Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933463AbbEMGtx (ORCPT ); Wed, 13 May 2015 02:49:53 -0400 Received: from mga03.intel.com ([134.134.136.65]:60723 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753629AbbEMGqF (ORCPT ); Wed, 13 May 2015 02:46:05 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,419,1427785200"; d="scan'208";a="492939064" From: Xiao Guangrong To: pbonzini@redhat.com Cc: gleb@kernel.org, mtosatti@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Xiao Guangrong Subject: [PATCH v3 03/10] KVM: MMU: introduce PT_MAX_HUGEPAGE_LEVEL Date: Wed, 13 May 2015 14:42:21 +0800 Message-Id: <1431499348-25188-4-git-send-email-guangrong.xiao@linux.intel.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1431499348-25188-1-git-send-email-guangrong.xiao@linux.intel.com> References: <1431499348-25188-1-git-send-email-guangrong.xiao@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3907 Lines: 113 It's used to clean up the code. Thanks for Paolo Bonzini's suggestion Signed-off-by: Xiao Guangrong --- arch/x86/kvm/mmu.c | 24 +++++++++--------------- arch/x86/kvm/mmu.h | 1 + 2 files changed, 10 insertions(+), 15 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index afc8d15..e0e15b8 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -811,8 +811,7 @@ static void account_shadowed(struct kvm *kvm, gfn_t gfn) int i; slot = gfn_to_memslot(kvm, gfn); - for (i = PT_DIRECTORY_LEVEL; - i < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++i) { + for (i = PT_DIRECTORY_LEVEL; i <= PT_MAX_HUGEPAGE_LEVEL; ++i) { linfo = lpage_info_slot(gfn, slot, i); linfo->write_count += 1; } @@ -826,8 +825,7 @@ static void unaccount_shadowed(struct kvm *kvm, gfn_t gfn) int i; slot = gfn_to_memslot(kvm, gfn); - for (i = PT_DIRECTORY_LEVEL; - i < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++i) { + for (i = PT_DIRECTORY_LEVEL; i <= PT_MAX_HUGEPAGE_LEVEL; ++i) { linfo = lpage_info_slot(gfn, slot, i); linfo->write_count -= 1; WARN_ON(linfo->write_count < 0); @@ -858,8 +856,7 @@ static int host_mapping_level(struct kvm *kvm, gfn_t gfn) page_size = kvm_host_page_size(kvm, gfn); - for (i = PT_PAGE_TABLE_LEVEL; - i < (PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES); ++i) { + for (i = PT_PAGE_TABLE_LEVEL; i <= PT_MAX_HUGEPAGE_LEVEL; ++i) { if (page_size >= KVM_HPAGE_SIZE(i)) ret = i; else @@ -1344,8 +1341,7 @@ static bool rmap_write_protect(struct kvm *kvm, u64 gfn) slot = gfn_to_memslot(kvm, gfn); - for (i = PT_PAGE_TABLE_LEVEL; - i < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++i) { + for (i = PT_PAGE_TABLE_LEVEL; i <= PT_MAX_HUGEPAGE_LEVEL; ++i) { rmapp = __gfn_to_rmap(gfn, i, slot); write_protected |= __rmap_write_protect(kvm, rmapp, true); } @@ -1451,7 +1447,7 @@ static int kvm_handle_hva_range(struct kvm *kvm, gfn_end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, memslot); for (j = PT_PAGE_TABLE_LEVEL; - j < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++j) { + j <= PT_MAX_HUGEPAGE_LEVEL; ++j) { unsigned long idx, idx_end; unsigned long *rmapp; gfn_t gfn = gfn_start; @@ -4415,8 +4411,7 @@ void kvm_mmu_slot_remove_write_access(struct kvm *kvm, spin_lock(&kvm->mmu_lock); - for (i = PT_PAGE_TABLE_LEVEL; - i < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++i) { + for (i = PT_PAGE_TABLE_LEVEL; i <= PT_MAX_HUGEPAGE_LEVEL; ++i) { unsigned long *rmapp; unsigned long last_index, index; @@ -4572,8 +4567,8 @@ void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm, spin_lock(&kvm->mmu_lock); - for (i = PT_PAGE_TABLE_LEVEL + 1; /* skip rmap for 4K page */ - i < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++i) { + /* skip rmap for 4K page */ + for (i = PT_PAGE_TABLE_LEVEL + 1; i <= PT_MAX_HUGEPAGE_LEVEL; ++i) { unsigned long *rmapp; unsigned long last_index, index; @@ -4610,8 +4605,7 @@ void kvm_mmu_slot_set_dirty(struct kvm *kvm, spin_lock(&kvm->mmu_lock); - for (i = PT_PAGE_TABLE_LEVEL; - i < PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES; ++i) { + for (i = PT_PAGE_TABLE_LEVEL; i <= PT_MAX_HUGEPAGE_LEVEL; ++i) { unsigned long *rmapp; unsigned long last_index, index; diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index 0ada65e..72bb33f 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -43,6 +43,7 @@ #define PT_PDPE_LEVEL 3 #define PT_DIRECTORY_LEVEL 2 #define PT_PAGE_TABLE_LEVEL 1 +#define PT_MAX_HUGEPAGE_LEVEL (PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES - 1) static inline u64 rsvd_bits(int s, int e) { -- 2.1.0 -- 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/