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authorBorislav Petkov <borislav.petkov@amd.com>2012-05-22 12:53:45 +0200
committerIngo Molnar <mingo@kernel.org>2012-05-23 17:16:42 +0200
commite8f380e00840f694599e6ab42806639f7de26f11 (patch)
tree10568c5f17c4bc035abdf47225486df102cff9e6 /arch/x86/include/asm/bitops.h
parent239e7bad43dadc43ccf4bbf51f798189fd2cc120 (diff)
x86/bitops: Move BIT_64() for a wider use
Needed for shifting 64-bit values on 32-bit, like MSR values, for example. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frank Arnold <frank.arnold@amd.com> Link: http://lkml.kernel.org/r/1337684026-19740-1-git-send-email-bp@amd64.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/bitops.h')
-rw-r--r--arch/x86/include/asm/bitops.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index b97596e2b68c..a6983b277220 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -15,6 +15,8 @@
#include <linux/compiler.h>
#include <asm/alternative.h>
+#define BIT_64(n) (U64_C(1) << (n))
+
/*
* These have to be done with inline assembly: that way the bit-setting
* is guaranteed to be atomic. All bit operations return 0 if the bit

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