OpenCloudOS-Kernel/drivers/xen/xen-pciback
Wei Liu ccc9d90a9a xenbus_client: Extend interface to support multi-page ring
Originally Xen PV drivers only use single-page ring to pass along
information. This might limit the throughput between frontend and
backend.

The patch extends Xenbus driver to support multi-page ring, which in
general should improve throughput if ring is the bottleneck. Changes to
various frontend / backend to adapt to the new interface are also
included.

Affected Xen drivers:
* blkfront/back
* netfront/back
* pcifront/back
* scsifront/back
* vtpmfront

The interface is documented, as before, in xenbus_client.c.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Cc: Konrad Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-04-15 10:56:47 +01:00
..
Makefile xen/pciback: Have 'passthrough' option instead of XEN_PCIDEV_BACKEND_PASS and XEN_PCIDEV_BACKEND_VPCI 2011-07-19 21:04:20 -04:00
conf_space.c xen-pciback: limit guest control of command register 2015-03-11 14:34:40 +00:00
conf_space.h xen-pciback: limit guest control of command register 2015-03-11 14:34:40 +00:00
conf_space_capability.c xen/pciback: Drop two backends, squash and cleanup some code. 2011-07-19 20:58:35 -04:00
conf_space_header.c xen-pciback: also support disabling of bus-mastering and memory-write-invalidate 2015-03-16 14:51:35 +00:00
conf_space_quirks.c xen/pciback: miscellaneous adjustments 2011-09-21 18:17:59 -04:00
conf_space_quirks.h xen/pciback: Drop two backends, squash and cleanup some code. 2011-07-19 20:58:35 -04:00
passthrough.c xen/pciback: Don't deadlock when unbinding. 2014-12-04 12:41:58 +00:00
pci_stub.c xen/pciback: Don't print scary messages when unsupported by hypervisor. 2015-03-16 14:49:14 +00:00
pciback.h xen/pciback: Don't deadlock when unbinding. 2014-12-04 12:41:58 +00:00
pciback_ops.c arch: Mass conversion of smp_mb__*() 2014-04-18 14:20:48 +02:00
vpci.c xen/pciback: Don't deadlock when unbinding. 2014-12-04 12:41:58 +00:00
xenbus.c xenbus_client: Extend interface to support multi-page ring 2015-04-15 10:56:47 +01:00