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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-09-04 18:40:05 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-19 12:59:07 +0200 |
| commit | 1c65577398589bb44ab0980f9b9d30804b48a5db (patch) | |
| tree | 4688c194c399de3a34769dbf5cd0bb31ab278d99 /include/asm-x86 | |
| parent | 2842e5bf3115193f05dc9dac20f940e7abf44c1a (diff) | |
| download | kernel-crypto-1c65577398589bb44ab0980f9b9d30804b48a5db.tar.gz kernel-crypto-1c65577398589bb44ab0980f9b9d30804b48a5db.tar.xz kernel-crypto-1c65577398589bb44ab0980f9b9d30804b48a5db.zip | |
AMD IOMMU: implement lazy IO/TLB flushing
The IO/TLB flushing on every unmaping operation is the most expensive
part in AMD IOMMU code and not strictly necessary. It is sufficient to
do the flush before any entries are reused. This is patch implements
lazy IO/TLB flushing which does exactly this.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/amd_iommu_types.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-x86/amd_iommu_types.h b/include/asm-x86/amd_iommu_types.h index dcc81206739..dcc472445ff 100644 --- a/include/asm-x86/amd_iommu_types.h +++ b/include/asm-x86/amd_iommu_types.h @@ -196,6 +196,9 @@ struct dma_ops_domain { * just calculate its address in constant time. */ u64 **pte_pages; + + /* This will be set to true when TLB needs to be flushed */ + bool need_flush; }; /* |