From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 7457C214A98 for ; Thu, 27 Mar 2025 14:39:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743086400; cv=none; b=nspVNDuZQlCiZqHFlk0hIBJNQuxDmvmw+MhwEb0wFCPs5iJG/7rgcJF7ofSB8iy/kASmnquUMZGnPC9a//Ean2j3flCEnmRLhmftlXYo98W7sDl+gUgmO6oUllFPiHODXLhQHIiHPKtgU/RJhb1fmICCYyUq9Vi7ghTdCJtARMs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743086400; c=relaxed/simple; bh=2SqdpWmZfX685bZn437bR9W+JCOMJU3T9OCtSVb8H50=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=socF0uQ9KpyQTk9LLK5JElohXbXMgDzux7dLTYEPb7dCXWfWdHepUouSAuo9EEf2QcrcjDLfFqfnesDQqQm1Zm7xl0V8tVnRwI/zosJyxMP1i2SPmhSc1nJye4xkcFYfOr6IIPBNyWqUFfCxK2/oeRq1aom92N7lNDEMnsJcg/4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=jU3EF8Hz; arc=none smtp.client-ip=148.163.156.1 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="jU3EF8Hz" Received: from pps.filterd (m0356517.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 52RE389G008027; Thu, 27 Mar 2025 14:39:56 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=+GzsjNNJZmXJT/Lfx s/WqV7J8Xg3iLLxeidf7sB/F8w=; b=jU3EF8Hz9HyfUJOAQ4PQm45RBKXdft/Z4 2e103zQlGAcZzm1CySXiQcnqmIZpsoxyvL55BEU3ZFz7NXRiKwLPywjI+2GOEyGr EQN7n1ZjtQvgIian9ftXcXvkm6kKLIFHwRMuHvR6zEX2PXVxPaBu9St15FzRKhGa 2geq96fb6UBbKvAWut2Cnci+FI1NQjL1tXfPuwvTuQEIjUEg3eNS1NU2JkCmfaP2 P6mYN90HAoOTw3ti9WkO4UnSbo7N0R5ms8XT+ufe7FToTCSHudYbBSfZoTdU7wIu 5G4Z98/ScN7bRE4r4MPpvEDsoCY40tUEvTpK8zfX5DTckI3WIDXnA== Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 45n83p878m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Mar 2025 14:39:56 +0000 (GMT) Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 52RBPC5w020105; Thu, 27 Mar 2025 14:39:55 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 45j8hp5rf6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Mar 2025 14:39:54 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 52REdpbF32506228 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 27 Mar 2025 14:39:51 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 27EBE20043; Thu, 27 Mar 2025 14:39:51 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C207B2004E; Thu, 27 Mar 2025 14:39:50 +0000 (GMT) Received: from funtu2.fritz.box?044ibm.com (unknown [9.171.80.24]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 27 Mar 2025 14:39:50 +0000 (GMT) From: Harald Freudenberger To: dengler@linux.ibm.com, ifranzki@linux.ibm.com, fcallies@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com Cc: linux-s390@vger.kernel.org, herbert@gondor.apana.org.au Subject: [PATCH v3 16/21] s390/zcrypt: Locate ep11_domain_query_info onto the stack instead of kmalloc Date: Thu, 27 Mar 2025 15:39:36 +0100 Message-ID: <20250327143941.45507-17-freude@linux.ibm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250327143941.45507-1-freude@linux.ibm.com> References: <20250327143941.45507-1-freude@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: p0SsrZERRZtjxUgAgXyGjwmLkWC6o0AX X-Proofpoint-ORIG-GUID: p0SsrZERRZtjxUgAgXyGjwmLkWC6o0AX X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-27_01,2025-03-26_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 adultscore=0 suspectscore=0 mlxlogscore=972 impostorscore=0 priorityscore=1501 mlxscore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503270099 Locate the relative small struct ep11_domain_query_info variable onto the stack instead of kmalloc()/kfree(). Signed-off-by: Harald Freudenberger Reviewed-by: Holger Dengler --- drivers/s390/crypto/zcrypt_ep11misc.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/s390/crypto/zcrypt_ep11misc.c b/drivers/s390/crypto/zcrypt_ep11misc.c index 8f93c54c238c..fa9e52287886 100644 --- a/drivers/s390/crypto/zcrypt_ep11misc.c +++ b/drivers/s390/crypto/zcrypt_ep11misc.c @@ -703,36 +703,31 @@ int ep11_get_domain_info(u16 card, u16 domain, struct ep11_domain_info *info) u8 new_WK_VP[32]; u32 dom_flags; u64 op_mode; - } __packed * p_dom_info; - - p_dom_info = kmalloc(sizeof(*p_dom_info), GFP_KERNEL); - if (!p_dom_info) - return -ENOMEM; + } __packed dom_query_info; rc = ep11_query_info(card, domain, 0x03 /* domain info query */, - sizeof(*p_dom_info), (u8 *)p_dom_info); + sizeof(dom_query_info), (u8 *)&dom_query_info); if (rc) goto out; memset(info, 0, sizeof(*info)); info->cur_wk_state = '0'; info->new_wk_state = '0'; - if (p_dom_info->dom_flags & 0x10 /* left imprint mode */) { - if (p_dom_info->dom_flags & 0x02 /* cur wk valid */) { + if (dom_query_info.dom_flags & 0x10 /* left imprint mode */) { + if (dom_query_info.dom_flags & 0x02 /* cur wk valid */) { info->cur_wk_state = '1'; - memcpy(info->cur_wkvp, p_dom_info->cur_WK_VP, 32); + memcpy(info->cur_wkvp, dom_query_info.cur_WK_VP, 32); } - if (p_dom_info->dom_flags & 0x04 || /* new wk present */ - p_dom_info->dom_flags & 0x08 /* new wk committed */) { + if (dom_query_info.dom_flags & 0x04 || /* new wk present */ + dom_query_info.dom_flags & 0x08 /* new wk committed */) { info->new_wk_state = - p_dom_info->dom_flags & 0x08 ? '2' : '1'; - memcpy(info->new_wkvp, p_dom_info->new_WK_VP, 32); + dom_query_info.dom_flags & 0x08 ? '2' : '1'; + memcpy(info->new_wkvp, dom_query_info.new_WK_VP, 32); } } - info->op_mode = p_dom_info->op_mode; + info->op_mode = dom_query_info.op_mode; out: - kfree(p_dom_info); return rc; } EXPORT_SYMBOL(ep11_get_domain_info); -- 2.43.0