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authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-28 10:35:09 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-02-28 10:35:09 -0800
commita7f16d10b510f9ee3500af7831f2e3094fab3dca (patch)
treebd2bff5e13083e1103205ff926342d6674f8e5c5 /arch/x86/include/asm/alternative.h
parentf66ffdedbf0fc059a92219bb08c1dbcac88f074b (diff)
parent17c0e7107bed3d578864e6519f7f4e4c324c8f58 (diff)
downloadop-kernel-dev-a7f16d10b510f9ee3500af7831f2e3094fab3dca.zip
op-kernel-dev-a7f16d10b510f9ee3500af7831f2e3094fab3dca.tar.gz
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Mark atomic irq ops raw for 32bit legacy x86: Merge show_regs() x86: Macroise x86 cache descriptors x86-32: clean up rwsem inline asm statements x86: Merge asm/atomic_{32,64}.h x86: Sync asm/atomic_32.h and asm/atomic_64.h x86: Split atomic64_t functions into seperate headers x86-64: Modify memcpy()/memset() alternatives mechanism x86-64: Modify copy_user_generic() alternatives mechanism x86: Lift restriction on the location of FIX_BTMAP_* x86, core: Optimize hweight32()
Diffstat (limited to 'arch/x86/include/asm/alternative.h')
-rw-r--r--arch/x86/include/asm/alternative.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
index ac80b7d..f1e253c 100644
--- a/arch/x86/include/asm/alternative.h
+++ b/arch/x86/include/asm/alternative.h
@@ -130,11 +130,16 @@ static inline int alternatives_text_reserved(void *start, void *end)
asm volatile (ALTERNATIVE(oldinstr, newinstr, feature) \
: output : "i" (0), ## input)
+/* Like alternative_io, but for replacing a direct call with another one. */
+#define alternative_call(oldfunc, newfunc, feature, output, input...) \
+ asm volatile (ALTERNATIVE("call %P[old]", "call %P[new]", feature) \
+ : output : [old] "i" (oldfunc), [new] "i" (newfunc), ## input)
+
/*
* use this macro(s) if you need more than one output parameter
* in alternative_io
*/
-#define ASM_OUTPUT2(a, b) a, b
+#define ASM_OUTPUT2(a...) a
struct paravirt_patch_site;
#ifdef CONFIG_PARAVIRT
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