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-rw-r--r--src/cpu/intel/haswell/haswell_init.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c
index 071135c3f2..b2e6eaf324 100644
--- a/src/cpu/intel/haswell/haswell_init.c
+++ b/src/cpu/intel/haswell/haswell_init.c
@@ -426,10 +426,7 @@ static void configure_c_states(void)
msr.lo |= (1 << 26); // C1 Auto Demotion Enable
msr.lo |= (1 << 25); // C3 Auto Demotion Enable
msr.lo &= ~(1 << 10); // Disable IO MWAIT redirection
- msr.lo &= ~(0xf); // Clear deepest package c-state
- /* FIXME: The deepest package c-state is set to C0/C1 to work around
- * platform instability when package C3 or deeper c-states are used. */
- msr.lo |= 0; // Deepeset package c-state is C0/C1.
+ /* The deepest package c-state defaults to factory-configured value. */
wrmsr(MSR_PMG_CST_CONFIG_CONTROL, msr);
msr = rdmsr(MSR_PMG_IO_CAPTURE_BASE);