> -----Original Message----- > From: devel [mailto:driverdev-devel-bounces@xxxxxxxxxxxxxxxxxxxxxx] On > Behalf Of K. Y. Srinivasan > Sent: Tuesday, December 16, 2014 1:22 PM > To: gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > devel@xxxxxxxxxxxxxxxxxxxxxx; ohering@xxxxxxxx; > jbottomley@xxxxxxxxxxxxx; hch@xxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx > Subject: [PATCH 4/4] Drivers: scsi: storvsc: Force SPC-3 compliance on win8 > and win8 r2 hosts > > On win8 and win8 r2 hosts force SPC-3 compliance for MSFT virtual disks. > Ubuntu has been carrying a similar patch outside the tree for a while now. > Starting with win10, the host will support SPC-3 compliance. Based on all the > testing that has been done on win8 and win8 r2 hosts, we are comfortable > claiming SPC-3 compliance on these hosts as well. This will enable TRIM > support on these hosts. > > Suggested by: James Bottomley > <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> > Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> Reviewed-by: Long Li <longli@xxxxxxxxxxxxx> > --- > drivers/scsi/storvsc_drv.c | 13 +++++++++++++ > 1 files changed, 13 insertions(+), 0 deletions(-) > > diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index > fdc5164..7487e07 100644 > --- a/drivers/scsi/storvsc_drv.c > +++ b/drivers/scsi/storvsc_drv.c > @@ -1468,6 +1468,19 @@ static int storvsc_device_configure(struct > scsi_device *sdevice) > */ > sdevice->sdev_bflags |= msft_blist_flags; > > + /* > + * If the host is WIN8 or WIN8 R2, claim conformance to SPC-3 > + * if the device is a MSFT virtual device. > + */ > + if (!strncmp(sdevice->vendor, "Msft", 4)) { > + switch (vmbus_proto_version) { > + case VERSION_WIN8: > + case VERSION_WIN8_1: > + sdevice->scsi_level = SCSI_SPC_3; > + break; > + } > + } > + > return 0; > } > > -- > 1.7.4.1 > > _______________________________________________ > devel mailing list > devel@xxxxxxxxxxxxxxxxxxxxxx > http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
