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 X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6FA2BC47404 for ; Fri, 11 Oct 2019 13:40:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 43ECD2196E for ; Fri, 11 Oct 2019 13:40:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="VKq0sCcl"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="eXa6dZiI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728093AbfJKNkP (ORCPT ); Fri, 11 Oct 2019 09:40:15 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:45720 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727950AbfJKNkP (ORCPT ); Fri, 11 Oct 2019 09:40:15 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B2FBD6087B; Fri, 11 Oct 2019 13:40:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1570801214; bh=woLGvO2KYpg2LI7wSKbSPuYqu+XlHMDuEXAS7R5cZOs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=VKq0sCclKNivwnNSoPPjcMpAVnrxUj4hBlG/L0azIufkvsk5DtKK81UjfwA7wCJow btgYgwBTr6mAFB3AVSiDgweZ8Ie7AaMZ95b+zWmH2d5v5bLzl7SkilRllSeOnknqQs w5lfPP3qKW6Fm4NPgYWYvNJbH+7Xc+zrMt1coNDU= Received: from mail.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id B5EB160265; Fri, 11 Oct 2019 13:40:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1570801213; bh=woLGvO2KYpg2LI7wSKbSPuYqu+XlHMDuEXAS7R5cZOs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=eXa6dZiI4q1VAhio2kWuZBGU1fCbx8+AHMQtQJ9Br1yNLHJF6zk1weYdOIRYZyeeJ dWKjwDS2U8FZt+T06BwB+V496sxzXc0wxItPawySpmI1hvxAPWbtEzYMZ4nKenzNnd qj0OkdKjd172OZmH1j11jkel4U/S2MCEvWJGg76g= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 11 Oct 2019 19:10:13 +0530 From: Sai Prakash Ranjan To: Marc Zyngier Cc: Mark Rutland , rnayak@codeaurora.org, suzuki.poulose@arm.com, catalin.marinas@arm.com, linux-arm-kernel , linux-kernel@vger.kernel.org, jeremy.linton@arm.com, bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, andrew.murray@arm.com, will@kernel.org, Dave.Martin@arm.com, linux-arm-kernel@lists.infradead.org, linux-arm-msm-owner@vger.kernel.org, marc.w.gonzalez@free.fr Subject: Re: Relax CPU features sanity checking on heterogeneous architectures In-Reply-To: <20191011143442.515659f4@why> References: <20191011105010.GA29364@lakrids.cambridge.arm.com> <7910f428bd96834c15fb56262f3c10f8@codeaurora.org> <20191011143442.515659f4@why> Message-ID: X-Sender: saiprakash.ranjan@codeaurora.org User-Agent: Roundcube Webmail/1.2.5 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 2019-10-11 19:04, Marc Zyngier wrote: > On Fri, 11 Oct 2019 18:47:39 +0530 > Sai Prakash Ranjan wrote: > >> Hi Mark, >> >> Thanks a lot for the detailed explanations, I did have a look at all >> the variations before posting this. >> >> On 2019-10-11 16:20, Mark Rutland wrote: >> > Hi, >> > >> > On Fri, Oct 11, 2019 at 11:19:00AM +0530, Sai Prakash Ranjan wrote: >> >> On latest QCOM SoCs like SM8150 and SC7180 with big.LITTLE arch, below >> >> warnings are observed during bootup of big cpu cores. >> > >> > For reference, which CPUs are in those SoCs? >> > >> >> SM8150 is based on Cortex-A55(little cores) and Cortex-A76(big cores). >> I'm afraid I cannot give details about SC7180 yet. >> >> >> SM8150: >> >> >> [ 0.271177] CPU features: SANITY CHECK: Unexpected variation in >> >> SYS_ID_AA64PFR0_EL1. Boot CPU: 0x00000011112222, CPU4: >> 0x00000011111112 >> > >> > The differing fields are EL3, EL2, and EL1: the boot CPU supports >> > AArch64 and AArch32 at those exception levels, while the secondary only >> > supports AArch64. >> > >> > Do we handle this variation