Commit cec0e48b authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab Committed by Paolo Bonzini

docs: kvm: arm/psci.txt: convert to ReST

- Add a title for the document;
- Adjust whitespaces for it to be properly formatted after
  parsed.
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 69bf758b
......@@ -8,4 +8,5 @@ ARM
:maxdepth: 2
hyp-abi
psci
pvtime
.. SPDX-License-Identifier: GPL-2.0
=========================================
Power State Coordination Interface (PSCI)
=========================================
KVM implements the PSCI (Power State Coordination Interface)
specification in order to provide services such as CPU on/off, reset
and power-off to the guest.
......@@ -33,29 +39,39 @@ The following register is defined:
Holds the state of the firmware support to mitigate CVE-2017-5715, as
offered by KVM to the guest via a HVC call. The workaround is described
under SMCCC_ARCH_WORKAROUND_1 in [1].
Accepted values are:
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_AVAIL: KVM does not offer
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_AVAIL:
KVM does not offer
firmware support for the workaround. The mitigation status for the
guest is unknown.
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_AVAIL: The workaround HVC call is
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_AVAIL:
The workaround HVC call is
available to the guest and required for the mitigation.
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_REQUIRED: The workaround HVC call
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_REQUIRED:
The workaround HVC call
is available to the guest, but it is not needed on this VCPU.
* KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2:
Holds the state of the firmware support to mitigate CVE-2018-3639, as
offered by KVM to the guest via a HVC call. The workaround is described
under SMCCC_ARCH_WORKAROUND_2 in [1].
under SMCCC_ARCH_WORKAROUND_2 in [1]_.
Accepted values are:
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_AVAIL: A workaround is not
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_AVAIL:
A workaround is not
available. KVM does not offer firmware support for the workaround.
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_UNKNOWN: The workaround state is
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_UNKNOWN:
The workaround state is
unknown. KVM does not offer firmware support for the workaround.
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_AVAIL: The workaround is available,
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_AVAIL:
The workaround is available,
and can be disabled by a vCPU. If
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_ENABLED is set, it is active for
this vCPU.
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_REQUIRED: The workaround is
always active on this vCPU or it is not needed.
KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_REQUIRED:
The workaround is always active on this vCPU or it is not needed.
[1] https://developer.arm.com/-/media/developer/pdf/ARM_DEN_0070A_Firmware_interfaces_for_mitigating_CVE-2017-5715.pdf
.. [1] https://developer.arm.com/-/media/developer/pdf/ARM_DEN_0070A_Firmware_interfaces_for_mitigating_CVE-2017-5715.pdf
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