From mboxrd@z Thu Jan 1 00:00:00 1970 From: kanoj@google.engr.sgi.com (Kanoj Sarcar) Message-Id: <199911041848.KAA55976@google.engr.sgi.com> Subject: Re: The 4GB memory thing Date: Thu, 4 Nov 1999 10:48:20 -0800 (PST) In-Reply-To: from "Andrea Arcangeli" at Nov 4, 99 07:19:21 pm MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrea Arcangeli Cc: nconway.list@ukaea.org.uk, linux-mm@kvack.org List-ID: > > kanoj@google.engr.sgi.com (Kanoj Sarcar) writes: > > > I have a 2.2 patch for 4Gb support, which has seen a lot of stress > > testing by now. The 2.3 >2gb support uses a different (and better > > approach), but last I checked, things like rawio did not work above > > >2Gb. The 64Gb support is completely new ... > > 2.2.13aa3 includes both 4g bigmem support and rawio and you can do > rawio on all the memory (bigmem included). > > ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.2/2.2.13aa3/ > > This is the README on how to go in sync with 2.2.13aa3: > > ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/tools/apply-patches/README.gz > > -- > Andrea > I don't see a README.gz under http://www.kernel.org/pub/linux/kernel/people/andrea/tools/apply-patches/ In any case, did you a have a small technical README on how rawio works on bigmem in 2.2.13aa3? Btw, I haven't seen the rawio 2.2 port, I am assuming its very similar to 2.3 ... where brw_kiovec() refuses to accept PageHighMem pages. I didn't see anything in z-bigmem-2.2.13aa3-7 that tinkers either with fs/buffer.c. Thanks. Kanoj -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://humbolt.geo.uu.nl/Linux-MM/