap_control_sata>;
clocks = <&sys_clkin1>, <&sata_ref_clk>;
clock-names = "sysclk", "refclk";
syscon-pllreset = <&scm_conf 0x3fc>;
#phy-cells = <0>;
};

2
arch/arm/boot/dts/exynos3250.dtsi
View File

@ -138,8 +138,8 @@
mipi_phy: video-phy@10020710 {
compatible = "samsung,s5pv210-mipi-video-phy";
reg = <0x10020710 8>;
#phy-cells = <1>;
syscon = <&pmu_system_controller>;
};
pd_cam: cam-power-domain@10023C00 {

4
arch/arm/boot/dts/exynos4210-origen.dts
View File

@ -127,6 +127,10 @@
};
};
&cpu0 {
cpu0-supply = <&buck1_reg>;
};
&fimd {
pinctrl-0 = <&lcd_en &lcd_clk &lcd_data24 &pwm0_out>;
pinctrl-names = "default";

4
arch/arm/boot/dts/exynos4210-trats.dts
View File

@ -188,6 +188,10 @@
};
};
&cpu0 {
cpu0-supply = <&varm_breg>;
};
&dsi_0 {
vddcore-supply = <&vusb_reg>;
vddio-supply = <&vmipi_reg>;

4
arch/arm/boot/dts/exynos4210-universal_c210.dts
View File

@ -548,6 +548,10 @@
};
};
&cpu0 {
cpu0-supply = <&vdd_arm_reg>;
};
&pinctrl_1 {
hdmi_hpd: hdmi-hpd {
samsung,pins = "gpx3-7";

12
arch/arm/boot/dts/exynos4210.dtsi
View File

@ -40,6 +40,18 @@
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0x900>;
clocks = <&clock CLK_ARM_CLK>;
clock-names = "cpu";
clock-latency = <160000>;
operating-points = <
1200000 1250000
1000000 1150000
800000 1075000
500000 975000
400000 975000
200000 950000
>;
cooling-min-level = <4>;
cooling-max-level = <2>;
#cooling-cells = <2>; /* min followed by max */

8
arch/arm/boot/dts/imx35.dtsi
View File

@ -286,8 +286,8 @@
can1: can@53fe4000 {
compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
reg = <0x53fe4000 0x1000>;
clocks = <&clks 33>;
clock-names = "ipg";
clocks = <&clks 33>, <&clks 33>;
clock-names = "ipg", "per";
interrupts = <43>;
status = "disabled";
};
@ -295,8 +295,8 @@
can2: can@53fe8000 {
compatible = "fsl,imx35-flexcan", "fsl,p1010-flexcan";
reg = <0x53fe8000 0x1000>;
clocks = <&clks 34>;
clock-names = "ipg";
clocks = <&clks 34>, <&clks 34>;
clock-names = "ipg", "per";
interrupts = <44>;
status = "disabled";
};

8
arch/arm/boot/dts/imx6qdl.dtsi
View File

@ -181,10 +181,10 @@
interrupt-names = "msi";
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0x7>;
interrupt-map = <0 0 0 1 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
<0 0 0 2 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
<0 0 0 3 &intc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
<0 0 0 4 &intc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
interrupt-map = <0 0 0 1 &gpc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
<0 0 0 2 &gpc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
<0 0 0 3 &gpc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
<0 0 0 4 &gpc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6QDL_CLK_PCIE_AXI>,
<&clks IMX6QDL_CLK_LVDS1_GATE>,
<&clks IMX6QDL_CLK_PCIE_REF_125M>;

5
arch/arm/boot/dts/k2e-clocks.dtsi
View File

@ -13,9 +13,8 @@ clocks {
#clock-cells = <0>;
compatible = "ti,keystone,main-pll-clock";
clocks = <&refclksys>;
reg = <0x02620350 4>, <0x02310110 4>;
reg-names = "control", "multiplier";
fixed-postdiv = <2>;
reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
reg-names = "control", "multiplier", "post-divider";
};
papllclk: papllclk@2620358 {

15
arch/arm/boot/dts/k2e.dtsi
View File

@ -131,10 +131,17 @@
<GIC_SPI 376 IRQ_TYPE_EDGE_RISING>;
};
};
mdio: mdio@24200f00 {
compatible = "ti,keystone_mdio", "ti,davinci_mdio";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x24200f00 0x100>;
status = "disabled";
clocks = <&clkcpgmac>;
clock-names = "fck";
bus_freq = <2500000>;
};
/include/ "k2e-netcp.dtsi"
};
};
&mdio {
reg = <0x24200f00 0x100>;
};

5
arch/arm/boot/dts/k2hk-clocks.dtsi
View File

@ -22,9 +22,8 @@ clocks {
#clock-cells = <0>;
compatible = "ti,keystone,main-pll-clock";
clocks = <&refclksys>;
reg = <0x02620350 4>, <0x02310110 4>;
reg-names = "control", "multiplier";
fixed-postdiv = <2>;
reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
reg-names = "control", "multiplier", "post-divider";
};
papllclk: papllclk@2620358 {

11
arch/arm/boot/dts/k2hk.dtsi
View File

@ -98,6 +98,17 @@
#gpio-cells = <2>;
gpio,syscon-dev = <&devctrl 0x25c>;
};
mdio: mdio@02090300 {
compatible = "ti,keystone_mdio", "ti,davinci_mdio";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x02090300 0x100>;
status = "disabled";
clocks = <&clkcpgmac>;
clock-names = "fck";
bus_freq = <2500000>;
};
/include/ "k2hk-netcp.dtsi"
};
};

5
arch/arm/boot/dts/k2l-clocks.dtsi
View File

@ -22,9 +22,8 @@ clocks {
#clock-cells = <0>;
compatible = "ti,keystone,main-pll-clock";
clocks = <&refclksys>;
reg = <0x02620350 4>, <0x02310110 4>;
reg-names = "control", "multiplier";
fixed-postdiv = <2>;
reg = <0x02620350 4>, <0x02310110 4>, <0x02310108 4>;
reg-names = "control", "multiplier", "post-divider";
};
papllclk: papllclk@2620358 {

16
arch/arm/boot/dts/k2l.dtsi
View File

@ -29,7 +29,6 @@
};
soc {
/include/ "k2l-clocks.dtsi"
uart2: serial@02348400 {
@ -79,6 +78,17 @@
#gpio-cells = <2>;
gpio,syscon-dev = <&devctrl 0x24c>;
};
mdio: mdio@26200f00 {
compatible = "ti,keystone_mdio", "ti,davinci_mdio";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x26200f00 0x100>;
status = "disabled";
clocks = <&clkcpgmac>;
clock-names = "fck";
bus_freq = <2500000>;
};
/include/ "k2l-netcp.dtsi"
};
};
@ -96,7 +106,3 @@
/* Pin muxed. Enabled and configured by Bootloader */
status = "disabled";
};
&mdio {
reg = <0x26200f00 0x100>;
};

11
arch/arm/boot/dts/keystone.dtsi
View File

@ -267,17 +267,6 @@
1 0 0x21000A00 0x00000100>;
};
mdio: mdio@02090300 {
compatible = "ti,keystone_mdio", "ti,davinci_mdio";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x02090300 0x100>;
status = "disabled";
clocks = <&clkpa>;
clock-names = "fck";
bus_freq = <2500000>;
};
kirq0: keystone_irq@26202a0 {
compatible = "ti,keystone-irq";
interrupts = <GIC_SPI 4 IRQ_TYPE_EDGE_RISING>;

3
arch/arm/boot/dts/omap2430.dtsi
View File

@ -51,7 +51,8 @@
};
scm_conf: scm_conf@270 {
compatible = "syscon";
compatible = "syscon",
"simple-bus";
reg = <0x270 0x240>;
#address-cells = <1>;
#size-cells = <1>;

3
arch/arm/boot/dts/omap4.dtsi
View File

@ -191,7 +191,8 @@
};
omap4_padconf_global: omap4_padconf_global@5a0 {
compatible = "syscon";
compatible = "syscon",
"simple-bus";
reg = <0x5a0 0x170>;
#address-cells = <1>;
#size-cells = <1>;

3
arch/arm/boot/dts/omap5.dtsi
View File

@ -180,7 +180,8 @@
};
omap5_padconf_global: omap5_padconf_global@5a0 {
compatible = "syscon";
compatible = "syscon",
"simple-bus";
reg = <0x5a0 0xec>;
#address-cells = <1>;
#size-cells = <1>;

53
arch/arm/boot/dts/ste-dbx5x0.dtsi
View File

@ -15,6 +15,33 @@
#include "skeleton.dtsi"
/ {
cpus {
#address-cells = <1>;
#size-cells = <0>;
enable-method = "ste,dbx500-smp";
cpu-map {
cluster0 {
core0 {
cpu = <&CPU0>;
};
core1 {
cpu = <&CPU1>;
};
};
};
CPU0: cpu@300 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0x300>;
};
CPU1: cpu@301 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0x301>;
};
};
soc {
#address-cells = <1>;
#size-cells = <1>;
@ -22,32 +49,6 @@
interrupt-parent = <&intc>;
ranges;
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu-map {
cluster0 {
core0 {
cpu = <&CPU0>;
};
core1 {
cpu = <&CPU1>;
};
};
};
CPU0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0>;
};
CPU1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <1>;
};
};
ptm@801ae000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0x801ae000 0x1000>;

1
arch/arm/boot/dts/ste-nomadik-nhk15.dts
View File

@ -17,6 +17,7 @@
};
aliases {
serial1 = &uart1;
stmpe-i2c0 = &stmpe0;
stmpe-i2c1 = &stmpe1;
};

4
arch/arm/boot/dts/ste-nomadik-s8815.dts
View File

@ -15,6 +15,10 @@
bootargs = "root=/dev/ram0 console=ttyAMA1,115200n8 earlyprintk";
};
aliases {
serial1 = &uart1;
};
src@101e0000 {
/* These chrystal drivers are not used on this board */
disable-sxtalo;

1
arch/arm/boot/dts/ste-nomadik-stn8815.dtsi
View File

@ -757,6 +757,7 @@
clock-names = "uartclk", "apb_pclk";
pinctrl-names = "default";
pinctrl-0 = <&uart0_default_mux>;
status = "disabled";
};
uart1: uart@101fb000 {

1
arch/arm/kernel/entry-common.S
View File

@ -61,6 +61,7 @@ work_pending:
movlt scno, #(__NR_restart_syscall - __NR_SYSCALL_BASE)
ldmia sp, {r0 - r6} @ have to reload r0 - r6
b local_restart @ ... and off we go
ENDPROC(ret_fast_syscall)
/*
* "slow" syscall return path. "why" tells us if this was a real syscall.

3
arch/arm/kernel/head.S
View File

@ -399,6 +399,9 @@ ENTRY(secondary_startup)
sub lr, r4, r5 @ mmu has been enabled
add r3, r7, lr
ldrd r4, [r3, #0] @ get secondary_data.pgdir
ARM_BE8(eor r4, r4, r5) @ Swap r5 and r4 in BE:
ARM_BE8(eor r5, r4, r5) @ it can be done in 3 steps
ARM_BE8(eor r4, r4, r5) @ without using a temp reg.
ldr r8, [r3, #8] @ get secondary_data.swapper_pg_dir
badr lr, __enable_mmu @ return address
mov r13, r12 @ __secondary_switched address

