From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 16 Mar 2017 18:29:26 +0100 (CET) Received: from mail-wm0-x241.google.com ([IPv6:2a00:1450:400c:c09::241]:35277 "EHLO mail-wm0-x241.google.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23992111AbdCPR3TlcwTu (ORCPT ); Thu, 16 Mar 2017 18:29:19 +0100 Received: by mail-wm0-x241.google.com with SMTP id z133so4046545wmb.2; Thu, 16 Mar 2017 10:29:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:date:to:cc:subject:message-id:mail-followup-to:mime-version :content-disposition:in-reply-to:user-agent; bh=gFEgMmPQHT9SAn8aKum+zi+SGTWozSYLWm3iiX1PNE0=; b=RwZpuAScxswH7vMiFB7ncnY8v2Cj76lyMHgWVIl45khV/2WgR1TQzdxB0z3Ro5kyxV qMsNoxk2RsmKpsFN2JEZdrdPe/9O4knf74VbZS2TtKSVew+FYfxSXxglKLgPmfuMSmQA VSpUdmEgW769vWi0dmPu9L+eFRA4TpQVt7T9K5lBawGX19ChKT2JPmi9WrVZ+A5aM7jL MaNfGkkx4lUMOD+X0tOKPXoU+VkNrX9lhhES0Ja19a1QrWck9uLROJ10I7lawztVAjq+ qT9nr5blcc8fc2FOKIODvrPCFS7L+j11964pxSvK5YPkGPaLCUWsE/+o/jDFgw8LTxwk /XcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id :mail-followup-to:mime-version:content-disposition:in-reply-to :user-agent; bh=gFEgMmPQHT9SAn8aKum+zi+SGTWozSYLWm3iiX1PNE0=; b=EWUC4/zN45MYi5gAPGhmJgrlW/bERYrIWop9BxUByoUEYV+CjTz3UHLSnjDN3ODvYl Mmuayd05rvkTrmEeK/7i3THV3tFMFzjbBm12XJBFNiWelIsxGMJ4KrYPOOIfe+XFVN9P Bm3iL5wVVgohOpBFCrsvIwRicj4OfhyIgiqAOyJWXLoB5xAzKhhfEKUT7yvgDflZIU6I nxj7+UZ649wk5aMIgIJQXPJ5EpnRET9NZHcqs0a+pQn+uVFGBpsSEcUdX9PYB+nmLhMZ r2KCKoFFSVcAqHYaAeZNniC3UJHqEDvLSGLHtjRXvBhSEzMauvCzwlf5UCOx1ITzGBKz l7ow== X-Gm-Message-State: AFeK/H3hDPOhHPiu4RO6DXcw/OGi0WJ/dmx8eGh7/64ZUaLxyNM0nUvwjtFZcnmGg/njVg== X-Received: by 10.28.35.151 with SMTP id j145mr25086837wmj.50.1489685354351; Thu, 16 Mar 2017 10:29:14 -0700 (PDT) Received: from localhost (login1.zih.tu-dresden.de. [141.76.16.140]) by smtp.googlemail.com with ESMTPSA id i203sm5059463wmf.12.2017.03.16.10.29.12 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 16 Mar 2017 10:29:13 -0700 (PDT) From: Till Smejkal X-Google-Original-From: Till Smejkal Date: Thu, 16 Mar 2017 10:29:09 -0700 To: Thomas Gleixner Cc: Till Smejkal , Andy Lutomirski , Andy Lutomirski , Richard Henderson , Ivan Kokshaysky , Matt Turner , Vineet Gupta , Russell King , Catalin Marinas , Will Deacon , Steven Miao , Richard Kuo , Tony Luck , Fenghua Yu , James Hogan , Ralf Baechle , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Martin Schwidefsky , Heiko Carstens , Yoshinori Sato , Rich Felker , "David S. Miller" , Chris Metcalf , Ingo Molnar , "H. Peter Anvin" , X86 ML , Chris Zankel , Max Filippov , Arnd Bergmann , Greg Kroah-Hartman , Laurent Pinchart , Mauro Carvalho Chehab , Pawel Osciak , Marek Szyprowski , Kyungmin Park , David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , Felipe Balbi , Alexander Viro , Benjamin LaHaise , Nadia Yvette Chambers , Jeff Layton , "J. Bruce Fields" , Peter Zijlstra , Hugh Dickins , Arnaldo Carvalho de Melo , Alexander Shishkin , Jaroslav Kysela , Takashi Iwai , "linux-kernel@vger.kernel.org" , linux-alpha@vger.kernel.org, arcml , "linux-arm-kernel@lists.infradead.org" , adi-buildroot-devel@lists.sourceforge.net, linux-hexagon@vger.kernel.org, "linux-ia64@vger.kernel.org" , linux-metag@vger.kernel.org, Linux MIPS Mailing List , linux-parisc@vger.kernel.org, linuxppc-dev , "linux-s390@vger.kernel.org" , "linux-sh@vger.kernel.org" , sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, Linux Media Mailing List , linux-mtd@lists.infradead.org, USB list , Linux FS Devel , linux-aio@kvack.org, "linux-mm@kvack.org" , Linux API , linux-arch , ALSA development Subject: Re: [RFC PATCH 00/13] Introduce first class virtual address spaces Message-ID: <20170316172909.ux4u7dbspwlynsce@arch-dev> Mail-Followup-To: Thomas Gleixner , Till Smejkal , Andy Lutomirski , Andy Lutomirski , Richard Henderson , Ivan Kokshaysky , Matt Turner , Vineet Gupta , Russell King , Catalin Marinas , Will Deacon , Steven Miao , Richard Kuo , Tony Luck , Fenghua Yu , James Hogan , Ralf Baechle , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Martin Schwidefsky , Heiko Carstens , Yoshinori Sato , Rich Felker , "David S. Miller" , Chris Metcalf , Ingo Molnar , "H. Peter Anvin" , X86 ML , Chris Zankel , Max Filippov , Arnd Bergmann , Greg Kroah-Hartman , Laurent Pinchart , Mauro Carvalho Chehab , Pawel Osciak , Marek Szyprowski , Kyungmin Park , David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , Felipe Balbi , Alexander Viro , Benjamin LaHaise , Nadia Yvette Chambers , Jeff Layton , "J. Bruce Fields" , Peter Zijlstra , Hugh Dickins , Arnaldo Carvalho de Melo , Alexander Shishkin , Jaroslav Kysela , Takashi Iwai , "linux-kernel@vger.kernel.org" , linux-alpha@vger.kernel.org, arcml , "linux-arm-kernel@lists.infradead.org" , adi-buildroot-devel@lists.sourceforge.net, linux-hexagon@vger.kernel.org, "linux-ia64@vger.kernel.org" , linux-metag@vger.kernel.org, Linux MIPS Mailing List , linux-parisc@vger.kernel.org, linuxppc-dev , "linux-s390@vger.kernel.org" , "linux-sh@vger.kernel.org" , sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, Linux Media Mailing List , linux-mtd@lists.infradead.org, USB list , Linux FS Devel , linux-aio@kvack.org, "linux-mm@kvack.org" , Linux API , linux-arch , ALSA development MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170306 (1.8.0) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 57373 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: till.smejkal@googlemail.com Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On Thu, 16 Mar 2017, Thomas Gleixner wrote: > Why do we need yet another mechanism to represent something which looks > like a file instead of simply using existing mechanisms and extend them? You are right. I also recognized during the discussion with Andy, Chris, Matthew, Luck, Rich and the others that there are already other techniques in the Linux kernel that can achieve the same functionality when combined. As I said also to the others, I will drop the VAS segments for future versions. The first class virtual address space feature was the more interesting part of the patchset anyways. Thanks Till From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm0-x241.google.com ([IPv6:2a00:1450:400c:c09::241]:35277 "EHLO mail-wm0-x241.google.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23992111AbdCPR3TlcwTu (ORCPT ); Thu, 16 Mar 2017 18:29:19 +0100 From: Till Smejkal Date: Thu, 16 Mar 2017 10:29:09 -0700 Subject: Re: [RFC PATCH 00/13] Introduce first class virtual address spaces Message-ID: <20170316172909.ux4u7dbspwlynsce@arch-dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Return-Path: Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-subscribe: List-owner: List-post: List-archive: To: Thomas Gleixner Cc: Till Smejkal , Andy Lutomirski , Andy Lutomirski , Richard Henderson , Ivan Kokshaysky , Matt Turner , Vineet Gupta , Russell King , Catalin Marinas , Will Deacon , Steven Miao , Richard Kuo , Tony Luck , Fenghua Yu , James Hogan , Ralf Baechle , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Martin Schwidefsky , Heiko Carstens , Yoshinori Sato , Rich Felker , "David S. Miller" , Chris Metcalf , Ingo Molnar , "H. Peter Anvin" , X86 ML , Chris Zankel , Max Filippov , Arnd Bergmann , Greg Kroah-Hartman , Laurent Pinchart , Mauro Carvalho Chehab , Pawel Osciak , Marek Szyprowski , Kyungmin Park , David Woodhouse , Brian Norris , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , Felipe Balbi , Alexander Viro , Benjamin LaHaise , Nadia Yvette Chambers , Jeff Layton , "J. Bruce Fields" , Peter Zijlstra , Hugh Dickins , Arnaldo Carvalho de Melo , Alexander Shishkin , Jaroslav Kysela , Takashi Iwai , "linux-kernel@vger.kernel.org" , linux-alpha@vger.kernel.org, arcml , "linux-arm-kernel@lists.infradead.org" , adi-buildroot-devel@lists.sourceforge.net, linux-hexagon@vger.kernel.org, "linux-ia64@vger.kernel.org" , linux-metag@vger.kernel.org, Linux MIPS Mailing List , linux-parisc@vger.kernel.org, linuxppc-dev , "linux-s390@vger.kernel.org" , "linux-sh@vger.kernel.org" , sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, Linux Media Mailing List , linux-mtd@lists.infradead.org, USB list , Linux FS Devel , linux-aio@kvack.org, "linux-mm@kvack.org" , Linux API , linux-arch , ALSA development Message-ID: <20170316172909.NcktAvydT6Ii9WCFTZ5Kk8SYBvS86cDbP5XTKAbnGwk@z> On Thu, 16 Mar 2017, Thomas Gleixner wrote: > Why do we need yet another mechanism to represent something which looks > like a file instead of simply using existing mechanisms and extend them? You are right. I also recognized during the discussion with Andy, Chris, Matthew, Luck, Rich and the others that there are already other techniques in the Linux kernel that can achieve the same functionality when combined. As I said also to the others, I will drop the VAS segments for future versions. The first class virtual address space feature was the more interesting part of the patchset anyways. Thanks Till