On 11/05/2014 09:14 PM, tiger...@via-alliance.com wrote:
> Hi, experts:
>
> I am studying IA32/X64 Programmer manual.
>
> There is a sentence(Volume-3A, 10.11.5 Section):
>
> On a hardware reset, the P6 and more recent processors clear the valid
> flags in variable-range MTRRs and
>
> clear the E flag in the IA32_MTRR_DEF_TYPE MSR to disable
>
> all MTRRs. All other bits in the MTRRs are undefined.
>
> So, how about FE bit in IA32_MTRR_DEF_TYPE MSR?
>
> Is it also be cleared on a hardware reset?
I believe so.
--
Brian
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