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| author | Borislav Petkov (AMD) <bp@alien8.de> | 2024-01-30 13:59:38 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-04-09 19:08:11 +0300 |
| commit | f796c75837623058db1ff93252b9f1681306b83d (patch) | |
| tree | 8c66dac0c85884b6b09b4d160d1e5d7f29528476 /arch/x86/include | |
| parent | ee8962082a4413dba1a1b3d3d23490c5221f3b8a (diff) | |
| download | linux-f796c75837623058db1ff93252b9f1681306b83d.tar.xz | |
x86/alternatives: Use a temporary buffer when optimizing NOPs
Instead of optimizing NOPs in-place, use a temporary buffer like the
usual alternatives patching flow does. This obviates the need to grab
locks when patching, see
6778977590da ("x86/alternatives: Disable interrupts and sync when optimizing NOPs in place")
While at it, add nomenclature definitions clarifying and simplifying the
naming of function-local variables in the alternatives code.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240130105941.19707-2-bp@alien8.de
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/text-patching.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/text-patching.h b/arch/x86/include/asm/text-patching.h index 345aafbc1964..6259f1937fe7 100644 --- a/arch/x86/include/asm/text-patching.h +++ b/arch/x86/include/asm/text-patching.h @@ -15,7 +15,7 @@ extern void text_poke_early(void *addr, const void *opcode, size_t len); -extern void apply_relocation(u8 *buf, size_t len, u8 *dest, u8 *src, size_t src_len); +extern void apply_relocation(u8 *buf, const u8 * const instr, size_t instrlen, u8 *repl, size_t repl_len); /* * Clear and restore the kernel write-protection flag on the local CPU. |