Messages in this thread Patch in this message | | | From | Thomas Garnier <> | Subject | [PATCH v9 05/11] x86: pm-trace - Adapt assembly for PIE support | Date | Tue, 30 Jul 2019 12:12:49 -0700 |
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Change assembly to use the new _ASM_MOVABS macro instead of _ASM_MOV for the assembly to be PIE compatible.
Position Independent Executable (PIE) support will allow to extend the KASLR randomization range below 0xffffffff80000000.
Signed-off-by: Thomas Garnier <thgarnie@chromium.org> Reviewed-by: Kees Cook <keescook@chromium.org> --- arch/x86/include/asm/pm-trace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/pm-trace.h b/arch/x86/include/asm/pm-trace.h index bfa32aa428e5..972070806ce9 100644 --- a/arch/x86/include/asm/pm-trace.h +++ b/arch/x86/include/asm/pm-trace.h @@ -8,7 +8,7 @@ do { \ if (pm_trace_enabled) { \ const void *tracedata; \ - asm volatile(_ASM_MOV " $1f,%0\n" \ + asm volatile(_ASM_MOVABS " $1f,%0\n" \ ".section .tracedata,\"a\"\n" \ "1:\t.word %c1\n\t" \ _ASM_PTR " %c2\n" \ -- 2.22.0.770.g0f2c4a37fd-goog
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