7
arch/arm/kernel/vdso.c
View File

@ -296,7 +296,6 @@ static bool tk_is_cntvct(const struct timekeeper *tk)
*/
void update_vsyscall(struct timekeeper *tk)
{
struct timespec xtime_coarse;
struct timespec64 *wtm = &tk->wall_to_monotonic;
if (!cntvct_ok) {
@ -308,10 +307,10 @@ void update_vsyscall(struct timekeeper *tk)
vdso_write_begin(vdso_data);
xtime_coarse = __current_kernel_time();
vdso_data->tk_is_cntvct = tk_is_cntvct(tk);
vdso_data->xtime_coarse_sec = xtime_coarse.tv_sec;
vdso_data->xtime_coarse_nsec = xtime_coarse.tv_nsec;
vdso_data->xtime_coarse_sec = tk->xtime_sec;
vdso_data->xtime_coarse_nsec = (u32)(tk->tkr_mono.xtime_nsec >>
tk->tkr_mono.shift);
vdso_data->wtm_clock_sec = wtm->tv_sec;
vdso_data->wtm_clock_nsec = wtm->tv_nsec;

3
arch/arm/mach-exynos/pm_domains.c
View File

@ -146,9 +146,8 @@ static __init int exynos4_pm_init_power_domain(void)
pd->base = of_iomap(np, 0);
if (!pd->base) {
pr_warn("%s: failed to map memory\n", __func__);
kfree(pd->pd.name);
kfree_const(pd->pd.name);
kfree(pd);
of_node_put(np);
continue;
}

24
arch/arm/mach-omap2/omap_hwmod.c
View File

@ -2373,6 +2373,9 @@ static int of_dev_hwmod_lookup(struct device_node *np,
* registers. This address is needed early so the OCP registers that
* are part of the device's address space can be ioremapped properly.
*
* If SYSC access is not needed, the registers will not be remapped
* and non-availability of MPU access is not treated as an error.
*
* Returns 0 on success, -EINVAL if an invalid hwmod is passed, and
* -ENXIO on absent or invalid register target address space.
*/
@ -2387,6 +2390,11 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
_save_mpu_port_index(oh);
/* if we don't need sysc access we don't need to ioremap */
if (!oh->class->sysc)
return 0;
/* we can't continue without MPU PORT if we need sysc access */
if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
return -ENXIO;
@ -2396,8 +2404,10 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
oh->name);
/* Extract the IO space from device tree blob */
if (!np)
if (!np) {
pr_err("omap_hwmod: %s: no dt node\n", oh->name);
return -ENXIO;
}
va_start = of_iomap(np, index + oh->mpu_rt_idx);
} else {
@ -2456,13 +2466,11 @@ static int __init _init(struct omap_hwmod *oh, void *data)
oh->name, np->name);
}
if (oh->class->sysc) {
r = _init_mpu_rt_base(oh, NULL, index, np);
if (r < 0) {
WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
oh->name);
return 0;
}
r = _init_mpu_rt_base(oh, NULL, index, np);
if (r < 0) {
WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
oh->name);
return 0;
}
r = _init_clocks(oh, NULL);

5
arch/arm/mach-omap2/omap_hwmod_7xx_data.c
View File

@ -827,8 +827,7 @@ static struct omap_hwmod_class_sysconfig dra7xx_gpmc_sysc = {
.syss_offs = 0x0014,
.sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_SIDLEMODE |
SYSC_HAS_SOFTRESET | SYSS_HAS_RESET_STATUS),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
SIDLE_SMART_WKUP),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
.sysc_fields = &omap_hwmod_sysc_type1,
};
@ -844,7 +843,7 @@ static struct omap_hwmod dra7xx_gpmc_hwmod = {
.class = &dra7xx_gpmc_hwmod_class,
.clkdm_name = "l3main1_clkdm",
/* Skip reset for CONFIG_OMAP_GPMC_DEBUG for bootloader timings */
.flags = HWMOD_SWSUP_SIDLE | DEBUG_OMAP_GPMC_HWMOD_FLAGS,
.flags = DEBUG_OMAP_GPMC_HWMOD_FLAGS,
.main_clk = "l3_iclk_div",
.prcm = {
.omap4 = {

2
arch/arm/vdso/Makefile
View File

@ -14,7 +14,7 @@ VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
VDSO_LDFLAGS += -nostdlib -shared
VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--build-id)
VDSO_LDFLAGS += $(call cc-option, -fuse-ld=bfd)
VDSO_LDFLAGS += $(call cc-ldoption, -fuse-ld=bfd)
obj-$(CONFIG_VDSO) += vdso.o
extra-$(CONFIG_VDSO) += vdso.lds

2
arch/arm64/boot/dts/apm/apm-storm.dtsi
View File

@ -823,7 +823,7 @@
device_type = "dma";
reg = <0x0 0x1f270000 0x0 0x10000>,
<0x0 0x1f200000 0x0 0x10000>,
<0x0 0x1b008000 0x0 0x2000>,
<0x0 0x1b000000 0x0 0x400000>,
<0x0 0x1054a000 0x0 0x100>;
interrupts = <0x0 0x82 0x4>,
<0x0 0xb8 0x4>,

4
arch/arm64/kernel/efi.c
View File

@ -122,12 +122,12 @@ static int __init uefi_init(void)
/* Show what we know for posterity */
c16 = early_memremap(efi_to_phys(efi.systab->fw_vendor),
sizeof(vendor));
sizeof(vendor) * sizeof(efi_char16_t));
if (c16) {
for (i = 0; i < (int) sizeof(vendor) - 1 && *c16; ++i)
vendor[i] = c16[i];
vendor[i] = '\0';
early_memunmap(c16, sizeof(vendor));
early_memunmap(c16, sizeof(vendor) * sizeof(efi_char16_t));
}
pr_info("EFI v%u.%.02u by %s\n",

5
arch/arm64/kernel/signal32.c
View File

@ -168,7 +168,8 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
* Other callers might not initialize the si_lsb field,
* so check explicitely for the right codes here.
*/
if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)
if (from->si_signo == SIGBUS &&
(from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO))
err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
#endif
break;
@ -201,8 +202,6 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
{
memset(to, 0, sizeof *to);
if (copy_from_user(to, from, __ARCH_SI_PREAMBLE_SIZE) ||
copy_from_user(to->_sifields._pad,
from->_sifields._pad, SI_PAD_SIZE))

