From patchwork Wed Aug 30 18:32:44 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergej Proskurin X-Patchwork-Id: 9930559 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F415C6032A for ; Wed, 30 Aug 2017 18:35:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ECBBE285E3 for ; Wed, 30 Aug 2017 18:35:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E182C28780; Wed, 30 Aug 2017 18:35:28 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 484FF28717 for ; Wed, 30 Aug 2017 18:35:26 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dn7nv-0001mh-Nj; Wed, 30 Aug 2017 18:33:31 +0000 Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dn7nu-0001c0-58 for xen-devel@lists.xenproject.org; Wed, 30 Aug 2017 18:33:30 +0000 Received: from [85.158.139.211] by server-12.bemta-5.messagelabs.com id 3F/18-01777-9F407A95; Wed, 30 Aug 2017 18:33:29 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrPLMWRWlGSWpSXmKPExsXSPJ+BQ/cny/J Ig6nfRCy+b5nM5MDocfjDFZYAxijWzLyk/IoE1owVr7+xF5xhr1iyj7eBcT5bFyMnh5DARkaJ Nc0yEPYmRolpD+NAbDYBA4kpr1eygtgiAkoS91ZNZupi5OJgFmhilLjX+AComYNDWCBA4usrL pAaFgFViWn7NjGC2LwCthLnrmxjArElBOQlzj24zQxicwLFzxyYwQqxy0bi3tzzzBMYuRcwMq xiVC9OLSpLLdI11ksqykzPKMlNzMzRNTQw1ctNLS5OTE/NSUwq1kvOz93ECPQsAxDsYNz7z+k QoyQHk5Io7wrm5ZFCfEn5KZUZicUZ8UWlOanFhxhlODiUJHjZgYEiJFiUmp5akZaZAwwxmLQE B4+SCK8TSJq3uCAxtzgzHSJ1ilGXo+nDli9MQix5+XmpUuK8hiBFAiBFGaV5cCNg4X6JUVZKm JcR6CghnoLUotzMElT5V4ziHIxKwrwnQK7kycwrgdv0CugIJqAjYr2WghxRkoiQkmpgNFaNPM 4/U3j/tRN7hRIY3619MTu8UGre0/LqiWwHSlxcLJYfrLIJEJ5WJCJ0gf2nbOOZz+2Wc4U2hq9 4La2k0NH7kGvCxfOtu7nFt89fKOJy/epF25aTXy4pBJ16ocS2NqX/zPOeYC/Ljfydf3hkfkzz fbv8mWBg3md9ti6OtXPvx7sw1eTEKbEUZyQaajEXFScCAAg+wVNyAgAA X-Env-Sender: proskurin@sec.in.tum.de X-Msg-Ref: server-15.tower-206.messagelabs.com!1504118009!95594202!1 X-Originating-IP: [131.159.0.8] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 41930 invoked from network); 30 Aug 2017 18:33:29 -0000 Received: from mail-out1.informatik.tu-muenchen.de (HELO mail-out1.informatik.tu-muenchen.de) (131.159.0.8) by server-15.tower-206.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 30 Aug 2017 18:33:29 -0000 Received: from files.sec.in.tum.de (files.sec.in.tum.de [131.159.50.1]) by services.sec.in.tum.de (Postfix) with ESMTP id 0BAD610CB7DF7; Wed, 30 Aug 2017 20:33:09 +0200 (CEST) Received: from thanatos.sec.in.tum.de (thanatos.sec.in.tum.de [131.159.50.57]) by files.sec.in.tum.de (Postfix) with ESMTP id F34A7491F5; Wed, 30 Aug 2017 20:33:08 +0200 (CEST) From: Sergej Proskurin To: xen-devel@lists.xenproject.org Date: Wed, 30 Aug 2017 20:32:44 +0200 Message-Id: <20170830183258.14612-26-proskurin@sec.in.tum.de> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20170830183258.14612-1-proskurin@sec.in.tum.de> References: <20170830183258.14612-1-proskurin@sec.in.tum.de> Cc: Sergej Proskurin , Julien Grall , Stefano Stabellini Subject: [Xen-devel] [PATCH v4 25/39] arm/p2m: Modify reference count only if hostp2m active X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP This commit makes sure that the page reference count is updated through the function "p2m_put_l3_page" only when the entries have been freed from the host's p2m. Signed-off-by: Sergej Proskurin --- Cc: Stefano Stabellini Cc: Julien Grall v4: Moved the check for the host's p2m from "p2m_free_entry" to "p2m_put_l3_page". --- xen/arch/arm/p2m.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c index 246250d8c6..e9274c74a8 100644 --- a/xen/arch/arm/p2m.c +++ b/xen/arch/arm/p2m.c @@ -617,7 +617,7 @@ static void p2m_put_l3_page(struct p2m_domain *p2m, const lpae_t pte) * flush the TLBs if the page is reallocated before the end of * this loop. */ - if ( p2m_is_foreign(pte.p2m.type) ) + if ( p2m_is_foreign(pte.p2m.type) && p2m_is_hostp2m(p2m) ) { mfn_t mfn = _mfn(pte.p2m.base);