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vfio/container: pass listener_begin/commit callbacks

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The vfio-user container will later need to hook into these callbacks;
set up vfio to use them, and optionally pass them through to the
container.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: John Levon <john.levon@nutanix.com>
Link: https://lore.kernel.org/qemu-devel/20250507152020.1254632-15-john.levon@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
John Levon 2025-05-07 16:20:19 +01:00 • committed by Cédric Le Goater
parent d4e392d0a9
commit d9b7d8b699
2 changed files with 30 additions and 0 deletions
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28
hw/vfio/listener.c
View file

@ -411,6 +411,32 @@ static bool vfio_get_section_iova_range(VFIOContainerBase *bcontainer,
return true;
}
static void vfio_listener_begin(MemoryListener *listener)
{
VFIOContainerBase *bcontainer = container_of(listener, VFIOContainerBase,
listener);
void (*listener_begin)(VFIOContainerBase *bcontainer);
listener_begin = VFIO_IOMMU_GET_CLASS(bcontainer)->listener_begin;
if (listener_begin) {
listener_begin(bcontainer);
}
}
static void vfio_listener_commit(MemoryListener *listener)
{
VFIOContainerBase *bcontainer = container_of(listener, VFIOContainerBase,
listener);
void (*listener_commit)(VFIOContainerBase *bcontainer);
listener_commit = VFIO_IOMMU_GET_CLASS(bcontainer)->listener_begin;
if (listener_commit) {
listener_commit(bcontainer);
}
}
static void vfio_device_error_append(VFIODevice *vbasedev, Error **errp)
{
/*
@ -1161,6 +1187,8 @@ static void vfio_listener_log_sync(MemoryListener *listener,
static const MemoryListener vfio_memory_listener = {
.name = "vfio",
.begin = vfio_listener_begin,
.commit = vfio_listener_commit,
.region_add = vfio_listener_region_add,
.region_del = vfio_listener_region_del,
.log_global_start = vfio_listener_log_global_start,

2
include/hw/vfio/vfio-container-base.h
View file

@ -117,6 +117,8 @@ struct VFIOIOMMUClass {
/* basic feature */
bool (*setup)(VFIOContainerBase *bcontainer, Error **errp);
void (*listener_begin)(VFIOContainerBase *bcontainer);
void (*listener_commit)(VFIOContainerBase *bcontainer);
int (*dma_map)(const VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
void *vaddr, bool readonly);