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 5AC99C678D5 for ; Fri, 24 Feb 2023 15:22:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=eCdm6JzKPliHoG9PUPVOcK88HDbBEgkDX8kVhxsqtsk=; b=Ef6gWDVTu4x7vt G7FQFqGETHXlWeQW9bptttG5n9bmzns0qyrMCJi+ej9Q1fUUSWlFaI0OmCU9+YWo9RnKu0mtzaXFH aRuAhe3CxllodnxYe/pZaHKCbZ8EJ1rbd2M29Dyweh6mmuAoxKg7QYZB2ZROUwKj8EB59gsNth5hk c1J/d5O8bL41Pp2DX17GqVnFtbD/5NdB2UHLQcF6fE4I1bx+TUOyZ6vt2Bv5yJtxDXWhBch1OBebb kIZJSsyd2LZgNTGM1f7Szn5JMAvgLGJH4krXScXJOZODhIscgeFz+6ocZvoRAYeM+Zs0QNMGolgnT sk14gX4FvTkiZUvQahAg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pVZu3-002wW4-GE; Fri, 24 Feb 2023 15:22:31 +0000 Received: from mga06b.intel.com ([134.134.136.31] helo=mga06.intel.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pVZty-002wT6-Ts for kexec@lists.infradead.org; Fri, 24 Feb 2023 15:22:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1677252146; x=1708788146; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=MhGM3MYVaJvxOcvRH4LRPO69GfRXxYIcxsnbb3HzPvE=; b=JGZSmQC+A8hWpc7y3LNHz9yszR37jDbTRBP+c43Hn6wryba1MBRaa1Vo FE93kqYGiPVrAGuI3mNUDQ/KK+nijTbWtLI+6Gg4X4YKIgPQF2GvhPzrr UZXeJ7YGk8SgPwAKvMy6oKT+Z7yEMjiQ0QHBdPvNMpO5pH/sZJMS84IAT HRDpjVlmBAlaQo3+86xtpehYW6ZrB6Q8bEpaTbQAxOjYuX62yfr+Mj5KI j433fPRtbefH+xynVTnETG6CulHOMtymE7bX8G+GDtSeKHYi9tisxGwti L9l0ELvy8n/zOorIqcJ6Nftzf8rWsUl/E7lCRqALpo7JtCzl7FHuT3bm3 Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10631"; a="396009167" X-IronPort-AV: E=Sophos;i="5.97,325,1669104000"; d="scan'208";a="396009167" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Feb 2023 07:22:19 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10631"; a="650391419" X-IronPort-AV: E=Sophos;i="5.97,325,1669104000"; d="scan'208";a="650391419" Received: from mrevans-mobl.amr.corp.intel.com (HELO [10.212.167.241]) ([10.212.167.241]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Feb 2023 07:22:18 -0800 Message-ID: Date: Fri, 24 Feb 2023 07:22:18 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1 Subject: Re: [PATCH 0/2] Kexec enabling in TDX guest Content-Language: en-US To: "Kirill A. Shutemov" , David Woodhouse Cc: Borislav Petkov , Kuppuswamy Sathyanarayanan , Thomas Gleixner , Isaku Yamahata , x86@kernel.org, linux-coco@lists.linux.dev, kexec@lists.infradead.org, linux-kernel@vger.kernel.org References: <20230213234836.3683-1-kirill.shutemov@linux.intel.com> <6b09a3505bf3deaa11906a2ecb9d15c4ec427ea2.camel@infradead.org> <20230224143004.xqhpv6upn2fkqkjp@box.shutemov.name> From: Dave Hansen In-Reply-To: <20230224143004.xqhpv6upn2fkqkjp@box.shutemov.name> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230224_072227_056828_7996F43C X-CRM114-Status: UNSURE ( 6.43 ) X-CRM114-Notice: Please train this message. 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On 2/24/23 06:30, Kirill A. Shutemov wrote: > Ideally, it has to be addressed on BIOS level: it has to provide a way to > offline CPUs, putting it back to pre-wakeup state. Is there anything stopping us from just parking the CPUs in a loop looking at 'acpi_mp_wake_mailbox_paddr'? Basically park them in a way which is indistinguishable from what the BIOS did. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec