Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755841AbbESRZz (ORCPT ); Tue, 19 May 2015 13:25:55 -0400 Received: from mail-wg0-f50.google.com ([74.125.82.50]:34649 "EHLO mail-wg0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755279AbbESRZv (ORCPT ); Tue, 19 May 2015 13:25:51 -0400 From: Paolo Bonzini To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Takuya Yoshikawa , Xiao Guangrong , rkrcmar@redhat.com Subject: [PATCH 6/9] KVM: pass kvm_memory_slot to gfn_to_page_many_atomic Date: Tue, 19 May 2015 19:25:10 +0200 Message-Id: <1432056313-36100-7-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1432056313-36100-1-git-send-email-pbonzini@redhat.com> References: <1432056313-36100-1-git-send-email-pbonzini@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2822 Lines: 80 The memory slot is already available from gfn_to_memslot_dirty_bitmap. Isn't it a shame to look it up again? Plus, it makes gfn_to_page_many_atomic agnostic of multiple VCPU address spaces. Signed-off-by: Paolo Bonzini --- arch/x86/kvm/mmu.c | 6 ++++-- include/linux/kvm_host.h | 4 ++-- virt/kvm/kvm_main.c | 6 +++--- 3 files changed, 9 insertions(+), 7 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 1bf2ae9ca521..6a7e5b6246b1 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2728,15 +2728,17 @@ static int direct_pte_prefetch_many(struct kvm_vcpu *vcpu, u64 *start, u64 *end) { struct page *pages[PTE_PREFETCH_NUM]; + struct kvm_memory_slot *slot; unsigned access = sp->role.access; int i, ret; gfn_t gfn; gfn = kvm_mmu_page_get_gfn(sp, start - sp->spt); - if (!gfn_to_memslot_dirty_bitmap(vcpu, gfn, access & ACC_WRITE_MASK)) + slot = gfn_to_memslot_dirty_bitmap(vcpu, gfn, access & ACC_WRITE_MASK); + if (!slot) return -1; - ret = gfn_to_page_many_atomic(vcpu->kvm, gfn, pages, end - start); + ret = gfn_to_page_many_atomic(slot, gfn, pages, end - start); if (ret <= 0) return -1; diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 9bd3bc16be87..a8bcbc9c6078 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -526,8 +526,8 @@ void kvm_arch_flush_shadow_all(struct kvm *kvm); void kvm_arch_flush_shadow_memslot(struct kvm *kvm, struct kvm_memory_slot *slot); -int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, - int nr_pages); +int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, + struct page **pages, int nr_pages); struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 9f67c942d8ee..c57f44216a4e 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1428,13 +1428,13 @@ pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn) } EXPORT_SYMBOL_GPL(gfn_to_pfn_memslot_atomic); -int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, - int nr_pages) +int gfn_to_page_many_atomic(struct kvm_memory_slot *slot, gfn_t gfn, + struct page **pages, int nr_pages) { unsigned long addr; gfn_t entry; - addr = gfn_to_hva_many(gfn_to_memslot(kvm, gfn), gfn, &entry); + addr = gfn_to_hva_many(slot, gfn, &entry); if (kvm_is_error_hva(addr)) return -1; -- 1.8.3.1 -- 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/