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Merge 4.13-rc7 into char-misc-next

Browse Source 
We want the binder fix in here as well for testing and merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2017-08-28 10:19:01 +02:00
commit 9749c37275
407 changed files with 2975 additions and 1440 deletions
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4
Documentation/networking/switchdev.txt
View File

@ -228,7 +228,7 @@ Learning on the device port should be enabled, as well as learning_sync:
bridge link set dev DEV learning on self
bridge link set dev DEV learning_sync on self
Learning_sync attribute enables syncing of the learned/forgotton FDB entry to
Learning_sync attribute enables syncing of the learned/forgotten FDB entry to
the bridge's FDB. It's possible, but not optimal, to enable learning on the
device port and on the bridge port, and disable learning_sync.
@ -245,7 +245,7 @@ the responsibility of the port driver/device to age out these entries. If the
port device supports ageing, when the FDB entry expires, it will notify the
driver which in turn will notify the bridge with SWITCHDEV_FDB_DEL. If the
device does not support ageing, the driver can simulate ageing using a
garbage collection timer to monitor FBD entries. Expired entries will be
garbage collection timer to monitor FDB entries. Expired entries will be
notified to the bridge using SWITCHDEV_FDB_DEL. See rocker driver for
example of driver running ageing timer.

19
Documentation/printk-formats.txt
View File

@ -58,20 +58,23 @@ Symbols/Function Pointers
%ps versatile_init
%pB prev_fn_of_versatile_init+0x88/0x88
For printing symbols and function pointers. The ``S`` and ``s`` specifiers
result in the symbol name with (``S``) or without (``s``) offsets. Where
this is used on a kernel without KALLSYMS - the symbol address is
printed instead.
The ``F`` and ``f`` specifiers are for printing function pointers,
for example, f->func, &gettimeofday. They have the same result as
``S`` and ``s`` specifiers. But they do an extra conversion on
ia64, ppc64 and parisc64 architectures where the function pointers
are actually function descriptors.
The ``S`` and ``s`` specifiers can be used for printing symbols
from direct addresses, for example, __builtin_return_address(0),
(void *)regs->ip. They result in the symbol name with (``S``) or
without (``s``) offsets. If KALLSYMS are disabled then the symbol
address is printed instead.
The ``B`` specifier results in the symbol name with offsets and should be
used when printing stack backtraces. The specifier takes into
consideration the effect of compiler optimisations which may occur
when tail-call``s are used and marked with the noreturn GCC attribute.
On ia64, ppc64 and parisc64 architectures function pointers are
actually function descriptors which must first be resolved. The ``F`` and
``f`` specifiers perform this resolution and then provide the same
functionality as the ``S`` and ``s`` specifiers.
Kernel Pointers
===============

47
Documentation/sysctl/net.txt
View File

@ -35,9 +35,34 @@ Table : Subdirectories in /proc/sys/net
bpf_jit_enable
--------------
This enables Berkeley Packet Filter Just in Time compiler.
Currently supported on x86_64 architecture, bpf_jit provides a framework
to speed packet filtering, the one used by tcpdump/libpcap for example.
This enables the BPF Just in Time (JIT) compiler. BPF is a flexible
and efficient infrastructure allowing to execute bytecode at various
hook points. It is used in a number of Linux kernel subsystems such
as networking (e.g. XDP, tc), tracing (e.g. kprobes, uprobes, tracepoints)
and security (e.g. seccomp). LLVM has a BPF back end that can compile
restricted C into a sequence of BPF instructions. After program load
through bpf(2) and passing a verifier in the kernel, a JIT will then
translate these BPF proglets into native CPU instructions. There are
two flavors of JITs, the newer eBPF JIT currently supported on:
- x86_64
- arm64
- ppc64
- sparc64
- mips64
- s390x
And the older cBPF JIT supported on the following archs:
- arm
- mips
- ppc
- sparc
eBPF JITs are a superset of cBPF JITs, meaning the kernel will
migrate cBPF instructions into eBPF instructions and then JIT
compile them transparently. Older cBPF JITs can only translate
tcpdump filters, seccomp rules, etc, but not mentioned eBPF
programs loaded through bpf(2).
Values :
0 - disable the JIT (default value)
1 - enable the JIT
@ -46,9 +71,9 @@ Values :
bpf_jit_harden
--------------
This enables hardening for the Berkeley Packet Filter Just in Time compiler.
Supported are eBPF JIT backends. Enabling hardening trades off performance,
but can mitigate JIT spraying.
This enables hardening for the BPF JIT compiler. Supported are eBPF
JIT backends. Enabling hardening trades off performance, but can
mitigate JIT spraying.
Values :
0 - disable JIT hardening (default value)
1 - enable JIT hardening for unprivileged users only
@ -57,11 +82,11 @@ Values :
bpf_jit_kallsyms
----------------
When Berkeley Packet Filter Just in Time compiler is enabled, then compiled
images are unknown addresses to the kernel, meaning they neither show up in
traces nor in /proc/kallsyms. This enables export of these addresses, which
can be used for debugging/tracing. If bpf_jit_harden is enabled, this feature
is disabled.
When BPF JIT compiler is enabled, then compiled images are unknown
addresses to the kernel, meaning they neither show up in traces nor
in /proc/kallsyms. This enables export of these addresses, which can
be used for debugging/tracing. If bpf_jit_harden is enabled, this
feature is disabled.
Values :
0 - disable JIT kallsyms export (default value)
1 - enable JIT kallsyms export for privileged users only

1
MAINTAINERS
View File

@ -7111,7 +7111,6 @@ 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
T: git git://git.infradead.org/users/jcooper/linux.git irqchip/core
F: Documentation/devicetree/bindings/interrupt-controller/
F: drivers/irqchip/

15
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 13
SUBLEVEL = 0
EXTRAVERSION = -rc5
EXTRAVERSION = -rc7
NAME = Fearless Coyote
# *DOCUMENTATION*
@ -396,7 +396,7 @@ LINUXINCLUDE := \
KBUILD_CPPFLAGS := -D__KERNEL__
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common \
-fno-strict-aliasing -fno-common -fshort-wchar \
-Werror-implicit-function-declaration \
-Wno-format-security \
-std=gnu89 $(call cc-option,-fno-PIE)
@ -442,7 +442,7 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
# ===========================================================================
# Rules shared between *config targets and build targets
# Basic helpers built in scripts/
# Basic helpers built in scripts/basic/
PHONY += scripts_basic
scripts_basic:
$(Q)$(MAKE) $(build)=scripts/basic
@ -505,7 +505,7 @@ ifeq ($(KBUILD_EXTMOD),)
endif
endif
endif
# install and module_install need also be processed one by one
# install and modules_install need also be processed one by one
ifneq ($(filter install,$(MAKECMDGOALS)),)
ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
mixed-targets := 1
@ -964,7 +964,7 @@ export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y2) $(drivers-y) $(net-y) $(virt-
export KBUILD_VMLINUX_LIBS := $(libs-y1)
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
export LDFLAGS_vmlinux
# used by scripts/pacmage/Makefile
# used by scripts/package/Makefile
export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools)
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS)
@ -992,8 +992,8 @@ include/generated/autoksyms.h: FORCE
ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
# Final link of vmlinux with optional arch pass after final link
cmd_link-vmlinux = \
$(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \
cmd_link-vmlinux = \
$(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE
@ -1184,6 +1184,7 @@ PHONY += kselftest
kselftest:
$(Q)$(MAKE) -C tools/testing/selftests run_tests
PHONY += kselftest-clean
kselftest-clean:
$(Q)$(MAKE) -C tools/testing/selftests clean

1
arch/arc/Kconfig
View File

@ -96,7 +96,6 @@ menu "ARC Architecture Configuration"
menu "ARC Platform/SoC/Board"
source "arch/arc/plat-sim/Kconfig"
source "arch/arc/plat-tb10x/Kconfig"
source "arch/arc/plat-axs10x/Kconfig"
#New platform adds here

2
arch/arc/Makefile
View File

@ -107,7 +107,7 @@ core-y += arch/arc/
# w/o this dtb won't embed into kernel binary
core-y += arch/arc/boot/dts/
core-$(CONFIG_ARC_PLAT_SIM) += arch/arc/plat-sim/
core-y += arch/arc/plat-sim/
core-$(CONFIG_ARC_PLAT_TB10X) += arch/arc/plat-tb10x/
core-$(CONFIG_ARC_PLAT_AXS10X) += arch/arc/plat-axs10x/
core-$(CONFIG_ARC_PLAT_EZNPS) += arch/arc/plat-eznps/

20
arch/arc/boot/dts/axc001.dtsi
View File

@ -15,15 +15,15 @@
/ {
compatible = "snps,arc";
#address-cells = <1>;
#size-cells = <1>;
#address-cells = <2>;
#size-cells = <2>;
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xf0000000 0x10000000>;
ranges = <0x00000000 0x0 0xf0000000 0x10000000>;
core_clk: core_clk {
#clock-cells = <0>;
@ -91,23 +91,21 @@
mb_intc: dw-apb-ictl@0xe0012000 {
#interrupt-cells = <1>;
compatible = "snps,dw-apb-ictl";
reg = < 0xe0012000 0x200 >;
reg = < 0x0 0xe0012000 0x0 0x200 >;
interrupt-controller;
interrupt-parent = <&core_intc>;
interrupts = < 7 >;
};
memory {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0x80000000 0x20000000>;
device_type = "memory";
reg = <0x80000000 0x1b000000>; /* (512 - 32) MiB */
/* CONFIG_KERNEL_RAM_BASE_ADDRESS needs to match low mem start */
reg = <0x0 0x80000000 0x0 0x1b000000>; /* (512 - 32) MiB */
};
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
/*
* We just move frame buffer area to the very end of
@ -118,7 +116,7 @@
*/
frame_buffer: frame_buffer@9e000000 {
compatible = "shared-dma-pool";
reg = <0x9e000000 0x2000000>;
reg = <0x0 0x9e000000 0x0 0x2000000>;
no-map;
};
};

21
arch/arc/boot/dts/axc003.dtsi
View File

@ -14,15 +14,15 @@
/ {
compatible = "snps,arc";
#address-cells = <1>;
#size-cells = <1>;
#address-cells = <2>;
#size-cells = <2>;
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xf0000000 0x10000000>;
ranges = <0x00000000 0x0 0xf0000000 0x10000000>;
core_clk: core_clk {
#clock-cells = <0>;
@ -94,30 +94,29 @@
mb_intc: dw-apb-ictl@0xe0012000 {
#interrupt-cells = <1>;
compatible = "snps,dw-apb-ictl";
reg = < 0xe0012000 0x200 >;
reg = < 0x0 0xe0012000 0x0 0x200 >;
interrupt-controller;
interrupt-parent = <&core_intc>;
interrupts = < 24 >;
};
memory {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0x80000000 0x40000000>;
device_type = "memory";
reg = <0x80000000 0x20000000>; /* 512MiB */
/* CONFIG_KERNEL_RAM_BASE_ADDRESS needs to match low mem start */
reg = <0x0 0x80000000 0x0 0x20000000 /* 512 MiB low mem */
0x1 0xc0000000 0x0 0x40000000>; /* 1 GiB highmem */
};
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
/*
* Move frame buffer out of IOC aperture (0x8z-0xAz).
*/
frame_buffer: frame_buffer@be000000 {
compatible = "shared-dma-pool";
reg = <0xbe000000 0x2000000>;
reg = <0x0 0xbe000000 0x0 0x2000000>;
no-map;
};
};

21
arch/arc/boot/dts/axc003_idu.dtsi
View File

@ -14,15 +14,15 @@
/ {
compatible = "snps,arc";
#address-cells = <1>;
#size-cells = <1>;
#address-cells = <2>;
#size-cells = <2>;
cpu_card {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xf0000000 0x10000000>;
ranges = <0x00000000 0x0 0xf0000000 0x10000000>;
core_clk: core_clk {
#clock-cells = <0>;
@ -100,30 +100,29 @@
mb_intc: dw-apb-ictl@0xe0012000 {
#interrupt-cells = <1>;
compatible = "snps,dw-apb-ictl";
reg = < 0xe0012000 0x200 >;
reg = < 0x0 0xe0012000 0x0 0x200 >;
interrupt-controller;
interrupt-parent = <&idu_intc>;
interrupts = <0>;
};
memory {
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0x80000000 0x40000000>;
device_type = "memory";
reg = <0x80000000 0x20000000>; /* 512MiB */
/* CONFIG_KERNEL_RAM_BASE_ADDRESS needs to match low mem start */
reg = <0x0 0x80000000 0x0 0x20000000 /* 512 MiB low mem */
0x1 0xc0000000 0x0 0x40000000>; /* 1 GiB highmem */
};
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
/*
* Move frame buffer out of IOC aperture (0x8z-0xAz).
*/
frame_buffer: frame_buffer@be000000 {
compatible = "shared-dma-pool";
reg = <0xbe000000 0x2000000>;
reg = <0x0 0xbe000000 0x0 0x2000000>;
no-map;
};
};

