From: Andrea Arcangeli <andrea@suse.de>
To: "Cabaniols, Sebastien" <Sebastien.Cabaniols@Compaq.com>
Cc: "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] memory mngt > 2 Gbytes and DMA for the Alpha? pci_iommu.c
Date: Wed, 9 May 2001 16:29:28 +0200 [thread overview]
Message-ID: <20010509162928.M2506@athlon.random> (raw)
In-Reply-To: <1FF17ADDAC64D0119A6E0000F830C9EA04B3CDE0@aeoexc1.aeo.cpqcorp.net>
In-Reply-To: <1FF17ADDAC64D0119A6E0000F830C9EA04B3CDE0@aeoexc1.aeo.cpqcorp.net>; from Sebastien.Cabaniols@Compaq.com on Wed, May 09, 2001 at 04:12:41PM +0200
On Wed, May 09, 2001 at 04:12:41PM +0200, Cabaniols, Sebastien wrote:
> Hi lkml,
>
> There is likely a bug in the management of memory above two Gigabytes and
> DMA in kernel 2.4.4
> (up to ac-6) with the alpha. :-(
remeber why last yaer I was advocating a CONFIG_HIGHMEM option also in
2.4 and not only in 2.2? If we had that now I would tell you "set
HIGHMEM to y until we fix it" and you could use more up to terabyte of
ram in the meantime.
> When I boot the system with mem=2048M, everything is back... network,
> storage...
can you try to set DEBUG_NODIRECT to 1 in pci_iommu.c and then to boot
with mem=2048M, if you can reproduce I should be able to reproduce too.
Andrea
prev parent reply other threads:[~2001-05-09 14:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-09 14:12 [BUG] memory mngt > 2 Gbytes and DMA for the Alpha? pci_iommu.c Cabaniols, Sebastien
2001-05-09 14:29 ` Andrea Arcangeli [this message]
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