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a7bea8308933aaeea76dad7d42a6e51000417626
android_kernel_xiaomi_sm8450/arch/x86/kernel
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Jan Beulich a7bea83089 x86/asm/64: Use 32-bit XOR to zero registers 
Some Intel CPUs don't recognize 64-bit XORs as zeroing idioms. Zeroing
idioms don't require execution bandwidth, as they're being taken care
of in the frontend (through register renaming). Use 32-bit XORs instead.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Alok Kataria <akataria@vmware.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davem@davemloft.net
Cc: herbert@gondor.apana.org.au
Cc: pavel@ucw.cz
Cc: rjw@rjwysocki.net
Link: http://lkml.kernel.org/r/5B39FF1A02000078001CFB54@prv1-mh.provo.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-07-03 09:59:29 +02:00
..
acpi
x86/acpi: Prevent X2APIC id 0xffffffff from being accounted
2018-04-17 11:56:31 +02:00
apic
x86/apic/vector: Print APIC control bits in debugfs
2018-06-06 15:18:22 +02:00
cpu
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
fpu
Merge commit 'upstream-x86-entry' into WIP.x86/mm
2017-12-17 12:58:53 +01:00
kprobes
kprobes/x86: Prohibit probing on exception masking instructions
2018-05-13 19:52:55 +02:00
.gitignore
…
alternative.c
x86/paravirt: Remove 'noreplace-paravirt' cmdline option
2018-01-31 10:37:45 +01:00
amd_gart_64.c
x86/dma/amd_gart: Use dma_direct_{alloc,free}()
2018-03-20 10:01:57 +01:00
amd_nb.c
x86/amd_nb: Add support for Raven Ridge CPUs
2018-05-13 09:00:27 -07:00
apb_timer.c
…
aperture_64.c
x86/gart: Exclude GART aperture from vmcore
2018-01-11 15:09:24 +01:00
apm_32.c
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-04 19:17:47 -07:00
asm-offsets_32.c
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
asm-offsets_64.c
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
asm-offsets.c
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
audit_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bootflag.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
check.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cpuid.c
x86/cpuid: Allow cpuid_read() to schedule
2018-03-27 12:01:48 +02:00
crash_dump_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crash_dump_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crash.c
kexec_file, x86: move re-factored code to generic side
2018-04-13 17:10:27 -07:00
devicetree.c
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-04-02 16:15:32 -07:00
doublefault.c
x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss
2017-12-17 13:59:55 +01:00
dumpstack_32.c
x86/dumpstack: Unify show_regs()
2018-03-08 12:04:59 +01:00
dumpstack_64.c
x86/dumpstack: Unify show_regs()
2018-03-08 12:04:59 +01:00
dumpstack.c
x86/dumpstack: Explain the reasoning for the prologue and buffer size
2018-04-26 16:15:28 +02:00
e820.c
x86: Remove pr_fmt duplicate logging prefixes
2018-05-13 21:25:18 +02:00
early_printk.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
early-quirks.c
x86/early-quirks: Rename duplicate define of dev_err
2018-05-13 20:04:35 +02:00
ebda.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
eisa.c
x86/eisa: Add missing include
2017-08-31 21:34:48 +02:00
espfix_64.c
x86/espfix: Document use of _PAGE_GLOBAL
2018-04-09 18:27:33 +02:00
ftrace_32.S
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
2018-01-12 00:14:30 +01:00
ftrace_64.S
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-01-28 12:19:23 -08:00
ftrace.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
head32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
