From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Mallick, Asit K" Date: Wed, 19 Jul 2000 17:18:52 +0000 Subject: RE: [Linux-ia64] Re: Support for more than 2GB RAM Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org We are making good progress with the PCI DMA implementation and we should have a patch by end of this week. This will remove the 2GB RAM check adn will use all the memory in the system. --Asit > -----Original Message----- > From: David Mosberger [mailto:davidm@hpl.hp.com] > Sent: Wednesday, July 19, 2000 8:22 AM > To: Christoph Rohland > Cc: linux-ia64@linuxia64.org > Subject: [Linux-ia64] Re: Support for more than 2GB RAM > > > You should be able to change that check to 4GB without ill effects. > (The 1GB check is there for historical reasons.) Anyhow, if this > isn't urgent, I'd just wait until Goutham is done with the PCI DMA > implementation and then that check will go away completely. > > --david > > >>>>> On 19 Jul 2000 11:07:15 +0200, Christoph Rohland > said: > > Christoph> David Mosberger writes: > >> >>>>> On 18 Jul 2000 14:40:42 +0200, Christoph Rohland > >> said: > >> > Christoph> Hi, Are there any plans to support more than 2GB RAM in > Christoph> the near future? > >> There never was a limit for 2GB. 4GB is no problem and more > >> than 4GB works fine also except if there are 32-bit PCI devices > >> that do DMA (or the machine has huge holes in the physical > >> address space, which isn't true for the prototypes). For the DMA > >> issue, a solution is in the works (Goutham has been working on > >> this). > > Christoph> So why do I get the following: > > Christoph> Linux version 2.4.0-0.8smp (root@boris.devel.redhat.com) > Christoph> (gcc version 2.9-ia64-0 00216-final) #1 SMP Sun Jun 18 > Christoph> 00:32:35 EDT 2000 EFI v0.92 by INTEL > Christoph> AL460GX.86B.0027.D27.021800: SALsystab=0x7ff29d60 > Christoph> ACPI=0x7ffd 9718 MPS=0x7ffd0000 map_pal_code: mapping PAL > Christoph> code [0x7ff40000-0x7ff7b000) into [0xe00000007fc00000- > Christoph> 0xe000000080000000) Warning: ignoring 0MB of memory above > Christoph> 1GB! Warning: ignoring 0MB of memory above 1GB! > Christoph> Warning: ignoring 2046MB of memory above 1GB! > > Christoph> and I can only use 2GB of my 4GB machine? > > Christoph> Greetings Christoph > > > _______________________________________________ > Linux-IA64 mailing list > Linux-IA64@linuxia64.org > http://lists.linuxia64.org/lists/listinfo/linux-ia64 >