| commit | 336a6915bc7089fb20fea4ba99972ad9a97c5f52 | |
| author | Paolo Bonzini <pbonzini@redhat.com> | |
| Tue, 25 Oct 2011 10:53:37 +0000 (25 12:53 +0200) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Fri, 28 Oct 2011 17:25:52 +0000 (28 19:25 +0200) | ||
| tree | 66ab2d943da8057f0b6829021ab8cff69c19fc31 | treesnapshot (tar.gz zip) |
| parent | 71544d30a6f8b91574552a61cd5bd122a77e82d1 | commitdiff |
scsi-disk: add scsi-block for device passthrough
scsi-block is a new device that supports device passthrough of Linux
block devices (i.e. /dev/sda, not /dev/sg0). It uses SG_IO for commands
other than I/O commands, and regular AIO read/writes for I/O commands.
Besides being simpler to configure (no mapping required to scsi-generic
device names), this removes the need for a large bounce buffer and,
in the future, will get scatter/gather support for free from scsi-disk.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
scsi-block is a new device that supports device passthrough of Linux
block devices (i.e. /dev/sda, not /dev/sg0). It uses SG_IO for commands
other than I/O commands, and regular AIO read/writes for I/O commands.
Besides being simpler to configure (no mapping required to scsi-generic
device names), this removes the need for a large bounce buffer and,
in the future, will get scatter/gather support for free from scsi-disk.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| hw/scsi-disk.c | diffblobblamehistory |