From patchwork Tue Aug 21 03:02:22 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiao Guangrong X-Patchwork-Id: 1351671 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 5B441DFB6E for ; Tue, 21 Aug 2012 03:02:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755652Ab2HUDCh (ORCPT ); Mon, 20 Aug 2012 23:02:37 -0400 Received: from e28smtp08.in.ibm.com ([122.248.162.8]:58047 "EHLO e28smtp08.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755027Ab2HUDCg (ORCPT ); Mon, 20 Aug 2012 23:02:36 -0400 Received: from /spool/local by e28smtp08.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 21 Aug 2012 08:32:34 +0530 Received: from d28relay05.in.ibm.com (9.184.220.62) by e28smtp08.in.ibm.com (192.168.1.138) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Tue, 21 Aug 2012 08:32:31 +0530 Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q7L32UsZ15663190; Tue, 21 Aug 2012 08:32:30 +0530 Received: from d28av04.in.ibm.com (loopback [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q7L32SDV005459; Tue, 21 Aug 2012 13:02:29 +1000 Received: from localhost.localdomain ([9.123.236.99]) by d28av04.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id q7L32NEV004898; Tue, 21 Aug 2012 13:02:24 +1000 Message-ID: <5032FA3E.9000204@linux.vnet.ibm.com> Date: Tue, 21 Aug 2012 11:02:22 +0800 From: Xiao Guangrong User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120717 Thunderbird/14.0 MIME-Version: 1.0 To: Xiao Guangrong CC: Avi Kivity , Marcelo Tosatti , LKML , KVM Subject: [PATCH v6 10/12] KVM: introduce KVM_HVA_ERR_RO_BAD References: <5032F8FD.2020306@linux.vnet.ibm.com> In-Reply-To: <5032F8FD.2020306@linux.vnet.ibm.com> x-cbid: 12082103-2000-0000-0000-000008C7C6A2 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org In the later patch, it indicates failure when we try to get a writable hva from the readonly memslot Signed-off-by: Xiao Guangrong --- include/linux/kvm_host.h | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index b9bba60..a913ac7 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -82,11 +82,12 @@ static inline bool is_invalid_pfn(pfn_t pfn) return !is_noslot_pfn(pfn) && is_error_pfn(pfn); } -#define KVM_HVA_ERR_BAD (PAGE_OFFSET) +#define KVM_HVA_ERR_BAD (PAGE_OFFSET) +#define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) static inline bool kvm_is_error_hva(unsigned long addr) { - return addr == PAGE_OFFSET; + return addr >= PAGE_OFFSET; } #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))