Commit 9460f4bd authored by Matthew Brost's avatar Matthew Brost Committed by Lucas De Marchi
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drm/xe: Do not run GPU page fault handler on a closed VM 



Closing a VM removes page table memory thus we shouldn't touch page
tables when a VM is closed. Do not run the GPU page fault handler once
the VM is closed to avoid touching page tables.

Signed-off-by: default avatarMatthew Brost <matthew.brost@intel.com>
Reviewed-by: default avatarHimal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240911011820.825127-1-matthew.brost@intel.com


(cherry picked from commit f96dbf7c)
Signed-off-by: default avatarLucas De Marchi <lucas.demarchi@intel.com>
parent ddc73c46

drivers/gpu/drm/xe/xe_gt_pagefault.c

+6 −0
Original line number Diff line number Diff line
@@ -212,6 +212,12 @@ static int handle_pagefault(struct xe_gt *gt, struct pagefault *pf) 
	 * TODO: Change to read lock? Using write lock for simplicity.

	 */

	down_write(&vm->lock);



	if (xe_vm_is_closed(vm)) {

		err = -ENOENT;

		goto unlock_vm;

	}



	vma = lookup_vma(vm, pf->page_addr);

	if (!vma) {

		err = -EINVAL;