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Fri, 1 Jul 2022 10:02:12 +0000 (GMT) Received: from a46lp73.lnxne.boe (unknown [9.152.108.100]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 1 Jul 2022 10:02:12 +0000 (GMT) From: Steffen Eiden To: Heiko Carstens , Alexander Gordeev , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Vasily Gorbik , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: nrb@linux.ibm.com Subject: [PATCH 1/2] s390/hwcaps: Add HWCAP_UV Date: Fri, 1 Jul 2022 12:02:09 +0200 Message-Id: <20220701100210.5482-2-seiden@linux.ibm.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220701100210.5482-1-seiden@linux.ibm.com> References: <20220701100210.5482-1-seiden@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: fmjAmGq8XuR83ncT_rG7F7RUoS35Nhoq X-Proofpoint-GUID: fmjAmGq8XuR83ncT_rG7F7RUoS35Nhoq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-01_06,2022-06-28_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 mlxlogscore=962 mlxscore=0 clxscore=1015 priorityscore=1501 phishscore=0 suspectscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2207010037 ARC-Message-Signature: i=1; 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dkim=pass header.d=ibm.com header.s=pp1 header.b=iRIo6+tj; dmarc=pass (policy=none) header.from=ibm.com; spf=pass (imf08.hostedemail.com: domain of seiden@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=seiden@linux.ibm.com X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 7340A16003A X-HE-Tag: 1656669740-40087 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This patch adds a hardware capability for the Ultravisor. This capability will be present if facility 158 is enabled. Signed-off-by: Steffen Eiden --- arch/s390/include/asm/elf.h | 2 ++ arch/s390/kernel/processor.c | 5 +++++ 2 files changed, 7 insertions(+) diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index 70a30ae258b7..3a5e89ce4fd0 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -115,6 +115,7 @@ enum { HWCAP_NR_NNPA = 20, HWCAP_NR_PCI_MIO = 21, HWCAP_NR_SIE = 22, + HWCAP_NR_UV = 23, HWCAP_NR_MAX }; @@ -142,6 +143,7 @@ enum { #define HWCAP_NNPA BIT(HWCAP_NR_NNPA) #define HWCAP_PCI_MIO BIT(HWCAP_NR_PCI_MIO) #define HWCAP_SIE BIT(HWCAP_NR_SIE) +#define HWCAP_UV BIT(HWCAP_NR_UV) /* * These are used to set parameters in the core dumps. diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index aa0e0e7fc773..80ccd57a2b00 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -141,6 +141,7 @@ static void show_cpu_summary(struct seq_file *m, void *v) [HWCAP_NR_NNPA] = "nnpa", [HWCAP_NR_PCI_MIO] = "pcimio", [HWCAP_NR_SIE] = "sie", + [HWCAP_NR_UV] = "uv", }; int i, cpu; @@ -249,6 +250,10 @@ static int __init setup_hwcaps(void) if (sclp.has_sief2) elf_hwcap |= HWCAP_SIE; + /* ultravisor-call (secure execution) */ + if (test_facility(158)) + elf_hwcap |= HWCAP_UV; + return 0; } arch_initcall(setup_hwcaps); -- 2.35.3