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From: John Levon <john.levon@nutanix.com>
To: qemu-devel@nongnu.org
Cc: Jason Herne <jjherne@linux.ibm.com>,
Thanos Makatos <thanos.makatos@nutanix.com>,
Halil Pasic <pasic@linux.ibm.com>,
=?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>,
Eric Farman <farman@linux.ibm.com>,
Tony Krowiak <akrowiak@linux.ibm.com>, Thomas Huth <thuth@redhat.com>,
qemu-s390x@nongnu.org, Matthew Rosato <mjrosato@linux.ibm.com>,
John Levon <john.levon@nutanix.com>, Paolo Bonzini <pbonzini@redhat.com>,
=?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>,
Stefano Garzarella <sgarzare@redhat.com>,
Alex Williamson <alex.williamson@redhat.com>,
David Hildenbrand <david@redhat.com>,
=?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>,
Peter Xu <peterx@redhat.com>,
=?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>,
"Michael S. Tsirkin" <mst@redhat.com>, John Levon <levon@movementarian.org>
Subject: [PATCH v8 02/28] vfio/container: pass listener_begin/commit callbacks
Date: Wed, 19 Feb 2025 15:48:32 +0100
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From: John Levon <levon@movementarian.org>
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.
Signed-off-by: John Levon <john.levon@nutanix.com>
---
hw/vfio/common.c | 28 +++++++++++++++++++++++++++
include/hw/vfio/vfio-container-base.h | 2 ++
2 files changed, 30 insertions(+)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 8d3d425c63..6f106167fd 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -557,6 +557,32 @@ static bool vfio_get_section_iova_range(VFIOContainerB=
ase *bcontainer,
return true;
}
=20
+static void vfio_listener_begin(MemoryListener *listener)
+{
+ VFIOContainerBase *bcontainer =3D container_of(listener, VFIOContainer=
Base,
+ listener);
+ void (*listener_begin)(VFIOContainerBase *bcontainer);
+
+ listener_begin =3D VFIO_IOMMU_GET_CLASS(bcontainer)->listener_begin;
+
+ if (listener_begin) {
+ listener_begin(bcontainer);
+ }
+}
+
+static void vfio_listener_commit(MemoryListener *listener)
+{
+ VFIOContainerBase *bcontainer =3D container_of(listener, VFIOContainer=
Base,
+ listener);
+ void (*listener_commit)(VFIOContainerBase *bcontainer);
+
+ listener_commit =3D VFIO_IOMMU_GET_CLASS(bcontainer)->listener_begin;
+
+ if (listener_commit) {
+ listener_commit(bcontainer);
+ }
+}
+
static void vfio_device_error_append(VFIODevice *vbasedev, Error **errp)
{
/*
@@ -1396,6 +1422,8 @@ static void vfio_listener_log_sync(MemoryListener *li=
stener,
=20
const MemoryListener vfio_memory_listener =3D {
.name =3D "vfio",
+ .begin =3D vfio_listener_begin,
+ .commit =3D vfio_listener_commit,
.region_add =3D vfio_listener_region_add,
.region_del =3D vfio_listener_region_del,
.log_global_start =3D vfio_listener_log_global_start,
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-c=
ontainer-base.h
index c9d339383e..0a863df0dc 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -111,6 +111,8 @@ struct VFIOIOMMUClass {
=20
/* 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, MemoryRegion *mrp);
--=20
2.34.1