[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH qemu v5 1/2] memory/iommu/vfio: Define add_vfio_grou
From: |
Alexey Kardashevskiy |
Subject: |
[Qemu-devel] [PATCH qemu v5 1/2] memory/iommu/vfio: Define add_vfio_group() callback |
Date: |
Thu, 5 Oct 2017 16:50:36 +1100 |
The new callback will be called when a new VFIO IOMMU group is added.
This should cause no behavioral change, the next patch will.
Signed-off-by: Alexey Kardashevskiy <address@hidden>
---
This could be at the higher level - in MemoryRegionOps, makes sense?
---
include/exec/memory.h | 4 ++++
hw/vfio/common.c | 15 +++++++++++++++
2 files changed, 19 insertions(+)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 5ed4042f87..64e0b4fc96 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -210,6 +210,10 @@ typedef struct IOMMUMemoryRegionClass {
IOMMUNotifierFlag new_flags);
/* Set this up to provide customized IOMMU replay function */
void (*replay)(IOMMUMemoryRegion *iommu, IOMMUNotifier *notifier);
+
+ /* Notifies IOMMUMR about attached VFIO IOMMU group */
+ void (*add_vfio_group)(IOMMUMemoryRegion *iommu_mr, int vfio_kvm_fd,
+ int groupfd);
} IOMMUMemoryRegionClass;
typedef struct CoalescedMemoryRange CoalescedMemoryRange;
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 7b2924c0ef..9e861e0393 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -481,6 +481,21 @@ static void vfio_listener_region_add(MemoryListener
*listener,
VFIOGuestIOMMU *giommu;
IOMMUMemoryRegion *iommu_mr = IOMMU_MEMORY_REGION(section->mr);
+#ifdef CONFIG_KVM
+ if (kvm_enabled()) {
+ VFIOGroup *group;
+ IOMMUMemoryRegionClass *imrc =
+ IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
+
+ QLIST_FOREACH(group, &container->group_list, container_next) {
+ if (imrc->add_vfio_group) {
+ imrc->add_vfio_group(iommu_mr, vfio_kvm_device_fd,
+ group->fd);
+ }
+ }
+ }
+#endif
+
trace_vfio_listener_region_add_iommu(iova, end);
/*
* FIXME: For VFIO iommu types which have KVM acceleration to
--
2.11.0