2
arch/arc/boot/dts/axs10x_mb.dtsi
View File

@ -13,7 +13,7 @@
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x00000000 0xe0000000 0x10000000>;
ranges = <0x00000000 0x0 0xe0000000 0x10000000>;
interrupt-parent = <&mb_intc>;
i2sclk: i2sclk@100a0 {

1
arch/arc/configs/haps_hs_defconfig
View File

@ -21,7 +21,6 @@ CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs"
CONFIG_PREEMPT=y

1
arch/arc/configs/haps_hs_smp_defconfig
View File

@ -23,7 +23,6 @@ CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
CONFIG_ARC_BUILTIN_DTB_NAME="haps_hs_idu"

1
arch/arc/configs/nps_defconfig
View File

@ -39,7 +39,6 @@ CONFIG_IP_PNP=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set

1
arch/arc/configs/nsim_700_defconfig
View File

@ -23,7 +23,6 @@ CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ARC_BUILTIN_DTB_NAME="nsim_700"
CONFIG_PREEMPT=y
# CONFIG_COMPACTION is not set

1
arch/arc/configs/nsim_hs_defconfig
View File

@ -26,7 +26,6 @@ CONFIG_MODULE_FORCE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs"
CONFIG_PREEMPT=y

1
arch/arc/configs/nsim_hs_smp_defconfig
View File

@ -24,7 +24,6 @@ CONFIG_MODULE_FORCE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
CONFIG_ARC_BUILTIN_DTB_NAME="nsim_hs_idu"

1
arch/arc/configs/nsimosci_defconfig
View File

@ -23,7 +23,6 @@ CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci"
# CONFIG_COMPACTION is not set
CONFIG_NET=y

1
arch/arc/configs/nsimosci_hs_defconfig
View File

@ -23,7 +23,6 @@ CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_ARC_BUILTIN_DTB_NAME="nsimosci_hs"
# CONFIG_COMPACTION is not set

1
arch/arc/configs/nsimosci_hs_smp_defconfig
View File

@ -18,7 +18,6 @@ CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
CONFIG_ARC_PLAT_SIM=y
CONFIG_ISA_ARCV2=y
CONFIG_SMP=y
# CONFIG_ARC_TIMERS_64BIT is not set

1
arch/arc/configs/tb10x_defconfig
View File

@ -38,7 +38,6 @@ CONFIG_IP_MULTICAST=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set

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

@ -96,7 +96,9 @@ extern unsigned long perip_base, perip_end;
#define ARC_REG_SLC_FLUSH 0x904
#define ARC_REG_SLC_INVALIDATE 0x905
#define ARC_REG_SLC_RGN_START 0x914
#define ARC_REG_SLC_RGN_START1 0x915
#define ARC_REG_SLC_RGN_END 0x916
#define ARC_REG_SLC_RGN_END1 0x917
/* Bit val in SLC_CONTROL */
#define SLC_CTRL_DIS 0x001

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

@ -94,6 +94,8 @@ static inline int is_pae40_enabled(void)
return IS_ENABLED(CONFIG_ARC_HAS_PAE40);
}
extern int pae40_exist_but_not_enab(void);
#endif /* !__ASSEMBLY__ */
#endif

3
arch/arc/kernel/intc-arcv2.c
View File

@ -75,10 +75,13 @@ void arc_init_IRQ(void)
* Set a default priority for all available interrupts to prevent
* switching of register banks if Fast IRQ and multiple register banks
* are supported by CPU.
* Also disable all IRQ lines so faulty external hardware won't
* trigger interrupt that kernel is not ready to handle.
*/
for (i = NR_EXCEPTIONS; i < irq_bcr.irqs + NR_EXCEPTIONS; i++) {
write_aux_reg(AUX_IRQ_SELECT, i);
write_aux_reg(AUX_IRQ_PRIORITY, ARCV2_IRQ_DEF_PRIO);
write_aux_reg(AUX_IRQ_ENABLE, 0);
}
/* setup status32, don't enable intr yet as kernel doesn't want */

14
arch/arc/kernel/intc-compact.c
View File

@ -27,7 +27,7 @@
*/
void arc_init_IRQ(void)
{
int level_mask = 0;
int level_mask = 0, i;
/* Is timer high priority Interrupt (Level2 in ARCompact jargon) */
level_mask |= IS_ENABLED(CONFIG_ARC_COMPACT_IRQ_LEVELS) << TIMER0_IRQ;
@ -40,6 +40,18 @@ void arc_init_IRQ(void)
if (level_mask)
pr_info("Level-2 interrupts bitset %x\n", level_mask);
/*
* Disable all IRQ lines so faulty external hardware won't
* trigger interrupt that kernel is not ready to handle.
*/
for (i = TIMER0_IRQ; i < NR_CPU_IRQS; i++) {
unsigned int ienb;
ienb = read_aux_reg(AUX_IENABLE);
ienb &= ~(1 << i);
write_aux_reg(AUX_IENABLE, ienb);
}
}
/*

50
arch/arc/mm/cache.c
View File

@ -665,6 +665,7 @@ noinline void slc_op(phys_addr_t paddr, unsigned long sz, const int op)
static DEFINE_SPINLOCK(lock);
unsigned long flags;
unsigned int ctrl;
phys_addr_t end;
spin_lock_irqsave(&lock, flags);
@ -694,8 +695,19 @@ noinline void slc_op(phys_addr_t paddr, unsigned long sz, const int op)
* END needs to be setup before START (latter triggers the operation)
* END can't be same as START, so add (l2_line_sz - 1) to sz
*/
write_aux_reg(ARC_REG_SLC_RGN_END, (paddr + sz + l2_line_sz - 1));
write_aux_reg(ARC_REG_SLC_RGN_START, paddr);
end = paddr + sz + l2_line_sz - 1;
if (is_pae40_enabled())
write_aux_reg(ARC_REG_SLC_RGN_END1, upper_32_bits(end));
write_aux_reg(ARC_REG_SLC_RGN_END, lower_32_bits(end));
if (is_pae40_enabled())
write_aux_reg(ARC_REG_SLC_RGN_START1, upper_32_bits(paddr));
write_aux_reg(ARC_REG_SLC_RGN_START, lower_32_bits(paddr));
/* Make sure "busy" bit reports correct stataus, see STAR 9001165532 */
read_aux_reg(ARC_REG_SLC_CTRL);
while (read_aux_reg(ARC_REG_SLC_CTRL) & SLC_CTRL_BUSY);
@ -1111,6 +1123,13 @@ noinline void __init arc_ioc_setup(void)
__dc_enable();
}
/*
* Cache related boot time checks/setups only needed on master CPU:
* - Geometry checks (kernel build and hardware agree: e.g. L1_CACHE_BYTES)
* Assume SMP only, so all cores will have same cache config. A check on
* one core suffices for all
* - IOC setup / dma callbacks only need to be done once
*/
void __init arc_cache_init_master(void)
{
unsigned int __maybe_unused cpu = smp_processor_id();
@ -1190,12 +1209,27 @@ void __ref arc_cache_init(void)
printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
/*
* Only master CPU needs to execute rest of function:
* - Assume SMP so all cores will have same cache config so
* any geomtry checks will be same for all
* - IOC setup / dma callbacks only need to be setup once
*/
if (!cpu)
arc_cache_init_master();
/*
* In PAE regime, TLB and cache maintenance ops take wider addresses
* And even if PAE is not enabled in kernel, the upper 32-bits still need
* to be zeroed to keep the ops sane.
* As an optimization for more common !PAE enabled case, zero them out
* once at init, rather than checking/setting to 0 for every runtime op
*/
if (is_isa_arcv2() && pae40_exist_but_not_enab()) {
if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE))
write_aux_reg(ARC_REG_IC_PTAG_HI, 0);
if (IS_ENABLED(CONFIG_ARC_HAS_DCACHE))
write_aux_reg(ARC_REG_DC_PTAG_HI, 0);
if (l2_line_sz) {
write_aux_reg(ARC_REG_SLC_RGN_END1, 0);
write_aux_reg(ARC_REG_SLC_RGN_START1, 0);
}
}
}

45
arch/arc/mm/dma.c
View File

@ -153,6 +153,19 @@ static void _dma_cache_sync(phys_addr_t paddr, size_t size,
}
}
/*
* arc_dma_map_page - map a portion of a page for streaming DMA
*
* Ensure that any data held in the cache is appropriately discarded
* or written back.
*
* The device owns this memory once this call has completed. The CPU
* can regain ownership by calling dma_unmap_page().
*
* Note: while it takes struct page as arg, caller can "abuse" it to pass
* a region larger than PAGE_SIZE, provided it is physically contiguous
* and this still works correctly
*/
static dma_addr_t arc_dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size, enum dma_data_direction dir,
unsigned long attrs)
@ -165,6 +178,24 @@ static dma_addr_t arc_dma_map_page(struct device *dev, struct page *page,
return plat_phys_to_dma(dev, paddr);
}
/*
* arc_dma_unmap_page - unmap a buffer previously mapped through dma_map_page()
*
* After this call, reads by the CPU to the buffer are guaranteed to see
* whatever the device wrote there.
*
* Note: historically this routine was not implemented for ARC
*/
static void arc_dma_unmap_page(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir,
unsigned long attrs)
{
phys_addr_t paddr = plat_dma_to_phys(dev, handle);
if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
_dma_cache_sync(paddr, size, dir);
}
static int arc_dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir, unsigned long attrs)
{
@ -178,6 +209,18 @@ static int arc_dma_map_sg(struct device *dev, struct scatterlist *sg,
return nents;
}
static void arc_dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir,
unsigned long attrs)
{
struct scatterlist *s;
int i;
for_each_sg(sg, s, nents, i)
arc_dma_unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir,
attrs);
}
static void arc_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size, enum dma_data_direction dir)
{
@ -223,7 +266,9 @@ const struct dma_map_ops arc_dma_ops = {
.free = arc_dma_free,
.mmap = arc_dma_mmap,
.map_page = arc_dma_map_page,
.unmap_page = arc_dma_unmap_page,
.map_sg = arc_dma_map_sg,
.unmap_sg = arc_dma_unmap_sg,
.sync_single_for_device = arc_dma_sync_single_for_device,
.sync_single_for_cpu = arc_dma_sync_single_for_cpu,
.sync_sg_for_cpu = arc_dma_sync_sg_for_cpu,

12
arch/arc/mm/tlb.c
View File

@ -104,6 +104,8 @@
/* A copy of the ASID from the PID reg is kept in asid_cache */
DEFINE_PER_CPU(unsigned int, asid_cache) = MM_CTXT_FIRST_CYCLE;
static int __read_mostly pae_exists;
/*
* Utility Routine to erase a J-TLB entry
* Caller needs to setup Index Reg (manually or via getIndex)
@ -784,7 +786,7 @@ void read_decode_mmu_bcr(void)
mmu->u_dtlb = mmu4->u_dtlb * 4;
mmu->u_itlb = mmu4->u_itlb * 4;
mmu->sasid = mmu4->sasid;
mmu->pae = mmu4->pae;
pae_exists = mmu->pae = mmu4->pae;
}
}
@ -809,6 +811,11 @@ char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len)
return buf;
}
int pae40_exist_but_not_enab(void)
{
return pae_exists && !is_pae40_enabled();
}
void arc_mmu_init(void)
{
char str[256];
@ -859,6 +866,9 @@ void arc_mmu_init(void)
/* swapper_pg_dir is the pgd for the kernel, used by vmalloc */
write_aux_reg(ARC_REG_SCRATCH_DATA0, swapper_pg_dir);
#endif
if (pae40_exist_but_not_enab())
write_aux_reg(ARC_REG_TLBPD1HI, 0);
}
/*

13
arch/arc/plat-sim/Kconfig
View File

@ -1,13 +0,0 @@
#
# Copyright (C) 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
menuconfig ARC_PLAT_SIM
bool "ARC nSIM based simulation virtual platforms"
help
Support for nSIM based ARC simulation platforms
This includes the standalone nSIM (uart only) vs. System C OSCI VP

