This reverts commit c95afe5bcad40e1f0292bfc0a625c4aa080cc971, which was commit 089dd8e53126ebaf506e2dc0bf89d652c36bfc12 upstream.
The necessary changes to objtool have not been backported to 4.14. Backporting this commit alone only added build warnings.
Signed-off-by: Ben Hutchings ben@decadent.org.uk --- arch/x86/include/asm/nospec-branch.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index d5d4927e7683..0cd3b0c74d05 100644 --- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -4,13 +4,11 @@ #define _ASM_X86_NOSPEC_BRANCH_H_
#include <linux/static_key.h> -#include <linux/frame.h>
#include <asm/alternative.h> #include <asm/alternative-asm.h> #include <asm/cpufeatures.h> #include <asm/msr-index.h> -#include <asm/unwind_hints.h> #include <asm/percpu.h>
/* @@ -54,9 +52,9 @@ lfence; \ jmp 775b; \ 774: \ - add $(BITS_PER_LONG/8) * 2, sp; \ dec reg; \ jnz 771b; \ + add $(BITS_PER_LONG/8) * nr, sp; \ /* barrier for jnz misprediction */ \ lfence; #else @@ -167,8 +165,10 @@ * monstrosity above, manually. */ .macro FILL_RETURN_BUFFER reg:req nr:req ftr:req - ALTERNATIVE "jmp .Lskip_rsb_@", "", \ftr - __FILL_RETURN_BUFFER(\reg,\nr,%_ASM_SP) + ANNOTATE_NOSPEC_ALTERNATIVE + ALTERNATIVE "jmp .Lskip_rsb_@", \ + __stringify(__FILL_RETURN_BUFFER(\reg,\nr,%_ASM_SP)) \ + \ftr .Lskip_rsb_@: .endm