7
arch/arm64/kernel/vdso.c
View File

@ -199,16 +199,15 @@ up_fail:
*/
void update_vsyscall(struct timekeeper *tk)
{
struct timespec xtime_coarse;
u32 use_syscall = strcmp(tk->tkr_mono.clock->name, "arch_sys_counter");
++vdso_data->tb_seq_count;
smp_wmb();
xtime_coarse = __current_kernel_time();
vdso_data->use_syscall = use_syscall;
vdso_data->xtime_coarse_sec = xtime_coarse.tv_sec;
vdso_data->xtime_coarse_nsec = xtime_coarse.tv_nsec;
vdso_data->xtime_coarse_sec = tk->xtime_sec;
vdso_data->xtime_coarse_nsec = tk->tkr_mono.xtime_nsec >>
tk->tkr_mono.shift;
vdso_data->wtm_clock_sec = tk->wall_to_monotonic.tv_sec;
vdso_data->wtm_clock_nsec = tk->wall_to_monotonic.tv_nsec;

20
arch/avr32/mach-at32ap/clock.c
View File

@ -80,6 +80,9 @@ int clk_enable(struct clk *clk)
{
unsigned long flags;
if (!clk)
return 0;
spin_lock_irqsave(&clk_lock, flags);
__clk_enable(clk);
spin_unlock_irqrestore(&clk_lock, flags);
@ -106,6 +109,9 @@ void clk_disable(struct clk *clk)
{
unsigned long flags;
if (IS_ERR_OR_NULL(clk))
return;
spin_lock_irqsave(&clk_lock, flags);
__clk_disable(clk);
spin_unlock_irqrestore(&clk_lock, flags);
@ -117,6 +123,9 @@ unsigned long clk_get_rate(struct clk *clk)
unsigned long flags;
unsigned long rate;
if (!clk)
return 0;
spin_lock_irqsave(&clk_lock, flags);
rate = clk->get_rate(clk);
spin_unlock_irqrestore(&clk_lock, flags);
@ -129,6 +138,9 @@ long clk_round_rate(struct clk *clk, unsigned long rate)
{
unsigned long flags, actual_rate;
if (!clk)
return 0;
if (!clk->set_rate)
return -ENOSYS;
@ -145,6 +157,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
unsigned long flags;
long ret;
if (!clk)
return 0;
if (!clk->set_rate)
return -ENOSYS;
@ -161,6 +176,9 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
unsigned long flags;
int ret;
if (!clk)
return 0;
if (!clk->set_parent)
return -ENOSYS;
@ -174,7 +192,7 @@ EXPORT_SYMBOL(clk_set_parent);
struct clk *clk_get_parent(struct clk *clk)
{
return clk->parent;
return !clk ? NULL : clk->parent;
}
EXPORT_SYMBOL(clk_get_parent);

1
arch/mips/Kconfig
View File

@ -151,7 +151,6 @@ config BMIPS_GENERIC
select BCM7120_L2_IRQ
select BRCMSTB_L2_IRQ
select IRQ_MIPS_CPU
select RAW_IRQ_ACCESSORS
select DMA_NONCOHERENT
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN

1
arch/mips/ath79/setup.c
View File

@ -190,6 +190,7 @@ int get_c0_perfcount_int(void)
{
return ATH79_MISC_IRQ(5);
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
unsigned int get_c0_compare_int(void)
{

2
arch/mips/cavium-octeon/smp.c
View File

@ -42,7 +42,7 @@ static irqreturn_t mailbox_interrupt(int irq, void *dev_id)
cvmx_write_csr(CVMX_CIU_MBOX_CLRX(coreid), action);
if (action & SMP_CALL_FUNCTION)
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
if (action & SMP_RESCHEDULE_YOURSELF)
scheduler_ipi();

10
arch/mips/include/asm/mach-bcm63xx/dma-coherence.h
View File

@ -1,10 +0,0 @@
#ifndef __ASM_MACH_BCM63XX_DMA_COHERENCE_H
#define __ASM_MACH_BCM63XX_DMA_COHERENCE_H
#include <asm/bmips.h>
#define plat_post_dma_flush bmips_post_dma_flush
#include <asm/mach-generic/dma-coherence.h>
#endif /* __ASM_MACH_BCM63XX_DMA_COHERENCE_H */

31
arch/mips/include/asm/pgtable.h
View File

@ -182,8 +182,39 @@ static inline void set_pte(pte_t *ptep, pte_t pteval)
* Make sure the buddy is global too (if it's !none,
* it better already be global)
*/
#ifdef CONFIG_SMP
/*
* For SMP, multiple CPUs can race, so we need to do
* this atomically.
*/
#ifdef CONFIG_64BIT
#define LL_INSN "lld"
#define SC_INSN "scd"
#else /* CONFIG_32BIT */
#define LL_INSN "ll"
#define SC_INSN "sc"
#endif
unsigned long page_global = _PAGE_GLOBAL;
unsigned long tmp;
__asm__ __volatile__ (
" .set push\n"
" .set noreorder\n"
"1: " LL_INSN " %[tmp], %[buddy]\n"
" bnez %[tmp], 2f\n"
" or %[tmp], %[tmp], %[global]\n"
" " SC_INSN " %[tmp], %[buddy]\n"
" beqz %[tmp], 1b\n"
" nop\n"
"2:\n"
" .set pop"
: [buddy] "+m" (buddy->pte),
[tmp] "=&r" (tmp)
: [global] "r" (page_global));
#else /* !CONFIG_SMP */
if (pte_none(*buddy))
pte_val(*buddy) = pte_val(*buddy) | _PAGE_GLOBAL;
#endif /* CONFIG_SMP */
}
#endif
}

2
arch/mips/include/asm/smp.h
View File

@ -83,8 +83,6 @@ static inline void __cpu_die(unsigned int cpu)
extern void play_dead(void);
#endif
extern asmlinkage void smp_call_function_interrupt(void);
static inline void arch_send_call_function_single_ipi(int cpu)
{
extern struct plat_smp_ops *mp_ops; /* private */

