* [PATCH resend 1/2] libata-scsi: set CmdQue bit in standard INQUIRY data to 1
@ 2016-07-12 13:29 tom.ty89
0 siblings, 0 replies; only message in thread
From: tom.ty89 @ 2016-07-12 13:29 UTC (permalink / raw)
To: tj; +Cc: linux-ide, linux-scsi, Tom Yan
From: Tom Yan <tom.ty89@gmail.com>
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/63
Signed-off-by: Tom Yan <tom.ty89@gmail.com>
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index bfec66f..0a35164 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2097,7 +2097,10 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
0,
0x5, /* claim SPC-3 version compatibility */
2,
- 95 - 4
+ 95 - 4,
+ 0,
+ 0,
+ 2
};
VPRINTK("ENTER\n");
--
2.9.0
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2016-07-12 13:29 [PATCH resend 1/2] libata-scsi: set CmdQue bit in standard INQUIRY data to 1 tom.ty89
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