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| author | Peter Xu <peterx@redhat.com> | 2018-10-09 15:45:43 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2018-11-05 13:24:02 -0500 |
| commit | c28b535d083d0a263d38d9ceeada83cdae8c64f0 (patch) | |
| tree | 5d923f564c469892ab707a98dc1e86e2c75a00a8 /hw/misc/pci-testdev.c | |
| parent | 95ecd3df7815b4bc4f9a0f47e1c64d81434715aa (diff) | |
| download | focaccia-qemu-c28b535d083d0a263d38d9ceeada83cdae8c64f0.tar.gz focaccia-qemu-c28b535d083d0a263d38d9ceeada83cdae8c64f0.zip | |
intel_iommu: handle invalid ce for shadow sync
We should handle VTD_FR_CONTEXT_ENTRY_P properly when synchronizing shadow page tables. Having invalid context entry there is perfectly valid when we move a device out of an existing domain. When that happens, instead of posting an error we invalidate the whole region. Without this patch, QEMU will crash if we do these steps: (1) start QEMU with VT-d IOMMU and two 10G NICs (ixgbe) (2) bind the NICs with vfio-pci in the guest (3) start testpmd with the NICs applied (4) stop testpmd (5) rebind the NIC back to ixgbe kernel driver The patch should fix it. Reported-by: Pei Zhang <pezhang@redhat.com> Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1627272 Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/misc/pci-testdev.c')
0 files changed, 0 insertions, 0 deletions