RE: x86-32 PAE-enabled kernel fails to boot with 64GB of RAM

From: Yuhong Bao
Date: Wed Dec 21 2011 - 01:41:31 EST



> On 12/06/2011 02:26 AM, Michal Hocko wrote:
> >
> > Quoting from Documentation/vm/highmem.txt:
> > "
> > The general recommendation is that you don't use more than 8GiB on a
> > 32-bit machine - although more might work for you and your workload,
> > you're pretty much on your own - don't expect kernel developers to
> > really care much if things come apart.
> > "
> >
>
> Still, I suspect the failure to cap the memory space... it still
> *should* at least limp along. But yes, at some point the wheels really
> will just come off the bus.
>
> Does specifying a kernel"mem=" option (thereby capping the memory
> artificially) work?

FYI Windows when set to 3G/1G VA split with PAE enabled caps to 16GB of RAM.
Yuhong Bao --
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/