From 08a859927e0c62e9a03a75f508baa6cbfbbef3c9 Mon Sep 17 00:00:00 2001 From: Yohei Kojima Date: Fri, 22 May 2026 09:15:58 +0900 Subject: [PATCH] cpufreq: intel_pstate: Improve warning message on HWP-disabled hybrid CPUs Improve warning message on HWP-disabled hybrid processors to state that intel_pstate requires HWP to be enabled on such processors [1]. Previously it warned that "intel_pstate: CPU model not supported", but it was misleading. Link: https://docs.kernel.org/admin-guide/pm/intel_pstate.html [1] Signed-off-by: Yohei Kojima [ rjw: Changelog tweaks ] Link: https://patch.msgid.link/87f69971a9bf89fb4b51f128e8ae519cbaf5894e.1779406085.git.yohei.kojima@sony.com Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 0fbbdbd5765c..8dc22a65e025 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -3826,6 +3826,12 @@ static int __init intel_pstate_init(void) if (no_load) return -ENODEV; + id = x86_match_cpu(intel_hybrid_scaling_factor); + if (id) { + pr_info("HWP-disabled hybrid CPU is not supported\n"); + return -ENODEV; + } + id = x86_match_cpu(intel_pstate_cpu_ids); if (!id) { pr_info("CPU model not supported\n");