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virtio-gpu: add live migration support

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Store some additional state for cursor and resource backing storage,
so we can write out and reload things.  Implement vmsave+vmload for
2d mode.  Continue blocking live migration in 3d/virgl mode.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1464009727-7753-1-git-send-email-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2016-05-23 15:22:07 +02:00
parent 4e68a0ee17
commit 0c244e50ee
4 changed files with 198 additions and 8 deletions
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4
include/hw/virtio/virtio-gpu.h
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@ -32,6 +32,7 @@ struct virtio_gpu_simple_resource {
uint32_t width;
uint32_t height;
uint32_t format;
uint64_t *addrs;
struct iovec *iov;
unsigned int iov_cnt;
uint32_t scanout_bitmask;
@ -46,6 +47,7 @@ struct virtio_gpu_scanout {
int x, y;
int invalidate;
uint32_t resource_id;
struct virtio_gpu_update_cursor cursor;
QEMUCursor *current_cursor;
};
@ -150,7 +152,7 @@ void virtio_gpu_get_display_info(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd);
int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing *ab,
struct virtio_gpu_ctrl_command *cmd,
struct iovec **iov);
uint64_t **addr, struct iovec **iov);
void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count);
void virtio_gpu_process_cmdq(VirtIOGPU *g);