xemu/hw/block
Paulina Szubarczyk b6eb9b45f7 qdisk - hw/block/xen_disk: grant copy implementation
Copy data operated on during request from/to local buffers to/from
the grant references.

Before grant copy operation local buffers must be allocated what is
done by calling ioreq_init_copy_buffers. For the 'read' operation,
first, the qemu device invokes the read operation on local buffers
and on the completion grant copy is called and buffers are freed.
For the 'write' operation grant copy is performed before invoking
write by qemu device.

A new value 'feature_grant_copy' is added to recognize when the
grant copy operation is supported by a guest.

Signed-off-by: Paulina Szubarczyk <paulinaszubarczyk@gmail.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
2016-09-27 18:18:55 -07:00
..
dataplane virtio-blk: dataplane cleanup 2016-07-18 15:10:52 +01:00
block.c block/qdev: Allow configuring rerror/werror with qdev properties 2016-07-13 13:32:27 +02:00
cdrom.c block: Clean up includes 2016-01-20 13:36:23 +01:00
ecc.c block: Clean up includes 2016-01-20 13:36:23 +01:00
fdc.c portio: keep references on portio 2016-09-08 18:05:21 +04:00
hd-geometry.c qemu-common: stop including qemu/bswap.h from qemu-common.h 2016-05-19 16:42:28 +02:00
m25p80.c block: m25p80: Fix vmstate structure name 2016-09-06 19:52:18 +01:00
Makefile.objs block: Always compile virtio-blk dataplane 2014-09-22 11:39:51 +01:00
nand.c nand: Switch to byte-based block access 2016-05-12 15:22:09 +02:00
nvme.c nvme: bump PCI revision 2016-08-05 10:56:08 +02:00
nvme.h util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
onenand.c onenand: Switch to byte-based block access 2016-05-12 15:22:09 +02:00
pflash_cfi01.c pflash: make TYPE_CFI_PFLASH0{1,2} macros public 2016-06-29 14:03:46 +02:00
pflash_cfi02.c pflash: make TYPE_CFI_PFLASH0{1,2} macros public 2016-06-29 14:03:46 +02:00
tc58128.c block: Use DIV_ROUND_UP 2016-06-07 18:19:24 +03:00
trace-events trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
virtio-blk.c virtio-blk: rename virtio_device_info to virtio_blk_info 2016-09-13 11:00:56 +01:00
xen_blkif.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
xen_disk.c qdisk - hw/block/xen_disk: grant copy implementation 2016-09-27 18:18:55 -07:00