[LinuxBIOS] Cache As Ram

[Tom Sylla]

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.

On 10/26/06, Jiangbo W <jiangbo.w at gmail.com> wrote:
> VIA C3, it is compatible with X86, but only have 128K L2 cache. In Intel
> Manual Volume 3, i can not find anything about cache as rom
>
>
>
> On 10/26/06, yhlu <yinghailu at gmail.com> wrote:
> > what is your CPU?
> >
> > YH
> >
> > On 10/26/06, Jiangbo W <jiangbo.w at gmail.com > wrote:
> > > Hi,
> > >
> > > When using cache as ram how can i ensure that the data in cache can not
> be
> > > swapped out?
> > >
> > > Regards
> > >
> > > Jiangbo.W
> > > --
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> > >
> > >
> >
>
>
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