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qemu/hw/virtio
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Jason Wang aebbdbee55 vhost: do not verify ring mappings when IOMMU is enabled 
When IOMMU is enabled, we store virtqueue metadata as iova (though it
may has _phys suffix) and access them through dma helpers. Any
translation failures could be reported by IOMMU.

In this case, trying to validate iova against gpa won't work and will
cause a false error reporting. So this patch bypasses the ring
verification if IOMMU is enabled which is similar to the behavior
before 0ca1fd2d68 that calls vhost_memory_map() which is a nop when
IOMMU is enabled.

Fixes: 0ca1fd2d68 ("vhost: Simplify ring verification checks")
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 		2018-04-16 19:11:38 +03:00
..
Makefile.objs stubs: move vhost stubs to stubs/vhost.o 2017-01-16 17:52:35 +01:00
trace-events vhost: Huge page align and merge 2018-03-20 16:40:37 +02:00
vhost-backend.c vhost: fix a memory leak 2017-08-02 00:13:25 +03:00
vhost-stub.c stubs: move vhost stubs to stubs/vhost.o 2017-01-16 17:52:35 +01:00
vhost-user.c vhost-user: back SET/GET_CONFIG requests with a protocol feature 2018-04-09 17:35:46 +03:00
vhost-vsock.c hw: use "qemu/osdep.h" as first #include in source files 2017-12-18 17:07:02 +03:00
vhost.c vhost: do not verify ring mappings when IOMMU is enabled 2018-04-16 19:11:38 +03:00
virtio-balloon.c qapi: Empty out qapi-schema.json 2018-03-02 13:45:50 -06:00
virtio-bus.c virtio: remove event notifier cleanup call on de-assign 2018-02-08 21:06:26 +02:00
virtio-crypto-pci.c virtio-crypto: Convert to DEFINE_PROP_LINK 2017-07-14 12:04:43 +02:00
virtio-crypto.c cryptodev: add vhost support 2018-03-01 18:26:17 +02:00
virtio-mmio.c virtio-mmio: switch to linux headers 2017-01-18 22:59:53 +02:00
virtio-pci.c virtio-pci: trivial fixes in error message 2018-03-01 16:25:36 +02:00
virtio-pci.h vhost-user-blk: introduce a new vhost-user-blk host device 2018-01-18 21:52:37 +02:00
virtio-rng.c virtio-rng: Convert to DEFINE_PROP_LINK 2017-07-14 12:04:42 +02:00
virtio.c virtio: improve virtio devices initialization time 2018-02-08 21:06:40 +02:00