On Fri, Aug 21, 2015 at 1:50 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: >> It seems that many systems with large amounts of memory >> will have a nicely aligned max_pfn ... so they will get >> the 2GB block size. If they don't have a well aligned >> max_pfn, then they need to use a smaller size to avoid >> the crash I saw. > > Good to me. Still stuff going on that I don't understand here. I increased the amount of mirrored memory in this machine which moved max_pfn to 0x7560000 and probe_memory_block_size() picked 512MB as the memory_block_size, which seemed plausible. But my kernel still crashed during boot with this value. :-( Forcing the block size to 128M made the system boot. Maybe all the holes in the e820 map matter too (specifically the alignment of the holes)? -Tony -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
