[Xen-devel] xen acpi cpufreq driver

[Tobias Geiger <tobias.geiger@xxxxxxxxx>]

Hi,

i'm not sure if i understood the new acpi xen cpufreq driver - here's the 
output when loading  xen_acpi_processor module in linux 3.4:

dom0 dmesg:

[   32.728151] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU8
[   32.728156] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU9
[   32.728160] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU10
[   32.728164] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU11
[   32.728168] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU12
[   32.728172] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU13
[   32.728176] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU14



xl dmesg:

(XEN) Monitor-Mwait will be used to enter C1 state
(XEN) Monitor-Mwait will be used to enter C3 state
(XEN) no cpu_id for acpi_id 8
(XEN) no cpu_id for acpi_id 9
(XEN) no cpu_id for acpi_id 10
(XEN) no cpu_id for acpi_id 11
(XEN) no cpu_id for acpi_id 12
(XEN) no cpu_id for acpi_id 13
(XEN) no cpu_id for acpi_id 14


here the according kernel config:

pc:~# zcat /proc/config.gz | grep FREQ
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=y
CONFIG_CPU_FREQ_STAT=m
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=m
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
CONFIG_X86_PCC_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ=m
# CONFIG_PM_DEVFREQ is not set

and of course:
CONFIG_XEN_ACPI_PROCESSOR=m

xl info:
nr_cpus                : 8
max_cpu_id             : 15
nr_nodes               : 1
cores_per_socket       : 4
threads_per_core       : 2


Greetings and thanks for clarification!
Tobias


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