On Tue, 2024-10-15 at 20:25 -0700, Matthew Brost wrote:
> Used to show we can bounce memory multiple times.
>
> Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
> ---
> drivers/gpu/drm/xe/xe_module.c | 7 +++++++
> drivers/gpu/drm/xe/xe_module.h | 1 +
> drivers/gpu/drm/xe/xe_svm.c | 3 +++
> 3 files changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/xe/xe_module.c
> b/drivers/gpu/drm/xe/xe_module.c
> index 77ce9f9ca7a5..088f6caea307 100644
> --- a/drivers/gpu/drm/xe/xe_module.c
> +++ b/drivers/gpu/drm/xe/xe_module.c
> @@ -25,9 +25,16 @@ struct xe_modparam xe_modparam = {
> .max_vfs = IS_ENABLED(CONFIG_DRM_XE_DEBUG) ? ~0 : 0,
> #endif
> .wedged_mode = 1,
> + .svm_notifier_size = 512,
> /* the rest are 0 by default */
> };
>
> +module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size,
> uint, 0600);
> +MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size(in
> MiB), must be pow2");
Ah, this should probably have been in the previous patch?
pow2 could be spelled out "a power of 2"?
> +
> +module_param_named(always_migrate_to_vram,
> xe_modparam.always_migrate_to_vram, bool, 0444);
> +MODULE_PARM_DESC(always_migrate_to_vram, "Always migrate to VRAM on
> GPU fault");
> +
> module_param_named_unsafe(force_execlist,
> xe_modparam.force_execlist, bool, 0444);
> MODULE_PARM_DESC(force_execlist, "Force Execlist submission");
>
> diff --git a/drivers/gpu/drm/xe/xe_module.h
> b/drivers/gpu/drm/xe/xe_module.h
> index 5a3bfea8b7b4..84339e509c80 100644
> --- a/drivers/gpu/drm/xe/xe_module.h
> +++ b/drivers/gpu/drm/xe/xe_module.h
> @@ -12,6 +12,7 @@
> struct xe_modparam {
> bool force_execlist;
> bool probe_display;
> + bool always_migrate_to_vram;
Kerneldoc
Thanks,
Thomas
> u32 force_vram_bar_size;
> int guc_log_level;
> char *guc_firmware_path;
> diff --git a/drivers/gpu/drm/xe/xe_svm.c
> b/drivers/gpu/drm/xe/xe_svm.c
> index 16e34aaead79..bb386f56a189 100644
> --- a/drivers/gpu/drm/xe/xe_svm.c
> +++ b/drivers/gpu/drm/xe/xe_svm.c
> @@ -767,6 +767,9 @@ int xe_svm_handle_pagefault(struct xe_vm *vm,
> struct xe_vma *vma,
> }
> drm_exec_fini(&exec);
>
> + if (xe_modparam.always_migrate_to_vram)
> + range->migrated = false;
> +
> dma_fence_wait(fence, false);
> dma_fence_put(fence);
>
