On Fri, 2006-11-03 at 20:52 +0100, Andi Kleen wrote:
> On Friday 03 November 2006 20:47, Amul Shah wrote:
>
> > Andi, Vivek is right. We can use end_pfn_map. My observation is wrong.
>
> Ok. Then my patch should work?
The patch does work on a 2.6.16 derived kernel (SLES 10 kernel). The
2.6.19-rc4 kernel is doing some funny things when I use it as a kdump
kernel (regardless of the patch).
> > Vivek, the problem condition is in generic reserve_bootmem_core
> > (mm/bootmem.c), where this
> > BUG_ON(PFN_DOWN(addr) >= bdata->node_low_pfn);
> > checks the target address against the top of that node's memory.
>
> In general these early BUGs should be eliminated - they are always
> messy because the kernel exception handlers are not fully functional
> yet. printks or worst case panics are better.
>
> -Andi
I assume that we are not going to change mm/bootmem.c since your patch
works. Am I right?
Amul
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