diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2021-03-15 19:23:00 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-03-15 19:23:00 +0000 |
| commit | 2615a5e433aeb812c300d3a48e1a88e1303e2339 (patch) | |
| tree | 3edfb705db68fb72bf6fa634ca08ffd8bd88efe3 /hw | |
| parent | e7c6a8cf9f5c82aa152273e1c9e80d07b1b0c32c (diff) | |
| parent | fb0b154c801e3447e505de420195fb7038695941 (diff) | |
Merge remote-tracking branch 'remotes/stefanha-gitlab/tags/block-pull-request' into staging
Pull request
# gpg: Signature made Mon 15 Mar 2021 09:50:58 GMT
# gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8
* remotes/stefanha-gitlab/tags/block-pull-request:
virtio-blk: Respect discard granularity
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/block/virtio-blk.c | 8 | ||||
| -rw-r--r-- | hw/core/machine.c | 1 |
2 files changed, 8 insertions, 1 deletions
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index 3d2072cf75..d28979efb8 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -962,10 +962,14 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config) blkcfg.wce = blk_enable_write_cache(s->blk); virtio_stw_p(vdev, &blkcfg.num_queues, s->conf.num_queues); if (virtio_has_feature(s->host_features, VIRTIO_BLK_F_DISCARD)) { + uint32_t discard_granularity = conf->discard_granularity; + if (discard_granularity == -1 || !s->conf.report_discard_granularity) { + discard_granularity = blk_size; + } virtio_stl_p(vdev, &blkcfg.max_discard_sectors, s->conf.max_discard_sectors); virtio_stl_p(vdev, &blkcfg.discard_sector_alignment, - blk_size >> BDRV_SECTOR_BITS); + discard_granularity >> BDRV_SECTOR_BITS); /* * We support only one segment per request since multiple segments * are not widely used and there are no userspace APIs that allow @@ -1299,6 +1303,8 @@ static Property virtio_blk_properties[] = { IOThread *), DEFINE_PROP_BIT64("discard", VirtIOBlock, host_features, VIRTIO_BLK_F_DISCARD, true), + DEFINE_PROP_BOOL("report-discard-granularity", VirtIOBlock, + conf.report_discard_granularity, true), DEFINE_PROP_BIT64("write-zeroes", VirtIOBlock, host_features, VIRTIO_BLK_F_WRITE_ZEROES, true), DEFINE_PROP_UINT32("max-discard-sectors", VirtIOBlock, diff --git a/hw/core/machine.c b/hw/core/machine.c index 4386f57b5c..4c1a4a4c32 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -39,6 +39,7 @@ GlobalProperty hw_compat_5_2[] = { { "ICH9-LPC", "smm-compat", "on"}, { "PIIX4_PM", "smm-compat", "on"}, + { "virtio-blk-device", "report-discard-granularity", "off" }, }; const size_t hw_compat_5_2_len = G_N_ELEMENTS(hw_compat_5_2); |