Re: [PATCH v3] x86, kdump: Set crashkernel_low automatically

From: H. Peter Anvin
Date: Mon Mar 18 2013 - 20:30:01 EST

On 03/18/2013 04:26 PM, Yinghai Lu wrote:
> now only have:
> swiotlb overflow buffer
> v_overflow_buffer = alloc_bootmem_low_pages_nopanic(
> PAGE_ALIGN(io_tlb_overflow));
> and
> /*
> * When the IOMMU overflows we return a fallback buffer. This
> sets the size.
> */
> static unsigned long io_tlb_overflow = 32*1024;
> so it is 32K, and I round it to 8M.

So put that into prose, understandable by someone who hasn't followed
this discussion (say, five years from now), and make that part of the

H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.

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