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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95CB9C433FE for ; Tue, 4 Oct 2022 12:48:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230050AbiJDMsT (ORCPT ); Tue, 4 Oct 2022 08:48:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46692 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230225AbiJDMrz (ORCPT ); Tue, 4 Oct 2022 08:47:55 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 900935D13B for ; Tue, 4 Oct 2022 05:46:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1664887501; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=V8vMp5f2Y/wI8yZ5MOhd65+sOWSd5A3CPE5Fatg95ek=; b=Q7hc8NFEsoXUVYn3iTdru2a9Hz4Dz/9ho8thPYmLqepfiRIpYTPVk08tFH/eX+qjH4VLv4 RFcI4Gdtsyyj/9lseehI2RyCLRg8JTpL51V6pIzTSAUvZbmnIX+X+UI3P51/1AKujxp+I3 z1AJ6EwPT6XQMTqEkmId9pR8gDJio5g= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-160-1C_IcT8JMbm6Fq39FlOftQ-1; Tue, 04 Oct 2022 08:41:11 -0400 X-MC-Unique: 1C_IcT8JMbm6Fq39FlOftQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A1BE0811E87; Tue, 4 Oct 2022 12:41:10 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.40.192.255]) by smtp.corp.redhat.com (Postfix) with ESMTP id 98FD317583; Tue, 4 Oct 2022 12:41:08 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini , Sean Christopherson Cc: Wanpeng Li , Jim Mattson , Michael Kelley , Siddharth Chandrasekaran , Yuan Yao , Maxim Levitsky , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v11 29/46] KVM: x86: Expose Hyper-V L2 TLB flush feature Date: Tue, 4 Oct 2022 14:39:39 +0200 Message-Id: <20221004123956.188909-30-vkuznets@redhat.com> In-Reply-To: <20221004123956.188909-1-vkuznets@redhat.com> References: <20221004123956.188909-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With both nSVM and nVMX implementations in place, KVM can now expose Hyper-V L2 TLB flush feature to userspace. Reviewed-by: Maxim Levitsky Signed-off-by: Vitaly Kuznetsov --- arch/x86/kvm/hyperv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index ff56983ea2db..76b033ced454 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2767,6 +2767,7 @@ int kvm_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid, case HYPERV_CPUID_NESTED_FEATURES: ent->eax = evmcs_ver; + ent->eax |= HV_X64_NESTED_DIRECT_FLUSH; ent->eax |= HV_X64_NESTED_MSR_BITMAP; ent->ebx |= HV_X64_NESTED_EVMCS1_PERF_GLOBAL_CTRL; break; -- 2.37.3