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(unknown [9.114.12.104]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 23 Feb 2022 09:20:17 +0000 (GMT) From: Janosch Frank To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, imbrenda@linux.ibm.com, david@redhat.com, borntraeger@linux.ibm.com Subject: [PATCH 1/9] s390x: Add SE hdr query information Date: Wed, 23 Feb 2022 09:19:59 +0000 Message-Id: <20220223092007.3163-2-frankja@linux.ibm.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220223092007.3163-1-frankja@linux.ibm.com> References: <20220223092007.3163-1-frankja@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: -zxHqN2ja22kASql2EuWZxUN_F5tMaYM X-Proofpoint-ORIG-GUID: B5BtycpZuwaLMts-jbN1TN_mTJPM-T1_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-02-23_03,2022-02-21_02,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 adultscore=0 mlxlogscore=999 phishscore=0 impostorscore=0 spamscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202230049 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org We have information about the supported se header version and pcf bits so let's expose it via the sysfs files. Signed-off-by: Janosch Frank --- arch/s390/boot/uv.c | 2 ++ arch/s390/include/asm/uv.h | 7 ++++++- arch/s390/kernel/uv.c | 20 ++++++++++++++++++++ 3 files changed, 28 insertions(+), 1 deletion(-) diff --git a/arch/s390/boot/uv.c b/arch/s390/boot/uv.c index e6be155ab2e5..b100b57cf15d 100644 --- a/arch/s390/boot/uv.c +++ b/arch/s390/boot/uv.c @@ -41,6 +41,8 @@ void uv_query_info(void) uv_info.max_num_sec_conf = uvcb.max_num_sec_conf; uv_info.max_guest_cpu_id = uvcb.max_guest_cpu_id; uv_info.uv_feature_indications = uvcb.uv_feature_indications; + uv_info.supp_se_hdr_ver = uvcb.supp_se_hdr_versions; + uv_info.supp_se_hdr_pcf = uvcb.supp_se_hdr_pcf; } #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h index 86218382d29c..7d6c78b61bf2 100644 --- a/arch/s390/include/asm/uv.h +++ b/arch/s390/include/asm/uv.h @@ -107,7 +107,10 @@ struct uv_cb_qui { u8 reserved88[158 - 136]; /* 0x0088 */ u16 max_guest_cpu_id; /* 0x009e */ u64 uv_feature_indications; /* 0x00a0 */ - u8 reserveda8[200 - 168]; /* 0x00a8 */ + u64 reserveda8; /* 0x00a8 */ + u64 supp_se_hdr_versions; /* 0x00b0 */ + u64 supp_se_hdr_pcf; /* 0x00b8 */ + u64 reservedc0; /* 0x00c0 */ } __packed __aligned(8); /* Initialize Ultravisor */ @@ -285,6 +288,8 @@ struct uv_info { unsigned int max_num_sec_conf; unsigned short max_guest_cpu_id; unsigned long uv_feature_indications; + unsigned long supp_se_hdr_ver; + unsigned long supp_se_hdr_pcf; }; extern struct uv_info uv_info; diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c index a5425075dd25..852840384e75 100644 --- a/arch/s390/kernel/uv.c +++ b/arch/s390/kernel/uv.c @@ -392,6 +392,24 @@ static ssize_t uv_query_facilities(struct kobject *kobj, static struct kobj_attribute uv_query_facilities_attr = __ATTR(facilities, 0444, uv_query_facilities, NULL); +static ssize_t uv_query_supp_se_hdr_ver(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sysfs_emit(buf, "%lx\n", uv_info.supp_se_hdr_ver); +} + +static struct kobj_attribute uv_query_supp_se_hdr_ver_attr = + __ATTR(supp_se_hdr_ver, 0444, uv_query_supp_se_hdr_ver, NULL); + +static ssize_t uv_query_supp_se_hdr_pcf(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + return sysfs_emit(buf, "%lx\n", uv_info.supp_se_hdr_pcf); +} + +static struct kobj_attribute uv_query_supp_se_hdr_pcf_attr = + __ATTR(supp_se_hdr_pcf, 0444, uv_query_supp_se_hdr_pcf, NULL); + static ssize_t uv_query_feature_indications(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { @@ -437,6 +455,8 @@ static struct attribute *uv_query_attrs[] = { &uv_query_max_guest_cpus_attr.attr, &uv_query_max_guest_vms_attr.attr, &uv_query_max_guest_addr_attr.attr, + &uv_query_supp_se_hdr_ver_attr.attr, + &uv_query_supp_se_hdr_pcf_attr.attr, NULL, }; -- 2.32.0