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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-15 05:28:47 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-15 05:28:47 +0100 |
| commit | b746f9c7941f227ad582b4f0bc981f3adcbc46b2 (patch) | |
| tree | fe3da3dedfe8d66f90cdcfa3d9ce847fdc411c20 /drivers/s390 | |
| parent | Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kern... (diff) | |
| parent | virtio_scsi: verify if queue is broken after virtqueue_get_buf() (diff) | |
| download | linux-b746f9c7941f227ad582b4f0bc981f3adcbc46b2.tar.xz linux-b746f9c7941f227ad582b4f0bc981f3adcbc46b2.zip | |
Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio updates from Rusty Russell:
"Nothing really exciting: some groundwork for changing virtio endian,
and some robustness fixes for broken virtio devices, plus minor
tweaks"
* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio_scsi: verify if queue is broken after virtqueue_get_buf()
x86, asmlinkage, lguest: Pass in globals into assembler statement
virtio: mmio: fix signature checking for BE guests
virtio_ring: adapt to notify() returning bool
virtio_net: verify if queue is broken after virtqueue_get_buf()
virtio_console: verify if queue is broken after virtqueue_get_buf()
virtio_blk: verify if queue is broken after virtqueue_get_buf()
virtio_ring: add new function virtqueue_is_broken()
virtio_test: verify if virtqueue_kick() succeeded
virtio_net: verify if virtqueue_kick() succeeded
virtio_ring: let virtqueue_{kick()/notify()} return a bool
virtio_ring: change host notification API
virtio_config: remove virtio_config_val
virtio: use size-based config accessors.
virtio_config: introduce size-based accessors.
virtio_ring: plug kmemleak false positive.
virtio: pm: use CONFIG_PM_SLEEP instead of CONFIG_PM
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/kvm/kvm_virtio.c | 8 | ||||
| -rw-r--r-- | drivers/s390/kvm/virtio_ccw.c | 5 |
2 files changed, 10 insertions, 3 deletions
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index af2166fa5159..1abd0db29915 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -166,11 +166,15 @@ static void kvm_reset(struct virtio_device *vdev) * make a hypercall. We hand the address of the virtqueue so the Host * knows which virtqueue we're talking about. */ -static void kvm_notify(struct virtqueue *vq) +static bool kvm_notify(struct virtqueue *vq) { + long rc; struct kvm_vqconfig *config = vq->priv; - kvm_hypercall1(KVM_S390_VIRTIO_NOTIFY, config->address); + rc = kvm_hypercall1(KVM_S390_VIRTIO_NOTIFY, config->address); + if (rc < 0) + return false; + return true; } /* diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 779dc5136291..d6297176ab85 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -162,7 +162,7 @@ static inline long do_kvm_notify(struct subchannel_id schid, return __rc; } -static void virtio_ccw_kvm_notify(struct virtqueue *vq) +static bool virtio_ccw_kvm_notify(struct virtqueue *vq) { struct virtio_ccw_vq_info *info = vq->priv; struct virtio_ccw_device *vcdev; @@ -171,6 +171,9 @@ static void virtio_ccw_kvm_notify(struct virtqueue *vq) vcdev = to_vc_device(info->vq->vdev); ccw_device_get_schid(vcdev->cdev, &schid); info->cookie = do_kvm_notify(schid, vq->index, info->cookie); + if (info->cookie < 0) + return false; + return true; } static int virtio_ccw_read_vq_conf(struct virtio_ccw_device *vcdev, |