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[Qemu-devel] [STABLE 0.13][PATCH 2/6] virtio-blk: Fix migration of queue
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [STABLE 0.13][PATCH 2/6] virtio-blk: Fix migration of queued requests |
Date: |
Mon, 30 Aug 2010 18:53:49 +0200 |
in_sg[].iovec and out_sg[].ioved are pointer to (source) host memory and
therefore invalid after migration. When loading the device state we must
create a new mapping on the destination host.
Signed-off-by: Kevin Wolf <address@hidden>
(cherry picked from commit b6a4805b55b409134dc712677fdc4f6a8795e965)
---
hw/virtio-blk.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 490cd41..251779c 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -480,6 +480,11 @@ static int virtio_blk_load(QEMUFile *f, void *opaque, int
version_id)
qemu_get_buffer(f, (unsigned char*)&req->elem, sizeof(req->elem));
req->next = s->rq;
s->rq = req;
+
+ virtqueue_map_sg(req->elem.in_sg, req->elem.in_addr,
+ req->elem.in_num, 1);
+ virtqueue_map_sg(req->elem.out_sg, req->elem.out_addr,
+ req->elem.out_num, 0);
}
return 0;
--
1.7.2.2
- [Qemu-devel] [STABLE 0.13][PULL 0/6] Block patches for stable-0.13, Kevin Wolf, 2010/08/30
- [Qemu-devel] [STABLE 0.13][PATCH 1/6] virtio: Factor virtqueue_map_sg out, Kevin Wolf, 2010/08/30
- [Qemu-devel] [STABLE 0.13][PATCH 3/6] block: Fix image re-open in bdrv_commit, Kevin Wolf, 2010/08/30
- [Qemu-devel] [STABLE 0.13][PATCH 4/6] qemu-img rebase: Open new backing file read-only, Kevin Wolf, 2010/08/30
- [Qemu-devel] [STABLE 0.13][PATCH 6/6] posix-aio-compat: Fix async_conmtext for ioctl, Kevin Wolf, 2010/08/30
- [Qemu-devel] [STABLE 0.13][PATCH 5/6] vvfat: fat_chksum(): fix access above array bounds, Kevin Wolf, 2010/08/30
- [Qemu-devel] [STABLE 0.13][PATCH 2/6] virtio-blk: Fix migration of queued requests,
Kevin Wolf <=