From: Li Zhe <lizhe.67@xxxxxxxxxxxxx>
Introduce a new member has_rsvd for struct vfio_dma. This member is
used to indicate whether there are any reserved or invalid pfns in
the region represented by this vfio_dma. If it is true, it indicates
that there is at least one pfn in this region that is either reserved
or invalid.
Signed-off-by: Li Zhe <lizhe.67@xxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
---
drivers/vfio/vfio_iommu_type1.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index dbacd852efae..30e1b54f6c25 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -93,6 +93,7 @@ struct vfio_dma {
bool iommu_mapped;
bool lock_cap; /* capable(CAP_IPC_LOCK) */
bool vaddr_invalid;
+ bool has_rsvd; /* has 1 or more rsvd pfns */
struct task_struct *task;
struct rb_root pfn_list; /* Ex-user pinned pfn list */
unsigned long *bitmap;
@@ -782,6 +783,7 @@ static long vfio_pin_pages_remote(struct vfio_dma *dma, unsigned long vaddr,
}
out:
+ dma->has_rsvd |= rsvd;
ret = vfio_lock_acct(dma, lock_acct, false);
unpin_out:
--
2.20.1
