From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Guangrong Subject: [PATCH 3/7] KVM: MMU: set access bit for direct mapping Date: Mon, 27 Sep 2010 18:05:00 +0800 Message-ID: <4CA06C4C.1070000@cn.fujitsu.com> References: <4CA06BA4.4090303@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Marcelo Tosatti , LKML , KVM To: Avi Kivity Return-path: Received: from cn.fujitsu.com ([222.73.24.84]:63675 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S932633Ab0I0KAf (ORCPT ); Mon, 27 Sep 2010 06:00:35 -0400 In-Reply-To: <4CA06BA4.4090303@cn.fujitsu.com> Sender: kvm-owner@vger.kernel.org List-ID: Set access bit while setup up direct page table if it's nonpaing or npt enabled, it's good for CPU's speculate access Xiao Guangrong --- arch/x86/kvm/mmu.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 3630046..88203fa 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2240,7 +2240,8 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write, __set_spte(iterator.sptep, __pa(sp->spt) | PT_PRESENT_MASK | PT_WRITABLE_MASK - | shadow_user_mask | shadow_x_mask); + | shadow_user_mask | shadow_x_mask + | shadow_accessed_mask); } } return pt_write; -- 1.7.0.4