From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-6.0 required=5.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id 594567D8AB for ; Sun, 6 Jan 2019 19:26:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726502AbfAFTZx (ORCPT ); Sun, 6 Jan 2019 14:25:53 -0500 Received: from mail-ed1-f66.google.com ([209.85.208.66]:44813 "EHLO mail-ed1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726477AbfAFTZk (ORCPT ); Sun, 6 Jan 2019 14:25:40 -0500 Received: by mail-ed1-f66.google.com with SMTP id y56so35986613edd.11 for ; Sun, 06 Jan 2019 11:25:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mena-vt-edu.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ibxTSM7aAfMxp0mh34e5XoCF9bu27Z34+6gCZTrPT34=; b=HoV8NuMvRHRIahTLZDBI7mFj8a25nP7usZ14wlIEpO5VDxbpItPPfakKDHJd0tpXjr A0xgBMAWYLPvKkIjy7HPMLg+FPHv9SXcaymFZ+PeFBicagcBq0K7E9iU/3AMRwEwfBXA tEXG5wGu0eqGdkSsdkRFDRRvb5FaSQRQ0+6B0EFmJ3pMLM3yuualpb+DnrRGqAfwcAfb LDjWeRjsPkH2ukGWunr91Bx9l1twcY8wlzi9qYk2gR4BwVppDrJniJQSqXTwHmDDJK3G tRpdXeiZ/aLzNIcawK7iBf8+lNGE08fdD7eeUlBG8+EtRtgGyZkLtcx6EV6qwcNMiZrF 5++g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ibxTSM7aAfMxp0mh34e5XoCF9bu27Z34+6gCZTrPT34=; b=H1CJxAapbkou9W9VQJ0jpDRPa3t2WQ2TjVfNI12iqDrbv46ToKjLwK0PSjEg5itLBD slOowr6PyN03F429thdEYCPIV134PlGzGQhJbEdi44rW/y4YDvgx28+xj5sOjYv8Hp0B XpY0NkMHCONqVfHmIEW9yWd6twAT/U70MqB1+kFVJq392vytqiZoSN4dhFOl2HOV8gg6 4UhvHa+PvJEBiEtlY4/txP+TP4NFtV+02tjVtqjo5ulPyZU0wtmkFjwtKyin3r4fS9aX 8u7kmB+4V314+cFDuJ3BMRbN5p3VUg8G+BeYHGAF3FsS59Dgj0YgiN0EFe/k5QNAcpy3 8IQw== X-Gm-Message-State: AA+aEWboerxZQCPTD7CkwlBUKPcAFOHYc0g7+SgCEXUI9IT3nh6YxA/J Mo14iWQh1ECShndAhV8ZryJQKQ== X-Google-Smtp-Source: AFSGD/WAe91TAKjmYeWuStwWgG2ypoS1UZa6t5xjlxl6mGSeeQxsX7WS7F/s7MqHKXGG8Rq9N9yz4w== X-Received: by 2002:a17:906:228d:: with SMTP id p13-v6mr44874418eja.159.1546802738138; Sun, 06 Jan 2019 11:25:38 -0800 (PST) Received: from localhost.localdomain ([156.212.65.252]) by smtp.gmail.com with ESMTPSA id b46sm29994035edd.94.2019.01.06.11.25.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 06 Jan 2019 11:25:37 -0800 (PST) From: Ahmed Abd El Mawgood To: Paolo Bonzini , rkrcmar@redhat.com, Jonathan Corbet , Thomas Gleixner , Ingo Molnar , Borislav Petkov , hpa@zytor.com, x86@kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, ahmedsoliman0x666@gmail.com, ovich00@gmail.com, kernel-hardening@lists.openwall.com, nigel.edwards@hpe.com, Boris Lukashev , Igor Stoppa Cc: Ahmed Abd El Mawgood Subject: [PATCH V8 08/11] KVM: X86: Port ROE_MPROTECT_CHUNK to x86 Date: Sun, 6 Jan 2019 21:23:42 +0200 Message-Id: <20190106192345.13578-9-ahmedsoliman@mena.vt.edu> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190106192345.13578-1-ahmedsoliman@mena.vt.edu> References: <20190106192345.13578-1-ahmedsoliman@mena.vt.edu> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org Apply d->memslot->partial_roe_bitmap to shadow page table entries too. Signed-off-by: Ahmed Abd El Mawgood --- arch/x86/kvm/roe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/roe.c b/arch/x86/kvm/roe.c index f787106be8..700f69823b 100644 --- a/arch/x86/kvm/roe.c +++ b/arch/x86/kvm/roe.c @@ -25,11 +25,14 @@ static bool __rmap_write_protect_roe(struct kvm *kvm, struct rmap_iterator iter; bool prot; bool flush = false; + void *full_bmp = memslot->roe_bitmap; + void *part_bmp = memslot->partial_roe_bitmap; for_each_rmap_spte(rmap_head, &iter, sptep) { int idx = spte_to_gfn(sptep) - memslot->base_gfn; - prot = !test_bit(idx, memslot->roe_bitmap) && pt_protect; + prot = !(test_bit(idx, full_bmp) || test_bit(idx, part_bmp)); + prot = prot && pt_protect; flush |= spte_write_protect(sptep, prot); } return flush; -- 2.19.2