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 34984C433EF for ; Fri, 27 May 2022 15:58:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343763AbiE0P6A (ORCPT ); Fri, 27 May 2022 11:58:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353970AbiE0P5W (ORCPT ); Fri, 27 May 2022 11:57:22 -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 139F263BD9 for ; Fri, 27 May 2022 08:56:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1653667013; 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=rstaM81IjGEs4qP+rP12/LiFrIw6JXcZf6c2iHAH3ig=; b=QR7OMD9lwpreSaMBq45M0vgHVy9Pb1c1e3nZnydasb/PDr8LuxSf9tlEkj3YNz/zhvgMty R9VF2hcJt4zD3B44qy8Gpjbsk0uPuyb7Kpy5FUh9tNSM7i3I5xwNEpJyP0OJshru6vxsKO 0k9/3uSs3riCLS3UDOnl5/AV15mqPOo= 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-591-KuwEQxlKPSekqKdcMBVrrw-1; Fri, 27 May 2022 11:56:50 -0400 X-MC-Unique: KuwEQxlKPSekqKdcMBVrrw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id AA1F3804189; Fri, 27 May 2022 15:56:49 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.40.192.126]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4A6AB2166B26; Fri, 27 May 2022 15:56:47 +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 , Yuan Yao , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 22/37] KVM: x86: Expose Hyper-V L2 TLB flush feature Date: Fri, 27 May 2022 17:55:31 +0200 Message-Id: <20220527155546.1528910-23-vkuznets@redhat.com> In-Reply-To: <20220527155546.1528910-1-vkuznets@redhat.com> References: <20220527155546.1528910-1-vkuznets@redhat.com> MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 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 4396d75588d8..9925b6724524 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