Am 2021-04-21 um 3:51 p.m. schrieb Alex Sierra:
> Attribute access value for default ranges is set, based on
> process xnack on/off.
> XNACK ON has GPU access attribute for unregistered ranges through page
> fault. While XNACK OFF has no access attribute for unregistered ranges.
>
> Signed-off-by: Alex Sierra <alex.sierra@xxxxxxx>
This patch is
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
> index cb025a6f30d5..62cf342d254c 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
> @@ -2963,12 +2963,11 @@ svm_range_get_attr(struct kfd_process *p, uint64_t start, uint64_t size,
> pr_debug("range attrs not found return default values\n");
> svm_range_set_default_attributes(&location, &prefetch_loc,
> &granularity, &flags);
> - /* TODO: Automatically create SVM ranges and map them on
> - * GPU page faults
> if (p->xnack_enabled)
> bitmap_fill(bitmap_access, MAX_GPU_INSTANCE);
> - */
> -
> + else
> + bitmap_zero(bitmap_access, MAX_GPU_INSTANCE);
> + bitmap_zero(bitmap_aip, MAX_GPU_INSTANCE);
> goto fill_values;
> }
> bitmap_fill(bitmap_access, MAX_GPU_INSTANCE);
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