Linux 6.8 Picks Up AMD CPU Optimization To Avoid Unnecessarily Serializing MSR Accesses

[phoronix]

Phoronix: Linux 6.8 Picks Up AMD CPU Optimization To Avoid Unnecessarily Serializing MSR Accesses

The x86 CPU pull request is ready for the Linux 6.8 kernel and besides adding new AMD Zen feature flags easily isolating different CPU generations, there is also an AMD CPU optimization to avoid an unnecessary MFENCE+LFENCE barrier...

https://www.phoronix.com/news/Linux-6.8-AMD-Optimization-CPU

[dimko]

cant wait till 6.8 at this stage + mesa 24

[discordian]

and any chance this improvement will show up anywhere? reading/writing MSRs is not something you casually do.

and no, RDTSC for timing/timestamps is not related.

[cj.wijtmans]

and any chance this improvement will show up anywhere? reading/writing MSRs is not something you casually do.

and no, RDTSC for timing/timestamps is not related.

Virtualization performance is better. Most likely some gpu driver performance too.