This enables the unwinder to grok the iret in the middle of a C function. Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> --- arch/x86/include/asm/processor.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 3cada99..9b90129 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -22,6 +22,7 @@ struct vm86; #include <asm/nops.h> #include <asm/special_insns.h> #include <asm/fpu/types.h> +#include <asm/undwarf.h> #include <linux/personality.h> #include <linux/cache.h> @@ -676,6 +677,7 @@ static inline void sync_core(void) unsigned int tmp; asm volatile ( + CFI_SAVE "mov %%ss, %0\n\t" "pushq %q0\n\t" "pushq %%rsp\n\t" @@ -685,6 +687,7 @@ static inline void sync_core(void) "pushq %q0\n\t" "pushq $1f\n\t" "iretq\n\t" + CFI_RESTORE "1:" : "=&r" (tmp), "+r" (__sp) : : "cc", "memory"); #endif -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
