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 DF5F3C433F5 for ; Wed, 25 May 2022 09:05:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239087AbiEYJFT (ORCPT ); Wed, 25 May 2022 05:05:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240013AbiEYJEp (ORCPT ); Wed, 25 May 2022 05:04:45 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id CD1D89CF68 for ; Wed, 25 May 2022 02:03:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1653469346; 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=LD6H/7F5euHu6V/2GlTmGfwg6AmcqYIKVVcIAKTKGX8=; b=E+GJgzwWKSSVL8+4DjYfO9G9sfpYIdte2aRQTIAVB/uCK74NJqEfvz/xpXDBxBxyuvoCqg 2JRrd+46FIVff7Gfk2DGvV+N7gOFtX5Sny3xlghTO10ZkZ6ZW6QGswW3fG9Sl5DLycKYvR emQYqbmqVFR/JWiyE+G7sjwL4jhOcWU= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-647-zFCimh1JM-av-SB0FSl7Ag-1; Wed, 25 May 2022 05:02:23 -0400 X-MC-Unique: zFCimh1JM-av-SB0FSl7Ag-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 07E913802B87; Wed, 25 May 2022 09:02:23 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.40.194.186]) by smtp.corp.redhat.com (Postfix) with ESMTP id 462C5405D4BF; Wed, 25 May 2022 09:02:21 +0000 (UTC) From: Vitaly Kuznetsov To: kvm@vger.kernel.org, Paolo Bonzini Cc: Sean Christopherson , Maxim Levitsky , Wanpeng Li , Jim Mattson , Michael Kelley , Siddharth Chandrasekaran , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 22/37] KVM: x86: Expose Hyper-V L2 TLB flush feature Date: Wed, 25 May 2022 11:01:18 +0200 Message-Id: <20220525090133.1264239-23-vkuznets@redhat.com> In-Reply-To: <20220525090133.1264239-1-vkuznets@redhat.com> References: <20220525090133.1264239-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.11.54.1 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 9a41835ff4bc..7cdad050a5b7 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2774,6 +2774,7 @@ 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; break; -- 2.35.3