Commit 415ffdde authored by Tom Yan's avatar Tom Yan Committed by Tejun Heo

libata-scsi: set CmdQue bit in standard INQUIRY data to 1

Avoid performance bottleneck when being SCSI pass-through'd to
virtual machines with other OSes (e.g. Windows) via virtio-scsi
and scsi-block in qemu.

Ref.: https://github.com/YanVugenfirer/kvm-guest-drivers-windows/issues/63Signed-off-by: default avatarTom Yan <tom.ty89@gmail.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 0c12735e
...@@ -2097,7 +2097,10 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) ...@@ -2097,7 +2097,10 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
0, 0,
0x5, /* claim SPC-3 version compatibility */ 0x5, /* claim SPC-3 version compatibility */
2, 2,
95 - 4 95 - 4,
0,
0,
2
}; };
VPRINTK("ENTER\n"); VPRINTK("ENTER\n");
......
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