| Date | Thu, 15 Feb 2024 21:54:56 +0530 | Subject | Re: [patch V6 00/19] x86/cpu: Rework topology evaluation | From | K Prateek Nayak <> |
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Hello Thomas,
On 2/14/2024 2:33 AM, Thomas Gleixner wrote: > This is a follow up on V5 of this work: > > https://lore.kernel.org/all/20240117115752.863482697@linutronix.de > > and contains only the not yet applied part which reworks the CPUID > parsing. This is also preparatory work for the general overhaul of APIC ID > enumeration and management. > > Changes vs. V5: > > - Fix the AMD leaf 0x8000008 parsing > - Update to generated CPUID leaf structures > - Address review comments (coding style, comments, changelogs, boot_cpu_has()) > > This applies on Linus tree and is available from git: > > git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git topo-cpuid-v6
Tested the above tree comparing the values reported by "/sys/kernel/debug/x86/topo/cpus/X" and "/sys/devices/system/cpu/cpuX/topology/*" with those reported by v6.8-rc4 on the following systems:
- Dual socket 3rd Generation EPYC System (2 x 64C/128T) - Single socket 4th Generation EPYC System (1 x 96C/192T) - Dual socket 4th Generation EPYC System (2 x 128C/256T)
Happy to report the values from the sysfs and debugfs with the series are consistent with values on v6.8-rc4. "amd_node_id" and "amd_nodes_per_pkg" introduced with the series are consistent with the values reported in CPUID leaf 0x8000001E ECX on the respective system.
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
> > [..snip..] >
-- Thanks and Regards, Prateek
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