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List:       linux-kernel
Subject:    Re: [PATCH] x86_64: reserve dma32 early for gart
From:       Andi Kleen <ak () suse ! de>
Date:       2008-03-07 23:20:50
Message-ID: 200803080020.50474.ak () suse ! de
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On Saturday 08 March 2008 00:02:50 Yinghai Lu wrote:
> 
> 



>solution will be:
>1. make memmap allocation get memory above 4G...
>2. reserve some dma32 range early before we try to set up memmap for all.
>and release that before pci_iommu_alloc, so gart or swiotlb could get some
>range under 4g limit for sure.

Funny we had (1) before vmemmap for some time, but it looks like
that regressed with vmemmap Anyways I think (1) alone should be enough, is (2) 
really needed?

-Andi
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