From patchwork Thu Jul 11 14:25:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Chartre X-Patchwork-Id: 11040175 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7366414E5 for ; Thu, 11 Jul 2019 14:29:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5EBFD28ABE for ; Thu, 11 Jul 2019 14:29:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 52E6B28AC8; Thu, 11 Jul 2019 14:29:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0ABB028AD9 for ; Thu, 11 Jul 2019 14:29:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728744AbfGKO1h (ORCPT ); Thu, 11 Jul 2019 10:27:37 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:41874 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728738AbfGKO1g (ORCPT ); Thu, 11 Jul 2019 10:27:36 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x6BEOE8u013326; Thu, 11 Jul 2019 14:26:21 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-2018-07-02; bh=x/IjzSr0NJXbBWkc/GbWFGd8aRvvo+k/bAxRCg2smaA=; b=UpGsaKxVuo2eIaT3MIyMj6uwvZYdjod6xr9sIWH6GLVIiGJo5xv5khjwyLVyDDuy1GvG yfeeGSjBWTuaMV/ezPA0NULlZQYuPGQftx9frpdHWZCWGt6EzWWMYPjn5VPHT47SjUpI A1Zvxp/4R+waiK8CFltSblp1Oe52CtoJA0LD+OBZSfdqHFgWhRLUnvbf0i9N2AFU9yvt 42HuhPrb/rYgNn3SpXtQLfgcHyAjGcS15pNxoiZQoNGdL0uAmA7B00OD3j6dk0aaUwQn KjZFUxYUuNzdESj/m6+MVakQNxN1UqdtuIgCsY0XLrDA5xHgNra+3zY3ilOMR4T3aYcQ vg== Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by userp2120.oracle.com with ESMTP id 2tjm9r0bpk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 11 Jul 2019 14:26:21 +0000 Received: from achartre-desktop.fr.oracle.com (dhcp-10-166-106-34.fr.oracle.com [10.166.106.34]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x6BEPcu2021444; Thu, 11 Jul 2019 14:26:12 GMT From: Alexandre Chartre To: pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, kvm@vger.kernel.org, x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: konrad.wilk@oracle.com, jan.setjeeilers@oracle.com, liran.alon@oracle.com, jwadams@google.com, graf@amazon.de, rppt@linux.vnet.ibm.com, alexandre.chartre@oracle.com Subject: [RFC v2 09/26] mm/asi: Helper functions to map module into ASI Date: Thu, 11 Jul 2019 16:25:21 +0200 Message-Id: <1562855138-19507-10-git-send-email-alexandre.chartre@oracle.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1562855138-19507-1-git-send-email-alexandre.chartre@oracle.com> References: <1562855138-19507-1-git-send-email-alexandre.chartre@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9314 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=896 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907110162 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add helper functions to easily map a module into an ASI. Signed-off-by: Alexandre Chartre --- arch/x86/include/asm/asi.h | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/asi.h b/arch/x86/include/asm/asi.h index 19656aa..b5dbc49 100644 --- a/arch/x86/include/asm/asi.h +++ b/arch/x86/include/asm/asi.h @@ -6,6 +6,7 @@ #ifndef __ASSEMBLY__ +#include #include #include #include @@ -81,6 +82,26 @@ extern int asi_map_range(struct asi *asi, void *ptr, size_t size, extern int asi_map(struct asi *asi, void *ptr, unsigned long 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 ASI_MAP_THIS_MODULE(asi) \ + (asi_map(asi, THIS_MODULE->core_layout.base, \ + THIS_MODULE->core_layout.size)) + +static inline int asi_map_module(struct asi *asi, char *module_name) +{ + struct module *module; + + module = find_module(module_name); + if (!module) + return -ESRCH; + + return asi_map(asi, module->core_layout.base, module->core_layout.size); +} + +/* * Function to exit the current isolation. This is used to abort isolation * when a task using isolation is scheduled out. */