diff options
| author | Aviv Ben-David <bd.aviv@gmail.com> | 2017-02-07 16:28:06 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-02-17 21:52:31 +0200 |
| commit | 3b40f0e53c2ebfcec8aabab7e91c11c5bd441ac0 (patch) | |
| tree | 38818f44ffdb67629ae33232036e1f3d05134b0c /include/hw/i386 | |
| parent | dfbd90e5b9b772b1c5a52bad9f6dbabb385a7dc2 (diff) | |
intel_iommu: add "caching-mode" option
This capability asks the guest to invalidate cache before each map operation.
We can use this invalidation to trap map operations in the hypervisor.
Signed-off-by: Aviv Ben-David <bd.aviv@gmail.com>
[peterx: using "caching-mode" instead of "cache-mode" to align with spec]
[peterx: re-write the subject to make it short and clear]
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Aviv Ben-David <bd.aviv@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/i386')
| -rw-r--r-- | include/hw/i386/intel_iommu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index 405c9d122e..fe645aa93a 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -257,6 +257,8 @@ struct IntelIOMMUState { uint8_t womask[DMAR_REG_SIZE]; /* WO (write only - read returns 0) */ uint32_t version; + bool caching_mode; /* RO - is cap CM enabled? */ + dma_addr_t root; /* Current root table pointer */ bool root_extended; /* Type of root table (extended or not) */ bool dmar_enabled; /* Set if DMA remapping is enabled */ |