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XanMod Kernel

New releases are available for all flavours: https://xanmod.org
More information: https://forum.xanmod.org/thread-44.html
"(...) the grandest occasion the past or present has seen, or the future can hope to see." -- Cervantes.
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(30-01-2018, 02:28 PM)CybDex Wrote:
(30-01-2018, 01:59 PM)neoark Wrote: Also does xanmod support: https://kernelnewbies.org/Linux_4.15#Meltdown.2FSpectre
spectre_v2=off and pti=off in boot options?
I would think there is going to be a *-sec version of the 4.15 kernel aswell..

All XanMod flavours have become *-sec versions by default. Sleepy
"(...) the grandest occasion the past or present has seen, or the future can hope to see." -- Cervantes.
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(06-02-2018, 03:23 PM)tropic Wrote:
(30-01-2018, 02:28 PM)CybDex Wrote:
(30-01-2018, 01:59 PM)neoark Wrote: Also does xanmod support: https://kernelnewbies.org/Linux_4.15#Meltdown.2FSpectre
spectre_v2=off and pti=off in boot options?
I would think there is going to be a *-sec version of the 4.15 kernel aswell..

All XanMod flavours have become *-sec versions by default. Sleepy

Hmm.. this did not show in the changelog tho, but comparing the .config between 4.15.0-xanmod1 and 4.15.1-xanmod2, i get theese "sec" differences:
Code:
CONFIG_RETPOLINE=y
CONFIG_PAGE_TABLE_ISOLATION=y
And the following two dmesg lines:
Code:
Spectre V2 mitigation: Mitigation: Full generic retpoline
Kernel/User page tables isolation: enabled
So yes, Spectre + KPTI patches are NOW enabled on 4.15.1-xanmod2

Will do some tests to see how my crap old cruddy I7 likes this when doing stuff in wine Tongue

PS. Luckily the xanmod source compiles like a champ tho, so once again: Awesome work Smile
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(06-02-2018, 03:57 PM)CybDex Wrote: Will do some tests to see how my crap old cruddy I7 likes this when doing stuff in wine Tongue

PS. Luckily the xanmod source compiles like a champ tho, so once again: Awesome work Smile

Probably it will work very close to 'non-sec' builts imho. All benchmarking results are always welcome! Smile
"(...) the grandest occasion the past or present has seen, or the future can hope to see." -- Cervantes.
Reply

(06-02-2018, 05:25 PM)tropic Wrote: Probably it will work very close to 'non-sec' builts imho. All benchmarking results are always welcome! Smile
Well, the KPTI patch does lower some kernel I/O performance, but if it is "just by numbers" or not is up to each and everyone of us to decide i guess Smile

I compiled the kernel without the KPTI and Retpoline options, and while i was at it, i added march=native option. That means that it could ofc be the march=native change that added around 3% fps increase.

Might do a round of benchies eventually, but i suspect that wine might be a tad more prone to shit happening cos of the way things are handled there perhaps? Now that i found out how easy it was to compile xanmod from source, im perfectly happy to do that if i want to tweak those things myself, and agree that KPTI/Retpoline patches should definately be enabled by default on the "release" kernel Smile

Thumbs up! Smile
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(08-02-2018, 03:49 PM)CybDex Wrote:
(06-02-2018, 05:25 PM)tropic Wrote: Probably it will work very close to 'non-sec' builts imho. All benchmarking results are always welcome! Smile
Well, the KPTI patch does lower some kernel I/O performance, but if it is "just by numbers" or not is up to each and everyone of us to decide i guess Smile

I compiled the kernel without the KPTI and Retpoline options, and while i was at it, i added march=native option. That means that it could ofc be the march=native change that added around 3% fps increase.

Might do a round of benchies eventually, but i suspect that wine might be a tad more prone to shit happening cos of the way things are handled there perhaps? Now that i found out how easy it was to compile xanmod from source, im perfectly happy to do that if i want to tweak those things myself, and agree that KPTI/Retpoline patches should definately be enabled by default on the "release" kernel Smile

Thumbs up! Smile

Have you ever tested your Wine gaming experience under 1000Hz?  
Recently one user asked for it (for gaming too I suppose). 
https://forum.xanmod.org/thread-142-post...ml#pid2835
Thank you for your always good ideas and support! Smile
"(...) the grandest occasion the past or present has seen, or the future can hope to see." -- Cervantes.
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(09-02-2018, 02:15 PM)tropic Wrote: Have you ever tested your Wine gaming experience under 1000Hz?  
Recently one user asked for it (for gaming too I suppose). 
https://forum.xanmod.org/thread-142-post...ml#pid2835
Thank you for your always good ideas and support! Smile

I am actually doing that with my custom compile. I disabled the KPTI/Retpoline, changed to "march=native" compile option, and changed to 1000hz. Seems to be the smoothest that way tbh Smile
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(10-02-2018, 09:04 PM)CybDex Wrote:
(09-02-2018, 02:15 PM)tropic Wrote: Have you ever tested your Wine gaming experience under 1000Hz?  
Recently one user asked for it (for gaming too I suppose). 
https://forum.xanmod.org/thread-142-post...ml#pid2835
Thank you for your always good ideas and support! Smile

I am actually doing that with my custom compile. I disabled the KPTI/Retpoline, changed to "march=native" compile option, and changed to 1000hz. Seems to be the smoothest that way tbh Smile


Nice approach for gaming under Wine. Please maintain the feedback. Sleepy
"(...) the grandest occasion the past or present has seen, or the future can hope to see." -- Cervantes.
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New releases are available for all flavours: https://xanmod.org
More information: https://forum.xanmod.org/thread-44.html
"(...) the grandest occasion the past or present has seen, or the future can hope to see." -- Cervantes.
Reply



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