Commit 9297cfc9 authored by Danilo Krummrich's avatar Danilo Krummrich
Browse files

drm/gpuvm: export drm_gpuvm_range_valid() 



Drivers may use this function to validate userspace requests in advance,
hence export it.

Acked-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarThomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: default avatarDanilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231108001259.15123-4-dakr@redhat.com
parent d1adea27

drivers/gpu/drm/drm_gpuvm.c

+13 −1
Original line number Diff line number Diff line
@@ -649,7 +649,18 @@ drm_gpuvm_in_kernel_node(struct drm_gpuvm *gpuvm, u64 addr, u64 range) 
	return krange && addr < kend && kstart < end;

}



static bool

/**

 * drm_gpuvm_range_valid() - checks whether the given range is valid for the

 * given &drm_gpuvm

 * @gpuvm: the GPUVM to check the range for

 * @addr: the base address

 * @range: the range starting from the base address

 *

 * Checks whether the range is within the GPUVM's managed boundaries.

 *

 * Returns: true for a valid range, false otherwise

 */

bool

drm_gpuvm_range_valid(struct drm_gpuvm *gpuvm,

		      u64 addr, u64 range)

{
@@ -657,6 +668,7 @@ drm_gpuvm_range_valid(struct drm_gpuvm *gpuvm, 
	       drm_gpuvm_in_mm_range(gpuvm, addr, range) &&

	       !drm_gpuvm_in_kernel_node(gpuvm, addr, range);

}

EXPORT_SYMBOL_GPL(drm_gpuvm_range_valid);



/**

 * drm_gpuvm_init() - initialize a &drm_gpuvm

include/drm/drm_gpuvm.h

+1 −0
Original line number Diff line number Diff line
@@ -253,6 +253,7 @@ void drm_gpuvm_init(struct drm_gpuvm *gpuvm, const char *name, 
		    const struct drm_gpuvm_ops *ops);

void drm_gpuvm_destroy(struct drm_gpuvm *gpuvm);



bool drm_gpuvm_range_valid(struct drm_gpuvm *gpuvm, u64 addr, u64 range);

bool drm_gpuvm_interval_empty(struct drm_gpuvm *gpuvm, u64 addr, u64 range);



static inline struct drm_gpuva *