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 DDCBEC433B4 for ; Fri, 21 May 2021 09:56:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BF227613CA for ; Fri, 21 May 2021 09:56:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237016AbhEUJ5V (ORCPT ); Fri, 21 May 2021 05:57:21 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:20477 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237271AbhEUJyy (ORCPT ); Fri, 21 May 2021 05:54:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1621590810; 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=uFFJyYsGinFWRUfBgXSMFbwaCr84HcgqzbG9Gvbm4qk=; b=HUdJlNc2nGFgDTz1vYohHndaECIgy99hrrBkQ57u0pggeSe0jix1iZxKEEASsxu0v//HGl rySheiwtAw0du6RcGjGBuR7QgXjzRwGTVV3P3OYQhiBMmrtycbXroFGTR9DwQKiixg85ej tVPmzVr9SOS/X/Wx7x1QFTDk4D/3AqU= 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-485-vDeoN0FsNI2EyMQZy96eyQ-1; Fri, 21 May 2021 05:53:29 -0400 X-MC-Unique: vDeoN0FsNI2EyMQZy96eyQ-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 CC48A801106; Fri, 21 May 2021 09:53:27 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.195.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id C708C687F7; Fri, 21 May 2021 09:53:25 +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 25/30] KVM: x86: hyper-v: Honor HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED bit Date: Fri, 21 May 2021 11:51:59 +0200 Message-Id: <20210521095204.2161214-26-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_X64_REMOTE_TLB_FLUSH_RECOMMENDED' privilege ('recommended' is rather a misnomer) to issue HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST/SPACE hypercalls. Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/hyperv.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 36ec688cda4e..f99072e092d0 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2044,6 +2044,12 @@ static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) */ return !kvm_hv_is_syndbg_enabled(hv_vcpu->vcpu) || hv_vcpu->cpuid_cache.features_ebx & HV_DEBUGGING; + case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX: + case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX: + case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST: + case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE: + return hv_vcpu->cpuid_cache.enlightenments_eax & + HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED; default: break; } -- 2.31.1