bc94638886ab21f8247d3f7f39573d3feb7d8284("ACPI: processor: Export
function to claim _CST control")
987c785319b99e32602f7f86cfae3cf9b81e402b("ACPI: processor: Introduce
acpi_processor_evaluate_cst()")
aa659a3fca79abd9a3ca3ddc535db631b01c9a02("ACPI: processor: Clean up
acpi_processor_evaluate_cst()")
239ed06d0eefc4ee351af69bd64742ada56c4bdb("ACPI: processor: Make
ACPI_PROCESSOR_CSTATE depend on ACPI_PROCESSOR")
77fb4e0a559a960eb36d0b2c50c781c5492577eb("ACPI: processor: Export
acpi_processor_evaluate_cst()")
9f3d6daf61e5156139cd05643f7f1c2a9b7b49b0("intel_idle: Refactor
intel_idle_cpuidle_driver_init()")
18734958e9bfbc055805d110a38dc76307eba742("intel_idle: Use ACPI _CST for
processor models without C-state tables")
75a80267410e38ab76c4ceb39753f96d72113781("cpuidle: Allow idle states to
be disabled by default")
bff8e60a86f4960133f90ad9add9adeb082b8154("intel_idle: Allow ACPI _CST to
be used for selected known processors")
4ec32d9e8e5b6d6eb491eeee3938665d8a2388fa("intel_idle: Add module
parameter to prevent ACPI _CST from being used")
e6d4f08a677654385869ba0c39d7c9ceec47e5c5("intel_idle: Use ACPI _CST on
server systems")
a3299182216397a0b943d2549d1997f4eba2bdd2("Documentation: admin-guide:
PM: Add intel_idle document")
** Changed in: intel
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/1852045
Title:
[CML-U62] Need enable intel_idle patch support for Comet lake- U 6+2
Status in intel:
Fix Committed
Status in linux package in Ubuntu:
Incomplete
Bug description:
Cometlake -U 6+2 is using a different CPU Model number: DEC 166, HEX:
A6
We need the intel_idle patch to support CML-U6+2
root@p-cml02~ # cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 166
model name : Intel(R) Core(TM) i7-10710U CPU @ 1.10GHz
stepping : 0
microcode : 0xb0
cpu MHz : 2301.349
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 0
cpu cores : 6
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 22
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp
lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma
cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes
xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single
ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad
fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap
clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp
hwp_notify hwp_act_window hwp_epp md_clear flush_l1d arch_capabilities
bugs : spectre_v1 spectre_v2 spec_store_bypass
bogomips : 3200.00
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
v5.2-rc6 kernel dmesg log running on CML-U 6+2 is attached: dmesg-
cml-5.2-rc6-poweron.log
[ 10.565737] calling intel_idle_init+0x0/0x5ef @ 1
[ 10.570546] intel_idle: does not run on family 6 model 166
[ 10.576028] initcall intel_idle_init+0x0/0x5ef returned -19 after 5354 usecs
Target Release: 20.10
Target Kernel: 5.7
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