Merge tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

pc,virtio: fixes

Several bugfixes, they all look very safe to me. Revert
seed support since we aren't any closer to a proper fix.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# -----BEGIN PGP SIGNATURE-----
#
# iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmL9IIQPHG1zdEByZWRo
# YXQuY29tAAoJECgfDbjSjVRpKCkH/2KjgmgG2BpeSm5WHm2ySMZ8aNactDhjc/zg
# S2iFMPRx6at4fagErT0h4hdI2SunbWz+dH8v6wdPmiIX//HNRUiZPW6vItib3aaN
# b6IxG+yWasRxFhLMZ41634vCUmnISkCsbMwJYTUMZjUV3iuEVnK8rQpIuGIkmvYK
# nt3Y3TLospn19ZrTbV00flghHnmU4WIZkyJv7T64bvvlgxITIw/02XxAI5QvhWb9
# qANmT+T9IPsZXdXOGj9W2d23Ejl9fRfvJSgRJsmxcOH24ozDUNGfia/ZDuq7J9rB
# NZ+g29j27oU5hdazOZR5e9q5SaFfaNZ3uYsU/A+lZkt/9+7G1u0=
# =soZc
# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 17 Aug 2022 10:08:20 AM PDT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu:
  virtio-pci: don't touch pci on virtio reset
  tests: acpi: silence applesmc warning about invalid key
  hw/cxl: Correctly handle variable sized mailbox input payloads.
  hw/cxl: Fix Get LSA input payload size which should be 8 bytes.
  hw/cxl: Add stub write function for RO MemoryRegionOps entries.
  hw/cxl: Fix wrong query of target ports
  hw/cxl: Fix memory leak in error paths
  x86: disable rng seeding via setup_data
  hw/virtio: fix vhost_user_read tracepoint
  hw/virtio: handle un-configured shutdown in virtio-pci
  hw/virtio: gracefully handle unset vhost_dev vdev
  virtio-scsi: fix race in virtio_scsi_dataplane_start()

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 7 insertions, 3 deletions

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 0827d631c0..f758f177bb 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -306,7 +306,7 @@ static inline void vhost_dev_log_resize(struct vhost_dev *dev, uint64_t size)
     dev->log_size = size;
 }
 
-static int vhost_dev_has_iommu(struct vhost_dev *dev)
+static bool vhost_dev_has_iommu(struct vhost_dev *dev)
 {
     VirtIODevice *vdev = dev->vdev;
 
@@ -316,8 +316,12 @@ static int vhost_dev_has_iommu(struct vhost_dev *dev)
      * does not have IOMMU, there's no need to enable this feature
      * which may cause unnecessary IOTLB miss/update transactions.
      */
-    return virtio_bus_device_iommu_enabled(vdev) &&
-           virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);
+    if (vdev) {
+        return virtio_bus_device_iommu_enabled(vdev) &&
+            virtio_host_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);
+    } else {
+        return false;
+    }
 }
 
 static void *vhost_memory_map(struct vhost_dev *dev, hwaddr addr,