ff047453f5
When using KVM, use the kernel's initial state to set up the cpreg list, and sync to and from the kernel when doing migration. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
66 lines
2 KiB
C
66 lines
2 KiB
C
/*
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* QEMU KVM support -- ARM specific functions.
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*
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* Copyright (c) 2012 Linaro Limited
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_KVM_ARM_H
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#define QEMU_KVM_ARM_H
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#include "sysemu/kvm.h"
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#include "exec/memory.h"
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/**
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* kvm_arm_register_device:
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* @mr: memory region for this device
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* @devid: the KVM device ID
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*
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* Remember the memory region @mr, and when it is mapped by the
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* machine model, tell the kernel that base address using the
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* KVM_SET_DEVICE_ADDRESS ioctl. @devid should be the ID of
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* the device as defined by KVM_SET_DEVICE_ADDRESS.
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* The machine model may map and unmap the device multiple times;
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* the kernel will only be told the final address at the point
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* where machine init is complete.
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*/
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void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid);
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/**
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* write_list_to_kvmstate:
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* @cpu: ARMCPU
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*
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* For each register listed in the ARMCPU cpreg_indexes list, write
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* its value from the cpreg_values list into the kernel (via ioctl).
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* This updates KVM's working data structures from TCG data or
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* from incoming migration state.
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*
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* Returns: true if all register values were updated correctly,
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* false if some register was unknown to the kernel or could not
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* be written (eg constant register with the wrong value).
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* Note that we do not stop early on failure -- we will attempt
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* writing all registers in the list.
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*/
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bool write_list_to_kvmstate(ARMCPU *cpu);
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/**
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* write_kvmstate_to_list:
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* @cpu: ARMCPU
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*
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* For each register listed in the ARMCPU cpreg_indexes list, write
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* its value from the kernel into the cpreg_values list. This is used to
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* copy info from KVM's working data structures into TCG or
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* for outbound migration.
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*
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* Returns: true if all register values were read correctly,
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* false if some register was unknown or could not be read.
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* Note that we do not stop early on failure -- we will attempt
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* reading all registers in the list.
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*/
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bool write_kvmstate_to_list(ARMCPU *cpu);
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#endif
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