[PATCH v2 5/5] drm/xe/pt: Add an additional check for dmabuf BOs while updating PTEs
kernel test robot
lkp at intel.com
Tue Oct 22 12:58:54 UTC 2024
Hi Vivek,
kernel test robot noticed the following build errors:
[auto build test ERROR on drm-xe/drm-xe-next]
[also build test ERROR on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-misc/drm-misc-next drm-tip/drm-tip linus/master v6.12-rc4 next-20241022]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Vivek-Kasireddy/PCI-P2PDMA-Don-t-enforce-ACS-check-for-functions-of-same-device/20241021-134804
base: https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next
patch link: https://lore.kernel.org/r/20241021052236.1820329-6-vivek.kasireddy%40intel.com
patch subject: [PATCH v2 5/5] drm/xe/pt: Add an additional check for dmabuf BOs while updating PTEs
config: i386-buildonly-randconfig-003-20241022 (https://download.01.org/0day-ci/archive/20241022/202410222048.8IhSS8iE-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241022/202410222048.8IhSS8iE-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410222048.8IhSS8iE-lkp@intel.com/
All errors (new ones prefixed by >>):
drivers/gpu/drm/xe/xe_pt.c: In function 'xe_pt_stage_bind':
>> drivers/gpu/drm/xe/xe_pt.c:682:25: error: implicit declaration of function 'xe_res_first_dma'; did you mean 'xe_res_first_sg'? [-Werror=implicit-function-declaration]
682 | xe_res_first_dma(bo->dma_addr, xe_vma_bo_offset(vma),
| ^~~~~~~~~~~~~~~~
| xe_res_first_sg
cc1: some warnings being treated as errors
vim +682 drivers/gpu/drm/xe/xe_pt.c
583
584 /**
585 * xe_pt_stage_bind() - Build a disconnected page-table tree for a given address
586 * range.
587 * @tile: The tile we're building for.
588 * @vma: The vma indicating the address range.
589 * @entries: Storage for the update entries used for connecting the tree to
590 * the main tree at commit time.
591 * @num_entries: On output contains the number of @entries used.
592 *
593 * This function builds a disconnected page-table tree for a given address
594 * range. The tree is connected to the main vm tree for the gpu using
595 * xe_migrate_update_pgtables() and for the cpu using xe_pt_commit_bind().
596 * The function builds xe_vm_pgtable_update structures for already existing
597 * shared page-tables, and non-existing shared and non-shared page-tables
598 * are built and populated directly.
599 *
600 * Return 0 on success, negative error code on error.
601 */
602 static int
603 xe_pt_stage_bind(struct xe_tile *tile, struct xe_vma *vma,
604 struct xe_vm_pgtable_update *entries, u32 *num_entries)
605 {
606 struct xe_device *xe = tile_to_xe(tile);
607 struct xe_bo *bo = xe_vma_bo(vma);
608 bool is_devmem = !xe_vma_is_userptr(vma) && bo &&
609 (xe_bo_is_vram(bo) || xe_bo_is_stolen_devmem(bo));
610 struct xe_res_cursor curs;
611 struct xe_pt_stage_bind_walk xe_walk = {
612 .base = {
613 .ops = &xe_pt_stage_bind_ops,
614 .shifts = xe_normal_pt_shifts,
615 .max_level = XE_PT_HIGHEST_LEVEL,
616 },
617 .vm = xe_vma_vm(vma),
618 .tile = tile,
619 .curs = &curs,
620 .va_curs_start = xe_vma_start(vma),
621 .vma = vma,
622 .wupd.entries = entries,
623 .needs_64K = (xe_vma_vm(vma)->flags & XE_VM_FLAG_64K) && is_devmem,
624 };
625 struct xe_pt *pt = xe_vma_vm(vma)->pt_root[tile->id];
626 int ret;
627
628 /**
629 * Default atomic expectations for different allocation scenarios are as follows:
630 *
631 * 1. Traditional API: When the VM is not in LR mode:
632 * - Device atomics are expected to function with all allocations.
633 *
634 * 2. Compute/SVM API: When the VM is in LR mode:
635 * - Device atomics are the default behavior when the bo is placed in a single region.
636 * - In all other cases device atomics will be disabled with AE=0 until an application
637 * request differently using a ioctl like madvise.
638 */
639 if (vma->gpuva.flags & XE_VMA_ATOMIC_PTE_BIT) {
640 if (xe_vm_in_lr_mode(xe_vma_vm(vma))) {
641 if (bo && xe_bo_has_single_placement(bo))
642 xe_walk.default_pte |= XE_USM_PPGTT_PTE_AE;
643 /**
644 * If a SMEM+LMEM allocation is backed by SMEM, a device
645 * atomics will cause a gpu page fault and which then
646 * gets migrated to LMEM, bind such allocations with
647 * device atomics enabled.
648 */
649 else if (is_devmem && !xe_bo_has_single_placement(bo))
650 xe_walk.default_pte |= XE_USM_PPGTT_PTE_AE;
651 } else {
652 xe_walk.default_pte |= XE_USM_PPGTT_PTE_AE;
653 }
654
655 /**
656 * Unset AE if the platform(PVC) doesn't support it on an
657 * allocation
658 */
659 if (!xe->info.has_device_atomics_on_smem && !is_devmem)
660 xe_walk.default_pte &= ~XE_USM_PPGTT_PTE_AE;
661 }
662
663 if (is_devmem || bo->is_devmem_external)
664 xe_walk.default_pte |= XE_PPGTT_PTE_DM;
665
666 if (is_devmem)
667 xe_walk.dma_offset = vram_region_gpu_offset(bo->ttm.resource);
668
669 if (!xe_vma_has_no_bo(vma) && xe_bo_is_stolen(bo))
670 xe_walk.dma_offset = xe_ttm_stolen_gpu_offset(xe_bo_device(bo));
671
672 xe_bo_assert_held(bo);
673
674 if (!xe_vma_is_null(vma)) {
675 if (xe_vma_is_userptr(vma))
676 xe_res_first_sg(to_userptr_vma(vma)->userptr.sg, 0,
677 xe_vma_size(vma), &curs);
678 else if (xe_bo_is_vram(bo) || xe_bo_is_stolen(bo))
679 xe_res_first(bo->ttm.resource, xe_vma_bo_offset(vma),
680 xe_vma_size(vma), &curs);
681 else if (bo->is_devmem_external)
> 682 xe_res_first_dma(bo->dma_addr, xe_vma_bo_offset(vma),
683 xe_vma_size(vma), &curs);
684 else
685 xe_res_first_sg(xe_bo_sg(bo), xe_vma_bo_offset(vma),
686 xe_vma_size(vma), &curs);
687 } else {
688 curs.size = xe_vma_size(vma);
689 }
690
691 ret = xe_pt_walk_range(&pt->base, pt->level, xe_vma_start(vma),
692 xe_vma_end(vma), &xe_walk.base);
693
694 *num_entries = xe_walk.wupd.num_used_entries;
695 return ret;
696 }
697
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