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-rw-r--r--util/vfio-helpers.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index 583bdfb36f..9ac307e3d4 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -146,13 +146,13 @@ static int qemu_vfio_pci_init_bar(QEMUVFIOState *s, int index, Error **errp)
* Map a PCI bar area.
*/
void *qemu_vfio_pci_map_bar(QEMUVFIOState *s, int index,
- uint64_t offset, uint64_t size,
+ uint64_t offset, uint64_t size, int prot,
Error **errp)
{
void *p;
assert_bar_index_valid(s, index);
p = mmap(NULL, MIN(size, s->bar_region_info[index].size - offset),
- PROT_READ | PROT_WRITE, MAP_SHARED,
+ prot, MAP_SHARED,
s->device, s->bar_region_info[index].offset + offset);
if (p == MAP_FAILED) {
error_setg_errno(errp, errno, "Failed to map BAR region");