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    Subject[PATCH V2 6/9] x86/speculation: Change __FILL_RETURN_BUFFER to work with objtool
    Date
    Change __FILL_RETURN_BUFFER so that the stack state is deterministically
    defined for each iteration and that objtool can have an accurate view
    of the stack.

    Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
    ---
    arch/x86/include/asm/nospec-branch.h | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
    index 5c24a7b35166..9a946fd5e824 100644
    --- a/arch/x86/include/asm/nospec-branch.h
    +++ b/arch/x86/include/asm/nospec-branch.h
    @@ -60,8 +60,8 @@
    jmp 775b; \
    774: \
    dec reg; \
    - jnz 771b; \
    - add $(BITS_PER_LONG/8) * nr, sp;
    + add $(BITS_PER_LONG/8) * 2, sp; \
    + jnz 771b;

    #ifdef __ASSEMBLY__

    --
    2.18.2
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