Peter Zijlstra df25edbac3 x86/alternatives: Add longer 64-bit NOPs ...

By adding support for longer NOPs there are a few more alternatives
that can turn into a single instruction.

Add up to NOP11, the same limit where GNU as .nops also stops
generating longer nops. This is because a number of uarchs have severe
decode penalties for more than 3 prefixes.

  [ bp: Sync up with the version in tools/ while at it. ]

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230515093020.661756940@infradead.org

2023-05-31 10:21:21 +02:00

..

alpha/include

tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h

2019-03-28 14:31:56 -03:00

arc/include/uapi/asm

tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv

2019-05-02 16:00:20 -04:00

arm/include

tools headers kvm: Sync kvm headers with the kernel sources

2019-12-02 12:54:13 -03:00

arm64/include

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2023-03-17 16:29:25 -07:00

csky/include/uapi/asm

csky: Add support for libdw

2019-05-15 16:36:46 -03:00

hexagon/include/uapi/asm

tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv

2019-05-02 16:00:20 -04:00

ia64/include

ia64: tools: remove duplicate definition of ia64_mf() on ia64

2021-04-16 16:10:37 -07:00

loongarch/include/uapi/asm

tools/perf: Add basic support for LoongArch

2023-05-01 17:19:59 +08:00

microblaze/include/uapi/asm

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02 11:19:54 +01:00

mips/include

perf tools: Copy uapi/asm/perf_regs.h from the kernel for MIPS

2021-06-01 10:07:46 -03:00

parisc/include/uapi/asm

parisc: Align parisc MADV_XXX constants with all other architectures

2022-12-17 23:19:39 +01:00

powerpc/include

perf powerpc: Add support to expose instruction and data address registers as part of extended regs

2021-10-25 13:47:42 -03:00

riscv/include/uapi/asm

Replace HTTP links with HTTPS ones: RISC-V

2020-07-30 11:37:40 -07:00

s390/include

selftests/bpf: Remove not used headers

2023-02-22 13:01:34 -08:00

sh/include

sh: remove sh5 support

2020-06-01 14:48:52 -04:00

sparc/include

tools headers UAPI: Update tools's copy of mman.h headers

2019-07-29 09:02:58 -03:00

x86

x86/alternatives: Add longer 64-bit NOPs

2023-05-31 10:21:21 +02:00

xtensa/include

tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h

2019-03-28 14:31:56 -03:00