diff options
| -rw-r--r-- | src/cpu/intel/haswell/haswell_init.c | 5 |
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); |