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drm/xe: Add always_migrate_to_vram modparam

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Used to show we can bounce memory multiple times which will happen once
a real migration policy is implemented. Can be removed once migration
policy is implemented.

v3:
 - Pull some changes into the previous patch (Thomas)
 - Better commit message (Thomas)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-32-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2025-03-05 17:26:56 -08:00
parent 8e5a5dc056
commit c56904f6cc
3 changed files with 7 additions and 0 deletions
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3
drivers/gpu/drm/xe/xe_module.c
View File

@ -29,6 +29,9 @@ struct xe_modparam xe_modparam = {
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 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");

1
drivers/gpu/drm/xe/xe_module.h
View File

@ -12,6 +12,7 @@
struct xe_modparam {
bool force_execlist;
bool probe_display;
bool always_migrate_to_vram;
u32 force_vram_bar_size;
int guc_log_level;
char *guc_firmware_path;

3
drivers/gpu/drm/xe/xe_svm.c
View File

@ -822,6 +822,9 @@ 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->skip_migrate = false;
dma_fence_wait(fence, false);
dma_fence_put(fence);