[PATCH v2 2/2] drm/amdkfd: new range accessible by all GPUs

[Philip Yang]

If xnack is on, new range is created to recover retry vm fault or
created by SVM API calls, set all GPUs have access to the range.

Signed-off-by: Philip Yang <philip.y...@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index d9111fea724b..6a677bdfcadb 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -258,6 +258,7 @@ svm_range *svm_range_new(struct svm_range_list *svms, 
uint64_t start,
 {
        uint64_t size = last - start + 1;
        struct svm_range *prange;
+       struct kfd_process *p;
 
        prange = kzalloc(sizeof(*prange), GFP_KERNEL);
        if (!prange)
@@ -277,6 +278,11 @@ svm_range *svm_range_new(struct svm_range_list *svms, 
uint64_t start,
        prange->validate_timestamp = 0;
        mutex_init(&prange->migrate_mutex);
        mutex_init(&prange->lock);
+
+       p = container_of(svms, struct kfd_process, svms);
+       if (p->xnack_enabled)
+               bitmap_fill(prange->bitmap_access, MAX_GPU_INSTANCE);
+
        svm_range_set_default_attributes(&prange->preferred_loc,
                                         &prange->prefetch_loc,
                                         &prange->granularity, &prange->flags);
@@ -2243,7 +2249,7 @@ svm_range *svm_range_create_unregistered_range(struct 
amdgpu_device *adev,
 
        prange = svm_range_new(&p->svms, start, last);
        if (!prange) {
-               pr_debug("Failed to create prange in address [0x%llx]\\n", 
addr);
+               pr_debug("Failed to create prange in address [0x%llx]\n", addr);
                return NULL;
        }
        if (kfd_process_gpuid_from_kgd(p, adev, &gpuid, &gpuidx)) {
@@ -2251,9 +2257,7 @@ svm_range *svm_range_create_unregistered_range(struct 
amdgpu_device *adev,
                svm_range_free(prange);
                return NULL;
        }
-       prange->preferred_loc = gpuid;
-       prange->actual_loc = 0;
-       /* Gurantee prange is migrate it */
+
        svm_range_add_to_svms(prange);
        svm_range_add_notifier_locked(mm, prange);
 
-- 
2.17.1

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