From f94682dde5ed23eed13533a37dfce942e60ade4e Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Mon, 6 Mar 2017 18:32:29 +0200 Subject: virtio: add context flag to find vqs Allows maintaining extra context per vq. For ease of use, passing in NULL is legal and disables the feature for all vqs. Includes fixes by Christian for s390, acked by Cornelia. Signed-off-by: Christian Borntraeger Acked-by: Cornelia Huck Signed-off-by: Michael S. Tsirkin --- drivers/s390/virtio/kvm_virtio.c | 8 +++++--- drivers/s390/virtio/virtio_ccw.c | 7 ++++--- 2 files changed, 9 insertions(+), 6 deletions(-) (limited to 'drivers/s390/virtio') diff --git a/drivers/s390/virtio/kvm_virtio.c b/drivers/s390/virtio/kvm_virtio.c index 2ce0b3eb2efe..a99d09a11f05 100644 --- a/drivers/s390/virtio/kvm_virtio.c +++ b/drivers/s390/virtio/kvm_virtio.c @@ -189,7 +189,7 @@ static bool kvm_notify(struct virtqueue *vq) static struct virtqueue *kvm_find_vq(struct virtio_device *vdev, unsigned index, void (*callback)(struct virtqueue *vq), - const char *name) + const char *name, bool ctx) { struct kvm_device *kdev = to_kvmdev(vdev); struct kvm_vqconfig *config; @@ -211,7 +211,7 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev, goto out; vq = vring_new_virtqueue(index, config->num, KVM_S390_VIRTIO_RING_ALIGN, - vdev, true, (void *) config->address, + vdev, true, ctx, (void *) config->address, kvm_notify, callback, name); if (!vq) { err = -ENOMEM; @@ -256,6 +256,7 @@ static int kvm_find_vqs(struct virtio_device *vdev, unsigned nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], + const bool *ctx, struct irq_affinity *desc) { struct kvm_device *kdev = to_kvmdev(vdev); @@ -266,7 +267,8 @@ static int kvm_find_vqs(struct virtio_device *vdev, unsigned nvqs, return -ENOENT; for (i = 0; i < nvqs; ++i) { - vqs[i] = kvm_find_vq(vdev, i, callbacks[i], names[i]); + vqs[i] = kvm_find_vq(vdev, i, callbacks[i], names[i], + ctx ? ctx[i] : false); if (IS_ERR(vqs[i])) goto error; } diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index 0ed209f3d8b0..2a76ea78a0bf 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -484,7 +484,7 @@ static void virtio_ccw_del_vqs(struct virtio_device *vdev) static struct virtqueue *virtio_ccw_setup_vq(struct virtio_device *vdev, int i, vq_callback_t *callback, - const char *name, + const char *name, bool ctx, struct ccw1 *ccw) { struct virtio_ccw_device *vcdev = to_vc_device(vdev); @@ -522,7 +522,7 @@ static struct virtqueue *virtio_ccw_setup_vq(struct virtio_device *vdev, } vq = vring_new_virtqueue(i, info->num, KVM_VIRTIO_CCW_RING_ALIGN, vdev, - true, info->queue, virtio_ccw_kvm_notify, + true, ctx, info->queue, virtio_ccw_kvm_notify, callback, name); if (!vq) { /* For now, we fail if we can't get the requested size. */ @@ -629,6 +629,7 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, struct virtqueue *vqs[], vq_callback_t *callbacks[], const char * const names[], + const bool *ctx, struct irq_affinity *desc) { struct virtio_ccw_device *vcdev = to_vc_device(vdev); @@ -642,7 +643,7 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, for (i = 0; i < nvqs; ++i) { vqs[i] = virtio_ccw_setup_vq(vdev, i, callbacks[i], names[i], - ccw); + ctx ? ctx[i] : false, ccw); if (IS_ERR(vqs[i])) { ret = PTR_ERR(vqs[i]); vqs[i] = NULL; -- cgit v1.2.3-59-g8ed1b