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commit ed79cc87302bf7fbc87f05d655b998f866b4fed8
parent e33c1b9923775d17ad246946fe67fcb9be288677
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Wed, 10 Apr 2019 06:42:51 -1000

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Several fixes, add more reviewers to the list"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio: Honour 'may_reduce_num' in vring_create_virtqueue
  MAiNTAINERS: add Paolo, Stefan for virtio blk/scsi
  virtio_pci: fix a NULL pointer reference in vp_del_vqs

Diffstat:
MMAINTAINERS | 15++++++++++++++-
Mdrivers/virtio/virtio_pci_common.c | 8+++++---
Mdrivers/virtio/virtio_ring.c | 2++
Minclude/linux/virtio_ring.h | 2+-
4 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS @@ -16509,7 +16509,7 @@ F: drivers/char/virtio_console.c F: include/linux/virtio_console.h F: include/uapi/linux/virtio_console.h -VIRTIO CORE, NET AND BLOCK DRIVERS +VIRTIO CORE AND NET DRIVERS M: "Michael S. Tsirkin" <mst@redhat.com> M: Jason Wang <jasowang@redhat.com> L: virtualization@lists.linux-foundation.org @@ -16524,6 +16524,19 @@ F: include/uapi/linux/virtio_*.h F: drivers/crypto/virtio/ F: mm/balloon_compaction.c +VIRTIO BLOCK AND SCSI DRIVERS +M: "Michael S. Tsirkin" <mst@redhat.com> +M: Jason Wang <jasowang@redhat.com> +R: Paolo Bonzini <pbonzini@redhat.com> +R: Stefan Hajnoczi <stefanha@redhat.com> +L: virtualization@lists.linux-foundation.org +S: Maintained +F: drivers/block/virtio_blk.c +F: drivers/scsi/virtio_scsi.c +F: include/uapi/linux/virtio_blk.h +F: include/uapi/linux/virtio_scsi.h +F: drivers/vhost/scsi.c + VIRTIO CRYPTO DRIVER M: Gonglei <arei.gonglei@huawei.com> L: virtualization@lists.linux-foundation.org diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c @@ -255,9 +255,11 @@ void vp_del_vqs(struct virtio_device *vdev) for (i = 0; i < vp_dev->msix_used_vectors; ++i) free_irq(pci_irq_vector(vp_dev->pci_dev, i), vp_dev); - for (i = 0; i < vp_dev->msix_vectors; i++) - if (vp_dev->msix_affinity_masks[i]) - free_cpumask_var(vp_dev->msix_affinity_masks[i]); + if (vp_dev->msix_affinity_masks) { + for (i = 0; i < vp_dev->msix_vectors; i++) + if (vp_dev->msix_affinity_masks[i]) + free_cpumask_var(vp_dev->msix_affinity_masks[i]); + } if (vp_dev->msix_enabled) { /* Disable the vector used for configuration */ diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c @@ -882,6 +882,8 @@ static struct virtqueue *vring_create_virtqueue_split( GFP_KERNEL|__GFP_NOWARN|__GFP_ZERO); if (queue) break; + if (!may_reduce_num) + return NULL; } if (!num) diff --git a/include/linux/virtio_ring.h b/include/linux/virtio_ring.h @@ -63,7 +63,7 @@ struct virtqueue; /* * Creates a virtqueue and allocates the descriptor ring. If * may_reduce_num is set, then this may allocate a smaller ring than - * expected. The caller should query virtqueue_get_ring_size to learn + * expected. The caller should query virtqueue_get_vring_size to learn * the actual size of the ring. */ struct virtqueue *vring_create_virtqueue(unsigned int index,