Message ID | 20210521095204.2161214-23-vkuznets@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <kvm-owner@kernel.org> 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=-16.1 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 44ED1C433ED for <kvm@archiver.kernel.org>; Fri, 21 May 2021 09:54:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24D8F6135C for <kvm@archiver.kernel.org>; Fri, 21 May 2021 09:54:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237563AbhEUJ4M (ORCPT <rfc822;kvm@archiver.kernel.org>); Fri, 21 May 2021 05:56:12 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:57139 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237248AbhEUJys (ORCPT <rfc822;kvm@vger.kernel.org>); Fri, 21 May 2021 05:54:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1621590805; 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=kvI4aHrKBDx4iPPvJtxqjnBs76a0HVDHkAqFclxUy4w=; b=TTbbuVqkGu8aEi+hrHnPB+UFd8lNWa+wSNtV96uPDPg2FGvTgpocsCk3frvtBuVO1OpN43 nvqtxX50Z/rxp68R4PZL90dbNPpdatbX8Vdx6SFdrPt2u2HaO2olvMKalwSSoYfZUkEuQ1 0DSi/ojNxgmzdvXtMFB/krsZpSQ+uJo= 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-108-ZvSgprDDPZCM6F3wfozC5A-1; Fri, 21 May 2021 05:53:21 -0400 X-MC-Unique: ZvSgprDDPZCM6F3wfozC5A-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8BE281922964; Fri, 21 May 2021 09:53:20 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id 49E5A687F7; Fri, 21 May 2021 09:53:18 +0000 (UTC) From: Vitaly Kuznetsov <vkuznets@redhat.com> To: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com> Cc: Sean Christopherson <seanjc@google.com>, Wanpeng Li <wanpengli@tencent.com>, Jim Mattson <jmattson@google.com>, Siddharth Chandrasekaran <sidcha@amazon.de>, linux-kernel@vger.kernel.org Subject: [PATCH v2 22/30] KVM: x86: hyper-v: Honor HV_POST_MESSAGES privilege bit Date: Fri, 21 May 2021 11:51:56 +0200 Message-Id: <20210521095204.2161214-23-vkuznets@redhat.com> In-Reply-To: <20210521095204.2161214-1-vkuznets@redhat.com> References: <20210521095204.2161214-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: <kvm.vger.kernel.org> X-Mailing-List: kvm@vger.kernel.org |
Series |
KVM: x86: hyper-v: Fine-grained access check to Hyper-V hypercalls and MSRs
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diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index bd424f2d4294..ff86c00d1396 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2031,6 +2031,8 @@ static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) case HVCALL_NOTIFY_LONG_SPIN_WAIT: return hv_vcpu->cpuid_cache.enlightenments_ebx && hv_vcpu->cpuid_cache.enlightenments_ebx != U32_MAX; + case HVCALL_POST_MESSAGE: + return hv_vcpu->cpuid_cache.features_ebx & HV_POST_MESSAGES; default: break; }
Hyper-V partition must possess 'HV_POST_MESSAGES' privilege to issue HVCALL_POST_MESSAGE hypercalls. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> --- arch/x86/kvm/hyperv.c | 2 ++ 1 file changed, 2 insertions(+)