Jan Beulich
2008-Sep-08 12:55 UTC
[Xen-devel] [PATCH] xen/powernow: allow using lowest-power P-state
The MSR field used here indicates the highest numbered valid P-state,
not the first invalid one.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Index: 2008-09-01/xen/arch/x86/acpi/cpufreq/powernow.c
==================================================================---
2008-09-01.orig/xen/arch/x86/acpi/cpufreq/powernow.c 2008-07-18
16:19:34.000000000 +0200
+++ 2008-09-01/xen/arch/x86/acpi/cpufreq/powernow.c 2008-09-08
14:46:12.000000000 +0200
@@ -197,8 +197,8 @@ static int powernow_cpufreq_cpu_init(str
data->max_freq = perf->states[0].core_frequency * 1000;
/* table init */
- for (i=0; i<perf->state_count && i<max_hw_pstate; i++) {
- if (i>0 && perf->states[i].core_frequency >+ for (i
= 0; i < perf->state_count && i <= max_hw_pstate; i++) {
+ if (i > 0 && perf->states[i].core_frequency >
data->freq_table[valid_states-1].frequency / 1000)
continue;
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