diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2018-08-27 10:47:51 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-02 18:47:55 +0200 |
| commit | 0ea1472dc50a9488e87c4d19329c7d5c63eb7076 (patch) | |
| tree | 08376e81e4dd7fe0d4a14417c60a7c279398fc48 | |
| parent | 3829640049cf516d229620e5919b0ab66fd6ac86 (diff) | |
kvm: x86: Fix kvm_arch_fixup_msi_route for remap-less case
The AMD IOMMU does not (yet) support interrupt remapping. But
kvm_arch_fixup_msi_route assumes that all implementations do and crashes
when the AMD IOMMU is used in KVM mode.
Fixes: 8b5ed7dffa1f ("intel_iommu: add support for split irqchip")
Reported-by: Christopher Goldsworthy <christopher.goldsworthy@outlook.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <48ae78d8-58ec-8813-8680-6f407ea46041@siemens.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | target/i386/kvm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 0b2a07d3a4..de892db671 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -3669,6 +3669,10 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, MSIMessage src, dst; X86IOMMUClass *class = X86_IOMMU_GET_CLASS(iommu); + if (!class->int_remap) { + return 0; + } + src.address = route->u.msi.address_hi; src.address <<= VTD_MSI_ADDR_HI_SHIFT; src.address |= route->u.msi.address_lo; |