[AMD Official Use Only - General]
Hi : Thanks. I will check this issue and fix it as soon as possible.
-----Original Message----- From: Lucas Lee Jing Yi lucasleeeeeeeee@gmail.com Sent: Monday, February 19, 2024 12:11 AM To: rafael@kernel.org Cc: Yuan, Perry Perry.Yuan@amd.com; Du, Xiaojian Xiaojian.Du@amd.com; Deucher, Alexander Alexander.Deucher@amd.com; bp@alien8.de; Sharma, Deepak Deepak.Sharma@amd.com; Meng, Li (Jassmine) Li.Meng@amd.com; linux-acpi@vger.kernel.org; linux-kernel@vger.kernel.org; linux- kselftest@vger.kernel.org; linux-pm@vger.kernel.org; Limonciello, Mario Mario.Limonciello@amd.com; Fontenot, Nathan Nathan.Fontenot@amd.com; oleksandr@natalenko.name; rafael.j.wysocki@intel.com; Huang, Ray Ray.Huang@amd.com; Huang, Shimmer Shimmer.Huang@amd.com; skhan@linuxfoundation.org; viresh.kumar@linaro.org; x86@kernel.org Subject: Re: [PATCH V14 0/7] amd-pstate preferred core
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Dear all, I have found an issue with the patchset when applying on 6.7, leading to a large degradation in performance.
On my 7840HS on *STOCK* 6.7 highest_perf is reported as 196, not 166 as assumed in the patchset. Applying the patchset causes highest_perf to be misreported and hence a misreported maximum frequency as well, at 4.35GHz instead of 5.14GHz, leading to the degradation in performance. However, On my 5950X, highest_perf is indeed reported as 166 before and after applying the patchset.
Hence, I propose the following patch (should be attached).
I do apologize for any mistakes as I am new to this and this is my first email on the mailing list.
Cheers! Lucas