*/
#define AMDGPU_SVM_RANGE_RETRY_FAULT_PENDING (2UL * NSEC_PER_MSEC)
+/* Giant svm range split into smaller ranges based on this, it is decided using
+ * minimum of all dGPU/APU 1/32 VRAM size, between 2MB to 1GB and alignment to
+ * power of 2MB.
+ */
+static uint64_t max_svm_range_pages;
+
struct criu_svm_metadata {
struct list_head list;
struct kfd_criu_svm_range_priv_data data;
return new;
}
+void svm_range_set_max_pages(struct amdgpu_device *adev)
+{
+ uint64_t max_pages;
+ uint64_t pages, _pages;
+
+ /* 1/32 VRAM size in pages */
+ pages = adev->gmc.real_vram_size >> 17;
+ pages = clamp(pages, 1ULL << 9, 1ULL << 18);
+ pages = rounddown_pow_of_two(pages);
+ do {
+ max_pages = READ_ONCE(max_svm_range_pages);
+ _pages = min_not_zero(max_pages, pages);
+ } while (cmpxchg(&max_svm_range_pages, max_pages, _pages) != max_pages);
+}
+
/**
* svm_range_add - add svm range and handle overlap
* @p: the range add to this process svms