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From: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
To: intel-xe@lists.freedesktop.org
Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
	dri-devel@lists.freedesktop.org, himal.prasad.ghimiray@intel.com,
	apopple@nvidia.com, airlied@gmail.com,
	"Simona Vetter" <simona.vetter@ffwll.ch>,
	felix.kuehling@amd.com, "Matthew Brost" <matthew.brost@intel.com>,
	"Christian König" <christian.koenig@amd.com>,
	dakr@kernel.org, "Mrozek, Michal" <michal.mrozek@intel.com>,
	"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>
Subject: [PATCH v5 02/24] drm/pagemap: Remove some dead code
Date: Thu, 18 Dec 2025 17:20:39 +0100	[thread overview]
Message-ID: <20251218162101.605379-3-thomas.hellstrom@linux.intel.com> (raw)
In-Reply-To: <20251218162101.605379-1-thomas.hellstrom@linux.intel.com>

The page pointer can't be NULL.

v5:
- New patch. (Matt Brost)

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
---
 drivers/gpu/drm/drm_pagemap.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/drivers/gpu/drm/drm_pagemap.c b/drivers/gpu/drm/drm_pagemap.c
index 37d7cfbbb3e8..4cf8f54e5a27 100644
--- a/drivers/gpu/drm/drm_pagemap.c
+++ b/drivers/gpu/drm/drm_pagemap.c
@@ -702,19 +702,6 @@ static int __drm_pagemap_migrate_to_ram(struct vm_area_struct *vas,
 	if (!migrate.cpages)
 		goto err_free;
 
-	if (!page) {
-		for (i = 0; i < npages; ++i) {
-			if (!(migrate.src[i] & MIGRATE_PFN_MIGRATE))
-				continue;
-
-			page = migrate_pfn_to_page(migrate.src[i]);
-			break;
-		}
-
-		if (!page)
-			goto err_finalize;
-	}
-	zdd = page->zone_device_data;
 	ops = zdd->devmem_allocation->ops;
 	dev = zdd->devmem_allocation->dev;
 
-- 
2.51.1


  parent reply	other threads:[~2025-12-18 16:21 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-18 16:20 [PATCH v5 00/24] Dynamic drm_pagemaps and Initial multi-device SVM Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 01/24] drm/xe/svm: Fix a debug printout Thomas Hellström
2025-12-18 16:20 ` Thomas Hellström [this message]
2025-12-18 18:16   ` [PATCH v5 02/24] drm/pagemap: Remove some dead code Matthew Brost
2025-12-18 16:20 ` [PATCH v5 03/24] drm/pagemap, drm/xe: Ensure that the devmem allocation is idle before use Thomas Hellström
2025-12-18 18:33   ` Matthew Brost
2025-12-18 19:18     ` Thomas Hellström
2025-12-18 19:33       ` Matthew Brost
2025-12-18 16:20 ` [PATCH v5 04/24] drm/pagemap, drm/xe: Add refcounting to struct drm_pagemap Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 05/24] drm/pagemap: Add a refcounted drm_pagemap backpointer to struct drm_pagemap_zdd Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 06/24] drm/pagemap, drm/xe: Manage drm_pagemap provider lifetimes Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 07/24] drm/pagemap: Add a drm_pagemap cache and shrinker Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 08/24] drm/xe: Use the " Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 09/24] drm/pagemap: Remove the drm_pagemap_create() interface Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 10/24] drm/pagemap_util: Add a utility to assign an owner to a set of interconnected gpus Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 11/24] drm/xe: Use the drm_pagemap_util helper to get a svm pagemap owner Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 12/24] drm/xe: Pass a drm_pagemap pointer around with the memory advise attributes Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 13/24] drm/xe: Use the vma attibute drm_pagemap to select where to migrate Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 14/24] drm/xe: Simplify madvise_preferred_mem_loc() Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 15/24] drm/xe/uapi: Extend the madvise functionality to support foreign pagemap placement for svm Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 16/24] drm/xe: Support pcie p2p dma as a fast interconnect Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 17/24] drm/xe/vm: Add a couple of VM debug printouts Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 18/24] drm/xe/svm: Document how xe keeps drm_pagemap references Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 19/24] drm/pagemap, drm/xe: Clean up the use of the device-private page owner Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 20/24] drm/gpusvm: Introduce a function to scan the current migration state Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 21/24] drm/xe: Use drm_gpusvm_scan_mm() Thomas Hellström
2025-12-18 16:20 ` [PATCH v5 22/24] drm/pagemap, drm/xe: Support destination migration over interconnect Thomas Hellström
2025-12-18 18:40   ` Matthew Brost
2025-12-18 16:21 ` [PATCH v5 23/24] drm/pagemap: Support source " Thomas Hellström
2025-12-18 20:36   ` Matthew Brost
2025-12-18 23:01     ` Matthew Brost
2025-12-18 16:21 ` [PATCH v5 24/24] drm/xe/svm: Serialize migration to device if racing Thomas Hellström
2025-12-18 19:03   ` Matthew Brost
2025-12-18 16:58 ` ✗ CI.checkpatch: warning for Dynamic drm_pagemaps and Initial multi-device SVM (rev6) Patchwork
2025-12-18 16:59 ` ✓ CI.KUnit: success " Patchwork
2025-12-18 17:38 ` ✓ Xe.CI.BAT: " Patchwork
2025-12-19 14:56 ` ✓ Xe.CI.Full: " Patchwork

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