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| author | Stefano Garzarella | 2019-02-21 11:33:07 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi | 2019-02-22 10:42:16 +0100 |
| commit | 5c81161f804144b146607f890e84613a4cbad95c (patch) | |
| tree | df55db0d4d94ecb8f75a3f62c3e2e789425d2d2b /scripts/modules/module_block.py | |
| parent | virtio-blk: add host_features field in VirtIOBlock (diff) | |
| download | qemu-5c81161f804144b146607f890e84613a4cbad95c.tar.gz qemu-5c81161f804144b146607f890e84613a4cbad95c.tar.xz qemu-5c81161f804144b146607f890e84613a4cbad95c.zip | |
virtio-blk: add "discard" and "write-zeroes" properties
In order to avoid migration issues, we enable DISCARD and
WRITE_ZEROES features only for machine type >= 4.0
As discussed with Michael S. Tsirkin and Stefan Hajnoczi on the
list [1], DISCARD operation should not have security implications
(eg. page cache attacks), so we can enable it by default.
[1] https://lists.gnu.org/archive/html/qemu-devel/2019-02/msg00504.html
Suggested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20190221103314.58500-4-sgarzare@redhat.com
Message-Id: <20190221103314.58500-4-sgarzare@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts/modules/module_block.py')
0 files changed, 0 insertions, 0 deletions