https://bugzilla.kernel.org/show_bug.cgi?id=15886





--- Comment #10 from Len Brown <[email protected]>  2010-07-22 21:08:29 ---

The BWG says:

if a device can't tolerate the latency then...
"report this C-state with the BM_STS avoidance bit set".

I thought they were referring to enabling BM_STS in the chipset.
I didn't realize that they were referring to FFH.GAS.access_size.

So I think our policy should be for FADT and _CST IOspace C3,
to continue checking BM_STS.

For _CST FFH Intel C3, check BM_STS only if this bit is set.

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