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 F2941C433EF for ; Thu, 14 Apr 2022 13:31:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242083AbiDNNeG (ORCPT ); Thu, 14 Apr 2022 09:34:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244611AbiDNN1u (ORCPT ); Thu, 14 Apr 2022 09:27:50 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 10475A1465 for ; Thu, 14 Apr 2022 06:20:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1649942434; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=guPhHfLWQaBPsCmuIyaAa+212gzE/QcUkyjWekHqQX4=; b=gsXL352m9VTxuqNYDrrp8C+SMvtdEF3nfN9JWJ6U76695UCrKkK4apGaUM++YoA4bpEWoM Y2qIpJDV2L02S3uD3GZ0PnwM9qUuo5/JOKH7z+mpCe6UYYH8Qm0s5v58EgYq/cO5pJR7Xk nfEdwN1ZeXWHIL0n/4EvY0hvoPNdHrE= 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-424-3jbKgnbbPeSaioWPbhlXGA-1; Thu, 14 Apr 2022 09:20:29 -0400 X-MC-Unique: 3jbKgnbbPeSaioWPbhlXGA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 62071100BABE; Thu, 14 Apr 2022 13:20:28 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.40.195.11]) by smtp.corp.redhat.com (Postfix) with ESMTP id BD4A07C28; Thu, 14 Apr 2022 13:20:26 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Michael Kelley , Siddharth Chandrasekaran , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 06/34] KVM: x86: Prepare kvm_hv_flush_tlb() to handle L2's GPAs Date: Thu, 14 Apr 2022 15:19:45 +0200 Message-Id: <20220414132013.1588929-7-vkuznets@redhat.com> In-Reply-To: <20220414132013.1588929-1-vkuznets@redhat.com> References: <20220414132013.1588929-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org To handle L2 TLB flush requests, 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 1a6f9628cee9..fc4bb0ead9fa 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 @@ -1975,6 +1976,12 @@ 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