From patchwork Mon Jun 17 07:51:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shaoqin Huang X-Patchwork-Id: 13700294 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 668D0C27C6E for ; Mon, 17 Jun 2024 07:52:02 +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:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=BW4VAsHAD5rQXt1LXI/66mtVgyz0sOVi0R128fdor2M=; b=4xbHO7bqRWV42sWlzIMJA3g4kz KjRYXqBLkoqBHx/uQC7jujBmXzo//funS23k1xUe6kzYtF0iUqsskgWYbS3yfwFUWh0/NHMyHwx9g eum1IQKO9Q1m4qchmESJ25pTTQgGjDJ5r4VLWPcrF7Z3NmVXHWgWhXQ8mpYD5YA6Ju4IIBSAuhTnr 6dI6cCJfbBTqMRHQ9cYP38v848aZXb/P8MYkWrpGF16cImPl3H9c60tYrc65ShqCzFvDCz9ANAIB4 v9KYcUtAgIP5B8fcl+jJnA826UsWhsvz0KHPJWNZAw8qzypLjCK72NwDWWBMAdIMRQgycWTHmVq6V K4sXCcdQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sJ79b-00000009jvI-2ril; Mon, 17 Jun 2024 07:51:51 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sJ79Z-00000009jso-1MJr for linux-arm-kernel@lists.infradead.org; Mon, 17 Jun 2024 07:51:50 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1718610706; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=BW4VAsHAD5rQXt1LXI/66mtVgyz0sOVi0R128fdor2M=; b=gvcpbp1LUJaNLQCzE81irxggspYWBZGQ01p7IR70ovc5Pl2MEwS6y28wLlLSH2agxASml3 8yItOs94+rX8zIKrYCg7PMbmKbH/7stg8AjCLtr5vfcuqH4931GMga3ZstJ3HI+bNqX5WN DM4hPhKBCMOd3liqSiEv2Bqti613dHA= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-595-eYIEDCG1OhSnxDpFyTq0Ag-1; Mon, 17 Jun 2024 03:51:43 -0400 X-MC-Unique: eYIEDCG1OhSnxDpFyTq0Ag-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id E941019560AF; Mon, 17 Jun 2024 07:51:40 +0000 (UTC) Received: from virt-mtcollins-01.lab.eng.rdu2.redhat.com (virt-mtcollins-01.lab.eng.rdu2.redhat.com [10.8.1.196]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id A91481956087; Mon, 17 Jun 2024 07:51:36 +0000 (UTC) From: Shaoqin Huang To: Oliver Upton , Marc Zyngier , kvmarm@lists.linux.dev Cc: Shaoqin Huang , Catalin Marinas , James Morse , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Paolo Bonzini , Shuah Khan , Suzuki K Poulose , Will Deacon , Zenghui Yu Subject: [PATCH v1 0/2] KVM: arm64: Making BT Field in ID_AA64PFR1_EL1 writable Date: Mon, 17 Jun 2024 03:51:29 -0400 Message-Id: <20240617075131.1006173-1-shahuang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240617_005149_455568_AC581FE6 X-CRM114-Status: UNSURE ( 8.54 ) 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 In this patch series, we try to make more register fields writable like ID_AA64PFR1_EL1.BT since this can benifit the migration between some of the machines which have different BT values. Changelog: ---------- RFCv1 -> v1: * Fix the compilation error. * Delete the machine specific information and make the description more generable. RFCv1: https://lore.kernel.org/all/20240612023553.127813-1-shahuang@redhat.com/ Shaoqin Huang (2): KVM: arm64: Allow BT field in ID_AA64PFR1_EL1 writable KVM: selftests: aarch64: Add writable test for ID_AA64PFR1_EL1 arch/arm64/kvm/sys_regs.c | 2 +- tools/testing/selftests/kvm/aarch64/set_id_regs.c | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-)