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 4D25BC433EF for ; Fri, 25 Feb 2022 11:35:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238516AbiBYLfr (ORCPT ); Fri, 25 Feb 2022 06:35:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234758AbiBYLfr (ORCPT ); Fri, 25 Feb 2022 06:35:47 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9623B1E4812 for ; Fri, 25 Feb 2022 03:35:15 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 30BBD6195F for ; Fri, 25 Feb 2022 11:35:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DB21C340E7; Fri, 25 Feb 2022 11:35:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1645788914; bh=esl1Z7vzzBKhG9ie9WjoWcx8nRoAOAPeQEstGR59AEg=; h=Subject:To:Cc:From:Date:From; b=JWjs7gnUqR989mjeESCPhCES8RqKtIl3T8SZJWrQFYCsd3msOvYdeSmoAaAzffrF7 i8qCBSOPXewXTdgnhXDTIyl1jKDrxPt2WcaESis//ezIuw5NzWmSAAxrWHTSej1CYG YqrViJL8yEjr0Aygpn1V/Uy0qzBu+lABugz8oYFc= Subject: FAILED: patch "[PATCH] KVM: x86: Add KVM_CAP_ENABLE_CAP to x86" failed to apply to 4.19-stable tree To: aaronlewis@google.com, pbonzini@redhat.com Cc: From: Date: Fri, 25 Feb 2022 12:35:04 +0100 Message-ID: <164578890499206@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 127770ac0d043435375ab86434f31a93efa88215 Mon Sep 17 00:00:00 2001 From: Aaron Lewis Date: Mon, 14 Feb 2022 21:29:51 +0000 Subject: [PATCH] KVM: x86: Add KVM_CAP_ENABLE_CAP to x86 Follow the precedent set by other architectures that support the VCPU ioctl, KVM_ENABLE_CAP, and advertise the VM extension, KVM_CAP_ENABLE_CAP. This way, userspace can ensure that KVM_ENABLE_CAP is available on a vcpu before using it. Fixes: 5c919412fe61 ("kvm/x86: Hyper-V synthetic interrupt controller") Signed-off-by: Aaron Lewis Message-Id: <20220214212950.1776943-1-aaronlewis@google.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index a4267104db50..3b4da6c7b25f 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -1394,7 +1394,7 @@ documentation when it pops into existence). ------------------- :Capability: KVM_CAP_ENABLE_CAP -:Architectures: mips, ppc, s390 +:Architectures: mips, ppc, s390, x86 :Type: vcpu ioctl :Parameters: struct kvm_enable_cap (in) :Returns: 0 on success; -1 on error diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 641044db415d..b8bd8da32045 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4233,6 +4233,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_EXIT_ON_EMULATION_FAILURE: case KVM_CAP_VCPU_ATTRIBUTES: case KVM_CAP_SYS_ATTRIBUTES: + case KVM_CAP_ENABLE_CAP: r = 1; break; case KVM_CAP_EXIT_HYPERCALL: