[LinuxBIOS] Cache As Ram
rminnich at gmail.com
Thu Oct 26 22:14:32 CEST 2006
On 10/26/06, Tom Sylla <tsylla at gmail.com> wrote:
> Please refer to Chapter 10 "Memory Cache Control" in the Intel manual
> you mentioned. Find the Table called "Cache Operating Modes" (Table
> 10-5 in current version). The way it works is described well in that
> table. For CD=1, "Read hits access the cache; read misses do not cause
> replacement." and "Write hits update the cache". So that means
> anything that is a "hit" acts just like RAM. Nothing too fancy. You
> just have to make sure that the area you want to "hit" gets pre-loaded
> before you turn the cache back off again.
this is the 'can you read carefully' test that I flunked. It is obvious once
you read it, except I missed it for
5 years :-) Once Eswar pointed it out it was obvious.
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