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Message-Id: <20180625224014.134829-8-thgarnie@google.com>
Date: Mon, 25 Jun 2018 15:38:55 -0700
From: Thomas Garnier <thgarnie@...gle.com>
To: kernel-hardening@...ts.openwall.com
Cc: Thomas Garnier <thgarnie@...gle.com>, Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
Kate Stewart <kstewart@...uxfoundation.org>, Philippe Ombredanne <pombredanne@...b.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-kernel@...r.kernel.org
Subject: [PATCH v5 07/27] x86: pm-trace - Adapt assembly for PIE support
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 0xffffffff80000000.
Signed-off-by: Thomas Garnier <thgarnie@...gle.com>
---
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" \
--
2.18.0.rc2.346.g013aa6912e-goog
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