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[23.128.96.18]) by mx.google.com with ESMTP id dn6si7420437edb.514.2020.05.04.11.43.39; Mon, 04 May 2020 11:44:03 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2020-01-29 header.b=WJAcFefZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729327AbgEDPAl (ORCPT + 99 others); Mon, 4 May 2020 11:00:41 -0400 Received: from aserp2120.oracle.com ([141.146.126.78]:46826 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729305AbgEDPAi (ORCPT ); Mon, 4 May 2020 11:00:38 -0400 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 044EnCoh024792; Mon, 4 May 2020 15:00:03 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2020-01-29; bh=hsMzy6wx1/DEdi8suQdgbXWe0Maq85/ZgmlxYBdz/2E=; b=WJAcFefZyCtjaUHMoZAZ8J2amgJ79c/i5nPycj0M7U47/tKdAIox7kCo9sAXBqN8v0pf Qdw7QAmJgjSU+Ooe6Yl9dhCs/R1IlNJ1eJ4lzQhKr3misdTrE9U/oEukuT4+3SE9HVV6 75V446d6RBXXGCy4ecWMmCgyhhQfFgh7hMtuEhNo8BNCOScXeh+KGq5VJGmnQpBK5VZz 3NbYqq38tpin9A/KCUAS57wDKY7XHS19vhpt4NUyX93XweuAlRmSBn5FbTh7v5kMxLpr B9ozcwXIjpAwKxCEQSeyTR6C7b/1aqePCDlrh163eHTTAGHxCO3qvmwfXDDCkFtVZsiR Pw== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 30s0tm7dkr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 04 May 2020 15:00:03 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 044ElM7o033871; Mon, 4 May 2020 15:00:03 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3020.oracle.com with ESMTP id 30sjnaw244-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 04 May 2020 15:00:03 +0000 Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 044F01rW022337; Mon, 4 May 2020 15:00:01 GMT Received: from linux-1.home.com (/10.175.9.166) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 04 May 2020 08:00:00 -0700 From: Alexandre Chartre To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: pbonzini@redhat.com, konrad.wilk@oracle.com, jan.setjeeilers@oracle.com, liran.alon@oracle.com, junaids@google.com, graf@amazon.de, rppt@linux.vnet.ibm.com, kuzuno@gmail.com, mgross@linux.intel.com, alexandre.chartre@oracle.com Subject: [RFC v4][PATCH part-2 07/13] mm/dpt: Helper functions to map module into a decorated page-table Date: Mon, 4 May 2020 16:58:04 +0200 Message-Id: <20200504145810.11882-8-alexandre.chartre@oracle.com> X-Mailer: git-send-email 2.18.2 In-Reply-To: <20200504145810.11882-1-alexandre.chartre@oracle.com> References: <20200504145810.11882-1-alexandre.chartre@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9610 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 adultscore=0 phishscore=0 mlxlogscore=999 bulkscore=0 malwarescore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005040123 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9610 signatures=668687 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxscore=0 priorityscore=1501 lowpriorityscore=0 spamscore=0 suspectscore=0 phishscore=0 clxscore=1015 bulkscore=0 mlxlogscore=999 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005040123 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add helper functions to easily map a module into a decorated page-table. Signed-off-by: Alexandre Chartre --- arch/x86/include/asm/dpt.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/x86/include/asm/dpt.h b/arch/x86/include/asm/dpt.h index 85d2c5051acb..5a38d97a70a8 100644 --- a/arch/x86/include/asm/dpt.h +++ b/arch/x86/include/asm/dpt.h @@ -2,6 +2,7 @@ #ifndef ARCH_X86_MM_DPT_H #define ARCH_X86_MM_DPT_H +#include #include #include @@ -44,4 +45,24 @@ extern int dpt_map_range(struct dpt *dpt, void *ptr, size_t size, enum page_table_level level); extern int dpt_map(struct dpt *dpt, void *ptr, unsigned long size); +static inline int dpt_map_module(struct dpt *dpt, char *module_name) +{ + struct module *module; + + module = find_module(module_name); + if (!module) + return -ESRCH; + + return dpt_map(dpt, module->core_layout.base, module->core_layout.size); +} + +/* + * Copy the memory mapping for the current module. This is defined as a + * macro to ensure it is expanded in the module making the call so that + * THIS_MODULE has the correct value. + */ +#define DPT_MAP_THIS_MODULE(dpt) \ + (dpt_map(dpt, THIS_MODULE->core_layout.base, \ + THIS_MODULE->core_layout.size)) + #endif -- 2.18.2