From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Carstens Subject: Re: [PATCHv2 0/2] THREAD_INFO_IN_TASK prep work for arm64+s390 Date: Fri, 11 Nov 2016 10:16:22 +0100 Message-ID: <20161111091622.GA4019@osiris> References: <1477503787-25537-1-git-send-email-mark.rutland@arm.com> <20161102155020.GA17547@remoulade> <20161110181307.GC10137@leverpostej> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20161110181307.GC10137@leverpostej> Sender: linux-kernel-owner@vger.kernel.org To: Mark Rutland Cc: catalin.marinas@arm.com, linux-arch@vger.kernel.org, akpm@linux-foundation.org, keescook@chromium.org, luto@kernel.org, linux-kernel@vger.kernel.org, Martin Schwidefsky List-Id: linux-arch.vger.kernel.org Hi Mark, > On Wed, Nov 02, 2016 at 03:56:26PM +0000, Mark Rutland wrote: > > On Wed, Oct 26, 2016 at 06:43:05PM +0100, Mark Rutland wrote: > > > Heiko and I have been working on THREAD_INFO_IN_TASK for s390 and arm64 > > > respectively, and we're both targetting v4.10. > > > > > > These are the common core changes which we both require. I've put together a > > > branch [1,2] based on v4.9-rc2. I intend to tag this at some point next week so > > > that Heiko and I have a stable base. > > > > As a heads-up, I've collated the tags I've received in the last few days, along > > with the comment Andy requested in the v1 thread, and tagged this as > > core-ti-stack-split [1]. > > > > Thanks, > > Mark. > > > > [1] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git core-ti-stack-split > > I believe that Catalin's hoping to take my arm64 patches for v4.10, > using the above tag as a base. > > What's the plan for s390? Are you happy to do the same? We intend to merge the s390 variant also for v4.10. Our approach has changed however: we came to the conclusion that having a per-cpu preempt count will generate better code on s390; so Martin implemented that. And while being at it he also moved the rest of the s390 specific stuff out of our struct thread_info. The corresponding patches will be pushed to git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features branch soon. In result we will have a struct thread_info that only contains the flags field like x86 does. So we don't depend an any other patches anymore... From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:46941 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755946AbcKKJQc (ORCPT ); Fri, 11 Nov 2016 04:16:32 -0500 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uAB9Dmt3131604 for ; Fri, 11 Nov 2016 04:16:31 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 26na6natd2-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 11 Nov 2016 04:16:31 -0500 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 11 Nov 2016 09:16:28 -0000 Date: Fri, 11 Nov 2016 10:16:22 +0100 From: Heiko Carstens Subject: Re: [PATCHv2 0/2] THREAD_INFO_IN_TASK prep work for arm64+s390 References: <1477503787-25537-1-git-send-email-mark.rutland@arm.com> <20161102155020.GA17547@remoulade> <20161110181307.GC10137@leverpostej> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161110181307.GC10137@leverpostej> Message-ID: <20161111091622.GA4019@osiris> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Mark Rutland Cc: catalin.marinas@arm.com, linux-arch@vger.kernel.org, akpm@linux-foundation.org, keescook@chromium.org, luto@kernel.org, linux-kernel@vger.kernel.org, Martin Schwidefsky Message-ID: <20161111091622.xMzz6xctJd57iXDVcXIYZewDNsStg_8CIKGQnIWz1tM@z> Hi Mark, > On Wed, Nov 02, 2016 at 03:56:26PM +0000, Mark Rutland wrote: > > On Wed, Oct 26, 2016 at 06:43:05PM +0100, Mark Rutland wrote: > > > Heiko and I have been working on THREAD_INFO_IN_TASK for s390 and arm64 > > > respectively, and we're both targetting v4.10. > > > > > > These are the common core changes which we both require. I've put together a > > > branch [1,2] based on v4.9-rc2. I intend to tag this at some point next week so > > > that Heiko and I have a stable base. > > > > As a heads-up, I've collated the tags I've received in the last few days, along > > with the comment Andy requested in the v1 thread, and tagged this as > > core-ti-stack-split [1]. > > > > Thanks, > > Mark. > > > > [1] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git core-ti-stack-split > > I believe that Catalin's hoping to take my arm64 patches for v4.10, > using the above tag as a base. > > What's the plan for s390? Are you happy to do the same? We intend to merge the s390 variant also for v4.10. Our approach has changed however: we came to the conclusion that having a per-cpu preempt count will generate better code on s390; so Martin implemented that. And while being at it he also moved the rest of the s390 specific stuff out of our struct thread_info. The corresponding patches will be pushed to git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features branch soon. In result we will have a struct thread_info that only contains the flags field like x86 does. So we don't depend an any other patches anymore...