motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-05 16:53:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

vfio: Make vfio_un/block_multiple_devices_migration() static

Browse source 
Both of these routines are only used in file "migration.c". Move them
there.

Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Link: https://lore.kernel.org/qemu-devel/20250318095415.670319-5-clg@redhat.com
Reviewed-by: John Levon <john.levon@nutanix.com>
Link: https://lore.kernel.org/qemu-devel/20250326075122.1299361-5-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Cédric Le Goater 2025-03-26 08:50:49 +01:00
parent e1d4ea53d6
commit 0a73045687
3 changed files with 59 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

59
hw/vfio/migration.c
View file

@ -1022,6 +1022,65 @@ static int vfio_migration_init(VFIODevice *vbasedev)
return 0;
}
static Error *multiple_devices_migration_blocker;
/*
* Multiple devices migration is allowed only if all devices support P2P
* migration. Single device migration is allowed regardless of P2P migration
* support.
*/
static bool vfio_multiple_devices_migration_is_supported(void)
{
VFIODevice *vbasedev;
unsigned int device_num = 0;
bool all_support_p2p = true;
QLIST_FOREACH(vbasedev, &vfio_device_list, global_next) {
if (vbasedev->migration) {
device_num++;
if (!(vbasedev->migration->mig_flags & VFIO_MIGRATION_P2P)) {
all_support_p2p = false;
}
}
}
return all_support_p2p || device_num <= 1;
}
static int vfio_block_multiple_devices_migration(VFIODevice *vbasedev, Error **errp)
{
if (vfio_multiple_devices_migration_is_supported()) {
return 0;
}
if (vbasedev->enable_migration == ON_OFF_AUTO_ON) {
error_setg(errp, "Multiple VFIO devices migration is supported only if "
"all of them support P2P migration");
return -EINVAL;
}
if (multiple_devices_migration_blocker) {
return 0;
}
error_setg(&multiple_devices_migration_blocker,
"Multiple VFIO devices migration is supported only if all of "
"them support P2P migration");
return migrate_add_blocker_normal(&multiple_devices_migration_blocker,
errp);
}
static void vfio_unblock_multiple_devices_migration(void)
{
if (!multiple_devices_migration_blocker ||
!vfio_multiple_devices_migration_is_supported()) {
return;
}
migrate_del_blocker(&multiple_devices_migration_blocker);
}
static void vfio_migration_deinit(VFIODevice *vbasedev)
{
VFIOMigration *migration = vbasedev->migration;