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vfio: Introduce a new header file for external migration services

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The migration core subsystem makes use of the VFIO migration API to
collect statistics on the number of bytes transferred. These services
are declared in "hw/vfio/vfio-common.h" which also contains VFIO
internal declarations. Move the migration declarations into a new
header file "hw/vfio/vfio-migration.h" to reduce the exposure of VFIO
internals.

While at it, use a 'vfio_migration_' prefix for these services.

To be noted, vfio_migration_add_bytes_transferred() is a VFIO
migration internal service which we will be moved in the subsequent
patches.

Cc: Kirti Wankhede <kwankhede@nvidia.com>
Cc: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Prasad Pandit <pjp@fedoraproject.org>
Reviewed-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Avihai Horon <avihaih@nvidia.com>
Link: https://lore.kernel.org/qemu-devel/20250326075122.1299361-4-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Cédric Le Goater 2025-03-26 08:50:48 +01:00
parent 426ffab477
commit e1d4ea53d6
5 changed files with 30 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

8
migration/target.c
View file

@ -11,21 +11,21 @@
#include CONFIG_DEVICES
#ifdef CONFIG_VFIO
#include "hw/vfio/vfio-common.h"
#include "hw/vfio/vfio-migration.h"
#endif
#ifdef CONFIG_VFIO
void migration_populate_vfio_info(MigrationInfo *info)
{
if (vfio_mig_active()) {
if (vfio_migration_active()) {
info->vfio = g_malloc0(sizeof(*info->vfio));
info->vfio->transferred = vfio_mig_bytes_transferred();
info->vfio->transferred = vfio_migration_bytes_transferred();
}
}
void migration_reset_vfio_bytes_transferred(void)
{
vfio_mig_reset_bytes_transferred();
vfio_migration_reset_bytes_transferred();
}
#else
void migration_populate_vfio_info(MigrationInfo *info)