5
arch/arc/plat-sim/platform.c
View File

@ -20,11 +20,14 @@
*/
static const char *simulation_compat[] __initconst = {
#ifdef CONFIG_ISA_ARCOMPACT
"snps,nsim",
"snps,nsim_hs",
"snps,nsimosci",
#else
"snps,nsim_hs",
"snps,nsimosci_hs",
"snps,zebu_hs",
#endif
NULL,
};

1
arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
View File

@ -266,6 +266,7 @@
&hdmicec {
status = "okay";
needs-hpd;
};
&hsi2c_4 {

1
arch/arm/boot/dts/imx25.dtsi
View File

@ -297,6 +297,7 @@
#address-cells = <1>;
#size-cells = <1>;
status = "disabled";
ranges;
adc: adc@50030800 {
compatible = "fsl,imx25-gcq";

4
arch/arm/boot/dts/imx6qdl-nitrogen6_som2.dtsi
View File

@ -507,7 +507,7 @@
pinctrl_pcie: pciegrp {
fsl,pins = <
/* PCIe reset */
MX6QDL_PAD_EIM_BCLK__GPIO6_IO31 0x030b0
MX6QDL_PAD_EIM_DA0__GPIO3_IO00 0x030b0
MX6QDL_PAD_EIM_DA4__GPIO3_IO04 0x030b0
>;
};
@ -668,7 +668,7 @@
&pcie {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pcie>;
reset-gpio = <&gpio6 31 GPIO_ACTIVE_LOW>;
reset-gpio = <&gpio3 0 GPIO_ACTIVE_LOW>;
status = "okay";
};

16
arch/arm/boot/dts/imx7d-sdb.dts
View File

@ -557,6 +557,14 @@
>;
};
pinctrl_spi4: spi4grp {
fsl,pins = <
MX7D_PAD_GPIO1_IO09__GPIO1_IO9 0x59
MX7D_PAD_GPIO1_IO12__GPIO1_IO12 0x59
MX7D_PAD_GPIO1_IO13__GPIO1_IO13 0x59
>;
};
pinctrl_tsc2046_pendown: tsc2046_pendown {
fsl,pins = <
MX7D_PAD_EPDC_BDR1__GPIO2_IO29 0x59
@ -697,13 +705,5 @@
fsl,pins = <
MX7D_PAD_LPSR_GPIO1_IO01__PWM1_OUT 0x110b0
>;
pinctrl_spi4: spi4grp {
fsl,pins = <
MX7D_PAD_GPIO1_IO09__GPIO1_IO9 0x59
MX7D_PAD_GPIO1_IO12__GPIO1_IO12 0x59
MX7D_PAD_GPIO1_IO13__GPIO1_IO13 0x59
>;
};
};
};

12
arch/arm/boot/dts/sama5d2.dtsi
View File

@ -303,7 +303,7 @@
#size-cells = <1>;
atmel,smc = <&hsmc>;
reg = <0x10000000 0x10000000
0x40000000 0x30000000>;
0x60000000 0x30000000>;
ranges = <0x0 0x0 0x10000000 0x10000000
0x1 0x0 0x60000000 0x10000000
0x2 0x0 0x70000000 0x10000000
@ -1048,18 +1048,18 @@
};
hsmc: hsmc@f8014000 {
compatible = "atmel,sama5d3-smc", "syscon", "simple-mfd";
compatible = "atmel,sama5d2-smc", "syscon", "simple-mfd";
reg = <0xf8014000 0x1000>;
interrupts = <5 IRQ_TYPE_LEVEL_HIGH 6>;
interrupts = <17 IRQ_TYPE_LEVEL_HIGH 6>;
clocks = <&hsmc_clk>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
pmecc: ecc-engine@ffffc070 {
pmecc: ecc-engine@f8014070 {
compatible = "atmel,sama5d2-pmecc";
reg = <0xffffc070 0x490>,
<0xffffc500 0x100>;
reg = <0xf8014070 0x490>,
<0xf8014500 0x100>;
};
};

2
arch/arm/mach-at91/Kconfig
View File

@ -1,7 +1,7 @@
menuconfig ARCH_AT91
bool "Atmel SoCs"
depends on ARCH_MULTI_V4T || ARCH_MULTI_V5 || ARCH_MULTI_V7 || ARM_SINGLE_ARMV7M
select ARM_CPU_SUSPEND if PM
select ARM_CPU_SUSPEND if PM && ARCH_MULTI_V7
select COMMON_CLK_AT91
select GPIOLIB
select PINCTRL

12
arch/arm/mach-at91/pm.c
View File

@ -608,6 +608,9 @@ static void __init at91_pm_init(void (*pm_idle)(void))
void __init at91rm9200_pm_init(void)
{
if (!IS_ENABLED(CONFIG_SOC_AT91RM9200))
return;
at91_dt_ramc();
/*
@ -620,18 +623,27 @@ void __init at91rm9200_pm_init(void)
void __init at91sam9_pm_init(void)
{
if (!IS_ENABLED(CONFIG_SOC_AT91SAM9))
return;
at91_dt_ramc();
at91_pm_init(at91sam9_idle);
}
void __init sama5_pm_init(void)
{
if (!IS_ENABLED(CONFIG_SOC_SAMA5))
return;
at91_dt_ramc();
at91_pm_init(NULL);
}
void __init sama5d2_pm_init(void)
{
if (!IS_ENABLED(CONFIG_SOC_SAMA5D2))
return;
at91_pm_backup_init();
sama5_pm_init();
}

1
arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
View File

@ -51,6 +51,7 @@
compatible = "sinovoip,bananapi-m64", "allwinner,sun50i-a64";
aliases {
ethernet0 = &emac;
serial0 = &uart0;
serial1 = &uart1;
};

1
arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
View File

@ -51,6 +51,7 @@
compatible = "pine64,pine64", "allwinner,sun50i-a64";
aliases {
ethernet0 = &emac;
serial0 = &uart0;
serial1 = &uart1;
serial2 = &uart2;

1
arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts
View File

@ -53,6 +53,7 @@
"allwinner,sun50i-a64";
aliases {
ethernet0 = &emac;
serial0 = &uart0;
};

3
arch/arm64/boot/dts/allwinner/sun50i-h5.dtsi
View File

@ -120,5 +120,8 @@
};
&pio {
interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
compatible = "allwinner,sun50i-h5-pinctrl";
};

2
arch/arm64/boot/dts/renesas/salvator-common.dtsi
View File

@ -45,7 +45,7 @@
stdout-path = "serial0:115200n8";
};
audio_clkout: audio_clkout {
audio_clkout: audio-clkout {
/*
* This is same as <&rcar_sound 0>
* but needed to avoid cs2000/rcar_sound probe dead-lock

4
arch/arm64/include/asm/arch_timer.h
View File

@ -65,13 +65,13 @@ DECLARE_PER_CPU(const struct arch_timer_erratum_workaround *,
u64 _val; \
if (needs_unstable_timer_counter_workaround()) { \
const struct arch_timer_erratum_workaround *wa; \
preempt_disable(); \
preempt_disable_notrace(); \
wa = __this_cpu_read(timer_unstable_counter_workaround); \
if (wa && wa->read_##reg) \
_val = wa->read_##reg(); \
else \
_val = read_sysreg(reg); \
preempt_enable(); \
preempt_enable_notrace(); \
} else { \
_val = read_sysreg(reg); \
} \

4
arch/arm64/include/asm/elf.h
View File

@ -114,10 +114,10 @@
/*
* This is the base location for PIE (ET_DYN with INTERP) loads. On
* 64-bit, this is raised to 4GB to leave the entire 32-bit address
* 64-bit, this is above 4GB to leave the entire 32-bit address
* space open for things that want to use the area for 32-bit pointers.
*/
#define ELF_ET_DYN_BASE 0x100000000UL
#define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3)
#ifndef __ASSEMBLY__

2
arch/arm64/kernel/fpsimd.c
View File

@ -161,9 +161,11 @@ void fpsimd_flush_thread(void)
{
if (!system_supports_fpsimd())
return;
preempt_disable();
memset(&current->thread.fpsimd_state, 0, sizeof(struct fpsimd_state));
fpsimd_flush_task_state(current);
set_thread_flag(TIF_FOREIGN_FPSTATE);
preempt_enable();
}
/*

1
arch/arm64/kernel/head.S
View File

@ -354,7 +354,6 @@ __primary_switched:
tst x23, ~(MIN_KIMG_ALIGN - 1) // already running randomized?
b.ne 0f
mov x0, x21 // pass FDT address in x0
mov x1, x23 // pass modulo offset in x1
bl kaslr_early_init // parse FDT for KASLR options
cbz x0, 0f // KASLR disabled? just proceed
orr x23, x23, x0 // record KASLR offset

20
arch/arm64/kernel/kaslr.c
View File

@ -75,7 +75,7 @@ extern void *__init __fixmap_remap_fdt(phys_addr_t dt_phys, int *size,
* containing function pointers) to be reinitialized, and zero-initialized
* .bss variables will be reset to 0.
*/
u64 __init kaslr_early_init(u64 dt_phys, u64 modulo_offset)
u64 __init kaslr_early_init(u64 dt_phys)
{
void *fdt;
u64 seed, offset, mask, module_range;
@ -131,15 +131,17 @@ u64 __init kaslr_early_init(u64 dt_phys, u64 modulo_offset)
/*
* The kernel Image should not extend across a 1GB/32MB/512MB alignment
* boundary (for 4KB/16KB/64KB granule kernels, respectively). If this
* happens, increase the KASLR offset by the size of the kernel image
* rounded up by SWAPPER_BLOCK_SIZE.
* happens, round down the KASLR offset by (1 << SWAPPER_TABLE_SHIFT).
*
* NOTE: The references to _text and _end below will already take the
* modulo offset (the physical displacement modulo 2 MB) into
* account, given that the physical placement is controlled by
* the loader, and will not change as a result of the virtual
* mapping we choose.
*/
if ((((u64)_text + offset + modulo_offset) >> SWAPPER_TABLE_SHIFT) !=
(((u64)_end + offset + modulo_offset) >> SWAPPER_TABLE_SHIFT)) {
u64 kimg_sz = _end - _text;
offset = (offset + round_up(kimg_sz, SWAPPER_BLOCK_SIZE))
& mask;
}
if ((((u64)_text + offset) >> SWAPPER_TABLE_SHIFT) !=
(((u64)_end + offset) >> SWAPPER_TABLE_SHIFT))
offset = round_down(offset, 1 << SWAPPER_TABLE_SHIFT);
if (IS_ENABLED(CONFIG_KASAN))
/*

5
arch/arm64/mm/fault.c
View File

@ -435,8 +435,11 @@ retry:
* the mmap_sem because it would already be released
* in __lock_page_or_retry in mm/filemap.c.
*/
if (fatal_signal_pending(current))
if (fatal_signal_pending(current)) {
if (!user_mode(regs))
goto no_context;
return 0;
}
/*
* Clear FAULT_FLAG_ALLOW_RETRY to avoid any risk of

2
arch/powerpc/Kconfig
View File

@ -199,7 +199,7 @@ config PPC
select HAVE_OPTPROBES if PPC64
select HAVE_PERF_EVENTS
select HAVE_PERF_EVENTS_NMI if PPC64
select HAVE_HARDLOCKUP_DETECTOR_PERF if HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH
select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_RCU_TABLE_FREE if SMP

18
arch/powerpc/include/asm/mmu_context.h
View File

@ -90,6 +90,24 @@ static inline void switch_mm_irqs_off(struct mm_struct *prev,
/* Mark this context has been used on the new CPU */
if (!cpumask_test_cpu(smp_processor_id(), mm_cpumask(next))) {
cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
/*
* This full barrier orders the store to the cpumask above vs
* a subsequent operation which allows this CPU to begin loading
* translations for next.
*
* When using the radix MMU that operation is the load of the
* MMU context id, which is then moved to SPRN_PID.
*
* For the hash MMU it is either the first load from slb_cache
* in switch_slb(), and/or the store of paca->mm_ctx_id in
* copy_mm_to_paca().
*
* On the read side the barrier is in pte_xchg(), which orders
* the store to the PTE vs the load of mm_cpumask.
*/
smp_mb();
new_on_cpu = true;
}

1
arch/powerpc/include/asm/pgtable-be-types.h
View File

@ -87,6 +87,7 @@ static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
unsigned long *p = (unsigned long *)ptep;
__be64 prev;
/* See comment in switch_mm_irqs_off() */
prev = (__force __be64)__cmpxchg_u64(p, (__force unsigned long)pte_raw(old),
(__force unsigned long)pte_raw(new));

1
arch/powerpc/include/asm/pgtable-types.h
View File

@ -62,6 +62,7 @@ static inline bool pte_xchg(pte_t *ptep, pte_t old, pte_t new)
{
unsigned long *p = (unsigned long *)ptep;
/* See comment in switch_mm_irqs_off() */
return pte_val(old) == __cmpxchg_u64(p, pte_val(old), pte_val(new));
}
#endif

5
arch/powerpc/kernel/process.c
View File

@ -362,7 +362,8 @@ void enable_kernel_vsx(void)
cpumsr = msr_check_and_set(MSR_FP|MSR_VEC|MSR_VSX);
if (current->thread.regs && (current->thread.regs->msr & MSR_VSX)) {
if (current->thread.regs &&
(current->thread.regs->msr & (MSR_VSX|MSR_VEC|MSR_FP))) {
check_if_tm_restore_required(current);
/*
* If a thread has already been reclaimed then the
@ -386,7 +387,7 @@ void flush_vsx_to_thread(struct task_struct *tsk)
{
if (tsk->thread.regs) {
preempt_disable();
if (tsk->thread.regs->msr & MSR_VSX) {
if (tsk->thread.regs->msr & (MSR_VSX|MSR_VEC|MSR_FP)) {
BUG_ON(tsk != current);
giveup_vsx(tsk);
}

56
arch/powerpc/kvm/book3s_64_vio.c
View File

@ -294,32 +294,26 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
struct kvm_create_spapr_tce_64 *args)
{
struct kvmppc_spapr_tce_table *stt = NULL;
struct kvmppc_spapr_tce_table *siter;
unsigned long npages, size;
int ret = -ENOMEM;
int i;
int fd = -1;
if (!args->size)
return -EINVAL;
/* Check this LIOBN hasn't been previously allocated */
list_for_each_entry(stt, &kvm->arch.spapr_tce_tables, list) {
if (stt->liobn == args->liobn)
return -EBUSY;
}
size = _ALIGN_UP(args->size, PAGE_SIZE >> 3);
npages = kvmppc_tce_pages(size);
ret = kvmppc_account_memlimit(kvmppc_stt_pages(npages), true);
if (ret) {
stt = NULL;
goto fail;
}
if (ret)
return ret;
ret = -ENOMEM;
stt = kzalloc(sizeof(*stt) + npages * sizeof(struct page *),
GFP_KERNEL);
if (!stt)
goto fail;
goto fail_acct;
stt->liobn = args->liobn;
stt->page_shift = args->page_shift;
@ -334,24 +328,42 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
goto fail;
}
kvm_get_kvm(kvm);
ret = fd = anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
stt, O_RDWR | O_CLOEXEC);
if (ret < 0)
goto fail;
mutex_lock(&kvm->lock);
list_add_rcu(&stt->list, &kvm->arch.spapr_tce_tables);
/* Check this LIOBN hasn't been previously allocated */
ret = 0;
list_for_each_entry(siter, &kvm->arch.spapr_tce_tables, list) {
if (siter->liobn == args->liobn) {
ret = -EBUSY;
break;
}
}
if (!ret) {
list_add_rcu(&stt->list, &kvm->arch.spapr_tce_tables);
kvm_get_kvm(kvm);
}
mutex_unlock(&kvm->lock);
return anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
stt, O_RDWR | O_CLOEXEC);
if (!ret)
return fd;
fail:
if (stt) {
for (i = 0; i < npages; i++)
if (stt->pages[i])
__free_page(stt->pages[i]);
put_unused_fd(fd);
kfree(stt);
}
fail:
for (i = 0; i < npages; i++)
if (stt->pages[i])
__free_page(stt->pages[i]);
kfree(stt);
fail_acct:
kvmppc_account_memlimit(kvmppc_stt_pages(npages), false);
return ret;
}

3
arch/powerpc/kvm/book3s_hv_rmhandlers.S
View File

@ -1291,6 +1291,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
/* Hypervisor doorbell - exit only if host IPI flag set */
cmpwi r12, BOOK3S_INTERRUPT_H_DOORBELL
bne 3f
BEGIN_FTR_SECTION
PPC_MSGSYNC
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300)
lbz r0, HSTATE_HOST_IPI(r13)
cmpwi r0, 0
beq 4f

68
arch/powerpc/kvm/book3s_xive_template.c
View File

@ -16,7 +16,22 @@ static void GLUE(X_PFX,ack_pending)(struct kvmppc_xive_vcpu *xc)
u8 cppr;
u16 ack;
/* XXX DD1 bug workaround: Check PIPR vs. CPPR first ! */
/*
* Ensure any previous store to CPPR is ordered vs.
* the subsequent loads from PIPR or ACK.
*/
eieio();
/*
* DD1 bug workaround: If PIPR is less favored than CPPR
* ignore the interrupt or we might incorrectly lose an IPB
* bit.
*/
if (cpu_has_feature(CPU_FTR_POWER9_DD1)) {
u8 pipr = __x_readb(__x_tima + TM_QW1_OS + TM_PIPR);
if (pipr >= xc->hw_cppr)
return;
}
/* Perform the acknowledge OS to register cycle. */
ack = be16_to_cpu(__x_readw(__x_tima + TM_SPC_ACK_OS_REG));
@ -235,6 +250,11 @@ skip_ipi:
/*
* If we found an interrupt, adjust what the guest CPPR should
* be as if we had just fetched that interrupt from HW.
*
* Note: This can only make xc->cppr smaller as the previous
* loop will only exit with hirq != 0 if prio is lower than
* the current xc->cppr. Thus we don't need to re-check xc->mfrr
* for pending IPIs.
*/
if (hirq)
xc->cppr = prio;
@ -380,6 +400,12 @@ X_STATIC int GLUE(X_PFX,h_cppr)(struct kvm_vcpu *vcpu, unsigned long cppr)
old_cppr = xc->cppr;
xc->cppr = cppr;
/*
* Order the above update of xc->cppr with the subsequent
* read of xc->mfrr inside push_pending_to_hw()
*/
smp_mb();
/*
* We are masking less, we need to look for pending things
* to deliver and set VP pending bits accordingly to trigger
@ -420,21 +446,37 @@ X_STATIC int GLUE(X_PFX,h_eoi)(struct kvm_vcpu *vcpu, unsigned long xirr)
* used to signal MFRR changes is EOId when fetched from
* the queue.
*/
if (irq == XICS_IPI || irq == 0)
if (irq == XICS_IPI || irq == 0) {
/*
* This barrier orders the setting of xc->cppr vs.
* subsquent test of xc->mfrr done inside
* scan_interrupts and push_pending_to_hw
*/
smp_mb();
goto bail;
}
/* Find interrupt source */
sb = kvmppc_xive_find_source(xive, irq, &src);
if (!sb) {
pr_devel(" source not found !\n");
rc = H_PARAMETER;
/* Same as above */
smp_mb();
goto bail;
}
state = &sb->irq_state[src];
kvmppc_xive_select_irq(state, &hw_num, &xd);
state->in_eoi = true;
mb();
/*
* This barrier orders both setting of in_eoi above vs,
* subsequent test of guest_priority, and the setting
* of xc->cppr vs. subsquent test of xc->mfrr done inside
* scan_interrupts and push_pending_to_hw
*/
smp_mb();
again:
if (state->guest_priority == MASKED) {
@ -461,6 +503,14 @@ again:
}
/*
* This barrier orders the above guest_priority check
* and spin_lock/unlock with clearing in_eoi below.
*
* It also has to be a full mb() as it must ensure
* the MMIOs done in source_eoi() are completed before
* state->in_eoi is visible.
*/
mb();
state->in_eoi = false;
bail:
@ -495,6 +545,18 @@ X_STATIC int GLUE(X_PFX,h_ipi)(struct kvm_vcpu *vcpu, unsigned long server,
/* Locklessly write over MFRR */
xc->mfrr = mfrr;
/*
* The load of xc->cppr below and the subsequent MMIO store
* to the IPI must happen after the above mfrr update is
* globally visible so that:
*
* - Synchronize with another CPU doing an H_EOI or a H_CPPR
* updating xc->cppr then reading xc->mfrr.
*
* - The target of the IPI sees the xc->mfrr update
*/
mb();
/* Shoot the IPI if most favored than target cppr */
if (mfrr < xc->cppr)
__x_writeq(0, __x_trig_page(&xc->vp_ipi_data));

7
arch/s390/kvm/sthyi.c
View File

@ -394,7 +394,7 @@ static int sthyi(u64 vaddr)
"srl %[cc],28\n"
: [cc] "=d" (cc)
: [code] "d" (code), [addr] "a" (addr)
: "memory", "cc");
: "3", "memory", "cc");
return cc;
}
@ -425,7 +425,7 @@ int handle_sthyi(struct kvm_vcpu *vcpu)
VCPU_EVENT(vcpu, 3, "STHYI: fc: %llu addr: 0x%016llx", code, addr);
trace_kvm_s390_handle_sthyi(vcpu, code, addr);
if (reg1 == reg2 || reg1 & 1 || reg2 & 1 || addr & ~PAGE_MASK)
if (reg1 == reg2 || reg1 & 1 || reg2 & 1)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
if (code & 0xffff) {
@ -433,6 +433,9 @@ int handle_sthyi(struct kvm_vcpu *vcpu)
goto out;
}
if (addr & ~PAGE_MASK)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
/*
* If the page has not yet been faulted in, we want to do that
* now and not after all the expensive calculations.

2
arch/sparc/include/asm/page_32.h
View File

@ -68,6 +68,7 @@ typedef struct { unsigned long iopgprot; } iopgprot_t;
#define iopgprot_val(x) ((x).iopgprot)
#define __pte(x) ((pte_t) { (x) } )
#define __pmd(x) ((pmd_t) { { (x) }, })
#define __iopte(x) ((iopte_t) { (x) } )
#define __pgd(x) ((pgd_t) { (x) } )
#define __ctxd(x) ((ctxd_t) { (x) } )
@ -95,6 +96,7 @@ typedef unsigned long iopgprot_t;
#define iopgprot_val(x) (x)
#define __pte(x) (x)
#define __pmd(x) ((pmd_t) { { (x) }, })
#define __iopte(x) (x)
#define __pgd(x) (x)
#define __ctxd(x) (x)

2
arch/sparc/kernel/pci_sun4v.c
View File

@ -1266,8 +1266,6 @@ static int pci_sun4v_probe(struct platform_device *op)
* ATU group, but ATU hcalls won't be available.
*/
hv_atu = false;
pr_err(PFX "Could not register hvapi ATU err=%d\n",
err);
} else {
pr_info(PFX "Registered hvapi ATU major[%lu] minor[%lu]\n",
vatu_major, vatu_minor);

2
arch/sparc/kernel/pcic.c
View File

@ -602,7 +602,7 @@ void pcibios_fixup_bus(struct pci_bus *bus)
{
struct pci_dev *dev;
int i, has_io, has_mem;
unsigned int cmd;
unsigned int cmd = 0;
struct linux_pcic *pcic;
/* struct linux_pbm_info* pbm = &pcic->pbm; */
int node;

24
arch/sparc/lib/multi3.S
View File

@ -5,26 +5,26 @@
.align 4
ENTRY(__multi3) /* %o0 = u, %o1 = v */
mov %o1, %g1
srl %o3, 0, %g4
mulx %g4, %g1, %o1
srl %o3, 0, %o4
mulx %o4, %g1, %o1
srlx %g1, 0x20, %g3
mulx %g3, %g4, %g5
sllx %g5, 0x20, %o5
srl %g1, 0, %g4
mulx %g3, %o4, %g7
sllx %g7, 0x20, %o5
srl %g1, 0, %o4
sub %o1, %o5, %o5
srlx %o5, 0x20, %o5
addcc %g5, %o5, %g5
addcc %g7, %o5, %g7
srlx %o3, 0x20, %o5
mulx %g4, %o5, %g4
mulx %o4, %o5, %o4
mulx %g3, %o5, %o5
sethi %hi(0x80000000), %g3
addcc %g5, %g4, %g5
srlx %g5, 0x20, %g5
addcc %g7, %o4, %g7
srlx %g7, 0x20, %g7
add %g3, %g3, %g3
movcc %xcc, %g0, %g3
addcc %o5, %g5, %o5
sllx %g4, 0x20, %g4
add %o1, %g4, %o1
addcc %o5, %g7, %o5
sllx %o4, 0x20, %o4
add %o1, %o4, %o1
add %o5, %g3, %g2
mulx %g1, %o2, %g1
add %g1, %g2, %g1

3
arch/x86/Kconfig
View File

@ -100,6 +100,7 @@ config X86
select GENERIC_STRNCPY_FROM_USER
select GENERIC_STRNLEN_USER
select GENERIC_TIME_VSYSCALL
select HARDLOCKUP_CHECK_TIMESTAMP if X86_64
select HAVE_ACPI_APEI if ACPI
select HAVE_ACPI_APEI_NMI if ACPI
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
@ -163,7 +164,7 @@ config X86
select HAVE_PCSPKR_PLATFORM
select HAVE_PERF_EVENTS
select HAVE_PERF_EVENTS_NMI
select HAVE_HARDLOCKUP_DETECTOR_PERF if HAVE_PERF_EVENTS_NMI
select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_REGS_AND_STACK_ACCESS_API

67
arch/x86/crypto/sha1_avx2_x86_64_asm.S
View File

@ -117,11 +117,10 @@
.set T1, REG_T1
.endm
#define K_BASE %r8
#define HASH_PTR %r9
#define BLOCKS_CTR %r8
#define BUFFER_PTR %r10
#define BUFFER_PTR2 %r13
#define BUFFER_END %r11
#define PRECALC_BUF %r14
#define WK_BUF %r15
@ -205,14 +204,14 @@
* blended AVX2 and ALU instruction scheduling
* 1 vector iteration per 8 rounds
*/
vmovdqu ((i * 2) + PRECALC_OFFSET)(BUFFER_PTR), W_TMP
vmovdqu (i * 2)(BUFFER_PTR), W_TMP
.elseif ((i & 7) == 1)
vinsertf128 $1, (((i-1) * 2)+PRECALC_OFFSET)(BUFFER_PTR2),\
vinsertf128 $1, ((i-1) * 2)(BUFFER_PTR2),\
WY_TMP, WY_TMP
.elseif ((i & 7) == 2)
vpshufb YMM_SHUFB_BSWAP, WY_TMP, WY
.elseif ((i & 7) == 4)
vpaddd K_XMM(K_BASE), WY, WY_TMP
vpaddd K_XMM + K_XMM_AR(%rip), WY, WY_TMP
.elseif ((i & 7) == 7)
vmovdqu WY_TMP, PRECALC_WK(i&~7)
@ -255,7 +254,7 @@
vpxor WY, WY_TMP, WY_TMP
.elseif ((i & 7) == 7)
vpxor WY_TMP2, WY_TMP, WY
vpaddd K_XMM(K_BASE), WY, WY_TMP
vpaddd K_XMM + K_XMM_AR(%rip), WY, WY_TMP
vmovdqu WY_TMP, PRECALC_WK(i&~7)
PRECALC_ROTATE_WY
@ -291,7 +290,7 @@
vpsrld $30, WY, WY
vpor WY, WY_TMP, WY
.elseif ((i & 7) == 7)
vpaddd K_XMM(K_BASE), WY, WY_TMP
vpaddd K_XMM + K_XMM_AR(%rip), WY, WY_TMP
vmovdqu WY_TMP, PRECALC_WK(i&~7)
PRECALC_ROTATE_WY
@ -446,6 +445,16 @@
.endm
/* Add constant only if (%2 > %3) condition met (uses RTA as temp)
* %1 + %2 >= %3 ? %4 : 0
*/
.macro ADD_IF_GE a, b, c, d
mov \a, RTA
add $\d, RTA
cmp $\c, \b
cmovge RTA, \a
.endm
/*
* macro implements 80 rounds of SHA-1, for multiple blocks with s/w pipelining
*/
@ -463,13 +472,16 @@
lea (2*4*80+32)(%rsp), WK_BUF
# Precalc WK for first 2 blocks
PRECALC_OFFSET = 0
ADD_IF_GE BUFFER_PTR2, BLOCKS_CTR, 2, 64
.set i, 0
.rept 160
PRECALC i
.set i, i + 1
.endr
PRECALC_OFFSET = 128
/* Go to next block if needed */
ADD_IF_GE BUFFER_PTR, BLOCKS_CTR, 3, 128
ADD_IF_GE BUFFER_PTR2, BLOCKS_CTR, 4, 128
xchg WK_BUF, PRECALC_BUF
.align 32
@ -479,8 +491,8 @@ _loop:
* we use K_BASE value as a signal of a last block,
* it is set below by: cmovae BUFFER_PTR, K_BASE
*/
cmp K_BASE, BUFFER_PTR
jne _begin
test BLOCKS_CTR, BLOCKS_CTR
jnz _begin
.align 32
jmp _end
.align 32
@ -512,10 +524,10 @@ _loop0:
.set j, j+2
.endr
add $(2*64), BUFFER_PTR /* move to next odd-64-byte block */
cmp BUFFER_END, BUFFER_PTR /* is current block the last one? */
cmovae K_BASE, BUFFER_PTR /* signal the last iteration smartly */
/* Update Counter */
sub $1, BLOCKS_CTR
/* Move to the next block only if needed*/
ADD_IF_GE BUFFER_PTR, BLOCKS_CTR, 4, 128
/*
* rounds
* 60,62,64,66,68
@ -532,8 +544,8 @@ _loop0:
UPDATE_HASH 12(HASH_PTR), D
UPDATE_HASH 16(HASH_PTR), E
cmp K_BASE, BUFFER_PTR /* is current block the last one? */
je _loop
test BLOCKS_CTR, BLOCKS_CTR
jz _loop
mov TB, B
@ -575,10 +587,10 @@ _loop2:
.set j, j+2
.endr
add $(2*64), BUFFER_PTR2 /* move to next even-64-byte block */
cmp BUFFER_END, BUFFER_PTR2 /* is current block the last one */
cmovae K_BASE, BUFFER_PTR /* signal the last iteration smartly */
/* update counter */
sub $1, BLOCKS_CTR
/* Move to the next block only if needed*/
ADD_IF_GE BUFFER_PTR2, BLOCKS_CTR, 4, 128
jmp _loop3
_loop3:
@ -641,19 +653,12 @@ _loop3:
avx2_zeroupper
lea K_XMM_AR(%rip), K_BASE
/* Setup initial values */
mov CTX, HASH_PTR
mov BUF, BUFFER_PTR
lea 64(BUF), BUFFER_PTR2
shl $6, CNT /* mul by 64 */
add BUF, CNT
add $64, CNT
mov CNT, BUFFER_END
cmp BUFFER_END, BUFFER_PTR2
cmovae K_BASE, BUFFER_PTR2
mov BUF, BUFFER_PTR2
mov CNT, BLOCKS_CTR
xmm_mov BSWAP_SHUFB_CTL(%rip), YMM_SHUFB_BSWAP

2
arch/x86/crypto/sha1_ssse3_glue.c
View File

@ -201,7 +201,7 @@ asmlinkage void sha1_transform_avx2(u32 *digest, const char *data,
static bool avx2_usable(void)
{
if (false && avx_usable() && boot_cpu_has(X86_FEATURE_AVX2)
if (avx_usable() && boot_cpu_has(X86_FEATURE_AVX2)
&& boot_cpu_has(X86_FEATURE_BMI1)
&& boot_cpu_has(X86_FEATURE_BMI2))
return true;

2
arch/x86/entry/entry_64.S
View File

@ -1211,6 +1211,8 @@ ENTRY(nmi)
* other IST entries.
*/
ASM_CLAC
/* Use %rdx as our temp variable throughout */
pushq %rdx

16
arch/x86/events/core.c
View File

@ -2114,7 +2114,7 @@ static void refresh_pce(void *ignored)
load_mm_cr4(this_cpu_read(cpu_tlbstate.loaded_mm));
}
static void x86_pmu_event_mapped(struct perf_event *event)
static void x86_pmu_event_mapped(struct perf_event *event, struct mm_struct *mm)
{
if (!(event->hw.flags & PERF_X86_EVENT_RDPMC_ALLOWED))
return;
@ -2129,22 +2129,20 @@ static void x86_pmu_event_mapped(struct perf_event *event)
* For now, this can't happen because all callers hold mmap_sem
* for write. If this changes, we'll need a different solution.
*/
lockdep_assert_held_exclusive(&current->mm->mmap_sem);
lockdep_assert_held_exclusive(&mm->mmap_sem);
if (atomic_inc_return(&current->mm->context.perf_rdpmc_allowed) == 1)
on_each_cpu_mask(mm_cpumask(current->mm), refresh_pce, NULL, 1);
if (atomic_inc_return(&mm->context.perf_rdpmc_allowed) == 1)
on_each_cpu_mask(mm_cpumask(mm), refresh_pce, NULL, 1);
}
static void x86_pmu_event_unmapped(struct perf_event *event)
static void x86_pmu_event_unmapped(struct perf_event *event, struct mm_struct *mm)
{
if (!current->mm)
return;
if (!(event->hw.flags & PERF_X86_EVENT_RDPMC_ALLOWED))
return;
if (atomic_dec_and_test(&current->mm->context.perf_rdpmc_allowed))
on_each_cpu_mask(mm_cpumask(current->mm), refresh_pce, NULL, 1);
if (atomic_dec_and_test(&mm->context.perf_rdpmc_allowed))
on_each_cpu_mask(mm_cpumask(mm), refresh_pce, NULL, 1);
}
static int x86_pmu_event_idx(struct perf_event *event)

2
arch/x86/events/intel/bts.c
View File

@ -69,7 +69,7 @@ struct bts_buffer {
struct bts_phys buf[0];
};
struct pmu bts_pmu;
static struct pmu bts_pmu;
static size_t buf_size(struct page *page)
{

2
arch/x86/events/intel/p4.c
View File

@ -587,7 +587,7 @@ static __initconst const u64 p4_hw_cache_event_ids
* P4_CONFIG_ALIASABLE or bits for P4_PEBS_METRIC, they are
* either up to date automatically or not applicable at all.
*/
struct p4_event_alias {
static struct p4_event_alias {
u64 original;
u64 alternative;
} p4_event_aliases[] = {

2
arch/x86/events/intel/rapl.c
View File

@ -559,7 +559,7 @@ static struct attribute_group rapl_pmu_format_group = {
.attrs = rapl_formats_attr,
};
const struct attribute_group *rapl_attr_groups[] = {
static const struct attribute_group *rapl_attr_groups[] = {
&rapl_pmu_attr_group,
&rapl_pmu_format_group,
&rapl_pmu_events_group,

2
arch/x86/events/intel/uncore.c
View File

@ -721,7 +721,7 @@ static struct attribute *uncore_pmu_attrs[] = {
NULL,
};
static struct attribute_group uncore_pmu_attr_group = {
static const struct attribute_group uncore_pmu_attr_group = {
.attrs = uncore_pmu_attrs,
};

12
arch/x86/events/intel/uncore_nhmex.c
View File

@ -272,7 +272,7 @@ static struct attribute *nhmex_uncore_ubox_formats_attr[] = {
NULL,
};
static struct attribute_group nhmex_uncore_ubox_format_group = {
static const struct attribute_group nhmex_uncore_ubox_format_group = {
.name = "format",
.attrs = nhmex_uncore_ubox_formats_attr,
};
@ -299,7 +299,7 @@ static struct attribute *nhmex_uncore_cbox_formats_attr[] = {
NULL,
};
static struct attribute_group nhmex_uncore_cbox_format_group = {
static const struct attribute_group nhmex_uncore_cbox_format_group = {
.name = "format",
.attrs = nhmex_uncore_cbox_formats_attr,
};
@ -407,7 +407,7 @@ static struct attribute *nhmex_uncore_bbox_formats_attr[] = {
NULL,
};
static struct attribute_group nhmex_uncore_bbox_format_group = {
static const struct attribute_group nhmex_uncore_bbox_format_group = {
.name = "format",
.attrs = nhmex_uncore_bbox_formats_attr,
};
@ -484,7 +484,7 @@ static struct attribute *nhmex_uncore_sbox_formats_attr[] = {
NULL,
};
static struct attribute_group nhmex_uncore_sbox_format_group = {
static const struct attribute_group nhmex_uncore_sbox_format_group = {
.name = "format",
.attrs = nhmex_uncore_sbox_formats_attr,
};
@ -898,7 +898,7 @@ static struct attribute *nhmex_uncore_mbox_formats_attr[] = {
NULL,
};
static struct attribute_group nhmex_uncore_mbox_format_group = {
static const struct attribute_group nhmex_uncore_mbox_format_group = {
.name = "format",
.attrs = nhmex_uncore_mbox_formats_attr,
};
@ -1163,7 +1163,7 @@ static struct attribute *nhmex_uncore_rbox_formats_attr[] = {
NULL,
};
static struct attribute_group nhmex_uncore_rbox_format_group = {
static const struct attribute_group nhmex_uncore_rbox_format_group = {
.name = "format",
.attrs = nhmex_uncore_rbox_formats_attr,
};

