From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97E8CEB64DB for ; Thu, 15 Jun 2023 10:06:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343677AbjFOKGH (ORCPT ); Thu, 15 Jun 2023 06:06:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245695AbjFOKFn (ORCPT ); Thu, 15 Jun 2023 06:05:43 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F06EE2710; Thu, 15 Jun 2023 03:05:41 -0700 (PDT) Received: from pps.filterd (m0356517.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35FA1wje011941; Thu, 15 Jun 2023 10:05:41 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=l0gNCvcHHKaMYWZlZcy1RcpmfSTi8pM0zYaeFWYMMpM=; b=o/HZzUGsrGoojKvB9vjdnwVvbPSDU+QSQxZe2sGDIYcgfE4FWdwgW+cbe40nuxq+MhS/ 25JUZIZMjlQRsV2a6R0+1DCKgwM0o5VQXwWqTLX+FFa3eAVdhV/ZPOM/EnEVkbeVuNa2 v2/1EuXXCk0PNOgxDMxhDUirPHWxqOEEtUVGBJ8cDT6h+8Gmq66nhoSOz+XIFXZbzZxQ hxth2NYfw8HRl9NqjNmUTUUvsqgCIzVQgjLE3JVQ6dlNMR18BsbrzbamKcgDyc9PSIzN O+cFfUmBAa5H/eMAT67YqaUO/6VBcvWUIwcpTT2OE5ZcNUw1hc3sWiNLIemIi4mHWATS 8g== Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3r80hkg54u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 15 Jun 2023 10:05:41 +0000 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 35F8TaPB007279; Thu, 15 Jun 2023 10:05:38 GMT Received: from smtprelay04.fra02v.mail.ibm.com ([9.218.2.228]) by ppma05fra.de.ibm.com (PPS) with ESMTPS id 3r4gt4tk1w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 15 Jun 2023 10:05:38 +0000 Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay04.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 35FA5ZrO43582084 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 15 Jun 2023 10:05:35 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EE81520070; Thu, 15 Jun 2023 10:05:34 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C00002006F; Thu, 15 Jun 2023 10:05:34 +0000 (GMT) Received: from a46lp73.lnxne.boe (unknown [9.152.108.100]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 15 Jun 2023 10:05:34 +0000 (GMT) From: Steffen Eiden To: kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Janosch Frank , Claudio Imbrenda , Christian Borntraeger Subject: [PATCH v5 6/7] s390/uv: replace scnprintf with sysfs_emit Date: Thu, 15 Jun 2023 12:05:32 +0200 Message-Id: <20230615100533.3996107-7-seiden@linux.ibm.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230615100533.3996107-1-seiden@linux.ibm.com> References: <20230615100533.3996107-1-seiden@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: WxUHgs01bK8NTUzr5wkmks7F1LUPFhCl X-Proofpoint-ORIG-GUID: WxUHgs01bK8NTUzr5wkmks7F1LUPFhCl X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-15_06,2023-06-14_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 adultscore=0 impostorscore=0 phishscore=0 malwarescore=0 spamscore=0 mlxscore=0 priorityscore=1501 bulkscore=0 mlxlogscore=999 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306150086 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Replace scnprintf(page, PAGE_SIZE, ...) with the page size aware sysfs_emit(buf, ...) which adds some sanity checks. Signed-off-by: Steffen Eiden Reviewed-by: Janosch Frank --- arch/s390/kernel/uv.c | 58 +++++++++++++++++++------------------------ 1 file changed, 26 insertions(+), 32 deletions(-) diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c index 5da3879001bb..b8721b67a50d 100644 --- a/arch/s390/kernel/uv.c +++ b/arch/s390/kernel/uv.c @@ -469,13 +469,13 @@ EXPORT_SYMBOL_GPL(arch_make_page_accessible); #if defined(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) || IS_ENABLED(CONFIG_KVM) static ssize_t uv_query_facilities(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%lx\n%lx\n%lx\n%lx\n", - uv_info.inst_calls_list[0], - uv_info.inst_calls_list[1], - uv_info.inst_calls_list[2], - uv_info.inst_calls_list[3]); + return