head64.c
x86/mm: Mark __pgtable_l5_enabled __initdata
2018-05-19 11:56:58 +02:00
head_32.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
head_64.S
x86/asm/64: Use 32-bit XOR to zero registers
2018-07-03 09:59:29 +02:00
hpet.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
hw_breakpoint.c
…
i8237.c
x86/i8237: Register device based on FADT legacy boot flag
2018-04-27 16:44:29 +02:00
i8253.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
i8259.c
Merge branch 'linus' into x86/apic, to resolve conflicts
2017-11-07 10:51:10 +01:00
idt.c
x86/idt: Simplify the idt_setup_apic_and_irq_gates()
2018-06-06 13:38:01 +02:00
io_delay.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ioport.c
x86/ioport: add ksys_ioperm() helper; remove in-kernel calls to sys_ioperm()
2018-04-02 20:16:12 +02:00
irq_32.c
x86/retpoline/irq32: Convert assembler indirect jumps
2018-01-12 00:14:32 +01:00
irq_64.c
x86/irq/64: Print the offending IP in the stack overflow warning
2017-12-17 13:59:53 +01:00
irq_work.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq.c
Drivers: hv: vmbus: Implement Direct Mode for stimer0
2018-03-06 09:57:17 -08:00
irqinit.c
x86/apic: Simplify init_bsp_APIC() usage
2018-02-13 17:30:38 +01:00
itmt.c
x86/headers: Remove duplicate #includes
2017-12-12 11:32:24 +01:00
jailhouse.c
x86: Convert x86_platform_ops to timespec64
2018-05-19 14:03:14 +02:00
jump_label.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kdebugfs.c
x86, mpparse, x86/acpi, x86/PCI, x86/dmi, SFI: Use memremap() for RAM mappings
2017-07-18 11:37:58 +02:00
kexec-bzimage64.c
kexec_file: do not add extra alignment to efi memmap
2018-04-20 17:18:36 -07:00
kgdb.c
…
ksysfs.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
kvm.c
kvm: rename KVM_HINTS_DEDICATED to KVM_HINTS_REALTIME
2018-05-17 19:12:13 +02:00
kvmclock.c
x86: Convert x86_platform_ops to timespec64
2018-05-19 14:03:14 +02:00
ldt.c
x86/ldt: Fix support_pte_mask filtering in map_ldt_struct()
2018-04-16 11:20:34 -07:00
livepatch.c
…
machine_kexec_32.c
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
2018-05-13 19:50:06 +02:00
machine_kexec_64.c
x86/mm: Stop pretending pgtable_l5_enabled is a variable
2018-05-19 11:56:57 +02:00
Makefile
Merge branch 'x86-dma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-04-02 17:18:45 -07:00
mmconf-fam10h_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module.c
x86: Treat R_X86_64_PLT32 as R_X86_64_PC32
2018-02-22 09:01:10 -08:00
mpparse.c
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-02-14 17:02:15 -08:00
msr.c
…
nmi_selftest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nmi.c
locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()
2017-10-25 11:01:08 +02:00
paravirt_patch_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
paravirt_patch_64.c
x86/asm/64: Use 32-bit XOR to zero registers
2018-07-03 09:59:29 +02:00
paravirt-spinlocks.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
paravirt.c
x86/mm: Rename flush_tlb_single() and flush_tlb_one() to __flush_tlb_one_[user|kernel]()
2018-02-15 01:15:52 +01:00
pci-calgary_64.c
x86/dma: Remove dma_alloc_coherent_gfp_flags()
2018-03-20 10:01:58 +01:00
pci-dma.c
x86/pci-dma: switch the VIA 32-bit DMA quirk to use the struct device flag
2018-05-28 12:48:25 +02:00
pci-iommu_table.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pci-swiotlb.c
x86/dma: Use generic swiotlb_ops
2018-03-20 10:01:57 +01:00
pcspeaker.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_regs.c
perf/x86: Store user space frame-pointer value on a sample
2018-05-25 08:11:12 +02:00
