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Date: Wed, 27 May 2020 09:10:46 +0200 From: Thomas Bogendoerfer <tsbogend@...ha.franken.de> To: maobibo <maobibo@...ngson.cn> Cc: Andrew Morton <akpm@...ux-foundation.org>, Jiaxun Yang <jiaxun.yang@...goat.com>, Huacai Chen <chenhc@...ote.com>, Paul Burton <paulburton@...nel.org>, Dmitry Korotin <dkorotin@...ecomp.com>, Philippe Mathieu-Daudé <f4bug@...at.org>, Stafford Horne <shorne@...il.com>, Steven Price <steven.price@....com>, Anshuman Khandual <anshuman.khandual@....com>, linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, Mike Rapoport <rppt@...ux.ibm.com>, Sergei Shtylyov <sergei.shtylyov@...entembedded.com>, "Maciej W. Rozycki" <macro@....com>, linux-mm@...ck.org, David Hildenbrand <david@...hat.com> Subject: Re: [PATCH v6 3/4] mm/memory.c: Add memory read privilege on page fault handling On Wed, May 27, 2020 at 09:05:41AM +0800, maobibo wrote: > > > On 05/26/2020 05:44 AM, Andrew Morton wrote: > > On Mon, 25 May 2020 10:52:39 +0800 Bibo Mao <maobibo@...ngson.cn> wrote: > > > >> Here add pte_sw_mkyoung function to make page readable on MIPS > >> platform during page fault handling. This patch improves page > >> fault latency about 10% on my MIPS machine with lmbench > >> lat_pagefault case. > >> > >> It is noop function on other arches, there is no negative > >> influence on those architectures. > > > > Acked-by: Andrew Morton <akpm@...ux-foundation.org> > > > > Should I take these, or would the mips tree be preferred? I'm OK > > either way, but probably the MIPS tree would be better? > Thanks for reviewing again and again. > This patch is based on mips-next, maybe MIPS tree will be better. I'll take your next version then. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
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