Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
processor type
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Kernel & Hardware
View previous topic :: View next topic  
Author Message
papas
Tux's lil' helper
Tux's lil' helper


Joined: 01 Dec 2014
Posts: 88
Location: Athens

PostPosted: Sat Feb 23, 2019 7:41 pm    Post subject: processor type Reply with quote

Hello guys,
during the last kernel upgrade (4.20.12, syncconfig) required the processor type, i have 8700k but there is no coffeelake family, should i choose the skylake or generic x84_64?
thank you.
Back to top
View user's profile Send private message
The Doctor
Moderator
Moderator


Joined: 27 Jul 2010
Posts: 2600

PostPosted: Sat Feb 23, 2019 9:24 pm    Post subject: Reply with quote

The question is about what optimization instructions to use and those are added, not removed.

Maybe they added skylake since my kernel, 4.14.83-gentoo, but my i7 uses Core 2/newer Xeon. You won't hurt yourself going to an older version and even the generic is fairly optimized given how recent the platform is. The only way to really mess up is to select the wrong base processor, ie AMD's instructions instead of Intel's or the wrong set of Intel.

If they added skylake it should be safe for coffeelake. If not you will know soon enough. Always a good idea to keep the old kernel handy in case the new one is so feature rich that it had to exclude booting.
_________________
First things first, but not necessarily in that order.

Apologies if I take a while to respond. I'm currently working on the dematerialization circuit for my blue box.
Back to top
View user's profile Send private message
Jaglover
Watchman
Watchman


Joined: 29 May 2005
Posts: 7328
Location: Saint Amant, Acadiana

PostPosted: Sat Feb 23, 2019 9:32 pm    Post subject: Reply with quote

With USE=experimental you can choose -march=native.

Edit: This applies to gentoo-sources.
_________________
Please learn how to denote units correctly!


Last edited by Jaglover on Sat Feb 23, 2019 9:46 pm; edited 1 time in total
Back to top
View user's profile Send private message
mike155
Veteran
Veteran


Joined: 17 Sep 2010
Posts: 1718
Location: Frankfurt, Germany

PostPosted: Sat Feb 23, 2019 9:37 pm    Post subject: Reply with quote

Interesting... I just downloaded vanilla kernel 5.0.0-rc7, but there's no option 'Skylake' in 'make menuconfig':
Code:
┌────────────────────── Processor family ───────────────────────┐
│  Use the arrow keys to navigate this window or press the      │ 
│  hotkey of the item you wish to select followed by the <SPACE │ 
│  BAR>. Press <?> for additional information about this        │ 
│ ┌───────────────────────────────────────────────────────────┐ │ 
│ │         ( ) Opteron/Athlon64/Hammer/K8                    │ │ 
│ │         ( ) Intel P4 / older Netburst based Xeon          │ │ 
│ │         (X) Core 2/newer Xeon                             │ │ 
│ │         ( ) Intel Atom                                    │ │ 
│ │         ( ) Generic-x86-64                                │ │ 
│ └───────────────────────────────────────────────────────────┘ │ 
├───────────────────────────────────────────────────────────────┤ 
│                    <Select>      < Help >                     │ 
└───────────────────────────────────────────────────────────────┘
Back to top
View user's profile Send private message
papas
Tux's lil' helper
Tux's lil' helper


Joined: 01 Dec 2014
Posts: 88
Location: Athens

PostPosted: Sun Feb 24, 2019 6:53 am    Post subject: Reply with quote

Quote:
Always a good idea to keep the old kernel handy in case the new one is so feature rich that it had to exclude booting.

That's exactly what i did, finally i chose skylake, and everything went well.

Quote:
Interesting... I just downloaded vanilla kernel 5.0.0-rc7, but there's no option 'Skylake' in 'make menuconfig':

As jaglover wrote you need gentoo-sources and the experimental flag.
Thank you guys.
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Kernel & Hardware All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum