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954e482bde20b0e208fd4d34ef26e10afd194600
android_kernel_xiaomi_sm8450/arch/x86/kernel
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Fenghua Yu 954e482bde x86/copy_user_generic: Optimize copy_user_generic with CPU erms feature 
According to Intel 64 and IA-32 SDM and Optimization Reference Manual, beginning
with Ivybridge, REG string operation using MOVSB and STOSB can provide both
flexible and high-performance REG string operations in cases like memory copy.
Enhancement availability is indicated by CPUID.7.0.EBX[9] (Enhanced REP MOVSB/
STOSB).

If CPU erms feature is detected, patch copy_user_generic with enhanced fast
string version of copy_user_generic.

A few new macros are defined to reduce duplicate code in ALTERNATIVE and
ALTERNATIVE_2.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1337908785-14015-1-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-06-29 15:33:34 -07:00
..
acpi
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
apic
x86/ioapic: Fix NULL pointer dereference on CPU hotplug after disabling irqs
2012-06-06 12:03:25 +02:00
cpu
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-06-08 09:26:55 -07:00
.gitignore
…
alternative.c
x86/alternatives: Use atomic_xchg() instead atomic_dec_and_test() for stop_machine_text_poke()
2012-06-13 15:08:37 +02:00
amd_gart_64.c
X86 & IA64: adapt for dma_map_ops changes
2012-03-28 16:36:31 +02:00
amd_nb.c
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci
2012-01-11 18:50:26 -08:00
apb_timer.c
Merge branch 'timers-clocksource-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-07-23 10:34:47 -07:00
aperture_64.c
x86/gart: Fix kmemleak warning
2012-06-06 11:58:38 +02:00
apm_32.c
x86: Use kick_all_cpus_sync()
2012-05-08 12:35:06 +02:00
asm-offsets_32.c
x86: Generate system call tables and unistd_*.h from tables
2011-11-17 13:35:37 -08:00
asm-offsets_64.c
x32: If configured, add x32 system calls to system call tables
2012-02-20 12:52:06 -08:00
asm-offsets.c
x86, efi: EFI boot stub support
2011-12-12 14:26:10 -08:00
audit_64.c
…
bootflag.c
…
check.c
x86: kernel/check.c simple_strtoul cleanup
2012-05-15 15:36:41 -07:00
cpuid.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
crash_dump_32.c
x86: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:15 +08:00
crash_dump_64.c
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
2011-03-23 19:47:19 -07:00
crash.c
x86, nmi: Wire up NMI handlers to new routines
2011-10-10 06:56:57 +02:00
devicetree.c
irq_domain/x86: Convert x86 (embedded) to use common irq_domain
2012-02-23 14:37:47 -07:00
doublefault_32.c
…
dumpstack_32.c
x86: Avoid double stack traces with show_regs()
2012-05-09 11:44:42 +02:00
dumpstack_64.c
x86: Avoid double stack traces with show_regs()
2012-05-09 11:44:42 +02:00
dumpstack.c
Merge branches 'x86-asm-for-linus', 'x86-cleanups-for-linus', 'x86-cpu-for-linus', 'x86-debug-for-linus' and 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-23 10:09:50 -07:00
e820.c
x86: print e820 physical addresses consistently with other parts of kernel
2012-05-29 16:22:20 -07:00
early_printk.c
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-01-11 19:13:40 -08:00
early-quirks.c
x86, quirk: Fix SB600 revision check
2011-03-16 14:03:32 +01:00
entry_32.S
x86: get rid of calling do_notify_resume() when returning to kernel mode
2012-06-01 13:01:51 -04:00
entry_64.S
ftrace/x86: Do not change stacks in DEBUG when calling lockdep
2012-05-31 23:12:22 -04:00
ftrace.c
ftrace: Use breakpoint method to update ftrace caller
2012-05-31 23:12:19 -04:00
head32.c
x86, realmode: Move ACPI wakeup to unified realmode code
2012-05-08 11:46:05 -07:00
head64.c
x86, realmode: Move ACPI wakeup to unified realmode code
2012-05-08 11:46:05 -07:00
head_32.S
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
head_64.S
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
head.c
memblock, x86: Replace memblock_x86_reserve/free_range() with generic ones
2011-07-14 11:47:53 -07:00
hpet.c
x86: hpet: Fix copy-and-paste mistake in earlier change
2012-05-25 15:32:29 +02:00
hw_breakpoint.c
x86: Use this_cpu_ops to optimize code
2010-12-30 12:20:28 +01:00
i386_ksyms_32.c
…
i387.c
x86: replace percpu_xxx funcs with this_cpu_xxx
2012-05-14 14:15:31 -07:00
i8237.c
x86: Use syscore_ops instead of sysdev classes and sysdevs
2011-03-23 22:15:54 +01:00
i8253.c
x86: Use common i8253 clockevent
2011-07-01 10:37:14 +02:00
i8259.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
io_delay.c
…
ioport.c
x86: Use bitmap library functions
2011-02-17 14:59:22 +01:00
irq_32.c
x86: Use common threadinfo allocator
2012-05-08 14:08:44 +02:00
irq_64.c
x86: Add stack top margin for stack overflow checking
2011-12-07 09:27:11 +01:00
irq_work.c
irq_work: Add generic hardirq context callbacks
2010-10-18 19:58:50 +02:00
irq.c
x86: Preserve lazy irq disable semantics in fixup_irqs()
2012-03-29 15:28:47 +02:00
irqinit.c
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 18:21:35 -07:00
jump_label.c
jump_label, x86: Fix section mismatch
2011-12-06 20:41:02 +01:00
kdebugfs.c
simple_open: automatically convert to simple_open()
2012-04-05 15:25:50 -07:00
kgdb.c
Merge tag 'for_linus-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb
2012-04-04 17:26:08 -07:00
kprobes-common.h
x86/kprobes: Split out optprobe related code to kprobes-opt.c
2012-03-06 09:49:49 +01:00
kprobes-opt.c
x86/kprobes: Split out optprobe related code to kprobes-opt.c
2012-03-06 09:49:49 +01:00
kprobes.c
x86: Avoid double stack traces with show_regs()
2012-05-09 11:44:42 +02:00
kvm.c
KVM: Do not take reference to mm during async #PF
2012-05-06 15:00:02 +03:00
kvmclock.c
kvmclock: remove unneeded EXPORT macro
2012-04-08 12:49:54 +03:00
ldt.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
machine_kexec_32.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
machine_kexec_64.c
x86, cleanups: Use clear_page/copy_page rather than memset/memcpy
2010-09-22 15:36:49 -07:00
Makefile
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
microcode_amd.c
x86, microcode: Ensure that module is only loaded on supported AMD CPUs
2012-04-13 11:51:05 +02:00
microcode_core.c
x86, microcode: microcode_core.c simple_strtoul cleanup
2012-05-07 11:36:49 -07:00
microcode_intel.c
x86/microcode: Ensure that module is only loaded on supported Intel CPUs
2012-05-07 14:37:14 +02:00
mmconf-fam10h_64.c
x86-64: Fix and clean up AMD Fam10 MMCONF enabling
2010-11-18 13:41:35 +01:00
module.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
mpparse.c
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
msr.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
nmi_selftest.c
x86/nmi: Fix section mismatch warnings on 32-bit
2012-06-08 12:19:27 +02:00
nmi.c
x86: Reset the debug_stack update counter
2012-05-31 23:12:20 -04:00
paravirt_patch_32.c
…
paravirt_patch_64.c
…
paravirt-spinlocks.c
…
paravirt.c
x86: replace percpu_xxx funcs with this_cpu_xxx
2012-05-14 14:15:31 -07:00
pci-calgary_64.c
Merge branches 'x86-asm-for-linus', 'x86-cleanups-for-linus', 'x86-cpu-for-linus', 'x86-debug-for-linus' and 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-23 10:09:50 -07:00
pci-dma.c
X86: integrate CMA with DMA-mapping subsystem
2012-05-21 15:09:38 +02:00
pci-iommu_table.c
arch/x86/kernel/pci-iommu_table.c: Convert sprintf_symbol to %pS
2011-05-10 10:21:35 +02:00
pci-nommu.c
X86: integrate CMA with DMA-mapping subsystem
2012-05-21 15:09:38 +02:00
pci-swiotlb.c
X86 & IA64: adapt for dma_map_ops changes
2012-03-28 16:36:31 +02:00
pcspeaker.c
…
probe_roms.c
x86: Include probe_roms.h in probe_roms.c
2012-03-08 10:57:35 +01:00
process_32.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-23 10:59:07 -07:00
process_64.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-23 10:59:07 -07:00
process.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-23 10:59:07 -07:00
ptrace.c
x86, x32, ptrace: Remove PTRACE_ARCH_PRCTL for x32
2012-06-01 13:54:21 -07:00
pvclock.c
x86/pvclock: Zero last_value on resume
2010-11-28 09:33:20 +01:00
quirks.c
x86, amd: Fix up numa_node information for AMD CPU family 15h model 0-0fh northbridge functions
2011-12-05 18:13:11 +01:00
reboot_fixups_32.c
x86: Ce4100: Add reboot_fixup() for CE4100
2010-11-12 00:45:41 +01:00
reboot.c
x86/reboot: Fix a warning message triggered by stop_other_cpus()
2012-06-06 12:03:23 +02:00
relocate_kernel_32.S
kexec, x86: Fix incorrect jump back address if not preserving context
2011-07-21 11:19:28 +02:00
relocate_kernel_64.S
kexec, x86: Fix incorrect jump back address if not preserving context
2011-07-21 11:19:28 +02:00
resource.c
x86: avoid high BIOS area when allocating address space
2010-12-17 10:01:30 -08:00
rtc.c
x86/rtc, mrst: Don't register a platform RTC device for for Intel MID platforms
2011-12-05 17:09:21 +01:00
setup_percpu.c
percpu, x86: don't use PMD_SIZE as embedded atom_size on 32bit
2012-05-08 09:42:18 -07:00
setup.c
Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-29 20:14:53 -07:00
signal.c
x86: get rid of calling do_notify_resume() when returning to kernel mode
2012-06-01 13:01:51 -04:00
smp.c
x86/reboot: Update nonmi_ipi parameter
2012-05-14 11:49:38 +02:00
smpboot.c
sched/x86: Calculate booted cores after construction of sibling_mask
2012-06-06 16:37:59 +02:00
stacktrace.c
x86: Swap save_stack_trace_regs parameters
2011-06-14 22:48:51 -04:00
step.c
x86-64: Add user_64bit_mode paravirt op
2011-08-04 16:13:49 -07:00
sys_i386_32.c
i386: Make kernel_execve() suitable for stack unwinding
2010-09-03 08:16:02 +02:00
sys_x86_64.c
Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 18:12:23 -07:00
syscall_32.c
x86, syscall: Re-fix typo in comment
2011-11-18 16:25:07 -08:00
syscall_64.c
x32: If configured, add x32 system calls to system call tables
2012-02-20 12:52:06 -08:00
tboot.c
x86, realmode: fixes compilation issue in tboot.c
2012-05-08 15:04:27 -07:00
tce_64.c
Disintegrate asm/system.h for X86
2012-03-28 18:11:12 +01:00
test_nx.c
x86: Eliminate various 'set but not used' warnings
2011-05-21 19:10:33 +02:00
test_rodata.c
x86, extable: Remove open-coded exception table entries in arch/x86/kernel/test_rodata.c
2012-04-20 13:51:38 -07:00
time.c
MCA: delete all remaining traces of microchannel bus support.
2012-05-17 19:06:13 -04:00
tls.c
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 14:28:26 -07:00
tls.h
…
topology.c
x86: Fix files explicitly requiring export.h for EXPORT_SYMBOL/THIS_MODULE
2011-10-31 19:30:35 -04:00
traps.c
ftrace: Synchronize variable setting with breakpoints
2012-05-31 23:12:17 -04:00
tsc_sync.c
x86/tsc: Reduce the TSC sync check time for core-siblings
2012-02-22 11:49:40 +01:00
tsc.c
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 14:16:48 -07:00
uprobes.c
uprobes/core: Handle breakpoint and singlestep exceptions
2012-03-14 07:41:36 +01:00
verify_cpu.S
x86: Fix common misspellings
2011-03-18 10:39:30 +01:00
vm86_32.c
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 18:21:35 -07:00
vmlinux.lds.S
x86, realmode: Move ACPI wakeup to unified realmode code
2012-05-08 11:46:05 -07:00
vsmp_64.c
x86/vsmp: Fix number of CPUs when vsmp is disabled
2012-05-14 14:42:33 +02:00
vsyscall_64.c
x86: vsyscall: Use NULL instead 0 for a pointer argument
2012-04-06 11:49:59 +02:00
vsyscall_emu_64.S
x86-64: Rework vsyscall emulation and add vsyscall= parameter
2011-08-10 19:26:46 -05:00
vsyscall_trace.h
x86-64: Add vsyscall:emulate_vsyscall trace event
2011-08-04 16:13:53 -07:00
x86_init.c
x86/apic: Replace io_apic_ops with x86_io_apic_ops.
2012-05-01 14:50:09 -04:00
x8664_ksyms_64.c
x86/copy_user_generic: Optimize copy_user_generic with CPU erms feature
2012-06-29 15:33:34 -07:00
xsave.c
x86, xsave: remove thread_has_fpu() bug check in __sanitize_i387_state()
2012-05-16 15:17:17 -07:00