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Message-Id: <20190730191303.206365-3-thgarnie@chromium.org>
Date: Tue, 30 Jul 2019 12:12:46 -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,
Peter Zijlstra <peterz@...radead.org>,
Nadav Amit <namit@...are.com>,
Jann Horn <jannh@...gle.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH v9 02/11] x86: Add macro to get symbol address for PIE support
Add a new _ASM_MOVABS macro to fetch a symbol address. It will be used
to replace "_ASM_MOV $<symbol>, %dst" code construct that are not
compatible with PIE.
Signed-off-by: Thomas Garnier <thgarnie@...omium.org>
---
arch/x86/include/asm/asm.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 3ff577c0b102..3a686057e882 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -30,6 +30,7 @@
#define _ASM_ALIGN __ASM_SEL(.balign 4, .balign 8)
#define _ASM_MOV __ASM_SIZE(mov)
+#define _ASM_MOVABS __ASM_SEL(movl, movabsq)
#define _ASM_INC __ASM_SIZE(inc)
#define _ASM_DEC __ASM_SIZE(dec)
#define _ASM_ADD __ASM_SIZE(add)
--
2.22.0.770.g0f2c4a37fd-goog
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