6
arch/x86/events/intel/uncore_snb.c
View File

@ -130,7 +130,7 @@ static struct attribute *snb_uncore_formats_attr[] = {
NULL,
};
static struct attribute_group snb_uncore_format_group = {
static const struct attribute_group snb_uncore_format_group = {
.name = "format",
.attrs = snb_uncore_formats_attr,
};
@ -289,7 +289,7 @@ static struct attribute *snb_uncore_imc_formats_attr[] = {
NULL,
};
static struct attribute_group snb_uncore_imc_format_group = {
static const struct attribute_group snb_uncore_imc_format_group = {
.name = "format",
.attrs = snb_uncore_imc_formats_attr,
};
@ -769,7 +769,7 @@ static struct attribute *nhm_uncore_formats_attr[] = {
NULL,
};
static struct attribute_group nhm_uncore_format_group = {
static const struct attribute_group nhm_uncore_format_group = {
.name = "format",
.attrs = nhm_uncore_formats_attr,
};

42
arch/x86/events/intel/uncore_snbep.c
View File

@ -602,27 +602,27 @@ static struct uncore_event_desc snbep_uncore_qpi_events[] = {
{ /* end: all zeroes */ },
};
static struct attribute_group snbep_uncore_format_group = {
static const struct attribute_group snbep_uncore_format_group = {
.name = "format",
.attrs = snbep_uncore_formats_attr,
};
static struct attribute_group snbep_uncore_ubox_format_group = {
static const struct attribute_group snbep_uncore_ubox_format_group = {
.name = "format",
.attrs = snbep_uncore_ubox_formats_attr,
};
static struct attribute_group snbep_uncore_cbox_format_group = {
static const struct attribute_group snbep_uncore_cbox_format_group = {
.name = "format",
.attrs = snbep_uncore_cbox_formats_attr,
};
static struct attribute_group snbep_uncore_pcu_format_group = {
static const struct attribute_group snbep_uncore_pcu_format_group = {
.name = "format",
.attrs = snbep_uncore_pcu_formats_attr,
};
static struct attribute_group snbep_uncore_qpi_format_group = {
static const struct attribute_group snbep_uncore_qpi_format_group = {
.name = "format",
.attrs = snbep_uncore_qpi_formats_attr,
};
@ -1431,27 +1431,27 @@ static struct attribute *ivbep_uncore_qpi_formats_attr[] = {
NULL,
};
static struct attribute_group ivbep_uncore_format_group = {
static const struct attribute_group ivbep_uncore_format_group = {
.name = "format",
.attrs = ivbep_uncore_formats_attr,
};
static struct attribute_group ivbep_uncore_ubox_format_group = {
static const struct attribute_group ivbep_uncore_ubox_format_group = {
.name = "format",
.attrs = ivbep_uncore_ubox_formats_attr,
};
static struct attribute_group ivbep_uncore_cbox_format_group = {
static const struct attribute_group ivbep_uncore_cbox_format_group = {
.name = "format",
.attrs = ivbep_uncore_cbox_formats_attr,
};
static struct attribute_group ivbep_uncore_pcu_format_group = {
static const struct attribute_group ivbep_uncore_pcu_format_group = {
.name = "format",
.attrs = ivbep_uncore_pcu_formats_attr,
};
static struct attribute_group ivbep_uncore_qpi_format_group = {
static const struct attribute_group ivbep_uncore_qpi_format_group = {
.name = "format",
.attrs = ivbep_uncore_qpi_formats_attr,
};
@ -1887,7 +1887,7 @@ static struct attribute *knl_uncore_ubox_formats_attr[] = {
NULL,
};
static struct attribute_group knl_uncore_ubox_format_group = {
static const struct attribute_group knl_uncore_ubox_format_group = {
.name = "format",
.attrs = knl_uncore_ubox_formats_attr,
};
@ -1927,7 +1927,7 @@ static struct attribute *knl_uncore_cha_formats_attr[] = {
NULL,
};
static struct attribute_group knl_uncore_cha_format_group = {
static const struct attribute_group knl_uncore_cha_format_group = {
.name = "format",
.attrs = knl_uncore_cha_formats_attr,
};
@ -2037,7 +2037,7 @@ static struct attribute *knl_uncore_pcu_formats_attr[] = {
NULL,
};
static struct attribute_group knl_uncore_pcu_format_group = {
static const struct attribute_group knl_uncore_pcu_format_group = {
.name = "format",
.attrs = knl_uncore_pcu_formats_attr,
};
@ -2187,7 +2187,7 @@ static struct attribute *knl_uncore_irp_formats_attr[] = {
NULL,
};
static struct attribute_group knl_uncore_irp_format_group = {
static const struct attribute_group knl_uncore_irp_format_group = {
.name = "format",
.attrs = knl_uncore_irp_formats_attr,
};
@ -2385,7 +2385,7 @@ static struct attribute *hswep_uncore_ubox_formats_attr[] = {
NULL,
};
static struct attribute_group hswep_uncore_ubox_format_group = {
static const struct attribute_group hswep_uncore_ubox_format_group = {
.name = "format",
.attrs = hswep_uncore_ubox_formats_attr,
};
@ -2439,7 +2439,7 @@ static struct attribute *hswep_uncore_cbox_formats_attr[] = {
NULL,
};
static struct attribute_group hswep_uncore_cbox_format_group = {
static const struct attribute_group hswep_uncore_cbox_format_group = {
.name = "format",
.attrs = hswep_uncore_cbox_formats_attr,
};
@ -2621,7 +2621,7 @@ static struct attribute *hswep_uncore_sbox_formats_attr[] = {
NULL,
};
static struct attribute_group hswep_uncore_sbox_format_group = {
static const struct attribute_group hswep_uncore_sbox_format_group = {
.name = "format",
.attrs = hswep_uncore_sbox_formats_attr,
};
@ -3314,7 +3314,7 @@ static struct attribute *skx_uncore_cha_formats_attr[] = {
NULL,
};
static struct attribute_group skx_uncore_chabox_format_group = {
static const struct attribute_group skx_uncore_chabox_format_group = {
.name = "format",
.attrs = skx_uncore_cha_formats_attr,
};
@ -3427,7 +3427,7 @@ static struct attribute *skx_uncore_iio_formats_attr[] = {
NULL,
};
static struct attribute_group skx_uncore_iio_format_group = {
static const struct attribute_group skx_uncore_iio_format_group = {
.name = "format",
.attrs = skx_uncore_iio_formats_attr,
};
@ -3484,7 +3484,7 @@ static struct attribute *skx_uncore_formats_attr[] = {
NULL,
};
static struct attribute_group skx_uncore_format_group = {
static const struct attribute_group skx_uncore_format_group = {
.name = "format",
.attrs = skx_uncore_formats_attr,
};
@ -3605,7 +3605,7 @@ static struct attribute *skx_upi_uncore_formats_attr[] = {
NULL,
};
static struct attribute_group skx_upi_uncore_format_group = {
static const struct attribute_group skx_upi_uncore_format_group = {
.name = "format",
.attrs = skx_upi_uncore_formats_attr,
};

2
arch/x86/include/asm/cpufeatures.h
View File

@ -286,7 +286,7 @@
#define X86_FEATURE_PAUSEFILTER (15*32+10) /* filtered pause intercept */
#define X86_FEATURE_PFTHRESHOLD (15*32+12) /* pause filter threshold */
#define X86_FEATURE_AVIC (15*32+13) /* Virtual Interrupt Controller */
#define X86_FEATURE_VIRTUAL_VMLOAD_VMSAVE (15*32+15) /* Virtual VMLOAD VMSAVE */
#define X86_FEATURE_V_VMSAVE_VMLOAD (15*32+15) /* Virtual VMSAVE VMLOAD */
/* Intel-defined CPU features, CPUID level 0x00000007:0 (ecx), word 16 */
#define X86_FEATURE_AVX512VBMI (16*32+ 1) /* AVX512 Vector Bit Manipulation instructions*/

4
arch/x86/include/asm/elf.h
View File

@ -247,11 +247,11 @@ extern int force_personality32;
/*
* This is the base location for PIE (ET_DYN with INTERP) loads. On
* 64-bit, this is raised to 4GB to leave the entire 32-bit address
* 64-bit, this is above 4GB to leave the entire 32-bit address
* space open for things that want to use the area for 32-bit pointers.
*/
#define ELF_ET_DYN_BASE (mmap_is_ia32() ? 0x000400000UL : \
0x100000000UL)
(TASK_SIZE / 3 * 2))
/* This yields a mask that user programs can use to figure out what
instruction set this CPU supports. This could be done in user space,

6
arch/x86/include/asm/fpu/internal.h
View File

@ -450,10 +450,10 @@ static inline int copy_fpregs_to_fpstate(struct fpu *fpu)
return 0;
}
static inline void __copy_kernel_to_fpregs(union fpregs_state *fpstate)
static inline void __copy_kernel_to_fpregs(union fpregs_state *fpstate, u64 mask)
{
if (use_xsave()) {
copy_kernel_to_xregs(&fpstate->xsave, -1);
copy_kernel_to_xregs(&fpstate->xsave, mask);
} else {
if (use_fxsr())
copy_kernel_to_fxregs(&fpstate->fxsave);
@ -477,7 +477,7 @@ static inline void copy_kernel_to_fpregs(union fpregs_state *fpstate)
: : [addr] "m" (fpstate));
}
__copy_kernel_to_fpregs(fpstate);
__copy_kernel_to_fpregs(fpstate, -1);
}
extern int copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);

1
arch/x86/include/asm/kvm_host.h
View File

@ -492,6 +492,7 @@ struct kvm_vcpu_arch {
unsigned long cr4;
unsigned long cr4_guest_owned_bits;
unsigned long cr8;
u32 pkru;
u32 hflags;
u64 efer;
u64 apic_base;

4
arch/x86/include/asm/mmu_context.h
View File

@ -140,9 +140,7 @@ static inline int init_new_context(struct task_struct *tsk,
mm->context.execute_only_pkey = -1;
}
#endif
init_new_context_ldt(tsk, mm);
return 0;
return init_new_context_ldt(tsk, mm);
}
static inline void destroy_context(struct mm_struct *mm)
{

3
arch/x86/kernel/cpu/aperfmperf.c
View File

@ -40,13 +40,16 @@ static void aperfmperf_snapshot_khz(void *dummy)
struct aperfmperf_sample *s = this_cpu_ptr(&samples);
ktime_t now = ktime_get();
s64 time_delta = ktime_ms_delta(now, s->time);
unsigned long flags;
/* Don't bother re-computing within the cache threshold time. */
if (time_delta < APERFMPERF_CACHE_THRESHOLD_MS)
return;
local_irq_save(flags);
rdmsrl(MSR_IA32_APERF, aperf);
rdmsrl(MSR_IA32_MPERF, mperf);
local_irq_restore(flags);
aperf_delta = aperf - s->aperf;
mperf_delta = mperf - s->mperf;

2
arch/x86/kernel/cpu/mcheck/therm_throt.c
View File

@ -122,7 +122,7 @@ static struct attribute *thermal_throttle_attrs[] = {
NULL
};
static struct attribute_group thermal_attr_group = {
static const struct attribute_group thermal_attr_group = {
.attrs = thermal_throttle_attrs,
.name = "thermal_throttle"
};

4
arch/x86/kernel/cpu/microcode/core.c
View File

@ -561,7 +561,7 @@ static struct attribute *mc_default_attrs[] = {
NULL
};
static struct attribute_group mc_attr_group = {
static const struct attribute_group mc_attr_group = {
.attrs = mc_default_attrs,
.name = "microcode",
};
@ -707,7 +707,7 @@ static struct attribute *cpu_root_microcode_attrs[] = {
NULL
};
static struct attribute_group cpu_root_microcode_group = {
static const struct attribute_group cpu_root_microcode_group = {
.name = "microcode",
.attrs = cpu_root_microcode_attrs,
};

