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vfio: Add VM state change handler to know state of VM

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VM state change handler is called on change in VM's state. Based on
VM state, VFIO device state should be changed.
Added read/write helper functions for migration region.
Added function to set device_state.

Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Neo Jia <cjia@nvidia.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[aw: lx -> HWADDR_PRIx, remove redundant parens]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Kirti Wankhede 2020-10-26 15:06:15 +05:30 • committed by Alex Williamson
parent a9e271ec9b
commit 02a7e71b1e
3 changed files with 166 additions and 0 deletions
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4
include/hw/vfio/vfio-common.h
View file

@ -29,6 +29,7 @@
#ifdef CONFIG_LINUX
#include <linux/vfio.h>
#endif
#include "sysemu/sysemu.h"
#define VFIO_MSG_PREFIX "vfio %s: "
@ -58,7 +59,10 @@ typedef struct VFIORegion {
} VFIORegion;
typedef struct VFIOMigration {
VMChangeStateEntry *vm_state;
VFIORegion region;
uint32_t device_state;
int vm_running;
} VFIOMigration;
typedef struct VFIOAddressSpace {