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 BE642CCF9E9 for ; Thu, 26 Sep 2024 07:41:50 +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=t68Dgt6yWbqsMukshTyhqyh1jY4+yGJXlpezi6ogjkA=; b=vRAKeKFzPMt6ztfEcdkjxBQZtY JFSOGDXsPd9wzRKC6no1twoY7ZuAshf8SiaPT44nAk7mrpNZKCfzkmqyJQwBr7flWgC+nIG6uunme wyY+INejyAsRjhLLGKEbTJCjBw9t3MOVsLUabrTGT99YJoiJEdfg7UnmmSnueTvmXwMrVpRqJwKWM aIBIXIRo9Qh6QWZKnrMeCG5utuhMiINHd74gKte99tMCD3LI0IcXfBUSdmJ7r3GM3OFxqj+BbAYUV lZOAmEdoOek/+BCD4eg6JvfoWloX1eHqItymIhPXpC3egeeLihpePMOBBxE8jRn7WAXgo0e9zWWFT dtFCCU2A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1stj89-00000007Xtx-2xcI; Thu, 26 Sep 2024 07:41:41 +0000 Received: from out-184.mta0.migadu.com ([91.218.175.184]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1stisf-00000007VA2-1Usi for linux-arm-kernel@lists.infradead.org; Thu, 26 Sep 2024 07:25:43 +0000 Date: Thu, 26 Sep 2024 09:25:24 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1727335538; 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=t68Dgt6yWbqsMukshTyhqyh1jY4+yGJXlpezi6ogjkA=; b=K/mwP0jEZ9zsREYyIkWCF/42FhlrEamH5wF/IFzcqHKsIW6MJBvoRP1V/k3VcPfu1BkbM0 K76Z+dAiueYbH4gfnlB1BthHvEPE9kAY9shbmhT/pgCObYpbXzOA3pYgNidL+fAEuOPv8h Y6x6Zt2+CImb7+xufZgCmHxz9WNfmk8= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Oliver Upton To: Shaoqin Huang Cc: Marc Zyngier , kvmarm@lists.linux.dev, Eric Auger , Sebastian Ott , Cornelia Huck , James Morse , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon , Paolo Bonzini , Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [RFC PATCH v1 2/2] KVM: arm64: Allow the RAS feature bit in ID_AA64PFR0_EL1 writable from userspace Message-ID: References: <20240926032244.3666579-1-shahuang@redhat.com> <20240926032244.3666579-3-shahuang@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240926032244.3666579-3-shahuang@redhat.com> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240926_002541_586133_FEDEED82 X-CRM114-Status: UNSURE ( 8.42 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Sep 25, 2024 at 11:22:40PM -0400, Shaoqin Huang wrote: > Currently FEAT_RAS is not writable, this makes migration fail between > systems where this feature differ. Allow the FEAT_RAS writable in > ID_AA64PFR0_EL1 to let the migration possible when the RAS is differ > between two machines. > > Also update the kselftest to test the RAS field. Please do kernel + selftests changes in separate patches. -- Thanks, Oliver