CVS commit: src/usr.sbin/cpuctl/arch

["Andrius Varanavicius" <andvar%netbsd.org@localhost>]

Module Name:    src
Committed By:   andvar
Date:           Tue Aug 25 22:14:26 UTC 2026

Modified Files:
        src/usr.sbin/cpuctl/arch: i386.c

Log Message:
cpuctl(8): decode L2 cache associativity for VIA CPUs using the AMD cache lookup
table for the 0x80000006 CPUID function associativity value.

Use `cpuid leaf 4' to get cache parameters for Zhaoxin and late VIA CPU models.

Mirrors the changes from identcpu.c rev. 1.142.

Additionally, use via_cpu_probe() and via_cpu_cacheinfo() for CPUVENDOR_IDT
family > 6 CPUs to identify Zhaoxin CPUs and their features.
Also, print feature 5-7 bits for CPUVENDOR_IDT, which appear to be compatible
with Intel.

Use vendorname = "Zhaoxin" for family 7 models.

Tested on various 32-bit and 64-bit VIA and Zhaoxin CPUs
(Samuel 2 / Nehemiah, Esther (32-bit), multiple Nano models, and KX-U6580/7000).

PR kern/60619

pullups needed to netbsd-11 and netbsd-10.


To generate a diff of this commit:
cvs rdiff -u -r1.148 -r1.149 src/usr.sbin/cpuctl/arch/i386.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.