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

..

.gitignore

x86: Gitignore: arch/x86/lib/inat-tables.c

2009-11-04 13:11:28 +01:00

atomic64_32.c

x86: Adjust asm constraints in atomic64 wrappers

2012-01-20 17:29:31 -08:00

atomic64_386_32.S

x86/debug: Remove perpetually broken, unmaintainable dwarf annotations

2015-06-02 07:57:48 +02:00

atomic64_cx8_32.S

x86/debug: Remove perpetually broken, unmaintainable dwarf annotations

2015-06-02 07:57:48 +02:00

cache-smp.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

checksum_32.S

x86/retpoline/checksum32: Convert assembler indirect jumps

2018-01-12 00:14:31 +01:00

clear_page_64.S

x86/asm: Trim clear_page.S includes

2018-02-13 17:37:07 +01:00

cmdline.c

x86/boot: Add early cmdline parsing for options with arguments

2017-07-18 11:38:06 +02:00

cmpxchg8b_emu.S

x86: move exports to actual definitions

2016-08-07 23:47:15 -04:00

cmpxchg16b_emu.S

x86/debug: Remove perpetually broken, unmaintainable dwarf annotations

2015-06-02 07:57:48 +02:00

copy_page_64.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

copy_user_64.S

x86/uaccess: Optimize copy_user_enhanced_fast_string() for short strings

2017-06-30 09:52:51 +02:00

cpu.c

x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping

2018-02-15 01:15:52 +01:00

csum-copy_64.S

x86/asm: Don't use RBP as a temporary register in csum_partial_copy_generic()

2017-05-05 07:59:24 +02:00

csum-partial_64.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

csum-wrappers_64.c

Merge branch 'x86-headers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-08-01 14:23:42 -04:00

delay.c

Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-01-30 13:01:09 -08:00

error-inject.c

x86/error_inject: Make just_return_func() globally visible

2018-02-13 14:33:35 +01:00

getuser.S

x86/get_user: Use pointer masking to limit speculation

2018-01-30 21:54:31 +01:00

hweight.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

inat.c

x86: Fix to decode grouped AVX with VEX pp bits

2012-02-11 15:11:35 +01:00

insn-eval.c

x86/umip: Fix insn_get_code_seg_params()'s return value

2017-11-23 20:17:59 +01:00

insn.c

x86/insn: Add AVX-512 support to the instruction decoder

2016-07-21 09:37:11 -03:00

iomap_copy_64.S

x86/debug: Remove perpetually broken, unmaintainable dwarf annotations

2015-06-02 07:57:48 +02:00

kaslr.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile

Revert "x86/retpoline: Simplify vmexit_fill_RSB()"

2018-02-20 09:38:26 +01:00

memcpy_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memcpy_64.S

x86/asm/64: Use 32-bit XOR to zero registers

2018-07-03 09:59:29 +02:00

memmove_64.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memset_64.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

misc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mmx_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr-reg-export.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr-reg.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr-smp.c

x86/msr: Make rdmsrl_safe_on_cpu() scheduling safe as well

2018-03-28 10:34:13 +02:00

msr.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

putuser.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

retpoline.S

Revert "x86/retpoline: Simplify vmexit_fill_RSB()"

2018-02-20 09:38:26 +01:00

rwsem.S

locking/arch, x86: Add __down_read_killable()

2017-10-10 11:50:15 +02:00

string_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

strstr_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

usercopy_32.c

x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec

2018-01-30 21:54:31 +01:00

usercopy_64.c

Merge branch 'x86-dax-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-06-04 19:23:13 -07:00

usercopy.c

x86: switch to RAW_COPY_USER

2017-03-29 12:06:28 -04:00

x86-opcode-map.txt

x86/decoder: Fix and update the opcodes map

2017-12-15 13:45:20 +01:00