diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2017-02-06 18:01:51 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-02-07 13:34:56 +0100 |
| commit | febf2407418a2d6c042fcd77b206040449cb9a70 (patch) | |
| tree | 80c6060b05f30c5424385e21b8abfa3a7361240f /drivers | |
| parent | Linux 4.10-rc7 (diff) | |
| download | linux-febf2407418a2d6c042fcd77b206040449cb9a70.tar.xz linux-febf2407418a2d6c042fcd77b206040449cb9a70.zip | |
x86/ACPI: keep x86_cpu_to_acpiid mapping valid on CPU hotplug
We may or may not have all possible CPUs in MADT on boot but in any
case we're overwriting x86_cpu_to_acpiid mapping with U32_MAX when
acpi_register_lapic() is called again on the CPU hotplug path:
acpi_processor_hotadd_init()
-> acpi_map_cpu()
-> acpi_register_lapic()
As we have the required acpi_id information in acpi_processor_hotadd_init()
propagate it to acpi_map_cpu() to always keep x86_cpu_to_acpiid
mapping valid.
Reported-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/acpi_processor.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 3de3b6b8f0f1..4467a8089ab8 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -165,7 +165,7 @@ static int acpi_processor_errata(void) #ifdef CONFIG_ACPI_HOTPLUG_CPU int __weak acpi_map_cpu(acpi_handle handle, - phys_cpuid_t physid, int *pcpu) + phys_cpuid_t physid, u32 acpi_id, int *pcpu) { return -ENODEV; } @@ -203,7 +203,7 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr) cpu_maps_update_begin(); cpu_hotplug_begin(); - ret = acpi_map_cpu(pr->handle, pr->phys_id, &pr->id); + ret = acpi_map_cpu(pr->handle, pr->phys_id, pr->acpi_id, &pr->id); if (ret) goto out; |