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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 59992C432C3 for ; Fri, 15 Nov 2019 06:23:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 25B692053B for ; Fri, 15 Nov 2019 06:23:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573798989; bh=c+L6FNSbEbluDnQBJNCYdxJd5Y4TDhx5J6OUqGg7FPQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=b01pnog+O/SHM90+7tfePVK8oCpB4pJ4uO1nKQLKHsp/8sVDQSs5dSL1FQvObC65B J73tmMX2C0In0N8OLL9WMM6p4tQZdaqVuPwreowznTpN6prSvLZ5HTNSEZUcVkRJAz dY3ktNzFJGTLMgUbtVsBiG0+O02wMFVi8oY9pz/4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727967AbfKOGXH (ORCPT ); Fri, 15 Nov 2019 01:23:07 -0500 Received: from mail.kernel.org ([198.145.29.99]:52694 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727937AbfKOGXC (ORCPT ); Fri, 15 Nov 2019 01:23:02 -0500 Received: from localhost (unknown [104.132.150.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9F21220740; Fri, 15 Nov 2019 06:23:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573798982; bh=c+L6FNSbEbluDnQBJNCYdxJd5Y4TDhx5J6OUqGg7FPQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UDauLwXCwEuxABCbkAyoju4t509Mb2Q7iDX2uDuIif1TW/ZPvvqAn0pfyMlkhMLFt RGa2sX/vtRFoqeGkX5M5oLFdaaoG4Ag/NWFZkHFpPa6Nk7NdoNcyGf3UDQv+Hy0tbX NOSmbIvLUve7MH8G+AtB1KKApkDrZYrO2tgrYGYs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ben Hutchings Subject: [PATCH 4.9 23/31] KVM: x86: Add is_executable_pte() Date: Fri, 15 Nov 2019 14:20:52 +0800 Message-Id: <20191115062018.378810254@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191115062009.813108457@linuxfoundation.org> References: <20191115062009.813108457@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ben Hutchings Extracted from commit d3e328f2cb01 "kvm: x86: mmu: Verify that restored PTE has needed perms in fast page fault". Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/mmu.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -338,6 +338,11 @@ static int is_last_spte(u64 pte, int lev return 0; } +static bool is_executable_pte(u64 spte) +{ + return (spte & (shadow_x_mask | shadow_nx_mask)) == shadow_x_mask; +} + static kvm_pfn_t spte_to_pfn(u64 pte) { return (pte & PT64_BASE_ADDR_MASK) >> PAGE_SHIFT;