[RFC 07/29] drm/xe/vm: Add an identifier in xe_vma_ops for svm prefetch

[Matthew Brost]

On Fri, Mar 14, 2025 at 01:32:04PM +0530, Himal Prasad Ghimiray wrote:
> Add a flag in xe_vma_ops to determine whether it has svm prefetch ops or
> not.
> 
> Suggested-by: Matthew Brost <matthew.brost at intel.com>
> Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
> ---
>  drivers/gpu/drm/xe/xe_vm.c       | 1 +
>  drivers/gpu/drm/xe/xe_vm_types.h | 3 +++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
> index 53a80c0af8de..b83154d338c7 100644
> --- a/drivers/gpu/drm/xe/xe_vm.c
> +++ b/drivers/gpu/drm/xe/xe_vm.c
> @@ -3215,6 +3215,7 @@ static void xe_vma_ops_init(struct xe_vma_ops *vops, struct xe_vm *vm,
>  	vops->q = q;
>  	vops->syncs = syncs;
>  	vops->num_syncs = num_syncs;
> +	vops->flags = false;

s/false/0 - I this static checkers will complain about this.

Matt

>  }
>  
>  static int xe_vm_bind_ioctl_validate_bo(struct xe_device *xe, struct xe_bo *bo,
> diff --git a/drivers/gpu/drm/xe/xe_vm_types.h b/drivers/gpu/drm/xe/xe_vm_types.h
> index 93224a87ab03..0b02a37bd2f3 100644
> --- a/drivers/gpu/drm/xe/xe_vm_types.h
> +++ b/drivers/gpu/drm/xe/xe_vm_types.h
> @@ -443,6 +443,9 @@ struct xe_vma_ops {
>  	u32 num_syncs;
>  	/** @pt_update_ops: page table update operations */
>  	struct xe_vm_pgtable_update_ops pt_update_ops[XE_MAX_TILES_PER_DEVICE];
> +	/** @flag: signify the properties within xe_vma_ops*/
> +#define XE_VMA_OPS_HAS_SVM_PREFETCH BIT(0)
> +	u32 flags;
>  #ifdef TEST_VM_OPS_ERROR
>  	/** @inject_error: inject error to test error handling */
>  	bool inject_error;
> -- 
> 2.34.1
>