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t=1790067250; bh=YLzEa2NgKc01BCihyFFvuyxmNzf4DGeagOdMFCmVpEw=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=eZBhPXfeygiiU2f/pWtXEIFzdO1vnHyv9utcEzx5sCi5XdKNrN9kNs6QgfMYMO2cl JHdWSJG6JobZ2aIXM0UrxDOm/Nhuzxt9hTmfLApAHw2EqHRBVimWQRaS9tAfMLmfD6 A28ePCpBvIfXoIdtIPyuQ1qyX5YDEPfFQzjLOLakzjCh9L9y9ITyD/W6GuRURRZhn3 HG3zRcy7T1ZQr4VDjrCo+Vw8XsWqteTMKv/qE9J+UYlygb4nz3aKGuC3N0t5mEbeA7 DD7oe4nIcp45NiurQv8bVw4Z4TwyviX22YWABtkICBG7pYIyGUvp/BPbFddhgrwRa8 cftqB5tqV8T7Q== From: sashiko-bot@kernel.org Subject: Re: [PATCH v7 6/9] of: reserved_mem: add dumpable flag to opt-in vmcore Reply-To: sashiko-reviews@lists.linux.dev To: robh@kernel.org, baoquan.he@linux.dev, rppt@kernel.org, "Wandun Chen" , m.szyprowski@samsung.com Cc: mingo@redhat.com, saravanak@kernel.org, pjw@kernel.org, linux-riscv@lists.infradead.org, pasha.tatashin@soleen.com, kernel@xen0n.name, iommu@lists.linux.dev, ruirui.yang@linux.dev, tglx@kernel.org, devicetree@vger.kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, catalin.marinas@arm.com, dave.hansen@linux.intel.com, loongarch@lists.linux.dev, robin.murphy@arm.com, linux-kernel@vger.kernel.org, bp@alien8.de, pratyush@kernel.org, alex@ghiti.fr, chenhuacai@kernel.org, linux-arm-kernel@lists.infradead.org, hpa@zytor.com, linux-mm@kvack.org, kexec@lists.infradead.org, mark.rutland@arm.com, x86@kernel.org, akpm@linux-foundation.org, conor+dt@kernel.org, will@kernel.org In-Reply-To: <20260922084256.1515554-7-chenwandun1@gmail.com> References: <20260922084256.1515554-1-chenwandun1@gmail.com> <20260922084256.1515554-7-chenwandun1@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 22 Sep 2026 08:54:08 +0000 Message-Id: <20260922085409.18A301F000FF@smtp.kernel.org> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 8F220A0004 X-Rspam-User: X-Stat-Signature: a71t3ixhqip397op5ekzpnjar6ddzp9y X-HE-Tag: 1790067251-799991 X-HE-Meta: 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 vUjZF5WM 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > From: Wandun Chen >=20 > Add a 'dumpable' flag to struct reserved_mem to decide whether a > reserved area should be included in the kdump vmcore. Non-dumpable > regions are later marked MEMBLOCK_NODUMP;the filtering itself happens > in memblock, keeping the arch kdump code independent of the DT API. >=20 > Most reserved regions are owned by devices and do not contain data > useful for kernel crash analysis, so dumpable default to false. > Reusable CMA regions are different: their pages are handed back to the > buddy allocator and may contain key data for crash analysis, so set > dumpable to true in rmem_cma_setup(). >=20 > The dumpable flag is also used to check /memreserve/ entries for overlap > with other dumpable regions. >=20 > Suggested-by: Rob Herring > Signed-off-by: Wandun Chen Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260922084256.1515= 554-1-chenwandun1@gmail.com?part=3D6