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Groups > linux.kernel > #1356892
| From | "Brown, Len" <len.brown@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | RE: C1E auto-promotion suspend/resume |
| Date | 2016-03-14 05:40 +0100 |
| Message-ID | <rcssq-7f5-9@gated-at.bofh.it> (permalink) |
| References | <rcpEe-5dH-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
> By BIOS (1.2.3 on a Dell XPS 13 9350) seems to want to enable C1E > auto-promotion (ugh!), which results in this difference across > suspend/resume according to turbostat: > > -cpu3: MSR_IA32_POWER_CTL: 0x0024005d (C1E auto-promotion: DISabled) > +cpu3: MSR_IA32_POWER_CTL: 0x0024005f (C1E auto-promotion: ENabled) > > Should intel_idle learn to re-disable idle promotion on resume? Yes, it seems that way. Go ahead and send a patch, or file a bug at bugzilla.kernel.org and we'll get to it. thanks, -len
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C1E auto-promotion suspend/resume Andy Lutomirski <luto@amacapital.net> - 2016-03-14 02:40 +0100
RE: C1E auto-promotion suspend/resume "Brown, Len" <len.brown@intel.com> - 2016-03-14 05:40 +0100
[PATCH 0/4] intel_idle: Improve MSR fixup resume handling Andy Lutomirski <luto@kernel.org> - 2016-03-14 05:50 +0100
[PATCH 3/4] intel_idle: Fix MSRs after resume Andy Lutomirski <luto@kernel.org> - 2016-03-14 05:50 +0100
[PATCH 4/4] intel_idle: Move BYT/CHT auto-demotion fixup into fix_this_cpu Andy Lutomirski <luto@kernel.org> - 2016-03-14 05:50 +0100
[PATCH 1/4] intel_idle: Consolidate auto-promotion/auto-demotion fixups Andy Lutomirski <luto@kernel.org> - 2016-03-14 05:50 +0100
[PATCH 2/4] intel_idle: Remove a broadcast MSR fixup at boot Andy Lutomirski <luto@kernel.org> - 2016-03-14 05:50 +0100
Re: C1E auto-promotion suspend/resume Andy Lutomirski <luto@amacapital.net> - 2016-03-14 06:30 +0100
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