25
arch/mips/include/asm/stackframe.h
View File

@ -152,6 +152,31 @@
.set noreorder
bltz k0, 8f
move k1, sp
#ifdef CONFIG_EVA
/*
* Flush interAptiv's Return Prediction Stack (RPS) by writing
* EntryHi. Toggling Config7.RPS is slower and less portable.
*
* The RPS isn't automatically flushed when exceptions are
* taken, which can result in kernel mode speculative accesses
* to user addresses if the RPS mispredicts. That's harmless
* when user and kernel share the same address space, but with
* EVA the same user segments may be unmapped to kernel mode,
* even containing sensitive MMIO regions or invalid memory.
*
* This can happen when the kernel sets the return address to
* ret_from_* and jr's to the exception handler, which looks
* more like a tail call than a function call. If nested calls
* don't evict the last user address in the RPS, it will
* mispredict the return and fetch from a user controlled
* address into the icache.
*
* More recent EVA-capable cores with MAAR to restrict
* speculative accesses aren't affected.
*/
MFC0 k0, CP0_ENTRYHI
MTC0 k0, CP0_ENTRYHI
#endif
.set reorder
/* Called from user mode, new stack. */
get_saved_sp

5
arch/mips/kernel/mips-mt-fpaff.c
View File

@ -154,7 +154,7 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len,
unsigned long __user *user_mask_ptr)
{
unsigned int real_len;
cpumask_t mask;
cpumask_t allowed, mask;
int retval;
struct task_struct *p;
@ -173,7 +173,8 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len,
if (retval)
goto out_unlock;
cpumask_and(&mask, &p->thread.user_cpus_allowed, cpu_possible_mask);
cpumask_or(&allowed, &p->thread.user_cpus_allowed, &p->cpus_allowed);
cpumask_and(&mask, &allowed, cpu_active_mask);
out_unlock:
read_unlock(&tasklist_lock);

2
arch/mips/kernel/prom.c
View File

@ -38,7 +38,7 @@ char *mips_get_machine_name(void)
return mips_machine_name;
}
#ifdef CONFIG_OF
#ifdef CONFIG_USE_OF
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
return add_memory_region(base, size, BOOT_MEM_RAM);

8
arch/mips/kernel/relocate_kernel.S
View File

@ -24,7 +24,7 @@ LEAF(relocate_new_kernel)
process_entry:
PTR_L s2, (s0)
PTR_ADD s0, s0, SZREG
PTR_ADDIU s0, s0, SZREG
/*
* In case of a kdump/crash kernel, the indirection page is not
@ -61,9 +61,9 @@ copy_word:
/* copy page word by word */
REG_L s5, (s2)
REG_S s5, (s4)
PTR_ADD s4, s4, SZREG
PTR_ADD s2, s2, SZREG
LONG_SUB s6, s6, 1
PTR_ADDIU s4, s4, SZREG
PTR_ADDIU s2, s2, SZREG
LONG_ADDIU s6, s6, -1
beq s6, zero, process_entry
b copy_word
b process_entry

2
arch/mips/kernel/scall64-64.S
View File

@ -80,7 +80,7 @@ syscall_trace_entry:
SAVE_STATIC
move s0, t2
move a0, sp
daddiu a1, v0, __NR_64_Linux
move a1, v0
jal syscall_trace_enter
bltz v0, 2f # seccomp failed? Skip syscall

2
arch/mips/kernel/scall64-n32.S
View File

@ -72,7 +72,7 @@ n32_syscall_trace_entry:
SAVE_STATIC
move s0, t2
move a0, sp
daddiu a1, v0, __NR_N32_Linux
move a1, v0
jal syscall_trace_enter
bltz v0, 2f # seccomp failed? Skip syscall

2
arch/mips/kernel/signal32.c
View File

@ -409,8 +409,6 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
{
memset(to, 0, sizeof *to);
if (copy_from_user(to, from, 3*sizeof(int)) ||
copy_from_user(to->_sifields._pad,
from->_sifields._pad, SI_PAD_SIZE32))

4
arch/mips/kernel/smp-bmips.c
View File

@ -284,7 +284,7 @@ static irqreturn_t bmips5000_ipi_interrupt(int irq, void *dev_id)
if (action == 0)
scheduler_ipi();
else
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
return IRQ_HANDLED;
}
@ -336,7 +336,7 @@ static irqreturn_t bmips43xx_ipi_interrupt(int irq, void *dev_id)
if (action & SMP_RESCHEDULE_YOURSELF)
scheduler_ipi();
if (action & SMP_CALL_FUNCTION)
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
return IRQ_HANDLED;
}

10
arch/mips/kernel/smp.c
View File

@ -192,16 +192,6 @@ asmlinkage void start_secondary(void)
cpu_startup_entry(CPUHP_ONLINE);
}
/*
* Call into both interrupt handlers, as we share the IPI for them
*/
void __irq_entry smp_call_function_interrupt(void)
{
irq_enter();
generic_smp_call_function_interrupt();
irq_exit();
}
static void stop_this_cpu(void *dummy)
{
/*

13
arch/mips/kernel/traps.c
View File

@ -192,6 +192,7 @@ static void show_stacktrace(struct task_struct *task,
void show_stack(struct task_struct *task, unsigned long *sp)
{
struct pt_regs regs;
mm_segment_t old_fs = get_fs();
if (sp) {
regs.regs[29] = (unsigned long)sp;
regs.regs[31] = 0;
@ -210,7 +211,13 @@ void show_stack(struct task_struct *task, unsigned long *sp)
prepare_frametrace(&regs);
}
}
/*
* show_stack() deals exclusively with kernel mode, so be sure to access
* the stack in the kernel (not user) address space.
*/
set_fs(KERNEL_DS);
show_stacktrace(task, &regs);
set_fs(old_fs);
}
static void show_code(unsigned int __user *pc)
@ -1519,6 +1526,7 @@ asmlinkage void do_mcheck(struct pt_regs *regs)
const int field = 2 * sizeof(unsigned long);
int multi_match = regs->cp0_status & ST0_TS;
enum ctx_state prev_state;
mm_segment_t old_fs = get_fs();
prev_state = exception_enter();
show_regs(regs);
@ -1540,8 +1548,13 @@ asmlinkage void do_mcheck(struct pt_regs *regs)
dump_tlb_all();
}
if (!user_mode(regs))
set_fs(KERNEL_DS);
show_code((unsigned int __user *) regs->cp0_epc);
set_fs(old_fs);
/*
* Some chips may have other causes of machine check (e.g. SB1
* graduation timer)

