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acpi-cpufreq: Honor _PSD table setting on new AMD CPUs
commit5368512abe
upstream. acpi-cpufreq has a old quirk that overrides the _PSD table supplied by BIOS on AMD CPUs. However the _PSD table of new AMD CPUs (Family 19h+) now accurately reports the P-state dependency of CPU cores. Hence this quirk needs to be fixed in order to support new CPUs' frequency control. Fixes:acd3162482
("acpi-cpufreq: Add quirk to disable _PSD usage on all AMD CPUs") Signed-off-by: Wei Huang <wei.huang2@amd.com> [ rjw: Subject edit ] Cc: 3.10+ <stable@vger.kernel.org> # 3.10+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 2 additions and 1 deletions
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@ -688,7 +688,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
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cpumask_copy(policy->cpus, topology_core_cpumask(cpu));
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}
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if (check_amd_hwpstate_cpu(cpu) && !acpi_pstate_strict) {
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if (check_amd_hwpstate_cpu(cpu) && boot_cpu_data.x86 < 0x19 &&
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!acpi_pstate_strict) {
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cpumask_clear(policy->cpus);
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cpumask_set_cpu(cpu, policy->cpus);
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cpumask_copy(data->freqdomain_cpus,
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