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: 13700290 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8B16518F2C3 for ; Mon, 17 Jun 2024 07:51:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718610710; cv=none; b=j2xGoUjoTjt87oAG2GkCKHdyaPg1ohxouI3ogMQAnTrqf5fTVthL2p8jugYJ/UbJnY/b0oX3ubAotdd0K/4fnnev0AdLEwr4W1nFZfgMLcNGrU9zAePe+Y40BadZW+1oUZjxn7bpRBX/IkD8ZqapWf5WD7dvVctDjrDQt5vh69s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718610710; c=relaxed/simple; bh=mproEs7n+ddFpkKXDlP2Smw07PE40yTNGmUf0E6+5Zs=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=k9B8tzx9rO0PQnMe+eMA6cBxH+3PmdyJtlAlMoHg23VR51EsUGsskSb5fpyaHgKgQSQU6rDq+3QpGnV+KEg+efx34PYywxA1O4VOD/IUnrbVrEWEY3jdwxqJS5J2xW5fLl/kD4F3IOKwJfYqIlkmGQlvQ8dAksej8VHOvnIjUV4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=gvcpbp1L; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gvcpbp1L" 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> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 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(-)