Created attachment 136513 [details] kern_log_snb_ff We keep getting this messages on dmesg while running IGT: [ 224.416285] Setting dangerous option reset - tainting kernel [ 229.012298] intel_pstate: Turbo disabled by BIOS or unavailable on processor CPU is Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz (family: 0x6, model: 0x2a, stepping: 0x7). I already confirmed that the Turbo boost option is enable on BIOS, also enable CONFIG_INTEL_TURBO_MAX_3=y on kernel config, since I found this parameter on a CI config shared on other bug, and the warn keeps appearing. SUCCESS tests with the warn from today's commit: IGT-Version: 1.20-gd86d53b (x86_64) (Linux: 4.15.0-rc5-drm-tip-config-intel-turbo-ww1-commit-16432d3+ x86_64) igt@gem_exec_nop@basic-series igt@gem_exec_flush@basic-wb-rw-before-default igt@gem_exec_flush@basic-wb-ro-default
+ igt@gem_exec_flush@basic-wb-rw-default commit-cb4a985+
igt@gem_exec_flush@basic-wb-set-default, commit-eb3dae3+ igt@gem_exec_nop@basic-series, commit-eb3dae3+
This is not a bug, drivers/cpufreq/intel_pstate.c is loudly reporting that it has no "turbo" (marginal overclock) frequencies. It is not even igt that is writing to /sys/devices/system/cpu/intel_pstate/no_turbo that triggers the warning. Look carefully at your own system; and file a bug against intel_pstate if you find the warning obnoxious, after all it is triggered by userspace and an error is reported already.
On it, thanks for the clarification.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.