korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-13 23:34:05 +08:00
Code Issues Packages Projects Releases Wiki Activity

KVM: arm64: Fix pvtime documentation

Browse Source 
This includes table format and using reST labels for
cross-referencing to vcpu.rst.

Suggested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Usama Arif <usama.arif@bytedance.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221103131210.3603385-1-usama.arif@bytedance.com
This commit is contained in:
Usama Arif 2022-11-03 13:12:10 +00:00 committed by Marc Zyngier
parent 30a0b95b13
commit 83f8a81dec
2 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
Documentation/virt/kvm/arm/pvtime.rst
View File

@ -23,21 +23,23 @@ the PV_TIME_FEATURES hypercall should be probed using the SMCCC 1.1
ARCH_FEATURES mechanism before calling it.
PV_TIME_FEATURES
============= ======== ==========
============= ======== =================================================
Function ID: (uint32) 0xC5000020
PV_call_id: (uint32) The function to query for support.
Currently only PV_TIME_ST is supported.
Return value: (int64) NOT_SUPPORTED (-1) or SUCCESS (0) if the relevant
PV-time feature is supported by the hypervisor.
============= ======== ==========
============= ======== =================================================
PV_TIME_ST
============= ======== ==========
============= ======== ==============================================
Function ID: (uint32) 0xC5000021
Return value: (int64) IPA of the stolen time data structure for this
VCPU. On failure:
NOT_SUPPORTED (-1)
============= ======== ==========
============= ======== ==============================================
The IPA returned by PV_TIME_ST should be mapped by the guest as normal memory
with inner and outer write back caching attributes, in the inner shareable
@ -76,5 +78,5 @@ It is advisable that one or more 64k pages are set aside for the purpose of
these structures and not used for other purposes, this enables the guest to map
the region using 64k pages and avoids conflicting attributes with other memory.
For the user space interface see Documentation/virt/kvm/devices/vcpu.rst
section "3. GROUP: KVM_ARM_VCPU_PVTIME_CTRL".
For the user space interface see
:ref:`Documentation/virt/kvm/devices/vcpu.rst <kvm_arm_vcpu_pvtime_ctrl>`.

2
Documentation/virt/kvm/devices/vcpu.rst
View File

@ -171,6 +171,8 @@ configured values on other VCPUs. Userspace should configure the interrupt
numbers on at least one VCPU after creating all VCPUs and before running any
VCPUs.
.. _kvm_arm_vcpu_pvtime_ctrl:
3. GROUP: KVM_ARM_VCPU_PVTIME_CTRL
==================================