[PATCH] kvm/arm: Fix pvtime documentation

From: Usama Arif
Date: Thu Nov 03 2022 - 09:13:10 EST


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

Suggested-by: Bagas Sanjaya <bagasdotme@xxxxxxxxx>
Signed-off-by: Usama Arif <usama.arif@xxxxxxxxxxxxx>
---
Documentation/virt/kvm/arm/pvtime.rst | 14 ++++++++------
Documentation/virt/kvm/devices/vcpu.rst | 2 ++
2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/Documentation/virt/kvm/arm/pvtime.rst b/Documentation/virt/kvm/arm/pvtime.rst
index 392521af7c90..e88b34e586be 100644
--- a/Documentation/virt/kvm/arm/pvtime.rst
+++ b/Documentation/virt/kvm/arm/pvtime.rst
@@ -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>`.
\ No newline at end of file
diff --git a/Documentation/virt/kvm/devices/vcpu.rst b/Documentation/virt/kvm/devices/vcpu.rst
index 716aa3edae14..31f14ec4a65b 100644
--- a/Documentation/virt/kvm/devices/vcpu.rst
+++ b/Documentation/virt/kvm/devices/vcpu.rst
@@ -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
==================================

--
2.25.1