[coreboot] Minimum RAM requirements for coreboot (under Qemu)

Myles Watson mylesgw at gmail.com
Mon May 18 18:18:15 CEST 2009

On Mon, May 18, 2009 at 9:51 AM, ron minnich <rminnich at gmail.com> wrote:
> On Mon, May 18, 2009 at 8:33 AM, Myles Watson <mylesgw at gmail.com> wrote:
>>> The problem is that we're going to need a way to *not* hardcode it. 4M
>>> is too low because some payloads will run right over it.
>> I thought it was OK for payloads to run over coreboot.  We don't load them
>> until we're done.  Right?  What am I missing?
> it's not ok to over-run the stack while loading the payload :-)

>> Shouldn't this cause problems with the way we write mptables?  If the
>> mptable is too big this would write it over our stack, then zero it back
>> out.  My pending patch corrects this, but I didn't know it was an issue.
> page 0 is getting crowded then.
> page 0 is used in vm86 for IDT and stack.
> It may be time to make a map. I did a map long ago, but changing
> circumstances have rendered it obsolete.
> ron

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