Drivers may use this function to validate userspace requests in advance,
hence export it.
Reviewed-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
---
drivers/gpu/drm/drm_gpuvm.c | 14 +++++++++++++-
include/drm/drm_gpuvm.h | 1 +
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_gpuvm.c b/drivers/gpu/drm/drm_gpuvm.c
index 445767f8fbc4..2669f9bbc377 100644
--- a/drivers/gpu/drm/drm_gpuvm.c
+++ b/drivers/gpu/drm/drm_gpuvm.c
@@ -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
diff --git a/include/drm/drm_gpuvm.h b/include/drm/drm_gpuvm.h
index 687fd5893624..13eac6f70061 100644
--- a/include/drm/drm_gpuvm.h
+++ b/include/drm/drm_gpuvm.h
@@ -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 *
--
2.41.0
