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 41161606A31C for ; Thu, 12 Nov 2026 11:33:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=v/w8HC9h; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=onDgyYuJ 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:Date: Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Cc:To:Subject: From:Message-ID:MIME-Version:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=fkFNkK9waQrr04LqwebhOzpt6VfUKvnie5m0HgQWrUo=; b=v/w8HC9hHVDNP6bBTepEo9qKcn EK6FxyJ9Z86+5ENWSh2eyYD4+rnRDiMcrsjXeLsNrUmNBH17uB4EYk7Z4bIx6B0PwROF59k1n50Cd U/CO2K7QgGW6Nm4PUyaO+fjVHOYUWwZxcPNW1GtgL57NF36TYYqiCxBL/YHp4GAgpgUW8LhJWSAt9 dsdxfLlGG4Mlc2kC42ZWcIIpHZjqGdLCzBGiP2x0KnSym5ClQ0jP24wuKLzl4gCQR745HjdEKjFCh Mb3RComlAaydmhwmmleK0S6a6Z6qGa4UuJTyqSFHt8PrpR4LNBBYbl0biRwHf5UH5rACqZlTHDKL/ OE5y/WCA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRT3Q-00000009k2s-44O7; Thu, 12 Nov 2026 11:33:20 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRT3O-00000009k2P-2tFt for kexec@lists.infradead.org; Thu, 12 Nov 2026 11:33:18 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 25E8161918; Thu, 12 Nov 2026 11:33:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D8511F00A05; Thu, 12 Nov 2026 11:33:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794483197; bh=fkFNkK9waQrr04LqwebhOzpt6VfUKvnie5m0HgQWrUo=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=onDgyYuJKgV44zugwU9gGwPzSAFyEAxTs/scsFiB0tU8kRJbXb2A3jG8IdykKNp2a 6zPxM0dPoTwCGGvxOZ6L/z3kL0BzkcEyREoh7k3n+otLvhLnxWcy6EDRvxrYzKOnei pbfH2+bz6mqvNyuTwv+igEJfT1jrvHfD5cyQWfg/qIhCrgVTz11baOAxOQ/ZCsKFlI v2CQGk+TuMgbV7PIVpo402NA6MWbw1y3+vG3NorVAg/o7Jz34JKpBJLofuMbBxMhbS 0jT1Es9hS8e2HE1WKQM/cfcJBAJtXrHgc4bBX0hlzElDzSAEuV3P1UHNzc+r7BUIlu W5xAOXdZJoAJw== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v1 4/8] s390/boot: Allow additional usable memory ranges To: "Mikhail Zaslonko" , "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" Cc: "Ilya Leoshkevich" , "Andrew Morton" , "Baoquan He" , "Mike Rapoport" , "Pasha Tatashin" , "Pratyush Yadav" , "Dave Young" , "Jiri Bohac" , "Jonathan Corbet" , "Usama Arif" , linux-s390@vger.kernel.org, kexec@lists.infradead.org, "Christian Borntraeger" In-Reply-To: <20261112112105.1169118-5-zaslonko@linux.ibm.com> References: <20261112112105.1169118-1-zaslonko@linux.ibm.com> <20261112112105.1169118-5-zaslonko@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 12 Nov 2026 11:33:16 +0000 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=-10.9 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: > All online memory above the usable limit is left unused. A kdump kernel > will need a few ranges above that limit for the crashkernel CMA memory > of the crashed kernel. >=20 > Add physmem_add_usable_range() to register usable memory ranges. Clip > them to ident_map_size and merge overlapping or adjacent ranges. > for_each_physmem_usable_range() walks their intersection with the > online memory ranges. >=20 > Use the same ranges for boot allocations, identity mappings, KASAN > shadow and memblock. Keep the allocation position separate from the > usable ranges. >=20 > When no extra ranges are added, nothing changes. >=20 > Co-developed-by: Vasily Gorbik > Signed-off-by: Vasily Gorbik > Signed-off-by: Mikhail Zaslonko Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261112112105.1169= 118-1-zaslonko@linux.ibm.com?part=3D4