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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>
authored by
Mauro Carvalho Chehab
and committed by
Paolo Bonzini
69bf758b
106ee47d
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Documentation/virt/kvm/arm/hyp-abi.txt
Documentation/virt/kvm/arm/hyp-abi.rst
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Documentation/virt/kvm/arm/hyp-abi.txt
Documentation/virt/kvm/arm/hyp-abi.rst
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* Internal ABI between the kernel and HYP
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.. SPDX-License-Identifier: GPL-2.0
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=======================================
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Internal ABI between the kernel and HYP
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=======================================
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This file documents the interaction between the Linux kernel and the
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hypervisor layer when running Linux as a hypervisor (for example
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Unless specified otherwise, any built-in hypervisor must implement
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these functions (see arch/arm{,64}/include/asm/virt.h):
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* r0/x0 = HVC_SET_VECTORS
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r1/x1 = vectors
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* ::
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r0/x0 = HVC_SET_VECTORS
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r1/x1 = vectors
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Set HVBAR/VBAR_EL2 to 'vectors' to enable a hypervisor. 'vectors'
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must be a physical address, and respect the alignment requirements
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of the architecture. Only implemented by the initial stubs, not by
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Linux hypervisors.
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* r0/x0 = HVC_RESET_VECTORS
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* ::
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r0/x0 = HVC_RESET_VECTORS
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Turn HYP/EL2 MMU off, and reset HVBAR/VBAR_EL2 to the initials
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stubs' exception vector value. This effectively disables an existing
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hypervisor.
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* r0/x0 = HVC_SOFT_RESTART
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r1/x1 = restart address
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x2 = x0's value when entering the next payload (arm64)
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x3 = x1's value when entering the next payload (arm64)
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x4 = x2's value when entering the next payload (arm64)
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* ::
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r0/x0 = HVC_SOFT_RESTART
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r1/x1 = restart address
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x2 = x0's value when entering the next payload (arm64)
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x3 = x1's value when entering the next payload (arm64)
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x4 = x2's value when entering the next payload (arm64)
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Mask all exceptions, disable the MMU, move the arguments into place
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(arm64 only), and jump to the restart address while at HYP/EL2. This