From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-la0-f47.google.com (mail-la0-f47.google.com [209.85.215.47]) by kanga.kvack.org (Postfix) with ESMTP id CAF706B0032 for ; Wed, 21 Jan 2015 04:37:21 -0500 (EST) Received: by mail-la0-f47.google.com with SMTP id hz20so5835656lab.6 for ; Wed, 21 Jan 2015 01:37:21 -0800 (PST) Received: from mail-la0-x235.google.com (mail-la0-x235.google.com. [2a00:1450:4010:c03::235]) by mx.google.com with ESMTPS id s1si16991967lal.3.2015.01.21.01.37.20 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 21 Jan 2015 01:37:20 -0800 (PST) Received: by mail-la0-f53.google.com with SMTP id gq15so14649161lab.12 for ; Wed, 21 Jan 2015 01:37:20 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20150121092956.4CF89A8@black.fi.intel.com> References: <20150121023003.GF30598@verge.net.au> <20150121092956.4CF89A8@black.fi.intel.com> Date: Wed, 21 Jan 2015 10:37:20 +0100 Message-ID: Subject: Re: Possible regression in next-20150120 due to "mm: account pmd page tables to the process" From: Geert Uytterhoeven Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: "Kirill A. Shutemov" Cc: Simon Horman , Andrew Morton , Hugh Dickins , Linux MM , Dave Hansen , Cyrill Gorcunov , Pavel Emelyanov , "linux-kernel@vger.kernel.org" , Linux-sh list , Magnus Damm Hi Kirill, Simon, On Wed, Jan 21, 2015 at 10:29 AM, Kirill A. Shutemov wrote: > Simon Horman wrote: >> Hi, >> >> I have observed what appears to be a regression caused >> by b316feb3c37ff19cd ("mm: account pmd page tables to the process"). >> >> The problem that I am seeing is that when booting the kzm9g board, which is >> based on the Renesas r8a73a4 ARM SoC, using its defconfig the following the Renesas sh73a0 ARM SoC, FWIW... >> tail boot log below is output repeatedly and the boot does not appear to >> proceed any further. >> >> I have observed this problem using next-20150120 and observed >> that it does not occur when the patch mentioned above is reverted. >> >> I have also observed what appears to be the same problem when >> booting the following boards using their defconfigs. And perhaps >> more to the point the problem appears to affect booting all >> boards based on Renesas ARM SoCs for which there is working support >> to boot them by initialising them using C (as opposed to device tree). >> >> * armadillo800eva, based on the r8a7740 SoC >> * mackerel, based on the sh7372 > > This should be fixed by this: > > http://marc.info/?l=linux-next&m=142176280218627&w=2 > > Please, test. Thanks! Confirmed the issue, and confirmed the fix (on sh73a0/kzm9g-legacy). Tested-by: Geert Uytterhoeven Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org