On Thursday 28 Jul 2011 14:29:45 Jedrzej Kalinowski wrote: > > That's fantastic; thanks a lot for doing that! > > > > Could you post the code that generated those two dumps as well, just > > so that I > > can be totally sure what's going on? > > I'm happy this looks useful :). > > Please find the patch links I've added under jpg links.
Sorry for the extended delay. I've spent some time looking at this. The only possible culprit I can find is the call to INT 15,2401 in enable_a20_bios(). This call potentially corrupts some registers (if the BIOS does so, which seems to be known to happen on some AMI BIOSes). I've made enable_a20_bios() preserve all registers to guard against BIOS corruption: http://git.ipxe.org/ipxe.git/commitdiff/10a6536 Could you try this latest version and see if the problem still exists? Thanks, Michael _______________________________________________ ipxe-devel mailing list ipxe-devel@lists.ipxe.org https://lists.ipxe.org/mailman/listinfo/ipxe-devel
