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| author |  Peter Zijlstra <peterz@infradead.org>
| 2023-06-22 15:36:50 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org>
| 2023-07-10 09:52:23 +0200 |
| commit | be0fffa5ca894a971a31c5e28aa77b633a97d1dc (patch) | |
| tree | fb8c2146f3ff9ab43b62294f04138b47dd590f8a /arch/x86/kernel/alternative.c | |
| parent | x86/cfi: Extend {JMP,CAKK}_NOSPEC comment (diff) | |
| download | linux-be0fffa5ca894a971a31c5e28aa77b633a97d1dc.tar.gz linux-be0fffa5ca894a971a31c5e28aa77b633a97d1dc.tar.bz2 linux-be0fffa5ca894a971a31c5e28aa77b633a97d1dc.zip | |
x86/alternative: Rename apply_ibt_endbr()
The current name doesn't reflect what it does very well.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lkml.kernel.org/r/20230622144321.427441595%40infradead.org
Diffstat (limited to 'arch/x86/kernel/alternative.c')
| -rw-r--r-- | arch/x86/kernel/alternative.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index 72646d75b6ff..27e0cb4d062a 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -803,7 +803,7 @@ static void __init_or_module poison_endbr(void *addr, bool warn) /* * Generated by: objtool --ibt */ -void __init_or_module noinline apply_ibt_endbr(s32 *start, s32 *end) +void __init_or_module noinline apply_seal_endbr(s32 *start, s32 *end) { s32 *s; @@ -818,7 +818,7 @@ void __init_or_module noinline apply_ibt_endbr(s32 *start, s32 *end) #else -void __init_or_module apply_ibt_endbr(s32 *start, s32 *end) { } +void __init_or_module apply_seal_endbr(s32 *start, s32 *end) { } #endif /* CONFIG_X86_KERNEL_IBT */ @@ -1565,7 +1565,10 @@ void __init alternative_instructions(void) */ callthunks_patch_builtin_calls(); - apply_ibt_endbr(__ibt_endbr_seal, __ibt_endbr_seal_end); + /* + * Seal all functions that do not have their address taken. + */ + apply_seal_endbr(__ibt_endbr_seal, __ibt_endbr_seal_end); #ifdef CONFIG_SMP /* Patch to UP if other cpus not imminent. */ |