Pages are currently mapped READ/WRITE. To be able to use different
protections, add a new argument to qemu_vfio_pci_map_bar().
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <
20200922083821.578519-2-philmd@redhat.com>
goto out;
}
- s->regs = qemu_vfio_pci_map_bar(s->vfio, 0, 0, NVME_BAR_SIZE, errp);
+ s->regs = qemu_vfio_pci_map_bar(s->vfio, 0, 0, NVME_BAR_SIZE,
+ PROT_READ | PROT_WRITE, errp);
if (!s->regs) {
ret = -EINVAL;
goto out;
int qemu_vfio_dma_reset_temporary(QEMUVFIOState *s);
void qemu_vfio_dma_unmap(QEMUVFIOState *s, void *host);
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 qemu_vfio_pci_unmap_bar(QEMUVFIOState *s, int index, void *bar,
uint64_t offset, uint64_t size);
* 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");