diff options
| author | Juergen Gross | 2022-08-29 13:26:08 +0200 |
|---|---|---|
| committer | Juergen Gross | 2022-10-10 14:31:26 +0200 |
| commit | 61367688f1fb07678b1d865a0ce9364f5267a896 (patch) | |
| tree | c6c251cc4779b477a2153e5d12b6f73f9aaab102 /drivers/xen | |
| parent | 7228113d1fa0107a377aef71094d610eb8824aa2 (diff) | |
xen/virtio: enable grant based virtio on x86
Use an x86-specific virtio_check_mem_acc_cb() for Xen in order to setup
the correct DMA ops.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # common code
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/grant-dma-ops.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c index 3e4c590896d0..860f37c93af4 100644 --- a/drivers/xen/grant-dma-ops.c +++ b/drivers/xen/grant-dma-ops.c @@ -313,7 +313,7 @@ bool xen_is_grant_dma_device(struct device *dev) bool xen_virtio_mem_acc(struct virtio_device *dev) { - if (IS_ENABLED(CONFIG_XEN_VIRTIO_FORCE_GRANT)) + if (IS_ENABLED(CONFIG_XEN_VIRTIO_FORCE_GRANT) || xen_pv_domain()) return true; return xen_is_grant_dma_device(dev->dev.parent); @@ -387,6 +387,16 @@ err: dev_err(dev, "Cannot set up Xen grant DMA ops, retain platform DMA ops\n"); } +bool xen_virtio_restricted_mem_acc(struct virtio_device *dev) +{ + bool ret = xen_virtio_mem_acc(dev); + + if (ret) + xen_grant_setup_dma_ops(dev->dev.parent); + + return ret; +} + MODULE_DESCRIPTION("Xen grant DMA-mapping layer"); MODULE_AUTHOR("Juergen Gross <jgross@suse.com>"); MODULE_LICENSE("GPL"); |