ACPI: CPPC: Check present CPUs for determining _CPC is valid
mainline inclusion from mainline-v5.16-rc8 commit 2aeca6bd category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I7C2TX CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2aeca6bd02776d7f56a49a32be0dd184f204d888 ---------------------------------------------------------------------- As this is a static check, it should be based upon what is currently present on the system. This makes probeing more deterministic. While local APIC flags field (lapic_flags) of cpu core in MADT table is 0, then the cpu core won't be enabled. In this case, _CPC won't be found in this core, and return back to _CPC invalid with walking through possible cpus (include disable cpus). This is not expected, so switch to check present CPUs instead. Reported-by:Jinzhou Su <Jinzhou.Su@amd.com> Signed-off-by:
Mario Limonciello <mario.limonciello@amd.com> Signed-off-by:
Huang Rui <ray.huang@amd.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
Jie Liu <liujie375@h-partners.com>
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