Commit-ID: 4ac86a6dcec1c3878de9747bf5a2aa4455be69e3
Gitweb: http://git.kernel.org/tip/4ac86a6dcec1c3878de9747bf5a2aa4455be69e3
Author: Andrey Ryabinin <ryabinin....@gmail.com>
AuthorDate: Tue, 29 Sep 2015 19:40:14 +0300
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate: Wed, 30 Sep 2015 09:29:53 +0200
x86, efi, kasan: Fix build failure on !KASAN && KMEMCHECK=y kernels
With KMEMCHECK=y, KASAN=n we get this build failure:
arch/x86/platform/efi/efi.c:673:3: error: implicit declaration of function
‘memcpy’ [-Werror=implicit-function-declaration]
arch/x86/platform/efi/efi_64.c:139:2: error: implicit declaration of function
‘memcpy’ [-Werror=implicit-function-declaration]
arch/x86/include/asm/desc.h:121:2: error: implicit declaration of function
‘memcpy’ [-Werror=implicit-function-declaration]
Don't #undef memcpy if KASAN=n.
Reported-by: Ingo Molnar <mi...@kernel.org>
Reported-by: Sedat Dilek <sedat.di...@gmail.com>
Signed-off-by: Andrey Ryabinin <ryabinin....@gmail.com>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Matt Fleming <matt.flem...@intel.com>
Cc: Mike Galbraith <efa...@gmx.de>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Fixes: 769a8089c1fd ("x86, efi, kasan: #undef memset/memcpy/memmove per arch")
Link:
http://lkml.kernel.org/r/1443544814-20122-1-git-send-email-ryabinin....@gmail.com
Signed-off-by: Ingo Molnar <mi...@kernel.org>
---
arch/x86/include/asm/efi.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index ab5f1d4..ae68be9 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -86,6 +86,7 @@ extern u64 asmlinkage efi_call(void *fp, ...);
extern void __iomem *__init efi_ioremap(unsigned long addr, unsigned long size,
u32 type, u64 attribute);
+#ifdef CONFIG_KASAN
/*
* CONFIG_KASAN may redefine memset to __memset. __memset function is present
* only in kernel binary. Since the EFI stub linked into a separate binary it
@@ -95,6 +96,7 @@ extern void __iomem *__init efi_ioremap(unsigned long addr,
unsigned long size,
#undef memcpy
#undef memset
#undef memmove
+#endif
#endif /* CONFIG_X86_32 */
--
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