diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-04-22 18:16:40 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-04-30 21:14:34 +0300 |
| commit | 34fdce6981b96920ced4e0ee56e9db3fb03a33f0 (patch) | |
| tree | a976b04464b5eaad0b574d29e6fa808222dd5e2d /arch/x86/include/asm/nospec-branch.h | |
| parent | ca3f0d80dd57c8828bfb5bc0bc79750ea7a1ba26 (diff) | |
| download | linux-34fdce6981b96920ced4e0ee56e9db3fb03a33f0.tar.xz | |
x86: Change {JMP,CALL}_NOSPEC argument
In order to change the {JMP,CALL}_NOSPEC macros to call out-of-line
versions of the retpoline magic, we need to remove the '%' from the
argument, such that we can paste it onto symbol names.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20200428191700.151623523@infradead.org
Diffstat (limited to 'arch/x86/include/asm/nospec-branch.h')
| -rw-r--r-- | arch/x86/include/asm/nospec-branch.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index b8890e18f624..d3269b69728a 100644 --- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -118,22 +118,22 @@ .macro JMP_NOSPEC reg:req #ifdef CONFIG_RETPOLINE ANNOTATE_NOSPEC_ALTERNATIVE - ALTERNATIVE_2 __stringify(ANNOTATE_RETPOLINE_SAFE; jmp *\reg), \ - __stringify(RETPOLINE_JMP \reg), X86_FEATURE_RETPOLINE, \ - __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; jmp *\reg), X86_FEATURE_RETPOLINE_AMD + ALTERNATIVE_2 __stringify(ANNOTATE_RETPOLINE_SAFE; jmp *%\reg), \ + __stringify(RETPOLINE_JMP %\reg), X86_FEATURE_RETPOLINE,\ + __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; jmp *%\reg), X86_FEATURE_RETPOLINE_AMD #else - jmp *\reg + jmp *%\reg #endif .endm .macro CALL_NOSPEC reg:req #ifdef CONFIG_RETPOLINE ANNOTATE_NOSPEC_ALTERNATIVE - ALTERNATIVE_2 __stringify(ANNOTATE_RETPOLINE_SAFE; call *\reg), \ - __stringify(RETPOLINE_CALL \reg), X86_FEATURE_RETPOLINE,\ - __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; call *\reg), X86_FEATURE_RETPOLINE_AMD + ALTERNATIVE_2 __stringify(ANNOTATE_RETPOLINE_SAFE; call *%\reg),\ + __stringify(RETPOLINE_CALL %\reg), X86_FEATURE_RETPOLINE,\ + __stringify(lfence; ANNOTATE_RETPOLINE_SAFE; call *%\reg), X86_FEATURE_RETPOLINE_AMD #else - call *\reg + call *%\reg #endif .endm |