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Diffstat (limited to 'Documentation/virt/kvm/arm/get_freqtbl.rst')
| -rw-r--r-- | Documentation/virt/kvm/arm/get_freqtbl.rst | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/arm/get_freqtbl.rst b/Documentation/virt/kvm/arm/get_freqtbl.rst new file mode 100644 index 00000000000000..c33961965dad24 --- /dev/null +++ b/Documentation/virt/kvm/arm/get_freqtbl.rst @@ -0,0 +1,23 @@ +.. SPDX-License-Identifier: GPL-2.0 + +get_freqtbl support for arm/arm64 +============================= + +Allows guest to query the frequency(in KHz) table of the current CPU that +the vCPU thread is running on. + +* ARM_SMCCC_VENDOR_HYP_KVM_GET_CPUFREQ_TBL_FUNC_ID: 0x86000043 + +This hypercall uses the SMC32/HVC32 calling convention: + +ARM_SMCCC_VENDOR_HYP_KVM_GET_CPUFREQ_TBL_FUNC_ID + ============== ======== ===================================== + Function ID: (uint32) 0x86000043 + Arguments: (uint32) index of the current CPU's frequency table + Return Values: (int32) NOT_SUPPORTED(-1) on error, or + (uint32) Frequency table entry of requested index + in KHz + of current CPU(r1) + Endianness: Must be the same endianness + as the host. + ============== ======== ===================================== |