[PATCH v6 3/6] vfio: use vfio_pci_core_setup_barmap to map bar in mmap

ankita
2025-11-25T17:30:45Z

From: Ankit Agrawal <ankita@nvidia.com>

Remove code duplication in vfio_pci_core_mmap by calling
vfio_pci_core_setup_barmap to perform the bar mapping.

cc: Donald Dutile <ddutile@redhat.com>
Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com>
Suggested-by: Alex Williamson <alex@shazbot.org>
Signed-off-by: Ankit Agrawal <ankita@nvidia.com>
---
drivers/vfio/pci/vfio_pci_core.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c
index c445a53ee12e..3cc799eb75ea 100644
--- a/drivers/vfio/pci/vfio_pci_core.c
+++ b/drivers/vfio/pci/vfio_pci_core.c
@@ -1761,18 +1761,9 @@ int vfio_pci_core_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma
* Even though we don't make use of the barmap for the mmap,
* we need to request the region and the barmap tracks that.
*/
- if (!vdev->barmap[index]) {
- ret = pci_request_selected_regions(pdev,
- 1 << index, "vfio-pci");
- if (ret)
- return ret;
-
- vdev->barmap[index] = pci_iomap(pdev, index, 0);
- if (!vdev->barmap[index]) {
- pci_release_selected_regions(pdev, 1 << index);
- return -ENOMEM;
- }
- }
+ ret = vfio_pci_core_setup_barmap(vdev, index);
+ if (ret)
+ return ret;

vma->vm_private_data = vdev;
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
--
2.34.1