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vfio: vfio_find_ram_discard_listener

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Define vfio_find_ram_discard_listener as a subroutine so additional calls to
it may be added in a subsequent patch.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Link: https://lore.kernel.org/qemu-devel/1748546679-154091-8-git-send-email-steven.sistare@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Steve Sistare 2025-05-29 12:24:03 -07:00 • committed by Cédric Le Goater
parent 9942c71183
commit 2372f8d94a
2 changed files with 25 additions and 13 deletions
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35
hw/vfio/listener.c
View file

@ -456,6 +456,26 @@ static void vfio_device_error_append(VFIODevice *vbasedev, Error **errp)
} }
} }
VFIORamDiscardListener *vfio_find_ram_discard_listener(
VFIOContainerBase *bcontainer, MemoryRegionSection *section)
{
VFIORamDiscardListener *vrdl = NULL;
QLIST_FOREACH(vrdl, &bcontainer->vrdl_list, next) {
if (vrdl->mr == section->mr &&
vrdl->offset_within_address_space ==
section->offset_within_address_space) {
break;
}
}
if (!vrdl) {
hw_error("vfio: Trying to sync missing RAM discard listener");
/* does not return */
}
return vrdl;
}
static void vfio_listener_region_add(MemoryListener *listener, static void vfio_listener_region_add(MemoryListener *listener,
MemoryRegionSection *section) MemoryRegionSection *section)
{ {
@ -1086,19 +1106,8 @@ vfio_sync_ram_discard_listener_dirty_bitmap(VFIOContainerBase *bcontainer,
MemoryRegionSection *section) MemoryRegionSection *section)
{ {
RamDiscardManager *rdm = memory_region_get_ram_discard_manager(section->mr); RamDiscardManager *rdm = memory_region_get_ram_discard_manager(section->mr);
VFIORamDiscardListener *vrdl = NULL; VFIORamDiscardListener *vrdl =
vfio_find_ram_discard_listener(bcontainer, section);
QLIST_FOREACH(vrdl, &bcontainer->vrdl_list, next) {
if (vrdl->mr == section->mr &&
vrdl->offset_within_address_space ==
section->offset_within_address_space) {
break;
}
}
if (!vrdl) {
hw_error("vfio: Trying to sync missing RAM discard listener");
}
/* /*
* We only want/can synchronize the bitmap for actually mapped parts - * We only want/can synchronize the bitmap for actually mapped parts -

3
include/hw/vfio/vfio-container-base.h
View file

@ -253,4 +253,7 @@ struct VFIOIOMMUClass {
void (*release)(VFIOContainerBase *bcontainer); void (*release)(VFIOContainerBase *bcontainer);
}; };
VFIORamDiscardListener *vfio_find_ram_discard_listener(
VFIOContainerBase *bcontainer, MemoryRegionSection *section);
#endif /* HW_VFIO_VFIO_CONTAINER_BASE_H */ #endif /* HW_VFIO_VFIO_CONTAINER_BASE_H */