diff options
| -rw-r--r-- | hw/vfio/common.c | 4 | ||||
| -rw-r--r-- | include/hw/vfio/vfio-common.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 5af7755..79628d6 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1931,6 +1931,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as, container->fd = fd; container->error = NULL; container->dirty_pages_supported = false; + container->dma_max_mappings = 0; QLIST_INIT(&container->giommu_list); QLIST_INIT(&container->hostwin_list); QLIST_INIT(&container->vrdl_list); @@ -1962,7 +1963,10 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as, vfio_host_win_add(container, 0, (hwaddr)-1, info->iova_pgsizes); container->pgsizes = info->iova_pgsizes; + /* The default in the kernel ("dma_entry_limit") is 65535. */ + container->dma_max_mappings = 65535; if (!ret) { + vfio_get_info_dma_avail(info, &container->dma_max_mappings); vfio_get_iommu_info_migration(container, info); } g_free(info); diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 6814322..8af11b0 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -88,6 +88,7 @@ typedef struct VFIOContainer { uint64_t dirty_pgsizes; uint64_t max_dirty_bitmap_size; unsigned long pgsizes; + unsigned int dma_max_mappings; QLIST_HEAD(, VFIOGuestIOMMU) giommu_list; QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list; QLIST_HEAD(, VFIOGroup) group_list; |