Linux 5.2 Optimization To Help With Unnecessary Cache Line Movements & TLB Misses

[phoronix]

Phoronix: Linux 5.2 Optimization To Help With Unnecessary Cache Line Movements & TLB Misses

VMware can be thanked for one of the performance optimizations coming with the upcoming Linux 5.2 kernel cycle...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-5.2-TLB-Info-Optimization

[Jumbotron]

Dang...5.2 is shaping up to be one of those point updates that punches above its weight. Looking forward to it!

[treba]

This does not affect 64 bit systems, right? Only 32bit?

[GreenReaper]

This does not affect 64 bit systems, right? Only 32bit?

I think it applies to both. The x86 architecture family has an instruction set which is largely shared between 32-bit and 64-bit - so a lot of the code can be, too. Where there are specific 32-bit (X86_32) or 64-bit (X86_64) features, they are specified for inclusion via the Kconfig and Makefiles in this and higher-level directories.

[treba]

I think it applies to both. The x86 architecture family has an instruction set which is largely shared between 32-bit and 64-bit - so a lot of the code can be, too. Where there are specific 32-bit (X86_32) or 64-bit (X86_64) features, they are specified for inclusion via the Kconfig and Makefiles in this and higher-level directories.

Ah cool, thanks for that info!

[nils_]

Dang...5.2 is shaping up to be one of those point updates that punches above its weight. Looking forward to it!

The versioning is arbitrary. 5.0 wasn't as big a step up from 4.20 because the holiday season coincided with the merge window, so there was less work done there.