Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755347Ab3DPGjX (ORCPT ); Tue, 16 Apr 2013 02:39:23 -0400 Received: from e23smtp09.au.ibm.com ([202.81.31.142]:33676 "EHLO e23smtp09.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755322Ab3DPGjV (ORCPT ); Tue, 16 Apr 2013 02:39:21 -0400 From: Xiao Guangrong To: mtosatti@redhat.com Cc: gleb@redhat.com, avi.kivity@gmail.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Xiao Guangrong Subject: [PATCH v3 11/15] KVM: MMU: introduce kvm_clear_all_lpage_info Date: Tue, 16 Apr 2013 14:32:49 +0800 Message-Id: <1366093973-2617-12-git-send-email-xiaoguangrong@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <1366093973-2617-1-git-send-email-xiaoguangrong@linux.vnet.ibm.com> References: <1366093973-2617-1-git-send-email-xiaoguangrong@linux.vnet.ibm.com> x-cbid: 13041606-3568-0000-0000-000003702C04 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1993 Lines: 66 This function is used to reset the large page info of all guest page which will be used in later patch Signed-off-by: Xiao Guangrong --- arch/x86/kvm/x86.c | 25 +++++++++++++++++++++++++ arch/x86/kvm/x86.h | 2 ++ 2 files changed, 27 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 0c5bb2c..fc4956c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6909,6 +6909,31 @@ static void memslot_set_lpage_disallowed(struct kvm_memory_slot *slot, } } +static void clear_memslot_lpage_info(struct kvm_memory_slot *slot) +{ + int i; + + for (i = 1; i < KVM_NR_PAGE_SIZES; ++i) { + int lpages; + int level = i + 1; + + lpages = gfn_to_index(slot->base_gfn + slot->npages - 1, + slot->base_gfn, level) + 1; + + memset(slot->arch.lpage_info[i - 1], 0, + sizeof(*slot->arch.lpage_info[i - 1])); + memslot_set_lpage_disallowed(slot, slot->npages, i, lpages); + } +} + +void kvm_clear_all_lpage_info(struct kvm *kvm) +{ + struct kvm_memory_slot *slot; + + kvm_for_each_memslot(slot, kvm->memslots) + clear_memslot_lpage_info(slot); +} + static int kvm_arch_create_memslot(struct kvm_memory_slot *slot) { unsigned long npages = slot->npages; diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index e224f7a..beae540 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -108,6 +108,8 @@ static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa) return false; } +void kvm_clear_all_lpage_info(struct kvm *kvm); + void kvm_before_handle_nmi(struct kvm_vcpu *vcpu); void kvm_after_handle_nmi(struct kvm_vcpu *vcpu); int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip); -- 1.7.7.6 -- 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/