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x86: prevent C-states hang on AMD C1E enabled machines
authorThomas Gleixner <tglx@linutronix.de>
Mon, 22 Sep 2008 17:02:25 +0000 (19:02 +0200)
committerThomas Gleixner <tglx@linutronix.de>
Tue, 23 Sep 2008 09:38:53 +0000 (11:38 +0200)
Impact: System hang when AMD C1E machines switch into C2/C3

AMD C1E enabled systems do not work with normal ACPI C-states
even if the BIOS is advertising them. Limit the C-states to
C1 for the ACPI processor idle code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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