From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EFB16283C8C; Mon, 5 May 2025 22:23:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746483816; cv=none; b=EjsqHDkF5auB8C6UZ14Cji6QiLB+wt87O9m1UesanjNMkM86HAyoqobCvTyndE/q9kMO6uFDnaebFwj1K++KyLTTB9g19kxOCCQ94c+KgwTuxhvonsM8H2hkySwd5yAc7RDEEEWEnp4n1LnLxQB/cBtkJ3ni08oq/UWf4AmkcKg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746483816; c=relaxed/simple; bh=S+pmjWouOLmqbG2p3mkmELBSeuXJ1zsMykhif3J38RM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=YHKIitXmzXVST1UoT0dJi0t8bAUPFd61OJmicdjrQjaVPyzNP5Ms9PHX1Tip/NkLJ0HSdhDacPmKinJCNP/zto6VXPiI5hbiAFSw/VuMIDF+Fjmrf3kYLJfqf5wS65Dg46yUk/fwZZigbD496FZWRjox5ovBDfr8374eqd8QEvU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FoWlYfvv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FoWlYfvv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9BC76C4CEED; Mon, 5 May 2025 22:23:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746483815; bh=S+pmjWouOLmqbG2p3mkmELBSeuXJ1zsMykhif3J38RM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FoWlYfvvzCpNLi988domSTIeoGXoEBoQAUBnGq5j9qqNFDChUxZ3HQwvEp14c3qKP bGcuppxvVsJAbo+sU2nNSKwisLoAqwcN6h6dsl1T0BY7+DJXWCa0/qN5HEkvfMV+YD v/nG5zEg7oLfHlLccRCpe6P+oClM9h6sPw54rzGXO8cdZ56ZD+Y/1iUteBS8sVdLJU lrXYihqELTteCR6Agyi5F44xOhE+3u9YAV8YE0YQAU5NWIA9HK+dAC2sDWwAR++PSu loo8ghj0HaSrEdkSaZKUf6wqeh1cX3Fp/P8X3v+gUdiAO71sxuZe4vYpkfxQkw1v+S 14LsmXTbUsIiA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Matthew Brost , =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= , Sasha Levin , lucas.demarchi@intel.com, rodrigo.vivi@intel.com, airlied@gmail.com, simona@ffwll.ch, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.14 231/642] drm/xe: Nuke VM's mapping upon close Date: Mon, 5 May 2025 18:07:27 -0400 Message-Id: <20250505221419.2672473-231-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250505221419.2672473-1-sashal@kernel.org> References: <20250505221419.2672473-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.14.5 Content-Transfer-Encoding: 8bit From: Matthew Brost [ Upstream commit 074e40d9c2a84939fe28d7121d3469db50f34a3d ] Clear root PT entry and invalidate entire VM's address space when closing the VM. Will prevent the GPU from accessing any of the VM's memory after closing. v2: - s/vma/vm in kernel doc (CI) - Don't nuke migration VM as this occur at driver unload (CI) v3: - Rebase and pull into SVM series (Thomas) - Wait for pending binds (Thomas) v5: - Remove xe_gt_tlb_invalidation_fence_fini in error case (Matt Auld) - Drop local migration bool (Thomas) v7: - Add drm_dev_enter/exit protecting invalidation (CI, Matt Auld) Signed-off-by: Matthew Brost Reviewed-by: Thomas Hellström Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-12-matthew.brost@intel.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c | 22 ++++++++++++++ drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h | 2 ++ drivers/gpu/drm/xe/xe_pt.c | 14 +++++++++ drivers/gpu/drm/xe/xe_pt.h | 3 ++ drivers/gpu/drm/xe/xe_vm.c | 32 +++++++++++++++++++++ 5 files changed, 73 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c index 9405d83d4db2a..084cbdeba8eaa 100644 --- a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c +++ b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c @@ -418,6 +418,28 @@ int xe_gt_tlb_invalidation_range(struct xe_gt *gt, return send_tlb_invalidation(>->uc.guc, fence, action, len); } +/** + * xe_gt_tlb_invalidation_vm - Issue a TLB invalidation on this GT for a VM + * @gt: graphics tile + * @vm: VM to invalidate + * + * Invalidate entire VM's address