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>,
"Dmitry Baryshkov" <lumag@kernel.org>,
"Rob Clark" <robin.clark@oss.qualcomm.com>,
"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: [PATCH v3 5/6] drm/msm: Convert map helper to use dma-address
Date: Tue, 27 Oct 2026 16:04:48 -0700 [thread overview]
Message-ID: <20261027230452.130031-6-robin.clark@oss.qualcomm.com> (raw)
In-Reply-To: <20261027230452.130031-1-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.
Tested-by: Jianfeng Liu <liujianfeng1994@gmail.com> # x1e78100 (Acer SFA14-11), v7.3-rc5 + this series, CONFIG_DMABUF_DEBUG=y
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 479e5450a4dc..c2950d32c507 100644
--- a/drivers/gpu/drm/msm/msm_iommu.c
+++ b/drivers/gpu/drm/msm/msm_iommu.c
@@ -153,9 +153,9 @@ __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;
--
2.56.0
next prev parent reply other threads:[~2026-10-27 23:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-27 23:04 [PATCH v3 0/6] drm/msm: DMABUF_DEBUG fixes Rob Clark
2026-10-27 23:04 ` [PATCH v3 1/6] drm/msm: Cleanup if pages_to_sg() fails Rob Clark
2026-10-27 23:04 ` [PATCH v3 2/6] drm/msm/gem: dma_map/unmap_sgtable() Rob Clark
2026-10-27 23:04 ` [PATCH v3 3/6] drm/msm: Extract out map/unmap helpers Rob Clark
2026-10-27 23:04 ` [PATCH v3 4/6] drm/msm: Convert iommu map/unmap to helpers Rob Clark
2026-10-27 23:04 ` Rob Clark [this message]
2026-10-28 1:14 ` [PATCH v3 5/6] drm/msm: Convert map helper to use dma-address Dmitry Baryshkov
2026-10-28 1:34 ` Rob Clark
2026-10-27 23:04 ` [PATCH v3 6/6] drm/msm: Treat !mapped as an error Rob Clark
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