From patchwork Fri Aug 9 16:00:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Adalbert_Laz=C4=83r?= X-Patchwork-Id: 11087089 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 8E311112C for ; Fri, 9 Aug 2019 16:16:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7DA0A1FE82 for ; Fri, 9 Aug 2019 16:16:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 72367201CB; Fri, 9 Aug 2019 16:16:06 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 2CA3D1FE82 for ; Fri, 9 Aug 2019 16:16:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437094AbfHIQQF (ORCPT ); Fri, 9 Aug 2019 12:16:05 -0400 Received: from mx01.bbu.dsd.mx.bitdefender.com ([91.199.104.161]:52912 "EHLO mx01.bbu.dsd.mx.bitdefender.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2437105AbfHIQPF (ORCPT ); Fri, 9 Aug 2019 12:15:05 -0400 Received: from smtp.bitdefender.com (smtp02.buh.bitdefender.net [10.17.80.76]) by mx01.bbu.dsd.mx.bitdefender.com (Postfix) with ESMTPS id 9AD6B305D358; Fri, 9 Aug 2019 19:01:33 +0300 (EEST) Received: from localhost.localdomain (unknown [89.136.169.210]) by smtp.bitdefender.com (Postfix) with ESMTPSA id 5FCC4305B7A1; Fri, 9 Aug 2019 19:01:32 +0300 (EEST) From: =?utf-8?q?Adalbert_Laz=C4=83r?= To: kvm@vger.kernel.org Cc: linux-mm@kvack.org, virtualization@lists.linux-foundation.org, Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= , Konrad Rzeszutek Wilk , Tamas K Lengyel , Mathieu Tarral , =?utf-8?q?Samuel_Laur=C3=A9?= =?utf-8?q?n?= , Patrick Colp , Jan Kiszka , Stefan Hajnoczi , Weijiang Yang , Zhang@vger.kernel.org, Yu C , =?utf-8?q?Mihai_Don=C8=9Bu?= , =?utf-8?q?Adalbert_L?= =?utf-8?q?az=C4=83r?= Subject: [RFC PATCH v6 70/92] kvm: x86: filter out access rights only when tracked by the introspection tool Date: Fri, 9 Aug 2019 19:00:25 +0300 Message-Id: <20190809160047.8319-71-alazar@bitdefender.com> In-Reply-To: <20190809160047.8319-1-alazar@bitdefender.com> References: <20190809160047.8319-1-alazar@bitdefender.com> MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP It should complete the commit fd34a9518173 ("kvm: x86: consult the page tracking from kvm_mmu_get_page() and __direct_map()") Signed-off-by: Adalbert Lazăr --- arch/x86/kvm/mmu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 65b6acba82da..fd64cf1115da 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2660,6 +2660,9 @@ static void clear_sp_write_flooding_count(u64 *spte) static unsigned int kvm_mmu_page_track_acc(struct kvm_vcpu *vcpu, gfn_t gfn, unsigned int acc) { + if (!kvmi_tracked_gfn(vcpu, gfn)) + return acc; + if (kvm_page_track_is_active(vcpu, gfn, KVM_PAGE_TRACK_PREREAD)) acc &= ~ACC_USER_MASK; if (kvm_page_track_is_active(vcpu, gfn, KVM_PAGE_TRACK_PREWRITE) ||