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Mon, 16 Oct 2023 11:17:54 +0000 Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 39G9MUvh027313; Mon, 16 Oct 2023 11:17:53 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3trg529h23-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 16 Oct 2023 11:17:53 +0000 Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 39GBHqS8040637; Mon, 16 Oct 2023 11:17:52 GMT Received: from mlluis-mac.uk.oracle.com (dhcp-10-175-197-167.vpn.oracle.com [10.175.197.167]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3trg529gvb-1; Mon, 16 Oct 2023 11:17:52 +0000 From: Miguel Luis To: Catalin Marinas , Will Deacon , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , Jing Zhang , Eric Auger , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev Cc: miguel.luis@oracle.com Subject: [PATCH v4 0/3] arm64/kvm: Fine grain _EL2 system registers list that affect nested virtualization Date: Mon, 16 Oct 2023 11:17:39 +0000 Message-Id: <20231016111743.30331-1-miguel.luis@oracle.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-16_04,2023-10-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 mlxscore=0 phishscore=0 malwarescore=0 suspectscore=0 mlxlogscore=898 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310160099 X-Proofpoint-GUID: 5lxFsOScxNx3QQFg_J_v-MIGfog1Ov3H X-Proofpoint-ORIG-GUID: 5lxFsOScxNx3QQFg_J_v-MIGfog1Ov3H X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Mon, 16 Oct 2023 04:18:40 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1779910700724046255 X-GMAIL-MSGID: 1779910700724046255 The current HCR_EL2 description defines ranges of system register encodings in which accesses should trap for NV. These ranges include encodings which aren't defined in the reference manual. In order avoid this, let's rather implement a more fine grained approach excluding those undefined. v3 -> v4 patch 2: Add BRBCR_EL2. patch 3: Handle BRBCR_EL2. Add Eric's R-b. Thanks! v3: https://lore.kernel.org/kvmarm/20231011180103.91774-1-miguel.luis@oracle.com/ v2: https://lore.kernel.org/kvmarm/20230925162057.27548-1-miguel.luis@oracle.com/ v1: https://lore.kernel.org/kvmarm/20230913185209.32282-1-miguel.luis@oracle.com/ Miguel Luis (3): arm64: Add missing _EL12 encodings arm64: Add missing _EL2 encodings arm64/kvm: Fine grain _EL2 system registers list that affect nested virtualization arch/arm64/include/asm/sysreg.h | 50 ++++++++++++++++++ arch/arm64/kvm/emulate-nested.c | 89 ++++++++++++++++++++++++++++++--- 2 files changed, 133 insertions(+), 6 deletions(-) --- 2.39.2