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SubjectRe: [PATCH] ACPI: idle: fix init-time TSC check regression
On Thursday 14 May 2009, Len Brown wrote:
> From: Len Brown <>
> A previous 2.6.30 patch, a71e4917dc0ebbcb5a0ecb7ca3486643c1c9a6e2,
> (ACPI: idle: mark_tsc_unstable() at init-time, not run-time)
> erroneously disabled the TSC on systems that did not actually
> have valid deep C-states.
> Move the check after the deep-C-states are validated,
> via new helper, tsc_check_state(), hich replaces tsc_halts_in_c().
> Signed-off-by: Len Brown <>
> Acked-by: Venkatesh Pallipadi <>

OK on both my desktop (which had the regression) and laptop.

Tested-by: Frans Pop <>

(Tested together with the 2 patches you sent later.)


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