On Thu, 2004-06-24 at 12:33, Tony Cheng wrote:
It's great to hear that AMD CPU allow software to access Cache, it's absolutely not allowed in the Intel CPU which I just finish working on.
I guess you must turned off cache completely and CPUs are not prefetching, snooping and ete. before you use it as memory, right? I'm not that knowledgable at this point with AMD Opteron. but this is pretty intrigueing. I will try it someday, I hope AMD supports this type of use. In another word, AMD will not scew up the cache data software saved at the background and SW saving data to it doesn't impact CPU function.
I'm really try to ask you about another question, you have mentioned the AMD Serenade Mainboard, Do you have the LinuxBIOS source code for this AMD Serenade Mainboard? I couldn't find it in the Sorceforge CVS. (Only AMD Solo and Quatet are available there)
The AMD Serenade board support for ROMCC LinuxBIOS is in the CVS. Please do a "cvs update -dP". The cache as ram version is not committed yet.
Ollie