After upgrading to guest kernel 6.1.80, it checks the CPPC V2 capability
in _OSC of DSDT. To support it for ACRN guest, add CPPC V2 capability in
_OSC of DSDT. Currently we only support CPPC V2 capability in _OSC of
DSDT.
Tracked-On: #8691
Signed-off-by: Yuan Lu <yuan.y.lu@intel.com>
Reviewed-by: Fei Li <fei1.li@intel.com>
The optional object _CPC declares an interface that allows OSPM to
transition the processor into a performance state based on a continuous
range of allowable values.
It is associated with HWP on intel CPUs. Although Linux intel_pstate driver
can have its performance managing abilities without _CPC, it may still
need this _CPC table to implement some features such as providing the kernel
multi-core scheduler with core priority info.
As currently we are giving guests a vHWP interface for the multi-core
scheduler, this patch adds _CPC to the guest ACPI. _CPC is written only
when the hypervisor decides the guest should have vHWP, using the
existing pm hypercall ACRN_PMCMD_GET_PX_CNT. The idea is:
- If the VM supports vHWP, then the guest is having continuous p-state.
Thus it doesn't have a specific px_cnt. The hypercall returns success
and px_cnt = 0.
- If the VM's p-state is hidden or hv doesn't have its p-state info,
the hypercall returns fail.
Tracked-On: #8414
Signed-off-by: Wu Zhou <wu.zhou@intel.com>
Reviewed-by: Jian Jun Chen <jian.jun.chen@intel.com>
Modified the copyright year range in code, and corrected "int32_tel"
into "Intel" in two "hypervisor/include/debug/profiling.h" and
"hypervisor/include/debug/profiling_internal.h".
Tracked-On: #7559
Signed-off-by: Ziheng Li <ziheng.li@intel.com>
For all Definition Blocks in ACPI Namespace, their name are a fixed 32 bits.
This patch refine CPU Definition Blocks name to support more than 10 CPUs
for a guest.
Tracked-On: #7387
Signed-off-by: Fei Li <fei1.li@intel.com>
Many of the license and Intel copyright headers include the "All rights
reserved" string. It is not relevant in the context of the BSD-3-Clause
license that the code is released under. This patch removes those strings
throughout the code (hypervisor, devicemodel and misc).
Tracked-On: #7254
Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
This patch is to eliminate kernel error msgs:
'ACPI Error: AE_NOT_FOUND, Evaluating _PSS'
This is caused by missing of _PSS table in guest ACPI. It would
happen when pstate is not injected to the guest.
Kernel ACPI pstate driver first probes
_PPC(performance capabilites) and _PCT(performance control)
in ACPI. If they exist, then it loads the _PSS(performance state).
If _PPC/_PCT are presented while _PSS is missing, it prints
the error msg.
In acrn-dm, _PPC/_PCT are hard-coded to all vCPUs, while _PSS
are constructed with the pCPUs' pstate data. This is base on
assumption that all VMs can have pstate.
Now the pstate is given to VM only when the VM is not sharing
any CPU(and no RTVM is setup in the scenario).
When the VM doesn't have pstate, the hypercall will return px_cnt=0,
and the _PSS is not constructed. In this case, _PPC/PCT should not
be injected, too.
Tracked-On: #6848
Signed-off-by: Zhou, Wu <wu.zhou@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Eddie Dong <eddie.dong@Intel.com>
Per ACPI 6.x chapter 19.6.109, the Processor Operator is deprecated.
Replace it with Device Operator, otherwise the iasl would complain
"Warning 3168 -
Legacy Processor() keyword detected. Use Device() keyword instead."
when launch post-launched VM in devicemodel.
Tracked-On: #5719
Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
The current dm, all non-pci and non-acpi related files are put into
hw/platform directory. This is actually disturbed the meaning of
*platform*. The platform devices are mean of board and SoC specific
non-PCI devices, like usb devices, etc.
This patch refines the ACRN dm directory architecture.
For some common device logic files, likes block_if.c/uart_core.c or
usb_core.c. They will move to hw/ directly.
For platform architecture depended files, create arch/ under root dir.
And create sub-dir arch/x86 for x86 architecture, will create more
architectures in future. The pm.c will move to this new dir.
The hw/acpi will be moved to hw/platform/acpi due to acpi also be
considered as part of platform.
Signed-off-by: Yu Wang <yu1.wang@intel.com>
