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[34.83.136.168]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38e2a06182csm807385a91.0.2026.07.15.12.59.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jul 2026 12:59:02 -0700 (PDT) Date: Wed, 15 Jul 2026 19:58:57 +0000 From: Samiullah Khawaja To: Leon Romanovsky Cc: Marek Szyprowski , Will Deacon , Jason Gunthorpe , Pasha Tatashin , Mike Rapoport , Pratyush Yadav , Alexander Graf , Robin Murphy , Kevin Tian , iommu@lists.linux.dev, kexec@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, David Matlack , Andrew Morton , Pranjal Shrivastava , Vipin Sharma Subject: Re: [RFC PATCH v2 03/10] dma: contiguous: Add API to check if an allocation is from CMA Message-ID: References: <20260708234854.4044652-1-skhawaja@google.com> <20260708234854.4044652-4-skhawaja@google.com> <20260715062116.GA21348@unreal> 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=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20260715062116.GA21348@unreal> On Wed, Jul 15, 2026 at 09:21:16AM +0300, Leon Romanovsky wrote: >On Wed, Jul 08, 2026 at 11:48:47PM +0000, Samiullah Khawaja wrote: >> Add an API that uses cma_for_each() to check whether a DMA allocation is >> from a CMA region. >> >> Signed-off-by: Samiullah Khawaja >> --- >> include/linux/dma-map-ops.h | 6 ++++++ >> kernel/dma/contiguous.c | 24 ++++++++++++++++++++++++ >> 2 files changed, 30 insertions(+) > ><...> > >> #ifdef CONFIG_DMA_DECLARE_COHERENT >> diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c >> index 03f52bd17120..0b1702bf39ca 100644 >> --- a/kernel/dma/contiguous.c >> +++ b/kernel/dma/contiguous.c >> @@ -130,6 +130,30 @@ struct cma *dev_get_cma_area(struct device *dev) >> } >> EXPORT_SYMBOL_GPL(dev_get_cma_area); >> >> +struct dma_cma_check_data { >> + phys_addr_t start; >> + phys_addr_t end; >> +}; > >If this series is retried, use "struct phys_vec" here instead of >declaring a new structure: >https://elixir.bootlin.com/linux/v7.1.3/source/include/linux/types.h#L173 Sure this sounds great. > >Thanks. Sami