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virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORM

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Rename the bit to match latest virtio spec.
Add a compat macro to avoid breaking existing userspace.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2020-06-24 18:24:33 -04:00
parent bcf876870b
commit 321bd21261
10 changed files with 18 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/um/drivers/virtio_uml.c
View File

@ -385,7 +385,7 @@ static irqreturn_t vu_req_interrupt(int irq, void *data)
}
break;
case VHOST_USER_SLAVE_IOTLB_MSG:
/* not supported - VIRTIO_F_IOMMU_PLATFORM */
/* not supported - VIRTIO_F_ACCESS_PLATFORM */
case VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG:
/* not supported - VHOST_USER_PROTOCOL_F_HOST_NOTIFIER */
default:

2
drivers/vdpa/ifcvf/ifcvf_base.h
View File

@ -29,7 +29,7 @@
(1ULL << VIRTIO_F_VERSION_1) | \
(1ULL << VIRTIO_NET_F_STATUS) | \
(1ULL << VIRTIO_F_ORDER_PLATFORM) | \
(1ULL << VIRTIO_F_IOMMU_PLATFORM) | \
(1ULL << VIRTIO_F_ACCESS_PLATFORM) | \
(1ULL << VIRTIO_NET_F_MRG_RXBUF))
/* Only one queue pair for now. */

4
drivers/vdpa/vdpa_sim/vdpa_sim.c
View File

@ -55,7 +55,7 @@ struct vdpasim_virtqueue {
static u64 vdpasim_features = (1ULL << VIRTIO_F_ANY_LAYOUT) |
(1ULL << VIRTIO_F_VERSION_1) |
(1ULL << VIRTIO_F_IOMMU_PLATFORM);
(1ULL << VIRTIO_F_ACCESS_PLATFORM);
/* State of each vdpasim device */
struct vdpasim {
@ -450,7 +450,7 @@ static int vdpasim_set_features(struct vdpa_device *vdpa, u64 features)
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
/* DMA mapping must be done by driver */
if (!(features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)))
if (!(features & (1ULL << VIRTIO_F_ACCESS_PLATFORM)))
return -EINVAL;
vdpasim->features = features & vdpasim_features;

4
drivers/vhost/net.c
View File

@ -73,7 +73,7 @@ enum {
VHOST_NET_FEATURES = VHOST_FEATURES |
(1ULL << VHOST_NET_F_VIRTIO_NET_HDR) |
(1ULL << VIRTIO_NET_F_MRG_RXBUF) |
(1ULL << VIRTIO_F_IOMMU_PLATFORM)
(1ULL << VIRTIO_F_ACCESS_PLATFORM)
};
enum {
@ -1653,7 +1653,7 @@ static int vhost_net_set_features(struct vhost_net *n, u64 features)
!vhost_log_access_ok(&n->dev))
goto out_unlock;
if ((features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))) {
if ((features & (1ULL << VIRTIO_F_ACCESS_PLATFORM))) {
if (vhost_init_device_iotlb(&n->dev, true))
goto out_unlock;
}

2
drivers/vhost/vdpa.c
View File

@ -31,7 +31,7 @@ enum {
(1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) |
(1ULL << VIRTIO_F_ANY_LAYOUT) |
(1ULL << VIRTIO_F_VERSION_1) |
(1ULL << VIRTIO_F_IOMMU_PLATFORM) |
(1ULL << VIRTIO_F_ACCESS_PLATFORM) |
(1ULL << VIRTIO_F_RING_PACKED) |
(1ULL << VIRTIO_F_ORDER_PLATFORM) |
(1ULL << VIRTIO_RING_F_INDIRECT_DESC) |

2
drivers/virtio/virtio_balloon.c
View File

@ -1129,7 +1129,7 @@ static int virtballoon_validate(struct virtio_device *vdev)
else if (!virtio_has_feature(vdev, VIRTIO_BALLOON_F_PAGE_POISON))
__virtio_clear_bit(vdev, VIRTIO_BALLOON_F_REPORTING);
__virtio_clear_bit(vdev, VIRTIO_F_IOMMU_PLATFORM);
__virtio_clear_bit(vdev, VIRTIO_F_ACCESS_PLATFORM);
return 0;
}

2
drivers/virtio/virtio_ring.c
View File

@ -2225,7 +2225,7 @@ void vring_transport_features(struct virtio_device *vdev)
break;
case VIRTIO_F_VERSION_1:
break;
case VIRTIO_F_IOMMU_PLATFORM:
case VIRTIO_F_ACCESS_PLATFORM:
break;
case VIRTIO_F_RING_PACKED:
break;

2
include/linux/virtio_config.h
View File

@ -171,7 +171,7 @@ static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev)
* Note the reverse polarity of the quirk feature (compared to most
* other features), this is for compatibility with legacy systems.
*/
return !virtio_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);
return !virtio_has_feature(vdev, VIRTIO_F_ACCESS_PLATFORM);
}
static inline

10
include/uapi/linux/virtio_config.h
View File

@ -67,13 +67,17 @@
#define VIRTIO_F_VERSION_1 32
/*
* If clear - device has the IOMMU bypass quirk feature.
* If set - use platform tools to detect the IOMMU.
* If clear - device has the platform DMA (e.g. IOMMU) bypass quirk feature.
* If set - use platform DMA tools to access the memory.
*
* Note the reverse polarity (compared to most other features),
* this is for compatibility with legacy systems.
*/
#define VIRTIO_F_IOMMU_PLATFORM 33
#define VIRTIO_F_ACCESS_PLATFORM 33
#ifndef __KERNEL__
/* Legacy name for VIRTIO_F_ACCESS_PLATFORM (for compatibility with old userspace) */
#define VIRTIO_F_IOMMU_PLATFORM VIRTIO_F_ACCESS_PLATFORM
#endif /* __KERNEL__ */
/* This feature indicates support for the packed virtqueue layout. */
#define VIRTIO_F_RING_PACKED 34

2
tools/virtio/linux/virtio_config.h
View File

@ -51,7 +51,7 @@ static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev)
* Note the reverse polarity of the quirk feature (compared to most
* other features), this is for compatibility with legacy systems.
*/
return !virtio_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);
return !virtio_has_feature(vdev, VIRTIO_F_ACCESS_PLATFORM);
}
static inline bool virtio_is_little_endian(struct virtio_device *vdev)