sysfs_emit(buf, "%lx\n%lx\n%lx\n%lx\n", + uv_info.inst_calls_list[0], + uv_info.inst_calls_list[1], + uv_info.inst_calls_list[2], + uv_info.inst_calls_list[3]); } static struct kobj_attribute uv_query_facilities_attr = @@ -500,30 +500,27 @@ 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_dump_cpu_len(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%lx\n", - uv_info.guest_cpu_stor_len); + return sysfs_emit(buf, "%lx\n", uv_info.guest_cpu_stor_len); } static struct kobj_attribute uv_query_dump_cpu_len_attr = __ATTR(uv_query_dump_cpu_len, 0444, uv_query_dump_cpu_len, NULL); static ssize_t uv_query_dump_storage_state_len(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%lx\n", - uv_info.conf_dump_storage_state_len); + return sysfs_emit(buf, "%lx\n", uv_info.conf_dump_storage_state_len); } static struct kobj_attribute uv_query_dump_storage_state_len_attr = __ATTR(dump_storage_state_len, 0444, uv_query_dump_storage_state_len, NULL); static ssize_t uv_query_dump_finalize_len(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%lx\n", - uv_info.conf_dump_finalize_len); + return sysfs_emit(buf, "%lx\n", uv_info.conf_dump_finalize_len); } static struct kobj_attribute uv_query_dump_finalize_len_attr = @@ -539,48 +536,45 @@ static struct kobj_attribute uv_query_feature_indications_attr = __ATTR(feature_indications, 0444, uv_query_feature_indications, NULL); static ssize_t uv_query_max_guest_cpus(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%d\n", - uv_info.max_guest_cpu_id + 1); + return sysfs_emit(buf, "%d\n", uv_info.max_guest_cpu_id + 1); } static struct kobj_attribute uv_query_max_guest_cpus_attr = __ATTR(max_cpus, 0444, uv_query_max_guest_cpus, NULL); static ssize_t uv_query_max_guest_vms(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%d\n", - uv_info.max_num_sec_conf); + return sysfs_emit(buf, "%d\n", uv_info.max_num_sec_conf); } static struct kobj_attribute uv_query_max_guest_vms_attr = __ATTR(max_guests, 0444, uv_query_max_guest_vms, NULL); static ssize_t uv_query_max_guest_addr(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%lx\n", - uv_info.max_sec_stor_addr); + return sysfs_emit(buf, "%lx\n", uv_info.max_sec_stor_addr); } static struct kobj_attribute uv_query_max_guest_addr_attr = __ATTR(max_address, 0444, uv_query_max_guest_addr, NULL); static ssize_t uv_query_supp_att_req_hdr_ver(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%lx\n", uv_info.supp_att_req_hdr_ver); + return sysfs_emit(buf, "%lx\n", uv_info.supp_att_req_hdr_ver); } static struct kobj_attribute uv_query_supp_att_req_hdr_ver_attr = __ATTR(supp_att_req_hdr_ver, 0444, uv_query_supp_att_req_hdr_ver, NULL); static ssize_t uv_query_supp_att_pflags(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { - return scnprintf(page, PAGE_SIZE, "%lx\n", uv_info.supp_att_pflags); + return sysfs_emit(buf, "%lx\n", uv_info.supp_att_pflags); } static struct kobj_attribute uv_query_supp_att_pflags_attr = @@ -607,18 +601,18 @@ static struct attribute_group uv_query_attr_group = { }; static ssize_t uv_is_prot_virt_guest(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { int val = 0; #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST val = prot_virt_guest; #endif - return scnprintf(page, PAGE_SIZE, "%d\n", val); + return sysfs_emit(buf, "%d\n", val); } static ssize_t uv_is_prot_virt_host(struct kobject *kobj, - struct kobj_attribute *attr, char *page) + struct kobj_attribute *attr, char *buf) { int val = 0; @@ -626,7 +620,7 @@ static ssize_t uv_is_prot_virt_host(struct kobject *kobj, val = prot_virt_host; #endif - return scnprintf(page, PAGE_SIZE, "%d\n", val); + return sysfs_emit(buf, "%d\n", val); } static struct kobj_attribute uv_prot_virt_guest = -- 2.40.1