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| author | Stefano Garzarella <sgarzare@redhat.com> | 2019-02-21 11:33:07 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2019-02-22 09:42:16 +0000 |
| commit | 5c81161f804144b146607f890e84613a4cbad95c (patch) | |
| tree | df55db0d4d94ecb8f75a3f62c3e2e789425d2d2b /hw/net | |
| parent | bbe8bd4d85d80442f87774d7bffaca11f2c02b9b (diff) | |
| download | qemu-5c81161f804144b146607f890e84613a4cbad95c.zip qemu-5c81161f804144b146607f890e84613a4cbad95c.tar.gz qemu-5c81161f804144b146607f890e84613a4cbad95c.tar.bz2 | |
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 'hw/net')
0 files changed, 0 insertions, 0 deletions