in KVM? >> >> We do not support KVM. > > Mainline does. You don't get to pick and choose what is supported or > not. > Ok thats good. Thanks, Sai -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation 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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00242C47404 for ; Fri, 11 Oct 2019 13:40:24 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C5347214AF for ; Fri, 11 Oct 2019 13:40:23 +0000 (UTC) Authentication-Results: mail.kernel.org; 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h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=VKq0sCclKNivwnNSoPPjcMpAVnrxUj4hBlG/L0azIufkvsk5DtKK81UjfwA7wCJow btgYgwBTr6mAFB3AVSiDgweZ8Ie7AaMZ95b+zWmH2d5v5bLzl7SkilRllSeOnknqQs w5lfPP3qKW6Fm4NPgYWYvNJbH+7Xc+zrMt1coNDU= Received: from mail.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id B5EB160265; Fri, 11 Oct 2019 13:40:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1570801213; bh=woLGvO2KYpg2LI7wSKbSPuYqu+XlHMDuEXAS7R5cZOs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=eXa6dZiI4q1VAhio2kWuZBGU1fCbx8+AHMQtQJ9Br1yNLHJF6zk1weYdOIRYZyeeJ dWKjwDS2U8FZt+T06BwB+V496sxzXc0wxItPawySpmI1hvxAPWbtEzYMZ4nKenzNnd qj0OkdKjd172OZmH1j11jkel4U/S2MCEvWJGg76g= MIME-Version: 1.0 Date: Fri, 11 Oct 2019 19:10:13 +0530 From: Sai Prakash Ranjan To: Marc Zyngier Subject: Re: Relax CPU features sanity checking on heterogeneous architectures In-Reply-To: <20191011143442.515659f4@why> References: <20191011105010.GA29364@lakrids.cambridge.arm.com> <7910f428bd96834c15fb56262f3c10f8@codeaurora.org> <20191011143442.515659f4@why> Message-ID: X-Sender: saiprakash.ranjan@codeaurora.org User-Agent: Roundcube Webmail/1.2.5 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191011_064015_049288_258ABB61 X-CRM114-Status: GOOD ( 10.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-arm-msm-owner@vger.kernel.org, rnayak@codeaurora.org, suzuki.poulose@arm.com, catalin.marinas@arm.com, linux-arm-kernel , marc.w.gonzalez@free.fr, linux-kernel@vger.kernel.org, jeremy.linton@arm.com, bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, andrew.murray@arm.com, will@kernel.org, Dave.Martin@arm.com, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2019-10-11 19:04, Marc Zyngier wrote: > On Fri, 11 Oct 2019 18:47:39 +0530 > Sai Prakash Ranjan wrote: > >> Hi Mark, >> >> Thanks a lot for the detailed explanations, I did have a look at all >> the variations before posting this. >> >> On 2019-10-11 16:20, Mark Rutland wrote: >> > Hi, >> > >> > On Fri, Oct 11, 2019 at 11:19:00AM +0530, Sai Prakash Ranjan wrote: >> >> On latest QCOM SoCs like SM8150 and SC7180 with big.LITTLE arch, below >> >> warnings are observed during bootup of big cpu cores. >> > >> > For reference, which CPUs are in those SoCs? >> > >> >> SM8150 is based on Cortex-A55(little cores) and Cortex-A76(big cores). >> I'm afraid I cannot give details about SC7180 yet. >> >> >> SM8150: >> >> >> [ 0.271177] CPU features: SANITY CHECK: Unexpected variation in >> >> SYS_ID_AA64PFR0_EL1. Boot CPU: 0x00000011112222, CPU4: >> 0x00000011111112 >> > >> > The differing fields are EL3, EL2, and EL1: the boot CPU supports >> > AArch64 and AArch32 at those exception levels, while the secondary only >> > supports AArch64. >> > >> > Do we handle this variation in KVM? >> >> We do not support KVM. > > Mainline does. You don't get to pick and choose what is supported or > not. > Ok thats good. Thanks, Sai -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel