xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORM

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

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