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[PATCH 17/18] vfio/migration: Query device dirty page tracking support
From: |
Avihai Horon |
Subject: |
[PATCH 17/18] vfio/migration: Query device dirty page tracking support |
Date: |
Thu, 26 Jan 2023 20:49:47 +0200 |
From: Joao Martins <joao.m.martins@oracle.com>
Now that everything has been set up for device dirty page tracking,
query the device for device dirty page tracking support.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
---
hw/vfio/migration.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index 2a0a663023..5aeda47345 100644
--- a/hw/vfio/migration.c
+++ b/hw/vfio/migration.c
@@ -658,6 +658,19 @@ static int vfio_migration_query_flags(VFIODevice
*vbasedev, uint64_t *mig_flags)
return 0;
}
+static bool vfio_dma_logging_supported(VFIODevice *vbasedev)
+{
+ uint64_t buf[DIV_ROUND_UP(sizeof(struct vfio_device_feature),
+ sizeof(uint64_t))] = {};
+ struct vfio_device_feature *feature = (struct vfio_device_feature *)buf;
+
+ feature->argsz = sizeof(buf);
+ feature->flags =
+ VFIO_DEVICE_FEATURE_PROBE | VFIO_DEVICE_FEATURE_DMA_LOGGING_START;
+
+ return !ioctl(vbasedev->fd, VFIO_DEVICE_FEATURE, feature);
+}
+
static int vfio_migration_init(VFIODevice *vbasedev)
{
int ret;
@@ -693,6 +706,8 @@ static int vfio_migration_init(VFIODevice *vbasedev)
migration->data_fd = -1;
migration->mig_flags = mig_flags;
+ vbasedev->dirty_pages_supported = vfio_dma_logging_supported(vbasedev);
+
oid = vmstate_if_get_id(VMSTATE_IF(DEVICE(obj)));
if (oid) {
path = g_strdup_printf("%s/vfio", oid);
--
2.26.3
- Re: [PATCH 01/18] vfio/migration: Add VFIO migration pre-copy support, (continued)
- [PATCH 03/18] vfio/common: Fix wrong %m usages, Avihai Horon, 2023/01/26
- [PATCH 04/18] vfio/common: Abort migration if dirty log start/stop/sync fails, Avihai Horon, 2023/01/26
- [PATCH 07/18] util: Extend iova_tree_foreach() to take data argument, Avihai Horon, 2023/01/26
- [PATCH 05/18] vfio/common: Add VFIOBitmap and (de)alloc functions, Avihai Horon, 2023/01/26
- [PATCH 08/18] vfio/common: Record DMA mapped IOVA ranges, Avihai Horon, 2023/01/26
- [PATCH 09/18] vfio/common: Add device dirty page tracking start/stop, Avihai Horon, 2023/01/26
- [PATCH 06/18] util: Add iova_tree_nnodes(), Avihai Horon, 2023/01/26
- [PATCH 17/18] vfio/migration: Query device dirty page tracking support,
Avihai Horon <=
- [PATCH 11/18] vfio/common: Add device dirty page bitmap sync, Avihai Horon, 2023/01/26
- [PATCH 13/18] memory/iommu: Add IOMMU_ATTR_MAX_IOVA attribute, Avihai Horon, 2023/01/26
- [PATCH 16/18] vfio/common: Optimize device dirty page tracking with vIOMMU, Avihai Horon, 2023/01/26
- [PATCH 12/18] vfio/common: Extract vIOMMU code from vfio_sync_dirty_bitmap(), Avihai Horon, 2023/01/26
- [PATCH 14/18] intel-iommu: Implement get_attr() method, Avihai Horon, 2023/01/26
- [PATCH 15/18] vfio/common: Support device dirty page tracking with vIOMMU, Avihai Horon, 2023/01/26
- [PATCH 10/18] vfio/common: Extract code from vfio_get_dirty_bitmap() to new function, Avihai Horon, 2023/01/26
- [PATCH 18/18] docs/devel: Document VFIO device dirty page tracking, Avihai Horon, 2023/01/26