[PATCH] drm/amdkfd: CRIU export dmabuf handles for GTT BOs

[David Yat Sin]

Export dmabuf handles for GTT BOs so that their contents can be accessed
using SDMA during checkpoint/restore.

Signed-off-by: David Yat Sin <david.yat...@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 2c7d76e67ddb..e1e2362841f8 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1759,7 +1759,8 @@ static int criu_checkpoint_bos(struct kfd_process *p,
                                        goto exit;
                                }
                        }
-                       if (bo_bucket->alloc_flags & 
KFD_IOC_ALLOC_MEM_FLAGS_VRAM) {
+                       if (bo_bucket->alloc_flags
+                           & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | 
KFD_IOC_ALLOC_MEM_FLAGS_GTT)) {
                                ret = 
criu_get_prime_handle(&dumper_bo->tbo.base,
                                                bo_bucket->alloc_flags &
                                                
KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE ? DRM_RDWR : 0,
@@ -1812,7 +1813,8 @@ static int criu_checkpoint_bos(struct kfd_process *p,
 
 exit:
        while (ret && bo_index--) {
-               if (bo_buckets[bo_index].alloc_flags & 
KFD_IOC_ALLOC_MEM_FLAGS_VRAM)
+               if (bo_buckets[bo_index].alloc_flags
+                   & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | 
KFD_IOC_ALLOC_MEM_FLAGS_GTT))
                        close_fd(bo_buckets[bo_index].dmabuf_fd);
        }
 
@@ -2211,7 +2213,8 @@ static int criu_restore_bo(struct kfd_process *p,
 
        pr_debug("map memory was successful for the BO\n");
        /* create the dmabuf object and export the bo */
-       if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) {
+       if (bo_bucket->alloc_flags
+           & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | KFD_IOC_ALLOC_MEM_FLAGS_GTT)) {
                ret = criu_get_prime_handle(&kgd_mem->bo->tbo.base, DRM_RDWR,
                                            &bo_bucket->dmabuf_fd);
                if (ret)
@@ -2281,7 +2284,8 @@ static int criu_restore_bos(struct kfd_process *p,
 
 exit:
        while (ret && i--) {
-               if (bo_buckets[i].alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM)
+               if (bo_buckets[i].alloc_flags
+                  & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | 
KFD_IOC_ALLOC_MEM_FLAGS_GTT))
                        close_fd(bo_buckets[i].dmabuf_fd);
        }
        kvfree(bo_buckets);
-- 
2.17.1