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intel-iommu: Clean up handling of "caching mode" vs. context flushing.

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It really doesn't make a lot of sense to have some of the logic to
handle caching vs. non-caching mode duplicated in qi_flush_context() and
__iommu_flush_context(), while the return value indicates whether the
caller should take other action which depends on the same thing.

Especially since qi_flush_context() thought it was returning something
entirely different anyway.

This patch makes qi_flush_context() and __iommu_flush_context() both
return void, removes the 'non_present_entry_flush' argument and makes
the only call site which _set_ that argument to 1 do the right thing.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-05-10 17:16:06 +01:00
parent fa3b6dcd52
commit 4c25a2c1b9
3 changed files with 28 additions and 45 deletions
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8
include/linux/intel-iommu.h
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@ -281,8 +281,8 @@ struct ir_table {
#endif
struct iommu_flush {
int (*flush_context)(struct intel_iommu *iommu, u16 did, u16 sid, u8 fm,
u64 type, int non_present_entry_flush);
void (*flush_context)(struct intel_iommu *iommu, u16 did, u16 sid,
u8 fm, u64 type);
int (*flush_iotlb)(struct intel_iommu *iommu, u16 did, u64 addr,
unsigned int size_order, u64 type, int non_present_entry_flush);
};
@ -339,8 +339,8 @@ extern void dmar_disable_qi(struct intel_iommu *iommu);
extern int dmar_reenable_qi(struct intel_iommu *iommu);
extern void qi_global_iec(struct intel_iommu *iommu);
extern int qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
u8 fm, u64 type, int non_present_entry_flush);
extern void qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
u8 fm, u64 type);
extern int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
unsigned int size_order, u64 type,
int non_present_entry_flush);