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authorLinus Torvalds <torvalds@linux-foundation.org>2013-12-04 21:45:21 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-12-04 21:45:21 -0800
commit53c6de50262a8edd6932bb59a32db7b9d92f8d67 (patch)
tree3200068f880aa9647e9184f15619345727f447a5 /arch/x86/include/asm/atomic.h
parent8ecffd7914484b728799dd31968f1339fae91593 (diff)
parent2885432aaf15c1b7e65c787bfe7c5fec428296f0 (diff)
Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 and EFI fixes from Peter Anvin: "Half of these are EFI-related: The by far biggest change is the change to hold off the deletion of a sysfs entry while a backend scan is in progress. This is to avoid calling kmemdup() while under a spinlock. The other major change is for each entry in the EFI pstore backend to get a unique identifier, as required by the pstore filesystem proper. The other changes are: A fix to the recent consolidation and optimization of using "asm goto" with read-modify-write operation, which broke the bitops; specifically in such a way that we could end up generating invalid code. A build hack to make sure we compile with -mno-sse. icc, and most likely future versions of gcc, can generate SSE instructions unless we tell it not to. A comment-only patch to a change the was due in part to an unpublished erratum; now when the erratum is published we want to add a comment explaining why" * 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic, doc: Justification for disabling IO APIC before Local APIC x86, bitops: Correct the assembly constraints to testing bitops x86-64, build: Always pass in -mno-sse efi-pstore: Make efi-pstore return a unique id x86/efi: Fix earlyprintk off-by-one bug efivars, efi-pstore: Hold off deletion of sysfs entry until the scan is completed
Diffstat (limited to 'arch/x86/include/asm/atomic.h')
-rw-r--r--arch/x86/include/asm/atomic.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h
index da31c8b8a92..b17f4f48ecd 100644
--- a/arch/x86/include/asm/atomic.h
+++ b/arch/x86/include/asm/atomic.h
@@ -77,7 +77,7 @@ static inline void atomic_sub(int i, atomic_t *v)
*/
static inline int atomic_sub_and_test(int i, atomic_t *v)
{
- GEN_BINARY_RMWcc(LOCK_PREFIX "subl", v->counter, i, "%0", "e");
+ GEN_BINARY_RMWcc(LOCK_PREFIX "subl", v->counter, "er", i, "%0", "e");
}
/**
@@ -141,7 +141,7 @@ static inline int atomic_inc_and_test(atomic_t *v)
*/
static inline int atomic_add_negative(int i, atomic_t *v)
{
- GEN_BINARY_RMWcc(LOCK_PREFIX "addl", v->counter, i, "%0", "s");
+ GEN_BINARY_RMWcc(LOCK_PREFIX "addl", v->counter, "er", i, "%0", "s");
}
/**