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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 169AEC433F5 for ; Thu, 7 Apr 2022 15:57:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345328AbiDGP7T (ORCPT ); Thu, 7 Apr 2022 11:59:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345260AbiDGP7G (ORCPT ); Thu, 7 Apr 2022 11:59:06 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 8BF44CD67A for ; Thu, 7 Apr 2022 08:57:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1649347023; 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=l4Ij1PVDv45IK401IKW5KBvJ5zQSbzI2GX43TFBY6Mo=; b=SQa3CbW9NEScgZPr0mX4PrQO8MsH0YRKF1MvL+Qhb3QYd4NvDKNvjcMImiGjsVXVnZyvu7 7t6ra5K7FHftjnPu63KAUDtscudPL7YBmlU/0MmrWN/VwzkWZhm4Jccbe/t7WQyNdI35/u 8TtPUhDwESiVCu93yH+PwUG8hy1Md/Y= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-557-F_6iRBPRM_yc1MQXBMa9FA-1; Thu, 07 Apr 2022 11:57:00 -0400 X-MC-Unique: F_6iRBPRM_yc1MQXBMa9FA-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1D8BD100BAAD; Thu, 7 Apr 2022 15:57:00 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.40.192.50]) by smtp.corp.redhat.com (Postfix) with ESMTP id E98D354AC84; Thu, 7 Apr 2022 15:56:57 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Michael Kelley , Siddharth Chandrasekaran , linux-kernel@vger.kernel.org Subject: [PATCH v2 05/31] KVM: x86: Prepare kvm_hv_flush_tlb() to handle L2's GPAs Date: Thu, 7 Apr 2022 17:56:19 +0200 Message-Id: <20220407155645.940890-6-vkuznets@redhat.com> In-Reply-To: <20220407155645.940890-1-vkuznets@redhat.com> References: <20220407155645.940890-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To handle Direct TLB flush requests from L2, KVM needs to translate the specified L2 GPA to L1 GPA to read hypercall arguments from there. No fucntional change as KVM doesn't handle VMCALL/VMMCALL from L2 yet. Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/hyperv.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 75904820aced..d7bcdf87b90c 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -23,6 +23,7 @@ #include "ioapic.h" #include "cpuid.h" #include "hyperv.h" +#include "mmu.h" #include "xen.h" #include @@ -1955,6 +1956,12 @@ static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc) */ BUILD_BUG_ON(KVM_HV_MAX_SPARSE_VCPU_SET_BITS > 64); + if (!hc->fast && is_guest_mode(vcpu)) { + hc->ingpa = translate_nested_gpa(vcpu, hc->ingpa, 0, NULL); + if (unlikely(hc->ingpa == UNMAPPED_GVA)) + return HV_STATUS_INVALID_HYPERCALL_INPUT; + } + if (hc->code == HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST || hc->code == HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE) { if (hc->fast) { -- 2.35.1