diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_migrate.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c index b32d8fdfe8e9..d8cec5ebe1d4 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c @@ -57,6 +57,9 @@ static const struct dev_pagemap_ops svm_migrate_pgmap_ops = { .migrate_to_ram = svm_migrate_to_ram, }; +/* Each VRAM page uses sizeof(struct page) on system memory */ +#define SVM_HMM_PAGE_STRUCT_SIZE(size) ((size)/PAGE_SIZE * sizeof(struct page)) + int svm_migrate_init(struct amdgpu_device *adev) { struct kfd_dev *kfddev = adev->kfd.dev; @@ -93,6 +96,11 @@ int svm_migrate_init(struct amdgpu_device *adev) return PTR_ERR(r); } + pr_debug("reserve %ldMB system memory for VRAM pages struct\n", + SVM_HMM_PAGE_STRUCT_SIZE(size) >> 20); + + amdgpu_amdkfd_reserve_system_mem(SVM_HMM_PAGE_STRUCT_SIZE(size)); + pr_info("HMM registered %ldMB device memory\n", size >> 20); return 0; |