space + */ +void xe_gt_tlb_invalidation_vm(struct xe_gt *gt, struct xe_vm *vm) +{ + struct xe_gt_tlb_invalidation_fence fence; + u64 range = 1ull << vm->xe->info.va_bits; + int ret; + + xe_gt_tlb_invalidation_fence_init(gt, &fence, true); + + ret = xe_gt_tlb_invalidation_range(gt, &fence, 0, range, vm->usm.asid); + if (ret < 0) + return; + + xe_gt_tlb_invalidation_fence_wait(&fence); +} + /** * xe_gt_tlb_invalidation_vma - Issue a TLB invalidation on this GT for a VMA * @gt: GT structure diff --git a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h index 672acfcdf0d70..abe9b03d543e6 100644 --- a/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h +++ b/drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h @@ -12,6 +12,7 @@ struct xe_gt; struct xe_guc; +struct xe_vm; struct xe_vma; int xe_gt_tlb_invalidation_init_early(struct xe_gt *gt); @@ -21,6 +22,7 @@ int xe_gt_tlb_invalidation_ggtt(struct xe_gt *gt); int xe_gt_tlb_invalidation_vma(struct xe_gt *gt, struct xe_gt_tlb_invalidation_fence *fence, struct xe_vma *vma); +void xe_gt_tlb_invalidation_vm(struct xe_gt *gt, struct xe_vm *vm); int xe_gt_tlb_invalidation_range(struct xe_gt *gt, struct xe_gt_tlb_invalidation_fence *fence, u64 start, u64 end, u32 asid); diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c index dc24baa840924..148d90611eebf 100644 --- a/drivers/gpu/drm/xe/xe_pt.c +++ b/drivers/gpu/drm/xe/xe_pt.c @@ -218,6 +218,20 @@ void xe_pt_destroy(struct xe_pt *pt, u32 flags, struct llist_head *deferred) xe_pt_free(pt); } +/** + * xe_pt_clear() - Clear a page-table. + * @xe: xe device. + * @pt: The page-table. + * + * Clears page-table by setting to zero. + */ +void xe_pt_clear(struct xe_device *xe, struct xe_pt *pt) +{ + struct iosys_map *map = &pt->bo->vmap; + + xe_map_memset(xe, map, 0, 0, SZ_4K); +} + /** * DOC: Pagetable building * diff --git a/drivers/gpu/drm/xe/xe_pt.h b/drivers/gpu/drm/xe/xe_pt.h index 9ab386431cadd..8e43912ae8e94 100644 --- a/drivers/gpu/drm/xe/xe_pt.h +++ b/drivers/gpu/drm/xe/xe_pt.h @@ -13,6 +13,7 @@ struct dma_fence; struct xe_bo; struct xe_device; struct xe_exec_queue; +struct xe_svm_range; struct xe_sync_entry; struct xe_tile; struct xe_vm; @@ -35,6 +36,8 @@ void xe_pt_populate_empty(struct xe_tile *tile, struct xe_vm *vm, void xe_pt_destroy(struct xe_pt *pt, u32 flags, struct llist_head *deferred); +void xe_pt_clear(struct xe_device *xe, struct xe_pt *pt); + int xe_pt_update_ops_prepare(struct xe_tile *tile, struct xe_vma_ops *vops); struct dma_fence *xe_pt_update_ops_run(struct xe_tile *tile, struct xe_vma_ops *vops); diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index 5956631c0d40a..785b8960050bd 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -8,6 +8,7 @@ #include #include +#include #include #include #include @@ -1582,9 +1583,40 @@ struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags) static void xe_vm_close(struct xe_vm *vm) { + struct xe_device *xe = vm->xe; + bool bound; + int idx; + + bound = drm_dev_enter(&xe->drm, &idx); + down_write(&vm->lock); + vm->size = 0; + + if (!((vm->flags & XE_VM_FLAG_MIGRATION))) { + struct xe_tile *tile; + struct xe_gt *gt; + u8 id; + + /* Wait for pending binds */ + dma_resv_wait_timeout(xe_vm_resv(vm), + DMA_RESV_USAGE_BOOKKEEP, + false, MAX_SCHEDULE_TIMEOUT); + + if (bound) { + for_each_tile(tile, xe, id) + if (vm->pt_root[id]) + xe_pt_clear(xe, vm->pt_root[id]); + + for_each_gt(gt, xe, id) + xe_gt_tlb_invalidation_vm(gt, vm); + } + } + up_write(&vm->lock); + + if (bound) + drm_dev_exit(idx); } void xe_vm_close_and_put(struct xe_vm *vm) -- 2.39.5