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(parent: 83a7eef) | patch
x86/cpufeatures: Add AMD FAST CPPC feature flag
authorPerry Yuan <perry.yuan@amd.com>
Sat, 25 May 2024 15:08:43 +0000 (23:08 +0800)
committerMario Limonciello <mario.limonciello@amd.com>
Tue, 11 Jun 2024 21:12:12 +0000 (16:12 -0500)
commitc7107750b2ffaa4950faa53f84f9c9aa2caac89a
treed861794d844e56f21afa415ef7edee3cf6066040tree | snapshot
parent83a7eefedc9b56fe7bfeff13b6c7356688ffa670commit | diff
x86/cpufeatures: Add AMD FAST CPPC feature flag

Some AMD Zen 4 processors support a new feature FAST CPPC which
allows for a faster CPPC loop due to internal architectural
enhancements. The goal of this faster loop is higher performance
at the same power consumption.

Reference:
See the page 99 of PPR for AMD Family 19h Model 61h rev.B1, docID 56713

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
arch/x86/include/asm/cpufeatures.h diff | blob | history
arch/x86/kernel/cpu/scattered.c diff | blob | history
https://github.com/torvalds/linux.git