From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3znkF15v7yzF1km for ; Fri, 23 Feb 2018 19:01:07 +1100 (AEDT) Subject: Re: [PATCH 0/5] PPC32/ioremap: Use memblock API to check for RAM To: =?UTF-8?Q?Jonathan_Neusch=c3=a4fer?= , linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, Michael Ellerman , linux-mm@kvack.org, Joel Stanley References: <20180222121516.23415-1-j.neuschaefer@gmx.net> From: Christophe LEROY Message-ID: Date: Fri, 23 Feb 2018 09:01:17 +0100 MIME-Version: 1.0 In-Reply-To: <20180222121516.23415-1-j.neuschaefer@gmx.net> Content-Type: text/plain; charset=utf-8; format=flowed List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Le 22/02/2018 à 13:15, Jonathan Neuschäfer a écrit : > This patchset solves the same problem as my previous one[1] but follows > a rather different approach. Instead of implementing DISCONTIGMEM for > PowerPC32, I simply switched the "is this RAM" check in __ioremap_caller > to the existing page_is_ram function, and unified page_is_ram to search > memblock.memory on PPC64 and PPC32. > > The intended result is, as before, that my Wii can allocate the MMIO > range of its GPIO controller, which was previously not possible, because > the reserved memory hack (__allow_ioremap_reserved) didn't affect the > API in kernel/resource.c. > > Thanks to Christophe Leroy for reviewing the previous patchset. I tested your new serie, it doesn't break my 8xx so it is OK for me. Christophe > > [1]: https://www.spinics.net/lists/kernel/msg2726786.html > > Jonathan Neuschäfer (5): > powerpc: mm: Simplify page_is_ram by using memblock_is_memory > powerpc: mm: Use memblock API for PPC32 page_is_ram > powerpc/mm/32: Use page_is_ram to check for RAM > powerpc: wii: Don't rely on the reserved memory hack > powerpc/mm/32: Remove the reserved memory hack > > arch/powerpc/mm/init_32.c | 5 ----- > arch/powerpc/mm/mem.c | 12 +----------- > arch/powerpc/mm/mmu_decl.h | 1 - > arch/powerpc/mm/pgtable_32.c | 4 +--- > arch/powerpc/platforms/embedded6xx/wii.c | 14 +------------- > 5 files changed, 3 insertions(+), 33 deletions(-) >