On Wed, Sep 21, 2022 at 11:27:29AM +0300, Alvaro Karsz wrote: > Support for the VIRTIO_BLK_F_SECURE_ERASE VirtIO feature. > > A device that offers this feature can receive VIRTIO_BLK_T_SECURE_ERASE > commands. > > A device which supports this feature has the following fields in the > virtio config: > > - max_secure_erase_sectors > - max_secure_erase_seg > - secure_erase_sector_alignment > > max_secure_erase_sectors and secure_erase_sector_alignment are expressed > in 512-byte units. > > Every secure erase command has the following fields: > > - sectors: The starting offset in 512-byte units. > - num_sectors: The number of sectors. > > Signed-off-by: Alvaro Karsz <alvaro.karsz@xxxxxxxxxxxxx> > --- > v2: > - Set queue max discard segments as the minimum between > max_secure_erase_seg and max_discard_seg. > - Set queue discard granularity as the minimum between > secure_erase_sector_alignment and discard_sector_alignment. > > v3: > - Usage of min_not_zero. > - Fail probe if any of the secure erase parameters in the virtio > config is 0. > - Add a comment explaining why we use the minimum between the discard > and secure erase limits. > --- > drivers/block/virtio_blk.c | 110 ++++++++++++++++++++++++++------ > include/uapi/linux/virtio_blk.h | 19 ++++++ > 2 files changed, 111 insertions(+), 18 deletions(-) Reviewed-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
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