> With some simple calculations for various things, I predict ZONE_NORMAL
> will get filled by large boot-time allocations on x86 with PAE and 64GB
> of RAM. I'm not entirely sure what other sorts of pathologies arise
> while these beasts still function; but without enough ZONE_NORMAL to
> satisfy all the combined boot-time allocation requests, the kernel
> will surely panic.
...
> P.S.: Blame it on struct page.
Looks like running x86 with more than 16GB RAM is not a good idea.
If you need it, you need 64bit arch.
This limit can be raised substantially by reducing low 4GB memory
requirements, but don't you feel it's like running 16-bit DOS
on 686 class CPU? HIMEM.SYS, EMM, horde of DOS extenders - sounds familiar?
However, CPU vendors war over common 64-bit arch is still ahead...
-- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Jan 31 2002 - 21:00:20 EST