Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935582Ab0GPDcK (ORCPT ); Thu, 15 Jul 2010 23:32:10 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:60273 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S935559Ab0GPDcI (ORCPT ); Thu, 15 Jul 2010 23:32:08 -0400 Message-ID: <4C3FD1C9.5010909@cn.fujitsu.com> Date: Fri, 16 Jul 2010 11:28:09 +0800 From: Xiao Guangrong User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: Avi Kivity CC: Marcelo Tosatti , LKML , KVM list Subject: [PATCH v2 5/6] KVM: MMU: cleanup spte set and accssed/dirty tracking References: <4C3FCFD7.5070005@cn.fujitsu.com> In-Reply-To: <4C3FCFD7.5070005@cn.fujitsu.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2009 Lines: 65 Introduce set_spte_track_bits() to cleanup current code Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c | 17 ++++++++--------- 1 files changed, 8 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 4123e8e..fb3ae54 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -679,7 +679,7 @@ static void rmap_remove(struct kvm *kvm, u64 *spte) } } -static void drop_spte(struct kvm *kvm, u64 *sptep, u64 new_spte) +static void set_spte_track_bits(u64 *sptep, u64 new_spte) { pfn_t pfn; u64 old_spte; @@ -692,6 +692,11 @@ static void drop_spte(struct kvm *kvm, u64 *sptep, u64 new_spte) kvm_set_pfn_accessed(pfn); if (is_writable_pte(old_spte)) kvm_set_pfn_dirty(pfn); +} + +static void drop_spte(struct kvm *kvm, u64 *sptep, u64 new_spte) +{ + set_spte_track_bits(sptep, new_spte); rmap_remove(kvm, sptep); } @@ -791,7 +796,7 @@ static int kvm_set_pte_rmapp(struct kvm *kvm, unsigned long *rmapp, unsigned long data) { int need_flush = 0; - u64 *spte, new_spte, old_spte; + u64 *spte, new_spte; pte_t *ptep = (pte_t *)data; pfn_t new_pfn; @@ -812,13 +817,7 @@ static int kvm_set_pte_rmapp(struct kvm *kvm, unsigned long *rmapp, new_spte &= ~PT_WRITABLE_MASK; new_spte &= ~SPTE_HOST_WRITEABLE; new_spte &= ~shadow_accessed_mask; - if (is_writable_pte(*spte)) - kvm_set_pfn_dirty(spte_to_pfn(*spte)); - old_spte = __xchg_spte(spte, new_spte); - if (is_shadow_present_pte(old_spte) - && (!shadow_accessed_mask || - old_spte & shadow_accessed_mask)) - mark_page_accessed(pfn_to_page(spte_to_pfn(old_spte))); + set_spte_track_bits(spte, new_spte); spte = rmap_next(kvm, rmapp, spte); } } -- 1.6.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/