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| author | Josh Poimboeuf <jpoimboe@kernel.org> | 2023-05-16 16:56:46 +0300 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@kernel.org> | 2023-06-07 19:48:57 +0300 |
| commit | 020126239b8f376ed2f0bef9dc07d0b280a0b7f5 (patch) | |
| tree | b794f51cac9d9d9865d09a10bf70c38e54414b87 /arch/x86/include/asm/alternative.h | |
| parent | 4a03aa34432abe0703abf232f31fc5e2ed8256f6 (diff) | |
| download | linux-020126239b8f376ed2f0bef9dc07d0b280a0b7f5.tar.xz | |
Revert "x86/orc: Make it callthunk aware"
Commit 396e0b8e09e8 ("x86/orc: Make it callthunk aware") attempted to
deal with the fact that function prefix code didn't have ORC coverage.
However, it didn't work as advertised. Use of the "null" ORC entry just
caused affected unwinds to end early.
The root cause has now been fixed with commit 5743654f5e2e ("objtool:
Generate ORC data for __pfx code").
Revert most of commit 396e0b8e09e8 ("x86/orc: Make it callthunk aware").
The is_callthunk() function remains as it's now used by other code.
Link: https://lore.kernel.org/r/a05b916ef941da872cbece1ab3593eceabd05a79.1684245404.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/alternative.h')
| -rw-r--r-- | arch/x86/include/asm/alternative.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h index d7da28fada87..6c15a622ad60 100644 --- a/arch/x86/include/asm/alternative.h +++ b/arch/x86/include/asm/alternative.h @@ -113,7 +113,6 @@ extern void callthunks_patch_builtin_calls(void); extern void callthunks_patch_module_calls(struct callthunk_sites *sites, struct module *mod); extern void *callthunks_translate_call_dest(void *dest); -extern bool is_callthunk(void *addr); extern int x86_call_depth_emit_accounting(u8 **pprog, void *func); #else static __always_inline void callthunks_patch_builtin_calls(void) {} @@ -124,10 +123,6 @@ static __always_inline void *callthunks_translate_call_dest(void *dest) { return dest; } -static __always_inline bool is_callthunk(void *addr) -{ - return false; -} static __always_inline int x86_call_depth_emit_accounting(u8 **pprog, void *func) { |