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| author | Andy Whitcroft <apw@canonical.com> | 2018-03-14 14:24:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-22 11:17:59 +0300 |
| commit | a999c6095e73377b2b513437707a7a2a53d101ff (patch) | |
| tree | 9f95d91caf041025137386d44e3416cf1ef7eb37 /arch/x86 | |
| parent | 990a63c518ff4d7b670a3ef276ec4029aabaca19 (diff) | |
| download | linux-a999c6095e73377b2b513437707a7a2a53d101ff.tar.xz | |
x86/speculation, objtool: Annotate indirect calls/jumps for objtool on 32-bit kernels
commit a14bff131108faf50cc0cf864589fd71ee216c96 upstream.
In the following commit:
9e0e3c5130e9 ("x86/speculation, objtool: Annotate indirect calls/jumps for objtool")
... we added annotations for CALL_NOSPEC/JMP_NOSPEC on 64-bit x86 kernels,
but we did not annotate the 32-bit path.
Annotate it similarly.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180314112427.22351-1-apw@canonical.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/nospec-branch.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index d0dabeae0505..f928ad9b143f 100644 --- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -183,7 +183,10 @@ * otherwise we'll run out of registers. We don't care about CET * here, anyway. */ -# define CALL_NOSPEC ALTERNATIVE("call *%[thunk_target]\n", \ +# define CALL_NOSPEC \ + ALTERNATIVE( \ + ANNOTATE_RETPOLINE_SAFE \ + "call *%[thunk_target]\n", \ " jmp 904f;\n" \ " .align 16\n" \ "901: call 903f;\n" \ |