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b=SbEu0mJ2dvQV/K5tuQS9fLd/5QfQEZJ1AuXyxzFLEGHOPmX5Q5RgBY6Jb9MLmGgtP KsXdOxp0Un8VMpdkZZOGbRjtlpT/NkkOP82QEqIB2TcMAdq/EqKujVy+tPpPvQIkv5 GbYswH+1Ovsc9ReRSRi3irUbs9cbqZCSAHKsmXELTAWcvrkD9tj6Dw48Cp+Oft1n9j 1oQBHLA5Jew9pc0r+xH8xc93+iTk5hiDatPmX3eECeN8S9hy/8aG+afOr90uhU3zf1 g/CvKeLb54HC8JWQKCb0cTXVUoiXukXE4RvG36Z5jozMro9gcDV3tXQCzc5Yt/a4O4 77Agr73H0j61A== Date: Wed, 25 Mar 2026 09:16:48 -0500 From: Rob Herring To: Marek Szyprowski Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux.dev, Krzysztof Kozlowski , Oreoluwa Babatunde , Saravana Kannan , Andrew Morton , Robin Murphy Subject: Re: [PATCH v3 0/7] Refactor reserved memory regions handling code Message-ID: <20260325141648.GA2685599-robh@kernel.org> References: <20260325090023.3175348-1-m.szyprowski@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260325090023.3175348-1-m.szyprowski@samsung.com> X-Rspamd-Queue-Id: 52D0940003 X-Stat-Signature: d7uptwsbfz7ne74eohzw3fdxn3bsebzy X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1774448210-415074 X-HE-Meta: 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 G7u+QHXp WIHzvpaOAbSmIijnW8owIrGp2ouCBNpWlb9SXdepoabYk9SHOJeEDScZTtv4kQ7f2xZySz60glQ8ptnClRQi6ccvq9CIZOmzfzgYdHIc7xE4QdXxCREBn4gdc3gfaAkpVXX34NiDoNAif7g4NHj9lzWnKvwtnMc5XYjsczTsy6oGlJ6sl87WvrtmlnAee2W795t3hRtpDfQjBVv7aklJRU0+xqEm+hCEQPcyGHxhEE4fFgfVf+ARXnJz9rOoNT2Xpz64QcSr1vKptwk7MbGuSUdxbaSFjl2Yp7ZpAzzUfPzTSp5yXqAtf+kwIkK4A0Fhh4xfTFsuMoqsiHwHn3pqN3M28OEbWlaFpmaR/Ak0RFcfJ7ig= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Mar 25, 2026 at 10:00:16AM +0100, Marek Szyprowski wrote: > Hello, > > The reserved memory regions handling code was reworked to handle > unlimited so called "static" memory nodes in commit 00c9a452a235 ("of: > reserved_mem: Add code to dynamically allocate reserved_mem array"). > > The side effect of this rework was a set of bugs fixed later by commits > 0fd17e598333 ("of: reserved_mem: Allow reserved_mem framework detect > "cma=" kernel param") and 2c223f7239f3 ("of: reserved_mem: Restructure > call site for dma_contiguous_early_fixup()"). As a result, the code in > drivers/of/of_reserved_mem.c became a mix of generic code and CMA > specific fixups. > > In this patchset I try to untangle this spaghetti and perform some code > cleanup. I hope nothing breaks this time. > > Best regards > Marek Szyprowski, PhD > Samsung R&D Institute Poland > > > Changelog: > > v3: > - fixed more issues pointed by Sashiko in > https://sashiko.dev/#/patchset/20260323100901.4079171-1-m.szyprowski@samsung.com > (restored use of _OF_DECLARE macro, extended some comments and commit > descriptions, the remaining items I consider not relevant) > > v2: https://lore.kernel.org/all/20260323100901.4079171-1-m.szyprowski@samsung.com/ > - added missing ops assignment removal in tegra210-emc-table and swiotlb > drivers > - fixed issues pointed by kernel test robot and Sashiko: removed typos, > improved comments > - fixed incorrect node passed to fdt_validate_reserved_mem_node() in > fdt_scan_reserved_mem_reg_nodes() > > v1: https://lore.kernel.org/all/20260313150802.1121442-1-m.szyprowski@samsung.com/ > - initial version > > > Patch summary: > > Marek Szyprowski (7): > of: reserved_mem: remove fdt node from the structure > of: reserved_mem: use -ENODEV instead of -ENOENT > of: reserved_mem: switch to ops based OF_DECLARE() > of: reserved_mem: replace CMA quirks by generic methods > of: reserved_mem: rearrange code a bit > of: reserved_mem: clarify fdt_scan_reserved_mem*() functions > of: reserved_mem: rework fdt_init_reserved_mem_node() I've applied the series, thanks! Rob