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| author | Juergen Gross <jgross@suse.com> | 2022-06-06 08:09:16 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2022-06-06 08:22:01 +0200 |
| commit | 3f9dfbebdc48cebfbda738f6f3d1dbf6d7232f90 (patch) | |
| tree | f5f088e56ce3e646a0eb3d9844b3757ca7101bd9 /include | |
| parent | 2130a790ca49763f724ec45cf93b9dd765e2023e (diff) | |
| download | linux-3f9dfbebdc48cebfbda738f6f3d1dbf6d7232f90.tar.bz2 | |
virtio: replace arch_has_restricted_virtio_memory_access()
Instead of using arch_has_restricted_virtio_memory_access() together
with CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS, replace those
with platform_has() and a new platform feature
PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 only
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/platform-feature.h | 6 | ||||
| -rw-r--r-- | include/linux/virtio_config.h | 9 |
2 files changed, 5 insertions, 10 deletions
diff --git a/include/linux/platform-feature.h b/include/linux/platform-feature.h index 6ed859928b97..b2f48be999fa 100644 --- a/include/linux/platform-feature.h +++ b/include/linux/platform-feature.h @@ -6,7 +6,11 @@ #include <asm/platform-feature.h> /* The platform features are starting with the architecture specific ones. */ -#define PLATFORM_FEAT_N (0 + PLATFORM_ARCH_FEAT_N) + +/* Used to enable platform specific DMA handling for virtio devices. */ +#define PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS (0 + PLATFORM_ARCH_FEAT_N) + +#define PLATFORM_FEAT_N (1 + PLATFORM_ARCH_FEAT_N) void platform_set(unsigned int feature); void platform_clear(unsigned int feature); diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 9a36051ceb76..49c7c32815f1 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -604,13 +604,4 @@ static inline void virtio_cwrite64(struct virtio_device *vdev, _r; \ }) -#ifdef CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS -int arch_has_restricted_virtio_memory_access(void); -#else -static inline int arch_has_restricted_virtio_memory_access(void) -{ - return 0; -} -#endif /* CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS */ - #endif /* _LINUX_VIRTIO_CONFIG_H */ |