Messages in this thread | | | Subject | Re: [PATCH 2/2] x86 e820: Introduce memmap=resetusablemap for kdump usage | From | "H. Peter Anvin" <> | Date | Mon, 28 Jan 2013 19:33:52 -0800 |
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I guess that very limited use might make sense.
Yinghai Lu <yinghai@kernel.org> wrote:
>On Mon, Jan 28, 2013 at 6:27 PM, H. Peter Anvin <hpa@zytor.com> wrote: >> To be more clear: the max_pfn stuff seems like a relic of the past, >and I am wondering what it would take to get rid of it. >> >> It clearly has the wrong semantics, except perhaps in the most >trivial allocator models. >> >one thing i think could be : use that decide if we need iommu/swiotlb. >like in >arch/x86/kernel/amd_gart_64.c >arch/x86/kernel/pci-swiotlb.c >drivers/iommu/amd_iommu.c >... > >Yinghai
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