Re: [PATCH 2/2] x86 e820: Introduce memmap=resetusablemap for kdump usage

[H. Peter Anvin]

I guess that very limited use might make sense.

Yinghai Lu <yinghai@xxxxxxxxxx> wrote:

>On Mon, Jan 28, 2013 at 6:27 PM, H. Peter Anvin <hpa@xxxxxxxxx> 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

-- 
Sent from my mobile phone. Please excuse brevity and lack of formatting.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/