2
arch/mips/kernel/unaligned.c
View File

@ -438,7 +438,7 @@ do { \
: "memory"); \
} while(0)
#define StoreDW(addr, value, res) \
#define _StoreDW(addr, value, res) \
do { \
__asm__ __volatile__ ( \
".set\tpush\n\t" \

3
arch/mips/lantiq/irq.c
View File

@ -293,7 +293,7 @@ static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
{
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
return IRQ_HANDLED;
}
@ -466,6 +466,7 @@ int get_c0_perfcount_int(void)
{
return ltq_perfcount_irq;
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
unsigned int get_c0_compare_int(void)
{

7
arch/mips/loongson64/loongson-3/smp.c
View File

@ -266,8 +266,11 @@ void loongson3_ipi_interrupt(struct pt_regs *regs)
if (action & SMP_RESCHEDULE_YOURSELF)
scheduler_ipi();
if (action & SMP_CALL_FUNCTION)
smp_call_function_interrupt();
if (action & SMP_CALL_FUNCTION) {
irq_enter();
generic_smp_call_function_interrupt();
irq_exit();
}
if (action & SMP_ASK_C0COUNT) {
BUG_ON(cpu != 0);

8
arch/mips/mm/cache.c
View File

@ -160,18 +160,18 @@ static inline void setup_protection_map(void)
protection_map[1] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_EXEC);
protection_map[2] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
protection_map[3] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_EXEC);
protection_map[4] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_READ);
protection_map[4] = __pgprot(_page_cachable_default | _PAGE_PRESENT);
protection_map[5] = __pgprot(_page_cachable_default | _PAGE_PRESENT);
protection_map[6] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_READ);
protection_map[6] = __pgprot(_page_cachable_default | _PAGE_PRESENT);
protection_map[7] = __pgprot(_page_cachable_default | _PAGE_PRESENT);
protection_map[8] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
protection_map[9] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_EXEC);
protection_map[10] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE | _PAGE_NO_READ);
protection_map[11] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_WRITE);
protection_map[12] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_NO_READ);
protection_map[12] = __pgprot(_page_cachable_default | _PAGE_PRESENT);
protection_map[13] = __pgprot(_page_cachable_default | _PAGE_PRESENT);
protection_map[14] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_WRITE | _PAGE_NO_READ);
protection_map[14] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_WRITE);
protection_map[15] = __pgprot(_page_cachable_default | _PAGE_PRESENT | _PAGE_WRITE);
} else {

3
arch/mips/mm/fault.c
View File

@ -133,7 +133,8 @@ good_area:
#endif
goto bad_area;
}
if (!(vma->vm_flags & VM_READ)) {
if (!(vma->vm_flags & VM_READ) &&
exception_epc(regs) != address) {
#if 0
pr_notice("Cpu%d[%s:%d:%0*lx:%ld:%0*lx] RI violation\n",
raw_smp_processor_id(),

2
arch/mips/mti-malta/malta-int.c
View File

@ -222,7 +222,7 @@ static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
{
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
return IRQ_HANDLED;
}

16
arch/mips/mti-malta/malta-time.c
View File

@ -154,6 +154,7 @@ int get_c0_perfcount_int(void)
return mips_cpu_perf_irq;
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
unsigned int get_c0_compare_int(void)
{
@ -171,14 +172,17 @@ unsigned int get_c0_compare_int(void)
static void __init init_rtc(void)
{
/* stop the clock whilst setting it up */
CMOS_WRITE(RTC_SET | RTC_24H, RTC_CONTROL);
unsigned char freq, ctrl;
/* 32KHz time base */
CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT);
/* Set 32KHz time base if not already set */
freq = CMOS_READ(RTC_FREQ_SELECT);
if ((freq & RTC_DIV_CTL) != RTC_REF_CLCK_32KHZ)
CMOS_WRITE(RTC_REF_CLCK_32KHZ, RTC_FREQ_SELECT);
/* start the clock */
CMOS_WRITE(RTC_24H, RTC_CONTROL);
/* Ensure SET bit is clear so RTC can run */
ctrl = CMOS_READ(RTC_CONTROL);
if (ctrl & RTC_SET)
CMOS_WRITE(ctrl & ~RTC_SET, RTC_CONTROL);
}
void __init plat_time_init(void)

1
arch/mips/mti-sead3/sead3-time.c
View File

@ -77,6 +77,7 @@ int get_c0_perfcount_int(void)
return MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
return -1;
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
unsigned int get_c0_compare_int(void)
{

2
arch/mips/netlogic/common/smp.c
View File

@ -86,7 +86,7 @@ void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc)
{
clear_c0_eimr(irq);
ack_c0_eirr(irq);
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
set_c0_eimr(irq);
}

2
arch/mips/paravirt/paravirt-smp.c
View File

@ -114,7 +114,7 @@ static irqreturn_t paravirt_reched_interrupt(int irq, void *dev_id)
static irqreturn_t paravirt_function_interrupt(int irq, void *dev_id)
{
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
return IRQ_HANDLED;
}

1
arch/mips/pistachio/time.c
View File

@ -26,6 +26,7 @@ int get_c0_perfcount_int(void)
{
return gic_get_c0_perfcount_int();
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
int get_c0_fdc_int(void)
{

