[RFC v3 07/27] x86: pm-trace - Adapt assembly for PIE support
From: Thomas Garnier via Virtualization <hidden>
Date: 2017-10-04 21:19:43
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Change assembly to use the new _ASM_GET_PTR macro instead of _ASM_MOV for the assembly to be PIE compatible. Position Independent Executable (PIE) support will allow to extended the KASLR randomization range below the -2G memory limit. Signed-off-by: Thomas Garnier <redacted> --- 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 7b7ac42c3661..a3801261f0dd 100644
--- a/arch/x86/include/asm/pm-trace.h
+++ b/arch/x86/include/asm/pm-trace.h@@ -7,7 +7,7 @@ do { \ if (pm_trace_enabled) { \ const void *tracedata; \ - asm volatile(_ASM_MOV " $1f,%0\n" \ + asm volatile(_ASM_GET_PTR(1f, %0) "\n" \ ".section .tracedata,\"a\"\n" \ "1:\t.word %c1\n\t" \ _ASM_PTR " %c2\n" \
--
2.14.2.920.gcf0c67979c-goog