Mario Limonciello b79276dcac ACPI: processor: Move arch_init_invariance_cppc() call later ... arch_init_invariance_cppc() is called at the end of acpi_cppc_processor_probe() in order to configure frequency invariance based upon the values from _CPC. This however doesn't work on AMD CPPC shared memory designs that have AMD preferred cores enabled because _CPC needs to be analyzed from all cores to judge if preferred cores are enabled. This issue manifests to users as a warning since commit 21fb59ab4b ("ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn"): ``` Could not retrieve highest performance (-19) ``` However the warning isn't the cause of this, it was actually commit 279f838a61 ("x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator()") which exposed the issue. To fix this problem, change arch_init_invariance_cppc() into a new weak symbol that is called at the end of acpi_processor_driver_init(). Each architecture that supports it can declare the symbol to override the weak one. Define it for x86, in arch/x86/kernel/acpi/cppc.c, and for all of the architectures using the generic arch_topology.c code. Fixes: 279f838a61 ("x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator()") Reported-by: Ivan Shapovalov <intelfx@intelfx.name> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219431 Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://patch.msgid.link/20241104222855.3959267-1-superm1@kernel.org [ rjw: Changelog edit ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2024-11-06 21:31:36 +01:00
..
apei.c
boot.c	xen: allow mapping ACPI data using a different physical address	2024-09-12 08:25:07 +02:00
cppc.c	ACPI: processor: Move arch_init_invariance_cppc() call later	2024-11-06 21:31:36 +01:00
cstate.c	cpuidle: ACPI/intel: fix MWAIT hint target C-state computation	2024-03-05 21:25:18 +01:00
madt_playdead.S	x86/acpi: Add support for CPU offlining for ACPI MADT wakeup method	2024-06-17 17:46:25 +02:00
madt_wakeup.c	x86/acpi: Remove __ro_after_init from acpi_mp_wake_mailbox	2024-08-07 20:04:38 +02:00
Makefile	x86/acpi: Add support for CPU offlining for ACPI MADT wakeup method	2024-06-17 17:46:25 +02:00
sleep.c
sleep.h
wakeup_32.S
wakeup_64.S	x86/acpi: Use %rip-relative addressing in wakeup_64.S	2023-11-30 20:09:49 +01:00