From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D61B9C433E2 for ; Thu, 14 May 2020 18:06:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD4D12065D for ; Thu, 14 May 2020 18:06:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="emtdtCA+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727083AbgENSGH (ORCPT ); Thu, 14 May 2020 14:06:07 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:50341 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726946AbgENSGD (ORCPT ); Thu, 14 May 2020 14:06:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1589479562; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XnOSKpz/GjmchUyWGb1CqsgEUovjDMqtxbsSwYKXQEo=; b=emtdtCA+mJI5mcJvk0ixnZUjpfniWDj4Ro1Da0s2YNmGudgr6vfXS986T4XSG4ICBvjrnL 5nhe5b6yaDAtMjk2IEt3oT3cvIMxcJ+J2v3E+37sbU6pg5mhmYWtOB3rvUFliV5iBAQ+NY 7YXDWwvl/tPToxrdjdWtrIp9uvF6Qzc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-132-gTKGoRguOyKgme7uFs6E8w-1; Thu, 14 May 2020 14:06:00 -0400 X-MC-Unique: gTKGoRguOyKgme7uFs6E8w-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2872180183C; Thu, 14 May 2020 18:05:59 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.178]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6E4345D9CA; Thu, 14 May 2020 18:05:54 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Michael Tsirkin , Julia Suvorova , Paolo Bonzini , Sean Christopherson , Wanpeng Li , Jim Mattson , x86@kernel.org Subject: [PATCH RFC 3/5] KVM: x86: move kvm_vcpu_gfn_to_memslot() out of try_async_pf() Date: Thu, 14 May 2020 20:05:38 +0200 Message-Id: <20200514180540.52407-4-vkuznets@redhat.com> In-Reply-To: <20200514180540.52407-1-vkuznets@redhat.com> References: <20200514180540.52407-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org No functional change intended. We will need to analyze slot information to map PTEs for KVM_MEM_ALLONES slots aggressively. Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/mmu/mmu.c | 14 ++++++++------ arch/x86/kvm/mmu/paging_tmpl.h | 7 +++++-- 2 files changed, 13 insertions(+), 8 deletions(-) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index e618472c572b..3db499df2dfc 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4078,11 +4078,10 @@ static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, kvm_vcpu_gfn_to_hva(vcpu, gfn), &arch); } -static bool try_async_pf(struct kvm_vcpu *vcpu, bool prefault, gfn_t gfn, - gpa_t cr2_or_gpa, kvm_pfn_t *pfn, bool write, - bool *writable) +static bool try_async_pf(struct kvm_vcpu *vcpu, struct kvm_memory_slot *slot, + bool prefault, gfn_t gfn, gpa_t cr2_or_gpa, + kvm_pfn_t *pfn, bool write, bool *writable) { - struct kvm_memory_slot *slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn); bool async; /* Don't expose private memslots to L2. */ @@ -4118,7 +4117,7 @@ static int direct_page_fault(struct kvm_vcpu *vcpu, gpa_t gpa, u32 error_code, bool exec = error_code & PFERR_FETCH_MASK; bool lpage_disallowed = exec && is_nx_huge_page_enabled(); bool map_writable; - + struct kvm_memory_slot *slot; gfn_t gfn = gpa >> PAGE_SHIFT; unsigned long mmu_seq; kvm_pfn_t pfn; @@ -4140,7 +4139,10 @@ static int direct_page_fault(struct kvm_vcpu *vcpu, gpa_t gpa, u32 error_code, mmu_seq = vcpu->kvm->mmu_notifier_seq; smp_rmb(); - if (try_async_pf(vcpu, prefault, gfn, gpa, &pfn, write, &map_writable)) + slot = kvm_vcpu_gfn_to_memslot(vcpu, gfn); + + if (try_async_pf(vcpu, slot, prefault, gfn, gpa, &pfn, write, + &map_writable)) return RET_PF_RETRY; if (handle_abnormal_pfn(vcpu, is_tdp ? 0 : gpa, gfn, pfn, ACC_ALL, &r)) diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h index efec7d27b8c5..98e368788e8b 100644 --- a/arch/x86/kvm/mmu/paging_tmpl.h +++ b/arch/x86/kvm/mmu/paging_tmpl.h @@ -781,6 +781,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gpa_t addr, u32 error_code, int write_fault = error_code & PFERR_WRITE_MASK; int user_fault = error_code & PFERR_USER_MASK; struct guest_walker walker; + struct kvm_memory_slot *slot; int r; kvm_pfn_t pfn; unsigned long mmu_seq; @@ -835,8 +836,10 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gpa_t addr, u32 error_code, mmu_seq = vcpu->kvm->mmu_notifier_seq; smp_rmb(); - if (try_async_pf(vcpu, prefault, walker.gfn, addr, &pfn, write_fault, - &map_writable)) + slot = kvm_vcpu_gfn_to_memslot(vcpu, walker.gfn); + + if (try_async_pf(vcpu, slot, prefault, walker.gfn, addr, &pfn, + write_fault, &map_writable)) return RET_PF_RETRY; if (handle_abnormal_pfn(vcpu, addr, walker.gfn, pfn, walker.pte_access, &r)) -- 2.25.4