From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [PATCH 1/1] PPC32 : Huge-page support for ppc440 From: Benjamin Herrenschmidt To: Josh Boyer In-Reply-To: <1162864834.3809.21.camel@zod.rchland.ibm.com> References: <454FC362.9070608@linux.vnet.ibm.com> <1162864834.3809.21.camel@zod.rchland.ibm.com> Content-Type: text/plain Date: Tue, 07 Nov 2006 13:24:47 +1100 Message-Id: <1162866287.28571.392.camel@localhost.localdomain> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, Edi Shmueli , linuxppc-embedded@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2006-11-06 at 20:00 -0600, Josh Boyer wrote: > Hi Edi, > > On Mon, 2006-11-06 at 18:21 -0500, Edi Shmueli wrote: > > From: Edi Shmueli edi@linux.vnet.ibm.com > > > > This patch enables applications to exploit the PPC440 TLB support for > > huge-page mapping, to minimize TLB thrashing. > > Applications with large memory footprint that exploit this support, > > experience minimal TLB misses, and boost in performance. > > NAS benchmarks performed with this patch indicate hundreds of percent of > > improvement in performance for some application. > > Known limitations: because each PMD covers 2MB of the process address > > space, the minimal huge-page size supported by this patch is 2M. > > > > Signed-off-by: Edi Shmueli edi@linux.vnet.ibm.com > > Your patch is line wrapped and the whitespace has been corrupted. It's > also against a bit older version of the kernel. > > Could you try to fixup these issues and resubmit? Paul's powerpc.git > tree would probably be best to diff against. Also, while it's great to have somebody do this work, I doubt there is much interest in merging it for arch/ppc... Ben.