2
arch/mips/pmcs-msp71xx/msp_smp.c
View File

@ -44,7 +44,7 @@ static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
{
smp_call_function_interrupt();
generic_smp_call_function_interrupt();
return IRQ_HANDLED;
}

1
arch/mips/ralink/irq.c
View File

@ -89,6 +89,7 @@ int get_c0_perfcount_int(void)
{
return rt_perfcount_irq;
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
unsigned int get_c0_compare_int(void)
{

8
arch/mips/sgi-ip27/ip27-irq.c
View File

@ -107,10 +107,14 @@ static void ip27_do_irq_mask0(void)
scheduler_ipi();
} else if (pend0 & (1UL << CPU_CALL_A_IRQ)) {
LOCAL_HUB_CLR_INTR(CPU_CALL_A_IRQ);
smp_call_function_interrupt();
irq_enter();
generic_smp_call_function_interrupt();
irq_exit();
} else if (pend0 & (1UL << CPU_CALL_B_IRQ)) {
LOCAL_HUB_CLR_INTR(CPU_CALL_B_IRQ);
smp_call_function_interrupt();
irq_enter();
generic_smp_call_function_interrupt();
irq_exit();
} else
#endif
{

9
arch/mips/sibyte/bcm1480/smp.c
View File

@ -29,8 +29,6 @@
#include <asm/sibyte/bcm1480_regs.h>
#include <asm/sibyte/bcm1480_int.h>
extern void smp_call_function_interrupt(void);
/*
* These are routines for dealing with the bcm1480 smp capabilities
* independent of board/firmware
@ -184,6 +182,9 @@ void bcm1480_mailbox_interrupt(void)
if (action & SMP_RESCHEDULE_YOURSELF)
scheduler_ipi();
if (action & SMP_CALL_FUNCTION)
smp_call_function_interrupt();
if (action & SMP_CALL_FUNCTION) {
irq_enter();
generic_smp_call_function_interrupt();
irq_exit();
}
}

7
arch/mips/sibyte/sb1250/smp.c
View File

@ -172,6 +172,9 @@ void sb1250_mailbox_interrupt(void)
if (action & SMP_RESCHEDULE_YOURSELF)
scheduler_ipi();
if (action & SMP_CALL_FUNCTION)
smp_call_function_interrupt();
if (action & SMP_CALL_FUNCTION) {
irq_enter();
generic_smp_call_function_interrupt();
irq_exit();
}
}

2
arch/powerpc/kernel/signal_32.c
View File

@ -966,8 +966,6 @@ int copy_siginfo_to_user32(struct compat_siginfo __user *d, const siginfo_t *s)
int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from)
{
memset(to, 0, sizeof *to);
if (copy_from_user(to, from, 3*sizeof(int)) ||
copy_from_user(to->_sifields._pad,
from->_sifields._pad, SI_PAD_SIZE32))

2
arch/powerpc/platforms/powernv/eeh-powernv.c
View File

@ -1478,7 +1478,7 @@ static int pnv_eeh_next_error(struct eeh_pe **pe)
}
/* Unmask the event */
if (eeh_enabled())
if (ret == EEH_NEXT_ERR_NONE && eeh_enabled())
enable_irq(eeh_event_irq);
return ret;

11
arch/powerpc/platforms/powernv/pci-ioda.c
View File

@ -2220,7 +2220,7 @@ static void pnv_pci_ioda_setup_opal_tce_kill(struct pnv_phb *phb)
static __be64 *pnv_pci_ioda2_table_do_alloc_pages(int nid, unsigned shift,
unsigned levels, unsigned long limit,
unsigned long *current_offset)
unsigned long *current_offset, unsigned long *total_allocated)
{
struct page *tce_mem = NULL;
__be64 *addr, *tmp;
@ -2236,6 +2236,7 @@ static __be64 *pnv_pci_ioda2_table_do_alloc_pages(int nid, unsigned shift,
}
addr = page_address(tce_mem);
memset(addr, 0, allocated);
*total_allocated += allocated;
--levels;
if (!levels) {
@ -2245,7 +2246,7 @@ static __be64 *pnv_pci_ioda2_table_do_alloc_pages(int nid, unsigned shift,
for (i = 0; i < entries; ++i) {
tmp = pnv_pci_ioda2_table_do_alloc_pages(nid, shift,
levels, limit, current_offset);
levels, limit, current_offset, total_allocated);
if (!tmp)
break;
@ -2267,7 +2268,7 @@ static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset,
struct iommu_table *tbl)
{
void *addr;
unsigned long offset = 0, level_shift;
unsigned long offset = 0, level_shift, total_allocated = 0;
const unsigned window_shift = ilog2(window_size);
unsigned entries_shift = window_shift - page_shift;
unsigned table_shift = max_t(unsigned, entries_shift + 3, PAGE_SHIFT);
@ -2286,7 +2287,7 @@ static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset,
/* Allocate TCE table */
addr = pnv_pci_ioda2_table_do_alloc_pages(nid, level_shift,
levels, tce_table_size, &offset);
levels, tce_table_size, &offset, &total_allocated);
/* addr==NULL means that the first level allocation failed */
if (!addr)
@ -2308,7 +2309,7 @@ static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset,
page_shift);
tbl->it_level_size = 1ULL << (level_shift - 3);
tbl->it_indirect_levels = levels - 1;
tbl->it_allocated_size = offset;
tbl->it_allocated_size = total_allocated;
pr_devel("Created TCE table: ws=%08llx ts=%lx @%08llx\n",
window_size, tce_table_size, bus_offset);

2
arch/s390/kernel/cache.c
View File

@ -138,6 +138,8 @@ int init_cache_level(unsigned int cpu)
union cache_topology ct;
enum cache_type ctype;
if (!test_facility(34))
return -EOPNOTSUPP;
if (!this_cpu_ci)
return -EINVAL;
ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);

4
arch/s390/kvm/kvm-s390.c
View File

@ -1742,10 +1742,10 @@ static bool ibs_enabled(struct kvm_vcpu *vcpu)
static int kvm_s390_handle_requests(struct kvm_vcpu *vcpu)
{
if (!vcpu->requests)
return 0;
retry:
kvm_s390_vcpu_request_handled(vcpu);
if (!vcpu->requests)
return 0;
/*
* We use MMU_RELOAD just to re-arm the ipte notifier for the
* guest prefix page. gmap_ipte_notify will wait on the ptl lock.

