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 207E1C4345F for ; Wed, 1 May 2024 08:17:55 +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:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QcKuf/WDTvQFvfO22UEUe/jTEHQLTQCwz6a2IefyDX8=; b=hQqVThbqGw1hqs ww+WLpp6amnPDRuVBirOv3DOuovlgMc/Q2weBkw3S/wAqcfoLgDyiMipXfCOdiqghV07uWPEHV+6j kNiph05bKQLCvr37P8UBWctBC/ShYMY1a2EQ0dyMzTokIt4/0Uy0fVl3cgLZLvAcWiMZzI5Qad7jl rHS1bRmMjpVuV7tSFKSDCO1TRr+Z3Tb1FFzegsPL0FoxaPs47j3WMJo0J+aejj7NnwUJR8jy+Y8yY 2C5TNtdwwYPeluc0lCky1JAdS53ELFl00ZcBHVyoIkCmMTgAeou5nit44VY0N1OgZLkqyI0yAdhTJ EQaH1iTloZr53I97m+og==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s259q-00000008q4i-0c4K; Wed, 01 May 2024 08:17:42 +0000 Received: from out-175.mta0.migadu.com ([2001:41d0:1004:224b::af]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s259k-00000008q39-16VT for linux-arm-kernel@lists.infradead.org; Wed, 01 May 2024 08:17:40 +0000 Date: Wed, 1 May 2024 08:17:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1714551453; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=akW+2UMs2xoloXlr720i0CCqdD/KMrFp+0W48l7CE/E=; b=MIwH6gqcLnuS2znrPZs4k8FP7bQYUTCRBRlB3CubDp2sfoKsbpAowrVD2I8jIe32QOQxD4 vsNGZtvghVrvnorcdQEGF0cO/8rRalhFMj0yjWAOZ5JMjivARWW/3Go/9xCZY2xn3zxZI8 aKXxqiEY+SrUnVP3LLvW9oJ/LBSxfCM= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Oliver Upton To: Sebastian Ott Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, Marc Zyngier , James Morse , Suzuki K Poulose , Catalin Marinas , Will Deacon Subject: Re: [PATCH v2 0/6] KVM: arm64: emulation for CTR_EL0 Message-ID: References: <20240426104950.7382-1-sebott@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240426104950.7382-1-sebott@redhat.com> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240501_011736_458551_1D861A59 X-CRM114-Status: GOOD ( 11.60 ) 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 Hi Sebastian, On Fri, Apr 26, 2024 at 12:49:44PM +0200, Sebastian Ott wrote: > Hej folks, > > I'm looking into supporting migration between 2 Ampere Altra (Max) > machines (using Neoverse-N1). They are almost identical regarding > their feature id register state except for CTR_EL0.DIC which is set > on one machine but not the other. > > CTR_EL0 is currently marked as invariant and migrating a VM between > those 2 machines using qemu fails. I left some feedback on the series, but in addition to that would it be possible to augment the set_id_regs selftest to exercise the CTR_EL0 mutability? -- Thanks, Oliver _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel