Messages in this thread Patch in this message | | | Date | Wed, 14 Mar 2018 05:28:01 -0700 | From | tip-bot for Andy Whitcroft <> | Subject | [tip:x86/pti] x86/speculation, objtool: Annotate indirect calls/jumps for objtool on 32-bit kernels |
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Commit-ID: a14bff131108faf50cc0cf864589fd71ee216c96 Gitweb: https://git.kernel.org/tip/a14bff131108faf50cc0cf864589fd71ee216c96 Author: Andy Whitcroft <apw@canonical.com> AuthorDate: Wed, 14 Mar 2018 11:24:27 +0000 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Wed, 14 Mar 2018 13:24:31 +0100
x86/speculation, objtool: Annotate indirect calls/jumps for objtool on 32-bit kernels
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> --- arch/x86/include/asm/nospec-branch.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index b7063cfa19f9..b3996d60f981 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" \
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