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| author |  Josh Poimboeuf <jpoimboe@kernel.org>
| 2023-09-04 22:04:56 -0700 |
|---|---|---|
| committer |  Borislav Petkov (AMD) <bp@alien8.de>
| 2023-10-20 12:21:59 +0200 |
| commit | eb54be26b0d25222809b16f335fe13756ff4a206 (patch) | |
| tree | 1a125b85405f9ea0b8a813b3370867ef94a61f1f /arch/x86/lib | |
| parent | x86/srso: Improve i-cache locality for alias mitigation (diff) | |
| download | linux-eb54be26b0d25222809b16f335fe13756ff4a206.tar.gz linux-eb54be26b0d25222809b16f335fe13756ff4a206.tar.bz2 linux-eb54be26b0d25222809b16f335fe13756ff4a206.zip | |
x86/srso: Unexport untraining functions
These functions aren't called outside of retpoline.S.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/1ae080f95ce7266c82cba6d2adde82349b832654.1693889988.git.jpoimboe@kernel.org
Diffstat (limited to 'arch/x86/lib')
| -rw-r--r-- | arch/x86/lib/retpoline.S | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86/lib/retpoline.S b/arch/x86/lib/retpoline.S index 9ab634f0b5d2..a40ba18610d8 100644 --- a/arch/x86/lib/retpoline.S +++ b/arch/x86/lib/retpoline.S @@ -157,7 +157,6 @@ SYM_START(srso_alias_untrain_ret, SYM_L_GLOBAL, SYM_A_NONE) lfence jmp srso_alias_return_thunk SYM_FUNC_END(srso_alias_untrain_ret) -__EXPORT_THUNK(srso_alias_untrain_ret) .section .text..__x86.rethunk_safe #else @@ -215,7 +214,7 @@ SYM_CODE_END(srso_alias_return_thunk) */ .align 64 .skip 64 - (retbleed_return_thunk - retbleed_untrain_ret), 0xcc -SYM_START(retbleed_untrain_ret, SYM_L_GLOBAL, SYM_A_NONE) +SYM_START(retbleed_untrain_ret, SYM_L_LOCAL, SYM_A_NONE) ANNOTATE_NOENDBR /* * As executed from retbleed_untrain_ret, this is: @@ -263,7 +262,6 @@ SYM_CODE_END(retbleed_return_thunk) jmp retbleed_return_thunk int3 SYM_FUNC_END(retbleed_untrain_ret) -__EXPORT_THUNK(retbleed_untrain_ret) /* * SRSO untraining sequence for Zen1/2, similar to retbleed_untrain_ret() @@ -277,7 +275,7 @@ __EXPORT_THUNK(retbleed_untrain_ret) */ .align 64 .skip 64 - (srso_safe_ret - srso_untrain_ret), 0xcc -SYM_START(srso_untrain_ret, SYM_L_GLOBAL, SYM_A_NONE) +SYM_START(srso_untrain_ret, SYM_L_LOCAL, SYM_A_NONE) ANNOTATE_NOENDBR .byte 0x48, 0xb8 @@ -298,7 +296,6 @@ SYM_INNER_LABEL(srso_safe_ret, SYM_L_GLOBAL) ud2 SYM_CODE_END(srso_safe_ret) SYM_FUNC_END(srso_untrain_ret) -__EXPORT_THUNK(srso_untrain_ret) SYM_CODE_START(srso_return_thunk) UNWIND_HINT_FUNC |