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x86/static_call: Add ANNOTATE_NOENDBR to static call trampoline 

The static call trampoline is never indirect-branched to, but is
referenced by the static call key.  Add ANNOTATE_NOENDBR.

Fixes: ed53a0d971 ("x86/alternative: Use .ibt_endbr_seal to seal indirect calls")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1b5b54aad7d81241dabe5e0c9b40dea64b540b00.1650300597.git.jpoimboe@redhat.com
This commit is contained in:
Josh Poimboeuf 2022-04-18 09:50:22 -07:00 committed by Peter Zijlstra
parent 4a5de9b76f
commit 613871cd66
1 changed files with 1 additions and 0 deletions
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arch/x86/include/asm/static_call.h
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@ -26,6 +26,7 @@
".align 4 \n" \
".globl " STATIC_CALL_TRAMP_STR(name) " \n" \
STATIC_CALL_TRAMP_STR(name) ": \n" \
ANNOTATE_NOENDBR \
insns " \n" \
".byte 0x53, 0x43, 0x54 \n" \
".type " STATIC_CALL_TRAMP_STR(name) ", @function \n" \