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From: Rob Clark <robin.clark@oss.qualcomm.com>
To: dri-devel@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org,
	"Jianfeng Liu" <liujianfeng1994@gmail.com>,
	"Christian König" <christian.koenig@amd.com>,
	"Rob Clark" <robin.clark@oss.qualcomm.com>,
	"Dmitry Baryshkov" <lumag@kernel.org>,
	"Abhinav Kumar" <abhinav.kumar@linux.dev>,
	"Jessica Zhang" <jesszhan0024@gmail.com>,
	"Sean Paul" <sean@poorly.run>,
	"Marijn Suijten" <marijn.suijten@somainline.org>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	linux-kernel@vger.kernel.org (open list)
Subject: [RFT 5/5] drm/msm: Convert map helper to use dma-address
Date: Tue,  6 Oct 2026 06:09:56 -0700	[thread overview]
Message-ID: <20261006131000.81501-6-robin.clark@oss.qualcomm.com> (raw)
In-Reply-To: <20261006131000.81501-1-robin.clark@oss.qualcomm.com>

Now that we have everything unified in one path, switch over to using
dma addresses for setting up the mapping.  This avoids issues with
CONFIG_DMABUF_DEBUG stripping the pages from the sgt.

Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
---
 drivers/gpu/drm/msm/msm_iommu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c
index 50038d00c3a8..27a74514e942 100644
--- a/drivers/gpu/drm/msm/msm_iommu.c
+++ b/drivers/gpu/drm/msm/msm_iommu.c
@@ -148,9 +148,9 @@ __do_map(unsigned long pgsize_bitmap, u64 iova, struct sg_table *sgt, size_t off
 	u64 addr = iova;
 	unsigned int i;
 
-	for_each_sgtable_sg (sgt, sg, i) {
-		size_t size = sg->length;
-		phys_addr_t phys = sg_phys(sg);
+	for_each_sgtable_dma_sg (sgt, sg, i) {
+		size_t size = sg_dma_len(sg);
+		phys_addr_t phys = sg_dma_address(sg);
 
 		if (!len)
 			break;
-- 
2.55.0


  parent reply	other threads:[~2026-10-06 13:10 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-06 13:09 [RFT 0/5] drm/msm: DMABUF_DEBUG fixes Rob Clark
2026-10-06 13:09 ` [RFT 1/5] drm/msm: Cleanup if pages_to_sg() fails Rob Clark
2026-10-06 13:09 ` [RFT 2/5] drm/msm/gem: dma_map/unmap_sgtable() Rob Clark
2026-10-06 13:09 ` [RFT 3/5] drm/msm: Extract out map/unmap helpers Rob Clark
2026-10-06 13:19   ` sashiko-bot
2026-10-07  5:19     ` Karl Mehltretter
2026-10-07 15:13       ` Rob Clark
2026-10-06 13:09 ` [RFT 4/5] drm/msm: Convert iommu map/unmap to helpers Rob Clark
2026-10-06 13:25   ` sashiko-bot
2026-10-07  5:23     ` Karl Mehltretter
2026-10-07 15:14       ` Rob Clark
2026-10-06 13:09 ` Rob Clark [this message]
2026-10-07 13:15 ` [RFT 0/5] drm/msm: DMABUF_DEBUG fixes Jianfeng Liu
2026-10-07 15:54   ` Rob Clark

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