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[34.150.243.109]) by smtp.gmail.com with ESMTPSA id 00721157ae682-85e65f146edsm79761867b3.32.2026.09.01.10.08.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2026 10:08:59 -0700 (PDT) From: David Hu To: sumit.semwal@linaro.org, christian.koenig@amd.com Cc: alex@shazbot.org, ankita@nvidia.com, chriscli@google.com, david.laight.linux@gmail.com, dri-devel@lists.freedesktop.org, iommu@lists.linux.dev, jgg@ziepe.ca, jmoroni@google.com, kevin.tian@intel.com, kpberry@google.com, leon@kernel.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, nicolinc@nvidia.com, praan@google.com, sashiko-bot@kernel.org, stable@vger.kernel.org, viursachi@google.com, xuehaohu@google.com Subject: [PATCH v8 0/2] dma-buf: Fix silent overflow and alignment Date: Tue, 1 Sep 2026 17:08:47 +0000 Message-ID: <20260901170849.4052816-1-dhu@x6u.co> X-Mailer: git-send-email 2.55.0.966.g6673acef38-goog Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: David Hu This series address two related issues in scatter-gather mapping, specifically for the MMIO based dma-buf mapping. The fixes ensure sgt mapping is correct, and proper for large MMIO regions. Patch 1 fixes a silent integer overflow for mapping length exceeding 4G (Previously submitted as [PATCH v7] dma-buf: Fix silent overflow for phys vec to sgt) https://lore.kernel.org/all/20260609164047.486227-1-xuehaohu@google.com/ Patch 2 Splits sgl by largest page aligned chunk (Previously submitted as [PATCH v3] dma-buf: Split sgl by largest page-aligned chunk) https://lore.kernel.org/all/20260722233806.3922093-1-dhu@x6u.co/ Changes in v8: - Combined the two patches into one unified series to avoid merge conflicts. - Collected Reviewed-by tag from Leon Romanovsky for Patch 2. David Hu (2): dma-buf: Fix silent overflow for phys vec to sgt dma-buf: Split sgl by largest page-aligned chunk drivers/dma-buf/dma-buf-mapping.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) -- 2.55.0.897.gb25b4bd76c-goog