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authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-02-10 07:02:56 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2020-02-12 20:10:00 +0100
commit69bf758bc8a4875a361d7c703995248d808fa24d (patch)
tree9a886c1deac73e306f6b4b8a88675531566dc2f9
parent106ee47dc633a930bb61290713217803aee194e7 (diff)
docs: kvm: convert arm/hyp-abi.txt to ReST
- Add proper markups for titles; - Adjust whitespaces and blank lines to match ReST needs; - Mark literal blocks as such. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--Documentation/virt/kvm/arm/hyp-abi.rst (renamed from Documentation/virt/kvm/arm/hyp-abi.txt)28
-rw-r--r--Documentation/virt/kvm/arm/index.rst1
2 files changed, 20 insertions, 9 deletions
diff --git a/Documentation/virt/kvm/arm/hyp-abi.txt b/Documentation/virt/kvm/arm/hyp-abi.rst
index a20a0bee268d..d1fc27d848e9 100644
--- a/Documentation/virt/kvm/arm/hyp-abi.txt
+++ b/Documentation/virt/kvm/arm/hyp-abi.rst
@@ -1,4 +1,8 @@
-* Internal ABI between the kernel and HYP
+.. SPDX-License-Identifier: GPL-2.0
+
+=======================================
+Internal ABI between the kernel and HYP
+=======================================
This file documents the interaction between the Linux kernel and the
hypervisor layer when running Linux as a hypervisor (for example
@@ -19,25 +23,31 @@ and only act on individual CPUs.
Unless specified otherwise, any built-in hypervisor must implement
these functions (see arch/arm{,64}/include/asm/virt.h):
-* r0/x0 = HVC_SET_VECTORS
- r1/x1 = vectors
+* ::
+
+ r0/x0 = HVC_SET_VECTORS
+ r1/x1 = vectors
Set HVBAR/VBAR_EL2 to 'vectors' to enable a hypervisor. 'vectors'
must be a physical address, and respect the alignment requirements
of the architecture. Only implemented by the initial stubs, not by
Linux hypervisors.
-* r0/x0 = HVC_RESET_VECTORS
+* ::
+
+ r0/x0 = HVC_RESET_VECTORS
Turn HYP/EL2 MMU off, and reset HVBAR/VBAR_EL2 to the initials
stubs' exception vector value. This effectively disables an existing
hypervisor.
-* r0/x0 = HVC_SOFT_RESTART
- r1/x1 = restart address
- x2 = x0's value when entering the next payload (arm64)
- x3 = x1's value when entering the next payload (arm64)
- x4 = x2's value when entering the next payload (arm64)
+* ::
+
+ r0/x0 = HVC_SOFT_RESTART
+ r1/x1 = restart address
+ x2 = x0's value when entering the next payload (arm64)
+ x3 = x1's value when entering the next payload (arm64)
+ x4 = x2's value when entering the next payload (arm64)
Mask all exceptions, disable the MMU, move the arguments into place
(arm64 only), and jump to the restart address while at HYP/EL2. This
diff --git a/Documentation/virt/kvm/arm/index.rst b/Documentation/virt/kvm/arm/index.rst
index e039d9b1e076..134fa5fa77e5 100644
--- a/Documentation/virt/kvm/arm/index.rst
+++ b/Documentation/virt/kvm/arm/index.rst
@@ -7,4 +7,5 @@ ARM
.. toctree::
:maxdepth: 2
+ hyp-abi
pvtime