From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6E972C61DCB for ; Fri, 28 Aug 2026 13:47:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=q0eNhqvMX0/iJyiBrToLKqr6Y2gSqCXGI85V9zCEwnI=; b=ZtLLqalp/4Rmz//dZkxoa/0ih0 isojzStTpfXKrQRm3eYtZijf2lPnMyTVDcvAEnfjwO0Ilk3f8mb9bYZt2KUOYj7txfON44K2+J+1Q tHtoWxco/eBkbWh8P8OI33+vmugtfNWOuQTyOWCr/GlkVDRVp2Qm1exhVadikLuq1/9AgRAb8rihg g2/B7uRvgNj1uTml0/oW5fCaUTT1t1U6HzzDS9hJM34m00Gl27B8/QYwOJ6j3JcKxiYrJn9kaq5G5 9YxLPI/ckJWmf55DE3H2QWY5iVU7202HddDDZc+6h6T7FlwXwmdfdr9o6Zfqg7r0rDZgYRd22QfuW sn/WV2WA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wzwvt-00000005qvQ-1QK9; Fri, 28 Aug 2026 13:47:49 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wzwvs-00000005qvF-1Hjd for kexec@lists.infradead.org; Fri, 28 Aug 2026 13:47:48 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id E4EBF408D3; Fri, 28 Aug 2026 13:47:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9C3CD1F00A3A; Fri, 28 Aug 2026 13:47:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787924867; bh=q0eNhqvMX0/iJyiBrToLKqr6Y2gSqCXGI85V9zCEwnI=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=B8OVBi4twqUHT/S7twyHkWKJvi0Xty50bWZLsgLdUjH3nHQVyiaBK1AsPVPty6GY3 CpLNAUUkFEyJ4+w/M1poxHibGE1QkZfvatu0qnlUkyLZ6sB5cRTVmGrT8v0XQDQITu o7t7HCrfJFnRBBj0/q5rE0t6eS5wSCG83cu/ZDFcV2U7x4JtmHAL9mKoaktAxwvPaI NYDwT5qjwRAZkfmmJP8yyRlSIRCkU31HEHBsdlYCRbUSD2/lsmL6OFuAYMqddqUtCz 9e4DAviAQYM8qfJvDF2KYmTB4Efky7gFx9GpzI6j0wCr4ltT6ZBU9rIarIEnjsNY8r 4KeEra8xa2S/Q== Received: from phl-compute-02.internal (phl-compute-02.internal [10.202.2.42]) by mailfauth.ams.internal (Postfix) with ESMTP id 407C8198005A; Fri, 28 Aug 2026 09:47:42 -0400 (EDT) Received: from phl-frontend-04 ([10.202.2.163]) by phl-compute-02.internal (MEProxy); Fri, 28 Aug 2026 09:47:45 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: dmFkZTGhuVEzINoxJX9iq+sBnTJn/YGfvUD4BbjHGtjEf0PAh/o/tXr2vuzbX9U8fMq0zF J5YoWoO47NsZs3vKY4l9KIcKbSS0+BRZwuTUJ9JEu04yQDq/7Q2T0DrqDQ14+GS1y4+Kii qbLumtOCdeF31VVkfQ15zMW49EJKPf9ai0w8NgPevT7/2tBdBdQF+5JevWefJ8gD9CFyC6 vy8t6c7nt9Z81+VYeNx6xVt0oCjgXOQEQ8R1XTjNdsxXQezprFGSM7EVxQoC61FUFtMtjl j14I5/V5nIn5meZ617TWS99yg4QSmnCPaVaojmBd58z3obTWdBXUPQx6YOwdozC1RPkake b7CQo7h8uFUrdwxo+a+KEEZRo+rgnaAsXWTX3FZp40gpI88PBF5pdoEJQoYaVNDsOYdDLv nnOn00p8Mp1YDklKa5PNmImiyNBrjQq3pWispVkCYL/vHtE6rX0yKfGG/mSXj2CxL8wv4i r0y0+WYSXNM3YyKgzh/zanZGTQ8dGkGWLsvQDqq9bBRVJpv+ELs7/2/XXATJ4u91Jmv4mc tIbaJNv5r4NMz9B8LAhg6+b4cg8ASkvBonDuNoJuQ96vXhlmquzGIh0JUSLqN/uz6B0edi gEefM8IBWm9PYMz+eSfeOcqLTGPPyW08nMQUgJOuQmELSCPiO+sNgH26i5Kg X-ME-Proxy: Feedback-ID: i10464835:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 28 Aug 2026 09:47:40 -0400 (EDT) Date: Fri, 28 Aug 2026 14:47:39 +0100 From: Kiryl Shutsemau To: Breno Leitao Cc: Ard Biesheuvel , Ilias Apalodimas , Miaohe Lin , Naoya Horiguchi , Andrew Morton , kexec@lists.infradead.org, David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rmikey@meta.com, riel@surriel.com, kernel-team@meta.com Subject: Re: [PATCH v3 1/5] mm/memory-failure: efi: add the LINUX_EFI_POISONED_MEMORY configuration table Message-ID: References: <20260826-hwpoison-kho-v3-0-6f79c4b605bc@debian.org> <20260826-hwpoison-kho-v3-1-6f79c4b605bc@debian.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260826-hwpoison-kho-v3-1-6f79c4b605bc@debian.org> X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On Wed, Aug 26, 2026 at 05:03:52AM -0700, Breno Leitao wrote: > @@ -1271,6 +1274,16 @@ struct linux_efi_memreserve { > #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \ > / sizeof_field(struct linux_efi_memreserve, entry[0])) > > +/* Bit N covers unit N of physical address space, counting from address 0. */ > +struct linux_efi_poisoned_memory { > + u32 version; > + u32 unit_size; /* bytes of phys space per bitmap bit */ > + u64 size; /* bitmap size in bytes */ > + unsigned long bitmap[]; > +}; struct efi_unaccepted_memory has 'phys_base'. Do we want it here too? It can be helpful if physical memory starts very high for some reason. I believe it is common for risc-v. Tenstorrent Blackhole card has 4G of RAM based at 0x400030000000. Counting from address 0 that is a 4M bitmap for 4G of RAM. :-/ -- Kiryl Shutsemau / Kirill A. Shutemov