[coreboot] Re: Extended IvyBridge CPU configuration

2020-06-20 Thread Evgeny Zinoviev via coreboot
Hi again. There's another patch that fits to the topic that you will 
probably want to try out: https://review.coreboot.org/c/coreboot/+/42547/


On 12/15/19 3:57 PM, Lars Hochstetter wrote:

Hi everyone,

I'm looking for an option to configure my Intel IvyBridge CPU (enable 
/ disable Hyperthreading, TurboBoost, set configurable TDP level etc.) 
using coreboot / nvramcui. My board is a Lenovo Thinkpad T430. So far, 
"only virtualization" is configurable and can not be enabled / 
disabled "in flight" but requires a rebuild of coreboot.


Is anyone currently working on something similar?

Is anything planned in that regard?

Kind regards

lhochstetter
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[coreboot] Re: Extended IvyBridge CPU configuration

2020-06-20 Thread Evgeny Zinoviev via coreboot

s/code/core/, lol.

On 6/20/20 2:46 PM, Evgeny Zinoviev via coreboot wrote:

Could be... Thanks for testing!

I've also put it on some of my daily work machines: a quad-code Ivy 
and a dual-code Sandy in order to see how it works in a real world... 
Works so far. So if it doesn't end up crashing in a week or two I'd 
say it's stable. We'll see.


On 6/20/20 1:42 PM, Lars Hochstetter wrote:

Update II:

All tests passed with and without HT enabled!

I discovered something curious though - if I disable HT memtest86+ 
finishes a pass in 45ish minutes. If I enable HT it takes 4+ hours.


I don't know if it's due to coreboot or memtest86+ as memtest86+ 
v5.01 also took around 4+ hours for all tests with HT enabled.


Maybe it is a bug with memtest86+ ?

On 19.06.20 00:58, Lars Hochstetter wrote:

Update: I managed to get memtest86+ v5.31b running.

I downloaded the .iso.zip and used geteltorito v0.6 to turn the .iso 
file into a 1.44meg floppy image. I then added the floppy image like 
the memtest86+ v5.01 floppy image to my coreboot image (4.12 + 
patchset 15).


Preliminary tests with memtest86+ v5.31b went without an issue 
(Note: I didn't run all the tests, but test #7 was passed with and 
without HT).


I'll try to run all tests with and without HT on 4.12 + patchset 15 
around the weekend.

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[coreboot] Re: Extended IvyBridge CPU configuration

2020-06-20 Thread Evgeny Zinoviev via coreboot

Could be... Thanks for testing!

I've also put it on some of my daily work machines: a quad-code Ivy and 
a dual-code Sandy in order to see how it works in a real world... Works 
so far. So if it doesn't end up crashing in a week or two I'd say it's 
stable. We'll see.


On 6/20/20 1:42 PM, Lars Hochstetter wrote:

Update II:

All tests passed with and without HT enabled!

I discovered something curious though - if I disable HT memtest86+ 
finishes a pass in 45ish minutes. If I enable HT it takes 4+ hours.


I don't know if it's due to coreboot or memtest86+ as memtest86+ v5.01 
also took around 4+ hours for all tests with HT enabled.


Maybe it is a bug with memtest86+ ?

On 19.06.20 00:58, Lars Hochstetter wrote:

Update: I managed to get memtest86+ v5.31b running.

I downloaded the .iso.zip and used geteltorito v0.6 to turn the .iso 
file into a 1.44meg floppy image. I then added the floppy image like 
the memtest86+ v5.01 floppy image to my coreboot image (4.12 + 
patchset 15).


Preliminary tests with memtest86+ v5.31b went without an issue (Note: 
I didn't run all the tests, but test #7 was passed with and without HT).


I'll try to run all tests with and without HT on 4.12 + patchset 15 
around the weekend.

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[coreboot] Re: Extended IvyBridge CPU configuration

2020-06-20 Thread Lars Hochstetter

Update II:

All tests passed with and without HT enabled!

I discovered something curious though - if I disable HT memtest86+ 
finishes a pass in 45ish minutes. If I enable HT it takes 4+ hours.


I don't know if it's due to coreboot or memtest86+ as memtest86+ v5.01 
also took around 4+ hours for all tests with HT enabled.


Maybe it is a bug with memtest86+ ?

On 19.06.20 00:58, Lars Hochstetter wrote:

Update: I managed to get memtest86+ v5.31b running.

I downloaded the .iso.zip and used geteltorito v0.6 to turn the .iso 
file into a 1.44meg floppy image. I then added the floppy image like 
the memtest86+ v5.01 floppy image to my coreboot image (4.12 + 
patchset 15).


Preliminary tests with memtest86+ v5.31b went without an issue (Note: 
I didn't run all the tests, but test #7 was passed with and without HT).


I'll try to run all tests with and without HT on 4.12 + patchset 15 
around the weekend.

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