From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933390AbcCHLqn (ORCPT ); Tue, 8 Mar 2016 06:46:43 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:34264 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932296AbcCHLpm (ORCPT ); Tue, 8 Mar 2016 06:45:42 -0500 From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: guangrong.xiao@linux.intel.com, huaitong.han@intel.com Subject: [RFC PATCH 0/2] KVM: MMU: return page fault error code from permission_fault Date: Tue, 8 Mar 2016 12:45:36 +0100 Message-Id: <1457437538-65867-1-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Intel's new PKU extension introduces a bit of the page fault error code that must be dynamically computed after the PTE lookup (unlike I/D, U/S and W/R). To ease this, these two patches make permission_fault return the page fault error code. Right now it only adds the P bit to the input parameter "pfec", but PKU can change that. Paolo Paolo Bonzini (2): KVM: MMU: precompute page fault error code KVM: MMU: return page fault error code from permission_fault arch/x86/kvm/mmu.c | 2 +- arch/x86/kvm/mmu.h | 15 ++++++++++----- arch/x86/kvm/paging_tmpl.h | 31 +++++++++++++++++-------------- 3 files changed, 28 insertions(+), 20 deletions(-) -- 1.8.3.1