tree 9540f55fd2beb716a5dda0146e3e742c5a48e380
parent 27ce4cb4a0c7cf59b9a9952266883862f2e4c99f
author Thomas Gleixner <tglx@linutronix.de> 1222102945 +0200
committer Thomas Gleixner <tglx@linutronix.de> 1222162733 +0200

x86: prevent C-states hang on AMD C1E enabled machines

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>