Messages in this thread | | | Date | Thu, 11 Mar 2010 13:42:42 -0800 | From | Yinghai Lu <> | Subject | Re: mmotm boot panic bootmem-avoid-dma32-zone-by-default.patch |
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On 03/11/2010 01:40 PM, Jiri Slaby wrote: > On 03/11/2010 09:12 PM, Yinghai Lu wrote: >> On 03/11/2010 02:54 AM, Jiri Slaby wrote: >>> Hi, yes, it is 2.6.27. >> >> SLES 11? > > Sorry I wrote that in haste. It is SLES 10 in the end. That means it is > 2.6.16, not 2.6.27. Hence no sparsemem whatsoever. With SLES11 it should > be OK, we are using flatmem only for i386. > > Whatever, it should be no issue now, as flatmem currently (as of 2.6.25) > depends on i386. > > On the other hand I still considered the patch as applicable to > contemporary kernels since there might be weird bios e820 maps and huge > (and sparse) bootmem allocations/reservations (memory cgroups, initrd) > so that code requiring much memory below 4g (swiotlb) will fail then. > > Whatever, in the current kernel, the particular issue I was referring to > *is not reproducible*.
the point is: we should only put the memmap put high. that is big chunk... other users should be ok... and leave them alone.
YH
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