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 X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 590C9C00A89 for ; Mon, 2 Nov 2020 21:15:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94FEF207BB for ; Mon, 2 Nov 2020 21:15:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="UmTO67i6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726188AbgKBVPr (ORCPT ); Mon, 2 Nov 2020 16:15:47 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:25628 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725833AbgKBVPr (ORCPT ); Mon, 2 Nov 2020 16:15:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604351745; 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=n8nC5dm2QcEcDOmnZj7Db/s9oem13/v8vyPc3hhuf6g=; b=UmTO67i6+5emYrBMQj0DdB9OJmtjAqjasx+Bv+rUUqd/Xa14c+8LHRD+GSPNd9RKbUxaED EjYbibxdCJylEwnVE5LbQYKrOE66KPRW7uVkwff0HAWYeHufozqvzyOZNywyF8GXiJ+4xf 23CiAZPR+zkJZV38/0L+3W8r5Nv33Kw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-553-4m5bZXnGOneDcOI2Osgarg-1; Mon, 02 Nov 2020 16:15:41 -0500 X-MC-Unique: 4m5bZXnGOneDcOI2Osgarg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 40A8610199AC; Mon, 2 Nov 2020 21:15:39 +0000 (UTC) Received: from ovpn-112-12.rdu2.redhat.com (ovpn-112-12.rdu2.redhat.com [10.10.112.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id DC88475121; Mon, 2 Nov 2020 21:15:34 +0000 (UTC) Message-ID: <0bd01646f4b429e89359d0618d25f5d6cf92c4f5.camel@redhat.com> Subject: Re: [PATCH] s390: add support for TIF_NOTIFY_SIGNAL From: Qian Cai To: Jens Axboe Cc: linux-s390@vger.kernel.org, Heiko Carstens , linux-kernel@vger.kernel.org, peterz@infradead.org, oleg@redhat.com, tglx@linutronix.de, Stephen Rothwell , Linux-Next Mailing List Date: Mon, 02 Nov 2020 16:15:34 -0500 In-Reply-To: References: <20201101173153.GC9375 () osiris> <362e3645e2c0891309c07e244a147f0c32f106da.camel@redhat.com> <54c02fa6-8c8a-667f-af99-e83a1f150586@kernel.dk> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2020-11-02 at 12:50 -0700, Jens Axboe wrote: > Ah, but that's because later patches assume that TIF_NOTIFY_SIGNAL is > always there once all archs have been converted. If you just want to back > out that patch, you'll need to just revert this one: > > commit 82ef6998ed9d488e56bbfbcc2ec9adf62bf78f08 > Author: Jens Axboe > Date: Fri Oct 9 16:04:39 2020 -0600 > > kernel: remove checking for TIF_NOTIFY_SIGNAL > > as well and I suspect it should build. No, at the minimal, I'll need to revert those to build successfully. 7b074c15374c io_uring: remove 'twa_signal_ok' deadlock work-around eb48a0f216fa kernel: remove checking for TIF_NOTIFY_SIGNAL c634e6b63a81 signal: kill JOBCTL_TASK_WORK f8b667db31a3 io_uring: JOBCTL_TASK_WORK is no longer used by task_work 4c3d9c3b415a s390: add support for TIF_NOTIFY_SIGNAL Then, it will fix the boot issue as well.