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=-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 29C1AC433B4 for ; Mon, 19 Apr 2021 16:04:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1039B61369 for ; Mon, 19 Apr 2021 16:04:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242054AbhDSQEo (ORCPT ); Mon, 19 Apr 2021 12:04:44 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:22877 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242401AbhDSQDI (ORCPT ); Mon, 19 Apr 2021 12:03:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618848157; 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=q1n4o18GGyFzjWpbowfP+dNqOUCHVUzvAS4FyOkvWS8=; b=ckxoGbh+yOREeADyM2VDea6rEjz//1vM53wxF8VjyarD0DYsYQ8Ji2uJsKOPaxForu9+xs 9tJR3GK8CDAw+541np9ULXIDP9IRqEWbMYsY2RQsqz7K63ssN2WMcdqjsukE39peiNwRDF WSMHiE9RHGnoMOmamuGDNknavgFi6G0= 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-469-EylpUtc0NvqZsg-OBwyM1Q-1; Mon, 19 Apr 2021 12:02:36 -0400 X-MC-Unique: EylpUtc0NvqZsg-OBwyM1Q-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 CA98E1020C26; Mon, 19 Apr 2021 16:02:34 +0000 (UTC) Received: from vitty.brq.redhat.com (unknown [10.40.193.113]) by smtp.corp.redhat.com (Postfix) with ESMTP id 015E860636; Mon, 19 Apr 2021 16:02:32 +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 27/30] KVM: x86: hyper-v: Honor HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED bit Date: Mon, 19 Apr 2021 18:01:24 +0200 Message-Id: <20210419160127.192712-28-vkuznets@redhat.com> In-Reply-To: <20210419160127.192712-1-vkuznets@redhat.com> References: <20210419160127.192712-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hypercalls which use extended processor masks are only available when HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED privilege bit is exposed (and 'RECOMMENDED' is rather a misnomer). Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/hyperv.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index ba5af4d27ccf..4ad27e7cdb05 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2046,11 +2046,19 @@ static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) hv_vcpu->cpuid_cache.features_ebx & HV_DEBUGGING; case HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX: case HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX: + if (!(hv_vcpu->cpuid_cache.enlightenments_eax & + HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + return false; + fallthrough; 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; case HVCALL_SEND_IPI_EX: + if (!(hv_vcpu->cpuid_cache.enlightenments_eax & + HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + return false; + fallthrough; case HVCALL_SEND_IPI: return hv_vcpu->cpuid_cache.enlightenments_eax & HV_X64_CLUSTER_IPI_RECOMMENDED; -- 2.30.2