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 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=unavailable 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 B9BEFC43603 for ; Fri, 21 May 2021 09:55:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C814613C8 for ; Fri, 21 May 2021 09:55:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237858AbhEUJ5M (ORCPT ); Fri, 21 May 2021 05:57:12 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:46723 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237234AbhEUJyq (ORCPT ); Fri, 21 May 2021 05:54:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1621590803; 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=RNaHxjIfLq3Pd2hikB6hQaT82u4euY4FemLlrtpUgrxASZtVETmhFDgAmce50CFQ7yw8uI D/PkPpmeSsfljYLtSi/qQLtZlfbUQINcfdGaHnxaSa5h2c40LBZGL3mH5OhwMH+1IXnNGM RrBQ/CucWeNF8q2a6THmBGGFrQ8lsqs= 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 To: kvm@vger.kernel.org, Paolo Bonzini Cc: Sean Christopherson , Wanpeng Li , Jim Mattson , Siddharth Chandrasekaran , 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: X-Mailing-List: linux-kernel@vger.kernel.org Hyper-V partition must possess 'HV_POST_MESSAGES' privilege to issue HVCALL_POST_MESSAGE hypercalls. Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/hyperv.c | 2 ++ 1 file changed, 2 insertions(+) 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; } -- 2.31.1