18
arch/x86/kernel/cpu/mtrr/main.c
View File

@ -237,6 +237,18 @@ set_mtrr(unsigned int reg, unsigned long base, unsigned long size, mtrr_type typ
stop_machine(mtrr_rendezvous_handler, &data, cpu_online_mask);
}
static void set_mtrr_cpuslocked(unsigned int reg, unsigned long base,
unsigned long size, mtrr_type type)
{
struct set_mtrr_data data = { .smp_reg = reg,
.smp_base = base,
.smp_size = size,
.smp_type = type
};
stop_machine_cpuslocked(mtrr_rendezvous_handler, &data, cpu_online_mask);
}
static void set_mtrr_from_inactive_cpu(unsigned int reg, unsigned long base,
unsigned long size, mtrr_type type)
{
@ -370,7 +382,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
/* Search for an empty MTRR */
i = mtrr_if->get_free_region(base, size, replace);
if (i >= 0) {
set_mtrr(i, base, size, type);
set_mtrr_cpuslocked(i, base, size, type);
if (likely(replace < 0)) {
mtrr_usage_table[i] = 1;
} else {
@ -378,7 +390,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
if (increment)
mtrr_usage_table[i]++;
if (unlikely(replace != i)) {
set_mtrr(replace, 0, 0, 0);
set_mtrr_cpuslocked(replace, 0, 0, 0);
mtrr_usage_table[replace] = 0;
}
}
@ -506,7 +518,7 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
goto out;
}
if (--mtrr_usage_table[reg] < 1)
set_mtrr(reg, 0, 0, 0);
set_mtrr_cpuslocked(reg, 0, 0, 0);
error = reg;
out:
mutex_unlock(&mtrr_mutex);

7
arch/x86/kernel/head64.c
View File

@ -53,6 +53,7 @@ void __head __startup_64(unsigned long physaddr)
pudval_t *pud;
pmdval_t *pmd, pmd_entry;
int i;
unsigned int *next_pgt_ptr;
/* Is the address too large? */
if (physaddr >> MAX_PHYSMEM_BITS)
@ -91,9 +92,9 @@ void __head __startup_64(unsigned long physaddr)
* creates a bunch of nonsense entries but that is fine --
* it avoids problems around wraparound.
*/
pud = fixup_pointer(early_dynamic_pgts[next_early_pgt++], physaddr);
pmd = fixup_pointer(early_dynamic_pgts[next_early_pgt++], physaddr);
next_pgt_ptr = fixup_pointer(&next_early_pgt, physaddr);
pud = fixup_pointer(early_dynamic_pgts[(*next_pgt_ptr)++], physaddr);
pmd = fixup_pointer(early_dynamic_pgts[(*next_pgt_ptr)++], physaddr);
if (IS_ENABLED(CONFIG_X86_5LEVEL)) {
p4d = fixup_pointer(early_dynamic_pgts[next_early_pgt++], physaddr);

4
arch/x86/kernel/ksysfs.c
View File

@ -55,7 +55,7 @@ static struct bin_attribute *boot_params_data_attrs[] = {
NULL,
};
static struct attribute_group boot_params_attr_group = {
static const struct attribute_group boot_params_attr_group = {
.attrs = boot_params_version_attrs,
.bin_attrs = boot_params_data_attrs,
};
@ -202,7 +202,7 @@ static struct bin_attribute *setup_data_data_attrs[] = {
NULL,
};
static struct attribute_group setup_data_attr_group = {
static const struct attribute_group setup_data_attr_group = {
.attrs = setup_data_type_attrs,
.bin_attrs = setup_data_data_attrs,
};

30
arch/x86/kernel/smpboot.c
View File

@ -971,7 +971,8 @@ void common_cpu_up(unsigned int cpu, struct task_struct *idle)
* Returns zero if CPU booted OK, else error code from
* ->wakeup_secondary_cpu.
*/
static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle,
int *cpu0_nmi_registered)
{
volatile u32 *trampoline_status =
(volatile u32 *) __va(real_mode_header->trampoline_status);
@ -979,7 +980,6 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
unsigned long start_ip = real_mode_header->trampoline_start;
unsigned long boot_error = 0;
int cpu0_nmi_registered = 0;
unsigned long timeout;
idle->thread.sp = (unsigned long)task_pt_regs(idle);
@ -1035,7 +1035,7 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
boot_error = apic->wakeup_secondary_cpu(apicid, start_ip);
else
boot_error = wakeup_cpu_via_init_nmi(cpu, start_ip, apicid,
&cpu0_nmi_registered);
cpu0_nmi_registered);
if (!boot_error) {
/*
@ -1080,12 +1080,6 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
*/
smpboot_restore_warm_reset_vector();
}
/*
* Clean up the nmi handler. Do this after the callin and callout sync
* to avoid impact of possible long unregister time.
*/
if (cpu0_nmi_registered)
unregister_nmi_handler(NMI_LOCAL, "wake_cpu0");
return boot_error;
}
@ -1093,8 +1087,9 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
{
int apicid = apic->cpu_present_to_apicid(cpu);
int cpu0_nmi_registered = 0;
unsigned long flags;
int err;
int err, ret = 0;
WARN_ON(irqs_disabled());
@ -1131,10 +1126,11 @@ int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
common_cpu_up(cpu, tidle);
err = do_boot_cpu(apicid, cpu, tidle);
err = do_boot_cpu(apicid, cpu, tidle, &cpu0_nmi_registered);
if (err) {
pr_err("do_boot_cpu failed(%d) to wakeup CPU#%u\n", err, cpu);
return -EIO;
ret = -EIO;
goto unreg_nmi;
}
/*
@ -1150,7 +1146,15 @@ int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
touch_nmi_watchdog();
}
return 0;
unreg_nmi:
/*
* Clean up the nmi handler. Do this after the callin and callout sync
* to avoid impact of possible long unregister time.
*/
if (cpu0_nmi_registered)
unregister_nmi_handler(NMI_LOCAL, "wake_cpu0");
return ret;
}
/**

2
arch/x86/kvm/cpuid.c
View File

@ -469,7 +469,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
entry->ecx &= kvm_cpuid_7_0_ecx_x86_features;
cpuid_mask(&entry->ecx, CPUID_7_ECX);
/* PKU is not yet implemented for shadow paging. */
if (!tdp_enabled)
if (!tdp_enabled || !boot_cpu_has(X86_FEATURE_OSPKE))
entry->ecx &= ~F(PKU);
entry->edx &= kvm_cpuid_7_0_edx_x86_features;
entry->edx &= get_scattered_cpuid_leaf(7, 0, CPUID_EDX);

5
arch/x86/kvm/kvm_cache_regs.h
View File

@ -84,11 +84,6 @@ static inline u64 kvm_read_edx_eax(struct kvm_vcpu *vcpu)
| ((u64)(kvm_register_read(vcpu, VCPU_REGS_RDX) & -1u) << 32);
}
static inline u32 kvm_read_pkru(struct kvm_vcpu *vcpu)
{
return kvm_x86_ops->get_pkru(vcpu);
}
static inline void enter_guest_mode(struct kvm_vcpu *vcpu)
{
vcpu->arch.hflags |= HF_GUEST_MASK;

2
arch/x86/kvm/mmu.h
View File

@ -185,7 +185,7 @@ static inline u8 permission_fault(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
* index of the protection domain, so pte_pkey * 2 is
* is the index of the first bit for the domain.
*/
pkru_bits = (kvm_read_pkru(vcpu) >> (pte_pkey * 2)) & 3;
pkru_bits = (vcpu->arch.pkru >> (pte_pkey * 2)) & 3;
/* clear present bit, replace PFEC.RSVD with ACC_USER_MASK. */
offset = (pfec & ~1) +

9
arch/x86/kvm/svm.c
View File

@ -1100,7 +1100,7 @@ static __init int svm_hardware_setup(void)
if (vls) {
if (!npt_enabled ||
!boot_cpu_has(X86_FEATURE_VIRTUAL_VMLOAD_VMSAVE) ||
!boot_cpu_has(X86_FEATURE_V_VMSAVE_VMLOAD) ||
!IS_ENABLED(CONFIG_X86_64)) {
vls = false;
} else {
@ -1777,11 +1777,6 @@ static void svm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
to_svm(vcpu)->vmcb->save.rflags = rflags;
}
static u32 svm_get_pkru(struct kvm_vcpu *vcpu)
{
return 0;
}
static void svm_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
{
switch (reg) {
@ -5413,8 +5408,6 @@ static struct kvm_x86_ops svm_x86_ops __ro_after_init = {
.get_rflags = svm_get_rflags,
.set_rflags = svm_set_rflags,
.get_pkru = svm_get_pkru,
.tlb_flush = svm_flush_tlb,
.run = svm_vcpu_run,

25
arch/x86/kvm/vmx.c
View File

@ -636,8 +636,6 @@ struct vcpu_vmx {
u64 current_tsc_ratio;
bool guest_pkru_valid;
u32 guest_pkru;
u32 host_pkru;
/*
@ -2383,11 +2381,6 @@ static void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
to_vmx(vcpu)->emulation_required = emulation_required(vcpu);
}
static u32 vmx_get_pkru(struct kvm_vcpu *vcpu)
{
return to_vmx(vcpu)->guest_pkru;
}
static u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu)
{
u32 interruptibility = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
@ -9020,8 +9013,10 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
vmx_set_interrupt_shadow(vcpu, 0);
if (vmx->guest_pkru_valid)
__write_pkru(vmx->guest_pkru);
if (static_cpu_has(X86_FEATURE_PKU) &&
kvm_read_cr4_bits(vcpu, X86_CR4_PKE) &&
vcpu->arch.pkru != vmx->host_pkru)
__write_pkru(vcpu->arch.pkru);
atomic_switch_perf_msrs(vmx);
debugctlmsr = get_debugctlmsr();
@ -9169,13 +9164,11 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
* back on host, so it is safe to read guest PKRU from current
* XSAVE.
*/
if (boot_cpu_has(X86_FEATURE_OSPKE)) {
vmx->guest_pkru = __read_pkru();
if (vmx->guest_pkru != vmx->host_pkru) {
vmx->guest_pkru_valid = true;
if (static_cpu_has(X86_FEATURE_PKU) &&
kvm_read_cr4_bits(vcpu, X86_CR4_PKE)) {
vcpu->arch.pkru = __read_pkru();
if (vcpu->arch.pkru != vmx->host_pkru)
__write_pkru(vmx->host_pkru);
} else
vmx->guest_pkru_valid = false;
}
/*
@ -11682,8 +11675,6 @@ static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
.get_rflags = vmx_get_rflags,
.set_rflags = vmx_set_rflags,
.get_pkru = vmx_get_pkru,
.tlb_flush = vmx_flush_tlb,
.run = vmx_vcpu_run,

17
arch/x86/kvm/x86.c
View File

@ -3245,7 +3245,12 @@ static void fill_xsave(u8 *dest, struct kvm_vcpu *vcpu)
u32 size, offset, ecx, edx;
cpuid_count(XSTATE_CPUID, index,
&size, &offset, &ecx, &edx);
memcpy(dest + offset, src, size);
if (feature == XFEATURE_MASK_PKRU)
memcpy(dest + offset, &vcpu->arch.pkru,
sizeof(vcpu->arch.pkru));
else
memcpy(dest + offset, src, size);
}
valid -= feature;
@ -3283,7 +3288,11 @@ static void load_xsave(struct kvm_vcpu *vcpu, u8 *src)
u32 size, offset, ecx, edx;
cpuid_count(XSTATE_CPUID, index,
&size, &offset, &ecx, &edx);
memcpy(dest, src + offset, size);
if (feature == XFEATURE_MASK_PKRU)
memcpy(&vcpu->arch.pkru, src + offset,
sizeof(vcpu->arch.pkru));
else
memcpy(dest, src + offset, size);
}
valid -= feature;
@ -7633,7 +7642,9 @@ void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
*/
vcpu->guest_fpu_loaded = 1;
__kernel_fpu_begin();
__copy_kernel_to_fpregs(&vcpu->arch.guest_fpu.state);
/* PKRU is separately restored in kvm_x86_ops->run. */
__copy_kernel_to_fpregs(&vcpu->arch.guest_fpu.state,
~XFEATURE_MASK_PKRU);
trace_kvm_fpu(1);
}

7
arch/x86/mm/mmap.c
View File

@ -50,8 +50,7 @@ unsigned long tasksize_64bit(void)
static unsigned long stack_maxrandom_size(unsigned long task_size)
{
unsigned long max = 0;
if ((current->flags & PF_RANDOMIZE) &&
!(current->personality & ADDR_NO_RANDOMIZE)) {
if (current->flags & PF_RANDOMIZE) {
max = (-1UL) & __STACK_RND_MASK(task_size == tasksize_32bit());
max <<= PAGE_SHIFT;
}
@ -79,13 +78,13 @@ static int mmap_is_legacy(void)
static unsigned long arch_rnd(unsigned int rndbits)
{
if (!(current->flags & PF_RANDOMIZE))
return 0;
return (get_random_long() & ((1UL << rndbits) - 1)) << PAGE_SHIFT;
}
unsigned long arch_mmap_rnd(void)
{
if (!(current->flags & PF_RANDOMIZE))
return 0;
return arch_rnd(mmap_is_ia32() ? mmap32_rnd_bits : mmap64_rnd_bits);
}