14
arch/s390/net/bpf_jit_comp.c
View File

@ -448,13 +448,13 @@ static void bpf_jit_prologue(struct bpf_jit *jit)
EMIT6_DISP_LH(0xe3000000, 0x0004, REG_SKB_DATA, REG_0,
BPF_REG_1, offsetof(struct sk_buff, data));
}
/* BPF compatibility: clear A (%b7) and X (%b8) registers */
if (REG_SEEN(BPF_REG_7))
/* lghi %b7,0 */
EMIT4_IMM(0xa7090000, BPF_REG_7, 0);
if (REG_SEEN(BPF_REG_8))
/* lghi %b8,0 */
EMIT4_IMM(0xa7090000, BPF_REG_8, 0);
/* BPF compatibility: clear A (%b0) and X (%b7) registers */
if (REG_SEEN(BPF_REG_A))
/* lghi %ba,0 */
EMIT4_IMM(0xa7090000, BPF_REG_A, 0);
if (REG_SEEN(BPF_REG_X))
/* lghi %bx,0 */
EMIT4_IMM(0xa7090000, BPF_REG_X, 0);
}
/*

16
arch/sparc/include/asm/visasm.h
View File

@ -28,16 +28,10 @@
* Must preserve %o5 between VISEntryHalf and VISExitHalf */
#define VISEntryHalf \
rd %fprs, %o5; \
andcc %o5, FPRS_FEF, %g0; \
be,pt %icc, 297f; \
sethi %hi(298f), %g7; \
sethi %hi(VISenterhalf), %g1; \
jmpl %g1 + %lo(VISenterhalf), %g0; \
or %g7, %lo(298f), %g7; \
clr %o5; \
297: wr %o5, FPRS_FEF, %fprs; \
298:
VISEntry
#define VISExitHalf \
VISExit
#define VISEntryHalfFast(fail_label) \
rd %fprs, %o5; \
@ -47,7 +41,7 @@
ba,a,pt %xcc, fail_label; \
297: wr %o5, FPRS_FEF, %fprs;
#define VISExitHalf \
#define VISExitHalfFast \
wr %o5, 0, %fprs;
#ifndef __ASSEMBLY__

5
arch/sparc/lib/NG4memcpy.S
View File

@ -240,8 +240,11 @@ FUNC_NAME: /* %o0=dst, %o1=src, %o2=len */
add %o0, 0x40, %o0
bne,pt %icc, 1b
LOAD(prefetch, %g1 + 0x200, #n_reads_strong)
#ifdef NON_USER_COPY
VISExitHalfFast
#else
VISExitHalf
#endif
brz,pn %o2, .Lexit
cmp %o2, 19
ble,pn %icc, .Lsmall_unaligned

67
arch/sparc/lib/VISsave.S
View File

@ -44,9 +44,8 @@ vis1: ldub [%g6 + TI_FPSAVED], %g3
stx %g3, [%g6 + TI_GSR]
2: add %g6, %g1, %g3
cmp %o5, FPRS_DU
be,pn %icc, 6f
sll %g1, 3, %g1
mov FPRS_DU | FPRS_DL | FPRS_FEF, %o5
sll %g1, 3, %g1
stb %o5, [%g3 + TI_FPSAVED]
rd %gsr, %g2
add %g6, %g1, %g3
@ -80,65 +79,3 @@ vis1: ldub [%g6 + TI_FPSAVED], %g3
.align 32
80: jmpl %g7 + %g0, %g0
nop
6: ldub [%g3 + TI_FPSAVED], %o5
or %o5, FPRS_DU, %o5
add %g6, TI_FPREGS+0x80, %g2
stb %o5, [%g3 + TI_FPSAVED]
sll %g1, 5, %g1
add %g6, TI_FPREGS+0xc0, %g3
wr %g0, FPRS_FEF, %fprs
membar #Sync
stda %f32, [%g2 + %g1] ASI_BLK_P
stda %f48, [%g3 + %g1] ASI_BLK_P
membar #Sync
ba,pt %xcc, 80f
nop
.align 32
80: jmpl %g7 + %g0, %g0
nop
.align 32
VISenterhalf:
ldub [%g6 + TI_FPDEPTH], %g1
brnz,a,pn %g1, 1f
cmp %g1, 1
stb %g0, [%g6 + TI_FPSAVED]
stx %fsr, [%g6 + TI_XFSR]
clr %o5
jmpl %g7 + %g0, %g0
wr %g0, FPRS_FEF, %fprs
1: bne,pn %icc, 2f
srl %g1, 1, %g1
ba,pt %xcc, vis1
sub %g7, 8, %g7
2: addcc %g6, %g1, %g3
sll %g1, 3, %g1
andn %o5, FPRS_DU, %g2
stb %g2, [%g3 + TI_FPSAVED]
rd %gsr, %g2
add %g6, %g1, %g3
stx %g2, [%g3 + TI_GSR]
add %g6, %g1, %g2
stx %fsr, [%g2 + TI_XFSR]
sll %g1, 5, %g1
3: andcc %o5, FPRS_DL, %g0
be,pn %icc, 4f
add %g6, TI_FPREGS, %g2
add %g6, TI_FPREGS+0x40, %g3
membar #Sync
stda %f0, [%g2 + %g1] ASI_BLK_P
stda %f16, [%g3 + %g1] ASI_BLK_P
membar #Sync
ba,pt %xcc, 4f
nop
.align 32
4: and %o5, FPRS_DU, %o5
jmpl %g7 + %g0, %g0
wr %o5, FPRS_FEF, %fprs

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