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| author | Wei Wang <wei.wang2@amd.com> | 2012-01-12 13:50:50 +0100 |
|---|---|---|
| committer | Wei Wang <wei.wang2@amd.com> | 2012-01-12 13:50:50 +0100 |
| commit | 4547137c3e31bae4c6c89d1fad63b1928681715f (patch) | |
| tree | edb20a9aafd04e245b1d62f2f2738a2c6706cfbd /xen/arch/x86/hvm/intercept.c | |
| parent | 262bb227a4f27d0d18dfd2151798a884967db9b6 (diff) | |
| download | xen-4547137c3e31bae4c6c89d1fad63b1928681715f.tar.gz xen-4547137c3e31bae4c6c89d1fad63b1928681715f.tar.bz2 xen-4547137c3e31bae4c6c89d1fad63b1928681715f.zip | |
amd iommu: Add iommu emulation for hvm guest
ATS device driver that support PASID [1] and PRI [2] capabilites needs
to work with iommu driver in guest OS. We have to expose iommu
functionality to HVM guest, if we want assign ATS device to it. A new
hypervisor mmio handler is added to intercept iommu mmio accesses from
guest.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
[1] http://www.pcisig.com/specifications/pciexpress/specifications/ECN-PASID-ATS-2011-03-31.pdf
[2] http://www.pcisig.com/members/downloads/specifications/iov/ats_r1.1_26Jan09.pdf
Committed-by: Jan Beulich <jbeulich@suse.com>
Diffstat (limited to 'xen/arch/x86/hvm/intercept.c')
| -rw-r--r-- | xen/arch/x86/hvm/intercept.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/xen/arch/x86/hvm/intercept.c b/xen/arch/x86/hvm/intercept.c index be6bf95d8b..af22d11bcb 100644 --- a/xen/arch/x86/hvm/intercept.c +++ b/xen/arch/x86/hvm/intercept.c @@ -38,7 +38,8 @@ hvm_mmio_handlers[HVM_MMIO_HANDLER_NR] = &hpet_mmio_handler, &vlapic_mmio_handler, &vioapic_mmio_handler, - &msixtbl_mmio_handler + &msixtbl_mmio_handler, + &iommu_mmio_handler }; static int hvm_mmio_access(struct vcpu *v, |