4
arch/x86/platform/uv/tlb_uv.c
View File

@ -26,7 +26,7 @@
static struct bau_operations ops __ro_after_init;
/* timeouts in nanoseconds (indexed by UVH_AGING_PRESCALE_SEL urgency7 30:28) */
static int timeout_base_ns[] = {
static const int timeout_base_ns[] = {
20,
160,
1280,
@ -1216,7 +1216,7 @@ static struct bau_pq_entry *find_another_by_swack(struct bau_pq_entry *msg,
* set a bit in the UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE register.
* Such a message must be ignored.
*/
void process_uv2_message(struct msg_desc *mdp, struct bau_control *bcp)
static void process_uv2_message(struct msg_desc *mdp, struct bau_control *bcp)
{
unsigned long mmr_image;
unsigned char swack_vec;

3
block/blk-mq-debugfs.c
View File

@ -75,6 +75,8 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(STATS),
QUEUE_FLAG_NAME(POLL_STATS),
QUEUE_FLAG_NAME(REGISTERED),
QUEUE_FLAG_NAME(SCSI_PASSTHROUGH),
QUEUE_FLAG_NAME(QUIESCED),
};
#undef QUEUE_FLAG_NAME
@ -265,6 +267,7 @@ static const char *const cmd_flag_name[] = {
CMD_FLAG_NAME(RAHEAD),
CMD_FLAG_NAME(BACKGROUND),
CMD_FLAG_NAME(NOUNMAP),
CMD_FLAG_NAME(NOWAIT),
};
#undef CMD_FLAG_NAME

8
block/blk-mq-pci.c
View File

@ -36,12 +36,18 @@ int blk_mq_pci_map_queues(struct blk_mq_tag_set *set, struct pci_dev *pdev)
for (queue = 0; queue < set->nr_hw_queues; queue++) {
mask = pci_irq_get_affinity(pdev, queue);
if (!mask)
return -EINVAL;
goto fallback;
for_each_cpu(cpu, mask)
set->mq_map[cpu] = queue;
}
return 0;
fallback:
WARN_ON_ONCE(set->nr_hw_queues > 1);
for_each_possible_cpu(cpu)
set->mq_map[cpu] = 0;
return 0;
}
EXPORT_SYMBOL_GPL(blk_mq_pci_map_queues);

5
block/blk-mq.c
View File

@ -360,12 +360,12 @@ struct request *blk_mq_alloc_request(struct request_queue *q, unsigned int op,
return ERR_PTR(ret);
rq = blk_mq_get_request(q, NULL, op, &alloc_data);
blk_queue_exit(q);
if (!rq)
return ERR_PTR(-EWOULDBLOCK);
blk_mq_put_ctx(alloc_data.ctx);
blk_queue_exit(q);
rq->__data_len = 0;
rq->__sector = (sector_t) -1;
@ -411,12 +411,11 @@ struct request *blk_mq_alloc_request_hctx(struct request_queue *q,
alloc_data.ctx = __blk_mq_get_ctx(q, cpu);
rq = blk_mq_get_request(q, NULL, op, &alloc_data);
blk_queue_exit(q);
if (!rq)
return ERR_PTR(-EWOULDBLOCK);
blk_queue_exit(q);
return rq;
}
EXPORT_SYMBOL_GPL(blk_mq_alloc_request_hctx);

18
block/blk-throttle.c
View File

@ -382,6 +382,14 @@ static unsigned int tg_iops_limit(struct throtl_grp *tg, int rw)
} \
} while (0)
static inline unsigned int throtl_bio_data_size(struct bio *bio)
{
/* assume it's one sector */
if (unlikely(bio_op(bio) == REQ_OP_DISCARD))
return 512;
return bio->bi_iter.bi_size;
}
static void throtl_qnode_init(struct throtl_qnode *qn, struct throtl_grp *tg)
{
INIT_LIST_HEAD(&qn->node);
@ -934,6 +942,7 @@ static bool tg_with_in_bps_limit(struct throtl_grp *tg, struct bio *bio,
bool rw = bio_data_dir(bio);
u64 bytes_allowed, extra_bytes, tmp;
unsigned long jiffy_elapsed, jiffy_wait, jiffy_elapsed_rnd;
unsigned int bio_size = throtl_bio_data_size(bio);
jiffy_elapsed = jiffy_elapsed_rnd = jiffies - tg->slice_start[rw];
@ -947,14 +956,14 @@ static bool tg_with_in_bps_limit(struct throtl_grp *tg, struct bio *bio,
do_div(tmp, HZ);
bytes_allowed = tmp;
if (tg->bytes_disp[rw] + bio->bi_iter.bi_size <= bytes_allowed) {
if (tg->bytes_disp[rw] + bio_size <= bytes_allowed) {
if (wait)
*wait = 0;
return true;
}
/* Calc approx time to dispatch */
extra_bytes = tg->bytes_disp[rw] + bio->bi_iter.bi_size - bytes_allowed;
extra_bytes = tg->bytes_disp[rw] + bio_size - bytes_allowed;
jiffy_wait = div64_u64(extra_bytes * HZ, tg_bps_limit(tg, rw));
if (!jiffy_wait)
@ -1034,11 +1043,12 @@ static bool tg_may_dispatch(struct throtl_grp *tg, struct bio *bio,
static void throtl_charge_bio(struct throtl_grp *tg, struct bio *bio)
{
bool rw = bio_data_dir(bio);
unsigned int bio_size = throtl_bio_data_size(bio);
/* Charge the bio to the group */
tg->bytes_disp[rw] += bio->bi_iter.bi_size;
tg->bytes_disp[rw] += bio_size;
tg->io_disp[rw]++;
tg->last_bytes_disp[rw] += bio->bi_iter.bi_size;
tg->last_bytes_disp[rw] += bio_size;
tg->last_io_disp[rw]++;
/*

74
block/bsg-lib.c
View File

@ -29,26 +29,25 @@
#include <scsi/scsi_cmnd.h>
/**
* bsg_destroy_job - routine to teardown/delete a bsg job
* bsg_teardown_job - routine to teardown a bsg job
* @job: bsg_job that is to be torn down
*/
static void bsg_destroy_job(struct kref *kref)
static void bsg_teardown_job(struct kref *kref)
{
struct bsg_job *job = container_of(kref, struct bsg_job, kref);
struct request *rq = job->req;
blk_end_request_all(rq, BLK_STS_OK);
put_device(job->dev); /* release reference for the request */
kfree(job->request_payload.sg_list);
kfree(job->reply_payload.sg_list);
kfree(job);
blk_end_request_all(rq, BLK_STS_OK);
}
void bsg_job_put(struct bsg_job *job)
{
kref_put(&job->kref, bsg_destroy_job);
kref_put(&job->kref, bsg_teardown_job);
}
EXPORT_SYMBOL_GPL(bsg_job_put);
@ -100,7 +99,7 @@ EXPORT_SYMBOL_GPL(bsg_job_done);
*/
static void bsg_softirq_done(struct request *rq)
{
struct bsg_job *job = rq->special;
struct bsg_job *job = blk_mq_rq_to_pdu(rq);
bsg_job_put(job);
}
@ -122,33 +121,20 @@ static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req)
}
/**
* bsg_create_job - create the bsg_job structure for the bsg request
* bsg_prepare_job - create the bsg_job structure for the bsg request
* @dev: device that is being sent the bsg request
* @req: BSG request that needs a job structure
*/
static int bsg_create_job(struct device *dev, struct request *req)
static int bsg_prepare_job(struct device *dev, struct request *req)
{
struct request *rsp = req->next_rq;
struct request_queue *q = req->q;
struct scsi_request *rq = scsi_req(req);
struct bsg_job *job;
struct bsg_job *job = blk_mq_rq_to_pdu(req);
int ret;
BUG_ON(req->special);
job = kzalloc(sizeof(struct bsg_job) + q->bsg_job_size, GFP_KERNEL);
if (!job)
return -ENOMEM;
req->special = job;
job->req = req;
if (q->bsg_job_size)
job->dd_data = (void *)&job[1];
job->request = rq->cmd;
job->request_len = rq->cmd_len;
job->reply = rq->sense;
job->reply_len = SCSI_SENSE_BUFFERSIZE; /* Size of sense buffer
* allocated */
if (req->bio) {
ret = bsg_map_buffer(&job->request_payload, req);
if (ret)
@ -187,7 +173,6 @@ static void bsg_request_fn(struct request_queue *q)
{
struct device *dev = q->queuedata;
struct request *req;
struct bsg_job *job;
int ret;
if (!get_device(dev))
@ -199,7 +184,7 @@ static void bsg_request_fn(struct request_queue *q)
break;
spin_unlock_irq(q->queue_lock);
ret = bsg_create_job(dev, req);
ret = bsg_prepare_job(dev, req);
if (ret) {
scsi_req(req)->result = ret;
blk_end_request_all(req, BLK_STS_OK);
@ -207,8 +192,7 @@ static void bsg_request_fn(struct request_queue *q)
continue;
}
job = req->special;
ret = q->bsg_job_fn(job);
ret = q->bsg_job_fn(blk_mq_rq_to_pdu(req));
spin_lock_irq(q->queue_lock);
if (ret)
break;
@ -219,6 +203,35 @@ static void bsg_request_fn(struct request_queue *q)
spin_lock_irq(q->queue_lock);
}
static int bsg_init_rq(struct request_queue *q, struct request *req, gfp_t gfp)
{
struct bsg_job *job = blk_mq_rq_to_pdu(req);
struct scsi_request *sreq = &job->sreq;
memset(job, 0, sizeof(*job));
scsi_req_init(sreq);
sreq->sense_len = SCSI_SENSE_BUFFERSIZE;
sreq->sense = kzalloc(sreq->sense_len, gfp);
if (!sreq->sense)
return -ENOMEM;
job->req = req;
job->reply = sreq->sense;
job->reply_len = sreq->sense_len;
job->dd_data = job + 1;
return 0;
}
static void bsg_exit_rq(struct request_queue *q, struct request *req)
{
struct bsg_job *job = blk_mq_rq_to_pdu(req);
struct scsi_request *sreq = &job->sreq;
kfree(sreq->sense);
}
/**
* bsg_setup_queue - Create and add the bsg hooks so we can receive requests
* @dev: device to attach bsg device to
@ -235,7 +248,9 @@ struct request_queue *bsg_setup_queue(struct device *dev, char *name,
q = blk_alloc_queue(GFP_KERNEL);
if (!q)
return ERR_PTR(-ENOMEM);
q->cmd_size = sizeof(struct scsi_request);
q->cmd_size = sizeof(struct bsg_job) + dd_job_size;
q->init_rq_fn = bsg_init_rq;
q->exit_rq_fn = bsg_exit_rq;
q->request_fn = bsg_request_fn;
ret = blk_init_allocated_queue(q);
@ -243,7 +258,6 @@ struct request_queue *bsg_setup_queue(struct device *dev, char *name,
goto out_cleanup_queue;
q->queuedata = dev;
q->bsg_job_size = dd_job_size;
q->bsg_job_fn = job_fn;
queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q);
queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q);

10
drivers/acpi/acpica/nsxfeval.c
View File

@ -100,9 +100,13 @@ acpi_evaluate_object_typed(acpi_handle handle,
free_buffer_on_error = TRUE;
}
status = acpi_get_handle(handle, pathname, &target_handle);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
if (pathname) {
status = acpi_get_handle(handle, pathname, &target_handle);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
} else {
target_handle = handle;
}
full_pathname = acpi_ns_get_external_pathname(target_handle);

17
drivers/acpi/ec.c
View File

@ -1741,7 +1741,7 @@ error:
* functioning ECDT EC first in order to handle the events.
* https://bugzilla.kernel.org/show_bug.cgi?id=115021
*/
int __init acpi_ec_ecdt_start(void)
static int __init acpi_ec_ecdt_start(void)
{
acpi_handle handle;
@ -2003,20 +2003,17 @@ static inline void acpi_ec_query_exit(void)
int __init acpi_ec_init(void)
{
int result;
int ecdt_fail, dsdt_fail;
/* register workqueue for _Qxx evaluations */
result = acpi_ec_query_init();
if (result)
goto err_exit;
/* Now register the driver for the EC */
result = acpi_bus_register_driver(&acpi_ec_driver);
if (result)
goto err_exit;
return result;
err_exit:
if (result)
acpi_ec_query_exit();
return result;
/* Drivers must be started after acpi_ec_query_init() */
ecdt_fail = acpi_ec_ecdt_start();
dsdt_fail = acpi_bus_register_driver(&acpi_ec_driver);
return ecdt_fail && dsdt_fail ? -ENODEV : 0;
}
/* EC driver currently not unloadable */

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