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authorJuergen Gross <jgross@suse.com>2014-08-28 06:44:11 +0200
committerStefano Stabellini <stefano.stabellini@eu.citrix.com>2014-09-23 13:36:19 +0000
commit8beb8d4c91d652617dc992de565ec9904361c33e (patch)
treed224ac744e751bea5b7454e5be20a3c8cf8c91a5 /drivers/xen/Kconfig
parente124c9a2c3c4c51555fe6f0bc214fe1b5cce3666 (diff)
xen-scsifront: Add Xen PV SCSI frontend driver
Introduces the Xen pvSCSI frontend. With pvSCSI it is possible for a Xen domU to issue SCSI commands to a SCSI LUN assigned to that domU. The SCSI commands are passed to the pvSCSI backend in a driver domain (usually Dom0) which is owner of the physical device. This allows e.g. to use SCSI tape drives in a Xen domU. The code is taken from the pvSCSI implementation in Xen done by Fujitsu based on Linux kernel 2.6.18. Changes from the original version are: - port to upstream kernel - put all code in just one source file - move module to appropriate location in kernel tree - adapt to Linux style guide - some minor code simplifications - replace constants with defines - remove not used defines - add support for larger SG lists by putting them in a granted page Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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