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 lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 56B6AF436B2 for ; Fri, 17 Apr 2026 15:14:44 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wDkth-0000oA-GU; Fri, 17 Apr 2026 11:14:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wDktf-0000nM-3p for qemu-devel@nongnu.org; Fri, 17 Apr 2026 11:14:19 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wDktd-0008Dn-0l for qemu-devel@nongnu.org; Fri, 17 Apr 2026 11:14:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1776438855; 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: in-reply-to:in-reply-to:references:references; bh=bF1sUdajcbP9BdPXqjwCJ5oZy+hdSOHc4x6mwxuDKgU=; b=RDZjR6IsBL+KBTsvysMOhTtS0yIIzQnjIFXVtl+T1GKOcozeF256TNw+fy4gmS9yJ0+xmh dVLNxzjbe3k2oM63jphXKmI/WaQhwj4FciiO9mIa1NCKhZbVU2ML0heaPYlZPRRfk0DnZZ y5WCaNAi6HlZxhDT88sE/rJc6UoI06U= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-287-M902SZHLPYK8uxGqCTsHlg-1; Fri, 17 Apr 2026 11:14:10 -0400 X-MC-Unique: M902SZHLPYK8uxGqCTsHlg-1 X-Mimecast-MFC-AGG-ID: M902SZHLPYK8uxGqCTsHlg_1776438849 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2BEB818005B1; Fri, 17 Apr 2026 15:14:09 +0000 (UTC) Received: from localhost (unknown [10.44.48.66]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 32FB019560B1; Fri, 17 Apr 2026 15:14:07 +0000 (UTC) From: Cornelia Huck To: Thomas Huth , Halil Pasic , Christian Borntraeger , qemu-devel@nongnu.org Cc: Eric Farman , Matthew Rosato , qemu-s390x@nongnu.org Subject: Re: [PATCH] target/s390x/kvm: Simplify the async pfault handling code In-Reply-To: <20260317134531.460141-1-thuth@redhat.com> Organization: "Red Hat GmbH, Sitz: Werner-von-Siemens-Ring 12, D-85630 Grasbrunn, Handelsregister: Amtsgericht =?utf-8?Q?M=C3=BCnchen=2C?= HRB 153243, =?utf-8?Q?Gesch=C3=A4ftsf=C3=BChrer=3A?= Ryan Barnhart, Charles Cachera, Avril Crosse O'Flaherty" References: <20260317134531.460141-1-thuth@redhat.com> User-Agent: Notmuch/0.39 (https://notmuchmail.org) Date: Fri, 17 Apr 2026 17:14:05 +0200 Message-ID: <87zf31ty9u.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass client-ip=170.10.129.124; envelope-from=cohuck@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Tue, Mar 17 2026, Thomas Huth wrote: > From: Thomas Huth > > Since commit 126e7f78036 ("kvm: require KVM_CAP_IOEVENTFD and > KVM_CAP_IOEVENTFD_ANY_LENGTH") we require at least kernel v4.4 to > be able to use KVM. KVM_CAP_ASYNC_PF is available in the kernel > since v3.15 and KVM_SYNC_PFAULT is available since kernel v3.18, > so we can assume now that they are available in all supported > kernels. Thus simplify the code a little bit by removing the > checks for these features. > > Signed-off-by: Thomas Huth > --- > I just found this old patch on one of my local branches ... seems like > I forgot to send it out after writing it last year... > > target/s390x/kvm/kvm.c | 52 +++++++++--------------------------------- > 1 file changed, 11 insertions(+), 41 deletions(-) Thanks, queued to s390-next.