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authorThomas Gleixner <tglx@linutronix.de>2011-07-19 16:19:51 +0200
committerIngo Molnar <mingo@elte.hu>2011-09-13 11:12:17 +0200
commit1f5b3c3fd2d73d6b30e9ef6dcbf131a791d5cbbd (patch)
tree1d24f2510bd8c57f5e026bf9a7ff93999ed39577 /include/linux/intel-iommu.h
parent289b4e7a48d91fbef7af819020d826ad9f49f568 (diff)
locking, x86, iommu: Annotate iommu->register_lock as raw
The iommu->register_lock can be taken in atomic context and therefore must not be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/intel-iommu.h')
-rw-r--r--include/linux/intel-iommu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 9310c699a37d..19728c462399 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -311,7 +311,7 @@ struct intel_iommu {
u64 cap;
u64 ecap;
u32 gcmd; /* Holds TE, EAFL. Don't need SRTP, SFL, WBF */
- spinlock_t register_lock; /* protect register handling */
+ raw_spinlock_t register_lock; /* protect register handling */
int seq_id; /* sequence id of the iommu */
int agaw; /* agaw of this iommu */
int msagaw; /* max sagaw of this iommu */