From patchwork Mon Apr 19 16:01:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Kuznetsov X-Patchwork-Id: 12212221 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=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 4328EC43470 for ; Mon, 19 Apr 2021 16:02:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2445A61370 for ; Mon, 19 Apr 2021 16:02:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242150AbhDSQCd (ORCPT ); Mon, 19 Apr 2021 12:02:33 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:39566 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242080AbhDSQC1 (ORCPT ); Mon, 19 Apr 2021 12:02:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618848117; 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=rLfEZQYANgmIdG86E3rNy/LIm1jZSWPvo00aLqGI/Sk=; b=IFBX8Kf32jqHdtZt82xPOi2iUGOUX9ktVAYdibL55RRL4hCYKeTB1sFdbP8lN6CTdjV/xV blKzBE8fQYdnap/zFSO/Og30sHXlknyEz9AFBPAfXD4pThOCDDNuMEfTGuZ9wSIaUkTHse Dss/R3KfUEqxdnlIdYiIWKOScQFGw/g= 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-454-8LYLUpldMJ-ulH-z9WZVOA-1; Mon, 19 Apr 2021 12:01:55 -0400 X-MC-Unique: 8LYLUpldMJ-ulH-z9WZVOA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 49B3A6D4EC; Mon, 19 Apr 2021 16:01:54 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.193.113]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8B02960636; Mon, 19 Apr 2021 16:01:52 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Siddharth Chandrasekaran , linux-kernel@vger.kernel.org Subject: [PATCH 09/30] KVM: x86: hyper-v: Honor HV_MSR_RESET_AVAILABLE privilege bit Date: Mon, 19 Apr 2021 18:01:06 +0200 Message-Id: <20210419160127.192712-10-vkuznets@redhat.com> In-Reply-To: <20210419160127.192712-1-vkuznets@redhat.com> References: <20210419160127.192712-1-vkuznets@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org HV_X64_MSR_RESET is only available to guest when HV_MSR_RESET_AVAILABLE bit is exposed. Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/hyperv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 0f3f30f6ca69..affc6e0cda09 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1213,6 +1213,9 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) case HV_X64_MSR_VP_INDEX: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_VP_INDEX_AVAILABLE; + case HV_X64_MSR_RESET: + return hv_vcpu->cpuid_cache.features_eax & + HV_MSR_RESET_AVAILABLE; default: break; }