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Message-Id: <20190708174913.123308-6-thgarnie@chromium.org> Date: Mon, 8 Jul 2019 10:48:58 -0700 From: Thomas Garnier <thgarnie@...omium.org> To: kernel-hardening@...ts.openwall.com Cc: kristen@...ux.intel.com, keescook@...omium.org, Thomas Garnier <thgarnie@...omium.org>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org, linux-kernel@...r.kernel.org Subject: [PATCH v8 05/11] 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 below 0xffffffff80000000. Signed-off-by: Thomas Garnier <thgarnie@...omium.org> Reviewed-by: Kees Cook <keescook@...omium.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" \ -- 2.22.0.410.gd8fdbe21b5-goog
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