From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 991FF606A319 for ; Tue, 20 Oct 2026 08:21:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=cK7v/GJX; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=eRIVjcZP DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Reply-To:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Cc:To:Subject: From:MIME-Version:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+r35xYWViHAiR7sxYREvQL9rqqd84gi08nBU3k0Auv4=; b=cK7v/GJXH78+7Jv4vo13l4gcgb LD+4lPXo4S5tGd4xMpngFSVGzQdFiPNEjKwYoJC+It2uXsSUPNXIPbNz19e2n56aFxKWnfCwqgfJM muKMii32xr4rftkZvAwhn9qrt1mP9N3yIfogMVZS3NroZY9w91YMQOcPiqcEmOA+QORfI1X7vd/vH wqmoYI4nIlqJs7BjciWA1ZU7771UXNudQ6SkDnnYmcsonC0EoFKKy5odEbEmbcuWIUKM3WDVQHV3+ ah2zJmYClQM6+oEYYEvNasHkzsVHaH1EaaYGxsrlZFdDbVIM7KVIzKlpXtZ3TWEhY2YR7kovClipK td0xdntA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xJ56P-000000099bi-0mQ9; Tue, 20 Oct 2026 08:21:45 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xBFHV-00000001BXg-4237; Mon, 28 Sep 2026 17:36:50 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id A111140A75; Mon, 28 Sep 2026 17:36:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C373E1F000FF; Mon, 28 Sep 2026 17:36:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790617009; bh=+r35xYWViHAiR7sxYREvQL9rqqd84gi08nBU3k0Auv4=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=eRIVjcZP6kE3UK//4StpY0kavKE44Mjonn9fR2bQ5ywHPLGZY7CPKGdakw96FJB7v XI+YZlkU9mc3zKkw3tpHXI5R2ZR5F0wgAmT8jGSV8rfq/qjY3Mrlw3/qBbfO5WKuOx s2pwzzkvQ1tgzCydYhj5KU1G9S/RnWjDK1uCICxHYGJtHZRNh2ljgOgjqFSmyVgKre qv2Q2JEvM82S9mXhMPyboIDBYJYhYKAkhVWFWtA31dzU9VPBm+4Fvu0cbZEH7y0hKC /4u5L0HiD/WxZdASK4k3eJOlokcp4muwL/as5ZaRhM3Icgjaz+U5b9iPTTX2OZOJTw 8GfrReHg+WMTQ== From: sashiko-bot@kernel.org Subject: Re: [PATCH v3 01/12] kexec: Add a crash memaction registry To: "Pasha Tatashin" , "Dave Young" , "Mimi Zohar" , "Kiryl Shutsemau" , "Lorenzo Stoakes" , "Pedro Falcato" , "Usama Arif" , "Johannes Weiner" , "Mark Rutland" , "Pratyush Yadav" , "Vlastimil Babka" , "Alasdair Kergon" , "Baoquan He" , "Matthew Brost" , "Joshua Hahn" , "Ying Huang" , "Serge E. Hallyn" , "Jann Horn" , "Herbert Xu" , "David S. Miller" , "Michal Hocko" , "Nico Pache" , "Jarkko Sakkinen" , "Shuah Khan" , "David Hildenbrand" , "Mikulas Patocka" , "Will Deacon" , "Danilo Krummrich" , "Gregory Price" , "Harry Yoo" , "James Morris" , "James Bottomley" , "Oscar Salvador" , "Ryan Roberts" , "Greg Kroah-Hartman" , "Suren Baghdasaryan" , "Lance Yang" , "Muchun Song" , "Rob Herring" , "Paul Moore" , "Rik van Riel" , "Peter Xu" , "Arnd Bergmann" , "Benjamin Marzinski" , "Byungchul Park" , "Saravana Kannan" , "Randy Dunlap" , "Zi Yan" , "Liam R. Howlett" , "Dev Jain" , "Barry Song" , "Baolin Wang" , "David Howells" , "Jonathan Corbet" , "Catalin Marinas" , "Mike Rapoport" , =?utf-8?b?SmFuIFNlYmFzdGlhbiBHw7Z0dGU=?= , "Rafael J. Wysocki" , "Mike Snitzer" , "Alistair Popple" , "Andrew Morton" , "Brendan Jackman" Cc: robh@kernel.org, linux-integrity@vger.kernel.org, linux-crypto@vger.kernel.org, keyrings@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-security-module@vger.kernel.org, dm-devel@lists.linux.dev, linux-kernel@vger.kernel.org, driver-core@lists.linux.dev, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, devicetree@vger.kernel.org, "Eric Biggers" , kexec@lists.infradead.org, conor+dt@kernel.org, linux-fsdevel@vger.kernel.org In-Reply-To: <20260928-crash-memaction-upstream-20260921-v3-1-e511e9ee2329@jaseg.de> References: <20260928-crash-memaction-upstream-20260921-v3-0-e511e9ee2329@jaseg.de> <20260928-crash-memaction-upstream-20260921-v3-1-e511e9ee2329@jaseg.de> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 28 Sep 2026 17:36:45 +0000 Message-Id: <20260928173645.C373E1F000FF@smtp.kernel.org> X-Mailman-Approved-At: Tue, 20 Oct 2026 01:21:10 -0700 X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sashiko-reviews@lists.linux.dev Sender: "kexec" X-Spam-Status: No, score=-11.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 X-Archived-By: > Add a registry identifying page use to a kdump kernel. Intended uses are > wiping of crypto keys on crash, or omitting pages holding e.g. crypto > keys or unimportant caches from crash dumps. >=20 > The registry is a bitmap with one bit for each physical page. The > meaning of the bits is set by the crash_memaction=3D cmdline param. When > not present, no bitmap is allocated. Marking is a lock-free bitmap > update with no allocation, so it is safe from any context. >=20 > The bitmap and its metadata is handed over to the kdump kernel through > elfcorehdr. >=20 > Signed-off-by: Jan Sebastian G=C3=B6tte Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260928-crash-mema= ction-upstream-20260921-v3-0-e511e9ee2329@jaseg.de?part=3D1