Comment # 52 on bug 1185513 from Joey Lee

Hi Anthony, 

Thanks for your testing.

(In reply to Anthony Agelastos from comment #50)
> (In reply to Joey Lee from comment #48)
[...snip]
> > Let's test and confirm the 719e1f561afbe patch is the root cause. Then we
> > ping upstream experts.
> 
> Greetings:
> 
> I installed the kernel and attached its dmesg output to this ticket. I was
> not able to boot the system graphically (it stopped at the console login). I

hm... There have other problem for graphic. Please switch back to your old
kernel. 

> didn't see any of the errors we saw before (but please double check me).
> This seems to indicate that you have correctly identified the problem.
> Please let me know if you have any questions, comments, or concerns.
> Additionally, please let me know how to proceed once you discuss things with
> upstream. Thank you for your help with this. 

Yes, your testing confirmed that the Cpu0Hwp and HwpLvt tables be loaded after
reverted 719e1f561a patch. Now the "Dynamic OEM Table Load" logs of modified
v5.12 are the same with v5.11 :

[    0.170109] ACPI: Dynamic OEM Table Load:
[    0.170115] ACPI: SSDT 0xFFFF8C50DC8E1800 00077A (v02 PmRef  Cpu0Ist 
00003000 INTL 20160422)
[    0.171104] ACPI: \_PR_.PR00: _OSC native thermal LVT Acked
[    0.172348] ACPI: Dynamic OEM Table Load:
[    0.172352] ACPI: SSDT 0xFFFF8C50DC8EF400 0003FF (v02 PmRef  Cpu0Cst 
00003001 INTL 20160422)
[    0.173248] ACPI: Dynamic OEM Table Load:
[    0.173251] ACPI: SSDT 0xFFFF8C4A014043C0 0000BA (v02 PmRef  Cpu0Hwp 
00003000 INTL 20160422)        <-- be loaded after revert 719e1f561a patch
[    0.174075] ACPI: Dynamic OEM Table Load:
[    0.174078] ACPI: SSDT 0xFFFF8C50DC8E5800 000628 (v02 PmRef  HwpLvt  
00003000 INTL 20160422)        <-- be loaded after revert 719e1f561a patch
[    0.175200] ACPI: Dynamic OEM Table Load:
[    0.175206] ACPI: SSDT 0xFFFF8C4A00D20000 000D14 (v02 PmRef  ApIst   
00003000 INTL 20160422)
[    0.176671] ACPI: Dynamic OEM Table Load:
[    0.176674] ACPI: SSDT 0xFFFF8C50DC8E8000 000317 (v02 PmRef  ApHwp   
00003000 INTL 20160422)
[    0.177585] ACPI: Dynamic OEM Table Load:
[    0.177589] ACPI: SSDT 0xFFFF8C50DC8EE000 00030A (v02 PmRef  ApCst   
00003000 INTL 20160422)

I will looking at what's the impact of _CPC and also ping kernel upstream
experts.

Thanks