Messages in this thread |  | | Date | Wed, 9 May 2001 16:29:28 +0200 | From | Andrea Arcangeli <> | Subject | Re: [BUG] memory mngt > 2 Gbytes and DMA for the Alpha? pci_iommu.c |
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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.
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