AMD i have tried c0 and Ex. On 6/20/05, Eric W. Biederman <[email protected]> wrote: > yhlu <[EMAIL PROTECTED]> writes: > > > So we must make cache_as_ram work on other 86 platform besides amd cpu... > > It is a good idea and for new cpus it is probably an option. > For people in the embedded space we still need romcc. > > > Is there any intel public doc about using cache_as_ram? > > I have not seen any yet which is a puzzle. For the first round > of Intel cpus that supported it you had to load a microcode update, > before it would work. I have yet to see if AMD's flavor will work > on k8 revisions B3, C0, CG, Ex. I expect it will but I have been > burnt too many times. > > > I have tried amd cache_as_ram in intel platform, it seem if access > > some position several times, the contents of that address will become > > to 0xff.... > > Exactly the problem. If you aren't using a supported flavor of cache > as ram it fails more often and in less predictable ways than romcc. > That is why I avoid it unless the manufacturer supports it. And that > is why we cannot decompress and run code out of the cache. > > Eric >
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