platform-quirks.c
x86/i8237: Register device based on FADT legacy boot flag
2018-04-27 16:44:29 +02:00
pmem.c
resource: Provide resource struct in resource walk callback
2017-11-07 15:35:57 +01:00
probe_roms.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
process_32.c
x86/dumpstack: Add a show_ip() function
2018-04-26 16:15:27 +02:00
process_64.c
x86/mm: Drop TS_COMPAT on 64-bit exec() syscall
2018-05-19 12:31:05 +02:00
process.c
x86/speculation: Rework speculative_store_bypass_update()
2018-05-17 17:09:19 +02:00
ptrace.c
signal: Ensure every siginfo we send has all bits initialized
2018-04-25 10:40:51 -05:00
pvclock.c
x86: Convert x86_platform_ops to timespec64
2018-05-19 14:03:14 +02:00
quirks.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
reboot_fixups_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
reboot.c
x86/apic: Fix restoring boot IRQ mode in reboot and kexec/kdump
2018-02-17 11:47:45 +01:00
relocate_kernel_32.S
…
relocate_kernel_64.S
x86/kexec: Make kexec (mostly) work in 5-level paging mode
2018-01-31 08:39:40 +01:00
resource.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rtc.c
x86: Convert x86_platform_ops to timespec64
2018-05-19 14:03:14 +02:00
setup_percpu.c
x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table
2018-03-01 09:48:27 +01:00
setup.c
mm/pkeys, x86, powerpc: Display pkey in smaps if arch supports pkeys
2018-05-09 11:51:49 +10:00
signal_compat.c
signal: Add TRAP_UNK si_code for undiagnosted trap exceptions
2018-04-25 10:40:56 -05:00
signal.c
x86: Add support for restartable sequences
2018-06-06 11:58:32 +02:00
smp.c
x86/tracing: Disentangle pagefault and resched IPI tracing key
2017-08-29 11:42:29 +02:00
smpboot.c
Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-04 18:19:18 -07:00
stacktrace.c
x86/stacktrace: Do not fail for ORC with regs on stack
2018-06-21 16:34:56 +02:00
step.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sys_x86_64.c
compat: Move compat_timespec/ timeval to compat_time.h
2018-04-19 13:29:54 +02:00
sysfb_efi.c
…
sysfb_simplefb.c
…
sysfb.c
…
tboot.c
x86/pti: Make unpoison of pgd for trusted boot work for real
2018-01-11 23:36:59 +01:00
tce_64.c
…
time.c
x86/time: Unconditionally register legacy timer interrupt
2018-01-14 20:18:23 +01:00
tls.c
x86/ldt: Make the LDT mapping RO
2017-12-23 21:13:01 +01:00
tls.h
…
topology.c
…
trace_clock.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tracepoint.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
traps.c
signal: Ensure every siginfo we send has all bits initialized
2018-04-25 10:40:51 -05:00
tsc_msr.c
…
tsc_sync.c
Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2017-11-13 19:07:38 -08:00
tsc.c
x86/tsc: Fix mark_tsc_unstable()
2018-05-02 16:10:40 +02:00
umip.c
signal: Ensure every siginfo we send has all bits initialized
2018-04-25 10:40:51 -05:00
unwind_frame.c
x86/unwind: Disable unwinder warnings on 32-bit
2017-10-10 12:49:49 +02:00
unwind_guess.c
x86/unwind: Add the ORC unwinder
2017-07-26 13:18:20 +02:00
unwind_orc.c
x86/unwind/orc: Detect the end of the stack
2018-06-21 16:34:56 +02:00
uprobes.c
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-04 19:17:47 -07:00
verify_cpu.S
x86/boot: Annotate verify_cpu() as a callable function
2017-09-28 09:39:03 +02:00
vm86_32.c
x86/vm86/32: Fix POPF emulation
2018-03-14 09:21:01 +01:00
vmlinux.lds.S
x86/build: Remove no-op macro VMLINUX_SYMBOL()
2018-05-13 15:11:34 +02:00
vsmp_64.c
x86/apic: Remove unused callbacks
2017-09-25 20:51:58 +02:00
x86_init.c
xen, mm: allow deferred page initialization for xen pv domains
2018-04-11 10:28:38 -07:00