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 3D7BCC433EF for ; Fri, 11 Mar 2022 15:50:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349800AbiCKPvb (ORCPT ); Fri, 11 Mar 2022 10:51:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349697AbiCKPvQ (ORCPT ); Fri, 11 Mar 2022 10:51:16 -0500 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 25B4E1CABD1 for ; Fri, 11 Mar 2022 07:50:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647013804; 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=8gDwUidIwqdJttGlcdrWpuSeGlEE0r2bY8JHq9AKfxA=; b=GZAru+dyWHDavnOTtwhIpzGyfIQzgl19m/i5P9GVNgm0kC31FeBuARd40bOOTjKsan4bS8 OgVtAGhJnvyhzCmvIPGiO93wp/ZSqQ25zKh6kdsdGL92OFRuyDsIoYrRfHX7WXa/igL7eQ AVMEZg2RhGgjghFPypnJ3znySl6sg+M= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-497-Jc-1ZeiYOpilPD9DiF4GeQ-1; Fri, 11 Mar 2022 10:50:03 -0500 X-MC-Unique: Jc-1ZeiYOpilPD9DiF4GeQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 2DE791091DA1; Fri, 11 Mar 2022 15:50:02 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.40.194.45]) by smtp.corp.redhat.com (Postfix) with ESMTP id A9FD7785FD; Fri, 11 Mar 2022 15:49:59 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Michael Kelley , linux-hyperv@vger.kernel.org, Siddharth Chandrasekaran , linux-kernel@vger.kernel.org Subject: [PATCH 05/31] KVM: x86: Prepare kvm_hv_flush_tlb() to handle L2's GPAs Date: Fri, 11 Mar 2022 16:49:17 +0100 Message-Id: <20220311154943.2299191-6-vkuznets@redhat.com> In-Reply-To: <20220311154943.2299191-1-vkuznets@redhat.com> References: <20220311154943.2299191-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 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 f619acccbb6d..53eb9540494b 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 @@ -1969,6 +1970,12 @@ 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