[coreboot] Exception on Skylake after enabling ACPI timer emulation

[Banik, Subrata]

Please find my answer inline.

Thanks,
Subrata


-----Original Message-----
From: Piotr Król [mailto:piotr.krol at 3mdeb.com] 
Sent: Thursday, May 17, 2018 5:38 PM
To: Banik, Subrata <subrata.banik at intel.com>
Cc: coreboot at coreboot.org
Subject: Re: Exception on Skylake after enabling ACPI timer emulation

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On 05/17/2018 01:51 PM, Banik, Subrata wrote:
> Piotr Król,

Hi Subrata,

> 
> I have submitted a patch today to overcome some AP timeout issue.
> 
> https://review.coreboot.org/#/c/coreboot/+/26286/
> 
> Can you please pick this, and see if you are still seeing timeout 
> issue or not.

Patch doesn't change anything. I'm very interested in debugging this just let me know how I can help move this forward. If you think I should play with that timings or check other patches please let me know.

[Subrata] this specific issue, we haven't seen on any KBL/SKL system we have. I can double confirm this value tomorrow. 
For now, please try to check if increasing timeout is helping or not?
Btw, Can you please send me a complete serial log for my analysis. 

> I would also interested to know about the number of core you have on 
> your system. I believe timeout count somehow not meeting the max core 
> running time.

This is 2 core system, if I read specs correctly. Detailed id by coreboo
t:

CPU: Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz
CPU: ID 406e3, Skylake D0, ucode: 00000000
CPU: AES supported, TXT NOT supported, VT supported
MCH: device id 1904 (rev 08) is Skylake-U
PCH: device id 9d48 (rev 21) is Skylake-U Premium
IGD: device id 1916 (rev 07) is Skylake ULT GT2

Best Regards,
- --
Piotr Król
Embedded Systems Consultant
https://3mdeb.com | @3mdeb_com
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