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| author | Ben-Ami Yassour <benami@il.ibm.com> | 2008-09-14 03:48:28 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-10-15 14:25:04 +0200 |
| commit | 62c476c7c7f25a5b245b9902a935636e6316e58c (patch) | |
| tree | 6584591c7c345fcbb3c6d437203dc7f4a628573a /include/linux/kvm.h | |
| parent | 387179464257921eb9aa3d15cc3ff194f6945a7c (diff) | |
| download | lwn-62c476c7c7f25a5b245b9902a935636e6316e58c.tar.gz lwn-62c476c7c7f25a5b245b9902a935636e6316e58c.zip | |
KVM: Device Assignment with VT-d
Based on a patch by: Kay, Allen M <allen.m.kay@intel.com>
This patch enables PCI device assignment based on VT-d support.
When a device is assigned to the guest, the guest memory is pinned and
the mapping is updated in the VT-d IOMMU.
[Amit: Expose KVM_CAP_IOMMU so we can check if an IOMMU is present
and also control enable/disable from userspace]
Signed-off-by: Kay, Allen M <allen.m.kay@intel.com>
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com>
Signed-off-by: Amit Shah <amit.shah@qumranet.com>
Acked-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include/linux/kvm.h')
| -rw-r--r-- | include/linux/kvm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h index ef4bc6f89778..4269be171faf 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -384,6 +384,7 @@ struct kvm_trace_rec { #define KVM_CAP_COALESCED_MMIO 15 #define KVM_CAP_SYNC_MMU 16 /* Changes to host mmap are reflected in guest */ #define KVM_CAP_DEVICE_ASSIGNMENT 17 +#define KVM_CAP_IOMMU 18 /* * ioctls for VM fds @@ -495,4 +496,6 @@ struct kvm_assigned_irq { __u32 flags; }; +#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) + #endif |