Re: [coreboot] FW: Two test result(linux+2G-RAM>10minutes andinstall ubuntu8.10) of vx800 patch

[Carl-Daniel Hailfinger]

On 06.02.2009 02:52, ron minnich wrote:
> On Thu, Feb 5, 2009 at 5:43 PM,   wrote:
> > I ask my colleague who work for EFI. He said in his EFI project, SMM
> > area should not be cached,  and he had tried to cache that area, but
> > cause system crashed.
> > I don't know if he is right, since I can not find any reason why SMM
> > area should not be cached.
>
> Stepan can tell us, since he has working smm on kontron, but I can not
> believe smm can not be cached.

Maybe if you have SMM memory hoisted to the same place as other memory.
In that case, the CPU may get confused and accidentially write SMM
memory contents to the normal RAM or video RAM at the same location.

Regards,
Carl-Daniel