From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: From: "Wichert, Gerhard" Subject: AW: [bigmem-patch] 4GB with Linux on IA32 Date: Thu, 19 Aug 1999 16:01:52 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Sender: owner-linux-mm@kvack.org Return-Path: To: Thierry Vignaud , Andrea Arcangeli Cc: Alan Cox , Kanoj Sarcar , torvalds@transmeta.com, sct@redhat.com, "Wichert, Gerhard" , "Gerhard, Winfried" , linux-kernel@vger.rutgers.edu, linux-mm@kvack.org List-ID: > -----Ursprungliche Nachricht----- > Von: Thierry Vignaud [mailto:tvignaud@mandrakesoft.com] > Gesendet am: Donnerstag, 19. August 1999 15:34 > An: Andrea Arcangeli > Cc: Alan Cox; Kanoj Sarcar; torvalds@transmeta.com; sct@redhat.com; > Gerhard.Wichert@pdb.siemens.de; Winfried.Gerhard@pdb.siemens.de; > linux-kernel@vger.rutgers.edu; linux-mm@kvack.org > Betreff: Re: [bigmem-patch] 4GB with Linux on IA32 > > Andrea Arcangeli wrote: > > > > I uploaded a new bigmem-2.3.13-M patch here: > > > > > ftp://e-mind.com/pub/andrea/kernel-patches/2.3.13/bigmem-2.3.13-M > > > > (the raw-io must be avoided with bigmem enabled, since the > protection I > > added in get_page_map() doesn't work right now) > > > > If you'll avoid to do raw-io the patch should be safe and > ready to use. > > since only recent motherboard support more than 512Mb RAM, and since > they used i686 (PPro, P2, P3), why not use the pse36 > extension of these > cpu that enable to stock the segment length on 24bits, which give 64To > when mem unit is 4b page. > this'll make the limit much higher (say 128Mb RAM for the kernel space > memory and 15,9To for the user space). With pse36 only your physical address space will grow. Your virtual address space is still limited to 4GB. Gerhard -- 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/