On 11/18/2013 05:47 PM, David F. wrote:
> Thanks - I found the grub option for set debug= (I couldn't use all
> since it would lock up - but used disk,efidisk,modules,loader) and can
> see it reads 0x100 sectors from sector 0x500 then reads 0x4C00 sectors
> from sector 0x600. So perhaps that's it. Yes, legacy reads in the
> same inirmfs.gz file (which occupies 0x5AF to 0x525C) but I'm sure it
> does it in smaller chunks.
We saw similar problems with extremely large reads while developing the
Linux EFI boot stub. We ended up capping the size of any one read call
to 1 MB. Sad but true.
-hpa
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