From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Guangrong Subject: Re: [PATCH V4 2/7] KVM, pkeys: disable pkeys for guests in non-paging mode Date: Sun, 6 Mar 2016 15:19:33 +0800 Message-ID: <56DBDA05.1090402@linux.intel.com> References: <1457177252-7577-1-git-send-email-huaitong.han@intel.com> <1457177252-7577-3-git-send-email-huaitong.han@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Huaitong Han , pbonzini@redhat.com, gleb@kernel.org Return-path: Received: from mga04.intel.com ([192.55.52.120]:50566 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751136AbcCFHTy (ORCPT ); Sun, 6 Mar 2016 02:19:54 -0500 In-Reply-To: <1457177252-7577-3-git-send-email-huaitong.han@intel.com> Sender: kvm-owner@vger.kernel.org List-ID: On 03/05/2016 07:27 PM, Huaitong Han wrote: > Pkeys is disabled if CPU is in non-paging mode in hardware. However KVM > always uses paging mode to emulate guest non-paging, mode with TDP. To > emulate this behavior, pkeys needs to be manually disabled when guest > switches to non-paging mode. Reviewed-by: Xiao Guangrong