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 AC2DEC48BC4 for ; Thu, 15 Feb 2024 22:53:57 +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:References:Cc:To:From: 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=8K16QpG6Ofs5CP3GuVh+LQ2lzmdeYQV+SE3bxS6aXVc=; b=ImKkDfwgBU6nle 32vVQV6T2XhzDQZLmGGoVKnHJfIwc81TpYI915UtLpX3RYp3zKYY5xezawBAKVM7Tmkw17A3bjKSQ K1zNsE9AEJAslkCOHEhNeh4aJLEgw+HdksC5p+Z3eHYSPu4Aw2pcOC/msTNcEaDaRv7vtX8z37JEx Abe/N7OhRUGlIMuc2uYMINoAFo8qPgpiwQZ8e4tj08qZSL+2ZpCllT2uRzTAn2RKGXuHK++F+SXVj havoeGbSUEVS4a++k6uyDsKFiYG2Wv59+SF6ua4WSvC37MsuKLSTHCij+qD5ytruWWEfsQvYXf0WN UBomj8B5VcX5mlw34CLQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rakbx-00000000OLz-3zol; Thu, 15 Feb 2024 22:53:45 +0000 Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rakbs-00000000OJb-2osQ for linux-arm-kernel@lists.infradead.org; Thu, 15 Feb 2024 22:53:42 +0000 Received: from [100.64.201.39] (unknown [20.29.225.195]) by linux.microsoft.com (Postfix) with ESMTPSA id C773020B2000; Thu, 15 Feb 2024 14:53:36 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com C773020B2000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1708037617; bh=CiJoh5nLY9w4ZLUhjoAD3yt82tHarGa4oEGpH+oxCsw=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=pmAz6Pz7oV3RhM3USNZQ0wb8AA62St+0eW+k3/jxNYTU1MCMDqmOa/BW7BjQyyqQ6 4mWlylw5SlV3mGkk4ZPGx3pQ6gEhp4dcMfoFBMMEsP0J3jlYtMu6ORVw3EHK52kFWJ Gm/s6nKNiwerC7Qvsu4XUFEMxAS21wKxGkl1Yknw= Message-ID: Date: Thu, 15 Feb 2024 14:53:36 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: Subscribe Microsoft Azure Cobalt 100 to ARM Neoverse N2 errata Content-Language: en-US From: Easwar Hariharan To: Oliver Upton Cc: Catalin Marinas , Will Deacon , Jonathan Corbet , Marc Zyngier , Andre Przywara , Rob Herring , Zenghui Yu , Mark Rutland , "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" , "open list:DOCUMENTATION" , open list , Anshuman Khandual , stable@vger.kernel.org References: <20240212232909.2276378-1-eahariha@linux.microsoft.com> <18b3ac3e-2bfc-4fce-9be4-3e75e487f9fc@linux.microsoft.com> In-Reply-To: <18b3ac3e-2bfc-4fce-9be4-3e75e487f9fc@linux.microsoft.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240215_145340_843670_D904C8CD X-CRM114-Status: GOOD ( 10.24 ) X-BeenThere: linux-arm-kernel@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: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2/13/2024 4:19 PM, Easwar Hariharan wrote: > On 2/12/2024 3:44 PM, Oliver Upton wrote: >> Hi Easwar, >> >> On Mon, Feb 12, 2024 at 11:29:06PM +0000, Easwar Hariharan wrote: >>> Add the MIDR value of Microsoft Azure Cobalt 100, which is a Microsoft >>> implemented CPU based on r0p0 of the ARM Neoverse N2 CPU, and therefore >>> suffers from all the same errata. >> >> Can you comment at all on where one might find this MIDR? That is, does >> your hypervisor report the native MIDR of the implementation or does it >> repaint it as an Arm Neoverse N2 (0x410FD490)? > > We will check on the Microsoft hypervisor's plans, and get back to you. > > Notwithstanding that, we do have baremetal use cases for Microsoft Azure Cobalt 100 > as well where this MIDR value will show through. > We checked in with our Microsoft hypervisor colleagues, and they do repaint the Azure Cobalt 100 as an Arm Neoverse N2, but again, we do have baremetal use cases. Thanks, Easwar _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel