search for: virtio_ldl_p

...9;s there to check in migration code? > Here's the extent of what balloon does on output: > > > while (iov_to_buf(elem->out_sg, elem->out_num, offset, &pfn, 4) == 4) > { > ram_addr_t pa; > ram_addr_t addr; > int p = virtio_ldl_p(vdev, &pfn); > > pa = (ram_addr_t) p << VIRTIO_BALLOON_PFN_SHIFT; > offset += 4; > > /* FIXME: remove get_system_memory(), but how? */ > section = memory_region_find(get_system_memory(), pa, 1); > if (!int1...

...9;s there to check in migration code? > Here's the extent of what balloon does on output: > > > while (iov_to_buf(elem->out_sg, elem->out_num, offset, &pfn, 4) == 4) > { > ram_addr_t pa; > ram_addr_t addr; > int p = virtio_ldl_p(vdev, &pfn); > > pa = (ram_addr_t) p << VIRTIO_BALLOON_PFN_SHIFT; > offset += 4; > > /* FIXME: remove get_system_memory(), but how? */ > section = memory_region_find(get_system_memory(), pa, 1); > if (!int1...

.../hw/virtio/virtio-balloon.c > +++ b/hw/virtio/virtio-balloon.c > @@ -340,37 +340,49 @@ static void virtio_balloon_handle_output(VirtIODevice *vdev, VirtQueue *vq) > while (iov_to_buf(elem->out_sg, elem->out_num, offset, &pfn, 4) == 4) { > unsigned int p = virtio_ldl_p(vdev, &pfn); > hwaddr pa; > + size_t handle_size = BALLOON_PAGE_SIZE; > > pa = (hwaddr) p << VIRTIO_BALLOON_PFN_SHIFT; > offset += 4; > > - section = memory_region_find(get_system_memory(), pa, > -...

...check the live migration code. What's there to check in migration code? Here's the extent of what balloon does on output: while (iov_to_buf(elem->out_sg, elem->out_num, offset, &pfn, 4) == 4) { ram_addr_t pa; ram_addr_t addr; int p = virtio_ldl_p(vdev, &pfn); pa = (ram_addr_t) p << VIRTIO_BALLOON_PFN_SHIFT; offset += 4; /* FIXME: remove get_system_memory(), but how? */ section = memory_region_find(get_system_memory(), pa, 1); if (!int128_nz(section.size) || !memory_regi...

> Subject: Re: [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration > optimization > > On Fri, Mar 04, 2016 at 09:08:44AM +0000, Li, Liang Z wrote: > > > On Fri, Mar 04, 2016 at 01:52:53AM +0000, Li, Liang Z wrote: > > > > > I wonder if it would be possible to avoid the kernel changes > > > > > by parsing /proc/self/pagemap - if that

> Subject: Re: [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration > optimization > > On Fri, Mar 04, 2016 at 09:08:44AM +0000, Li, Liang Z wrote: > > > On Fri, Mar 04, 2016 at 01:52:53AM +0000, Li, Liang Z wrote: > > > > > I wonder if it would be possible to avoid the kernel changes > > > > > by parsing /proc/self/pagemap - if that

...t; > Here's the extent of what balloon does on output: > > > > > > while (iov_to_buf(elem->out_sg, elem->out_num, offset, &pfn, 4) == 4) > > { > > ram_addr_t pa; > > ram_addr_t addr; > > int p = virtio_ldl_p(vdev, &pfn); > > > > pa = (ram_addr_t) p << VIRTIO_BALLOON_PFN_SHIFT; > > offset += 4; > > > > /* FIXME: remove get_system_memory(), but how? */ > > section = memory_region_find(get_system_memory(), pa,...

...4_t features) { VHostSCSI *s = VHOST_SCSI(vdev); diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 56c92fb..fbac794 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -627,8 +627,8 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, - uint32_t requested_features) +static uint64_t virtio_scsi_get_features(VirtIODevice *vdev, + uint64_t requested_fea...

...4_t features) { VHostSCSI *s = VHOST_SCSI(vdev); diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 56c92fb..fbac794 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -627,8 +627,8 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, - uint32_t requested_features) +static uint64_t virtio_scsi_get_features(VirtIODevice *vdev, + uint64_t requested_fea...

...res(&s->dev, kernel_feature_bits, features); } diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 203e624..088e688 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -608,7 +608,7 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, +static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, unsigned int index, uint32_t requested_features) { return requested_features; @@ -729,7...

...res(&s->dev, kernel_feature_bits, features); } diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 203e624..088e688 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -608,7 +608,7 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, +static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, unsigned int index, uint32_t requested_features) { return requested_features; @@ -729,7...

...4_t features) { VHostSCSI *s = VHOST_SCSI(vdev); diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 56c92fb..fbac794 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -627,8 +627,8 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, - uint32_t requested_features) +static uint64_t virtio_scsi_get_features(VirtIODevice *vdev, + uint64_t requested_fea...

...4_t features) { VHostSCSI *s = VHOST_SCSI(vdev); diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 56c92fb..fbac794 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -627,8 +627,8 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, - uint32_t requested_features) +static uint64_t virtio_scsi_get_features(VirtIODevice *vdev, + uint64_t requested_fea...

...NY_LAYOUT) == 0) { + if ((vdev->guest_features[0] & VIRTIO_F_ANY_LAYOUT) == 0) { req_size = req->elem.out_sg[0].iov_len; resp_size = req->elem.in_sg[0].iov_len; } @@ -627,7 +627,7 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, +static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, unsigned int index, uint32_t requested_features) { return requested_features; @@ -748,7...

...NY_LAYOUT) == 0) { + if ((vdev->guest_features[0] & VIRTIO_F_ANY_LAYOUT) == 0) { req_size = req->elem.out_sg[0].iov_len; resp_size = req->elem.in_sg[0].iov_len; } @@ -627,7 +627,7 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, vs->cdb_size = virtio_ldl_p(vdev, &scsiconf->cdb_size); } -static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, +static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, unsigned int index, uint32_t requested_features) { return requested_features; @@ -748,7...

Hi, here's the next version of my virtio-1 qemu patchset. Using virtio-1 virtio-blk and virtio-net devices with a guest kernel built from <1416829787-14252-1-git-send-email-mst at redhat.com> still seems to work for the virtio-ccw transport. Changes from v1: - rebased against current master - don't advertise VERSION_1 for all devices, make devices switch it on individually

Hi, here's the next version of my virtio-1 qemu patchset. Using virtio-1 virtio-blk and virtio-net devices with a guest kernel built from <1416829787-14252-1-git-send-email-mst at redhat.com> still seems to work for the virtio-ccw transport. Changes from v1: - rebased against current master - don't advertise VERSION_1 for all devices, make devices switch it on individually

Next version of virtio-1 patches for qemu. Only change from v2 is splitting out the vring accessors into a separate header file - should hopefully fix the build issues. Cornelia Huck (9): virtio: cull virtio_bus_set_vdev_features virtio: support more feature bits s390x/virtio-ccw: fix check for WRITE_FEAT virtio: introduce legacy virtio devices virtio: allow virtio-1 queue layout

Next version of virtio-1 patches for qemu. Only change from v2 is splitting out the vring accessors into a separate header file - should hopefully fix the build issues. Cornelia Huck (9): virtio: cull virtio_bus_set_vdev_features virtio: support more feature bits s390x/virtio-ccw: fix check for WRITE_FEAT virtio: introduce legacy virtio devices virtio: allow virtio-1 queue layout

Yet another version of the virtio-1 support patches. This one has seen some (very) light testing with the virtio-1 guest support patches currently on vhost-next. Changes from v3: - Add support for FEATURES_OK. We refuse to set features after the driver has set this in the status field, and we allow to fail setting the status if the features are inconsistent. - Add missing virtio-1 changes