diff options
| author | Peter Xu <peterx@redhat.com> | 2017-04-07 18:59:15 +0800 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2017-04-20 15:22:41 -0300 |
| commit | dd4d607e40dcd2cb7646b510504880a70939d91b (patch) | |
| tree | 202101a219f01aab952a79e8ac0d75f295da75be /hw/i386/intel_iommu_internal.h | |
| parent | 558e0024a428a8f21605dc8aa026612ccc0f14cd (diff) | |
intel_iommu: enable remote IOTLB
This patch is based on Aviv Ben-David (<bd.aviv@gmail.com>)'s patch
upstream:
"IOMMU: enable intel_iommu map and unmap notifiers"
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg01453.html
However I removed/fixed some content, and added my own codes.
Instead of translate() every page for iotlb invalidations (which is
slower), we walk the pages when needed and notify in a hook function.
This patch enables vfio devices for VT-d emulation.
And, since we already have vhost DMAR support via device-iotlb, a
natural benefit that this patch brings is that vt-d enabled vhost can
live even without ATS capability now. Though more tests are needed.
Signed-off-by: Aviv Ben-David <bdaviv@cs.technion.ac.il>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: \"Michael S. Tsirkin\" <mst@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1491562755-23867-10-git-send-email-peterx@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'hw/i386/intel_iommu_internal.h')
| -rw-r--r-- | hw/i386/intel_iommu_internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index 41041219ba..29d67075f4 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -197,6 +197,7 @@ #define VTD_DOMAIN_ID_MASK ((1UL << VTD_DOMAIN_ID_SHIFT) - 1) #define VTD_CAP_ND (((VTD_DOMAIN_ID_SHIFT - 4) / 2) & 7ULL) #define VTD_MGAW 39 /* Maximum Guest Address Width */ +#define VTD_ADDRESS_SIZE (1ULL << VTD_MGAW) #define VTD_CAP_MGAW (((VTD_MGAW - 1) & 0x3fULL) << 16) #define VTD_MAMV 18ULL #define VTD_CAP_MAMV (VTD_MAMV << 48) |