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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 296A9C04AA7 for ; Mon, 13 May 2019 14:39:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDBD62133F for ; Mon, 13 May 2019 14:39:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="VC6jjd4Q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730339AbfEMOjr (ORCPT ); Mon, 13 May 2019 10:39:47 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:59426 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730253AbfEMOjo (ORCPT ); Mon, 13 May 2019 10:39:44 -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 x4DEd84M195057; Mon, 13 May 2019 14:39:11 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=4cIDR6PZl2rutLAEYSA22jeItW1PJPdhgsRn6XGFWEA=; b=VC6jjd4Q/95/JOy5PgCZ8AdKsMFlE4fQCQOC2dyJBtX/9iwCN4mgh4f7m5XZlJT41CUT CWiyU1PZYsAhyoP4PcbGhS++vcss56Xjgewi7dXzHWILBy4ssid7xPlSLghegxyz3MzM lRsyU6oTrYGTNnLa5CF5DZEESUPecwfArax8wnk/8fA+g1/lxpeUfKmiNGTDKimHFL0k BUWpMG9d2DNNstgdU8bqlCEnHiwjnEh1BuYVAwNxdf4+s9KmtLq6O/FzAGHQaEbNfMUf 6YUvBPOPUK+XTc5r2FauxEIQJUNK5TtoYUDMw6GnP5h/kShdnJWw0oXvReVp36peQCHR rw== Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp2120.oracle.com with ESMTP id 2sdq1q7avk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 13 May 2019 14:39:11 +0000 Received: from achartre-desktop.fr.oracle.com (dhcp-10-166-106-34.fr.oracle.com [10.166.106.34]) by aserv0022.oracle.com (8.14.4/8.14.4) with ESMTP id x4DEcZQD022780; Mon, 13 May 2019 14:39:08 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, alexandre.chartre@oracle.com Subject: [RFC KVM 10/27] kvm/isolation: add KVM page table entry free functions Date: Mon, 13 May 2019 16:38:18 +0200 Message-Id: <1557758315-12667-11-git-send-email-alexandre.chartre@oracle.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1557758315-12667-1-git-send-email-alexandre.chartre@oracle.com> References: <1557758315-12667-1-git-send-email-alexandre.chartre@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9255 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905130103 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org These functions are wrappers around the p4d/pud/pmd/pte free function which can be used with any pointer in the directory. Signed-off-by: Alexandre Chartre --- arch/x86/kvm/isolation.c | 26 ++++++++++++++++++++++++++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/isolation.c b/arch/x86/kvm/isolation.c index 1efdab1..61df750 100644 --- a/arch/x86/kvm/isolation.c +++ b/arch/x86/kvm/isolation.c @@ -161,6 +161,32 @@ static bool kvm_valid_pgt_entry(void *ptr) } +/* + * kvm_pXX_free() functions are equivalent to kernel pXX_free() + * functions but they can be used with any PXX pointer in the + * directory. + */ + +static inline void kvm_pte_free(struct mm_struct *mm, pte_t *pte) +{ + pte_free_kernel(mm, PGTD_ALIGN(pte)); +} + +static inline void kvm_pmd_free(struct mm_struct *mm, pmd_t *pmd) +{ + pmd_free(mm, PGTD_ALIGN(pmd)); +} + +static inline void kvm_pud_free(struct mm_struct *mm, pud_t *pud) +{ + pud_free(mm, PGTD_ALIGN(pud)); +} + +static inline void kvm_p4d_free(struct mm_struct *mm, p4d_t *p4d) +{ + p4d_free(mm, PGTD_ALIGN(p4d)); +} + static int kvm_isolation_init_mm(void) { -- 1.7.1