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Nitro Enclaves are a confidential compute technology which allows a parent instance to carve out resources from itself and spawn a confidential sibling VM next to itself. Similar to other confidential compute solutions, this sibling is controlled by an underlying vmm, but still has a higher level vmm (QEMU) to implement some of its I/O functionality and lifecycle. Add an accelerator to drive this interface. In combination with follow-on patches to enhance the Nitro Enclaves machine model, this will allow users to run a Nitro Enclave using QEMU. Signed-off-by: Alexander Graf <graf@amazon.com> Link: https://lore.kernel.org/r/20260225220807.33092-5-graf@amazon.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
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* QEMU Hardware accelerators support
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*
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* Copyright 2016 Google, Inc.
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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_HW_ACCEL_H
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#define QEMU_HW_ACCEL_H
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#include "hw/core/cpu.h"
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#include "system/kvm.h"
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#include "system/hvf.h"
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#include "system/mshv.h"
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#include "system/whpx.h"
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#include "system/nvmm.h"
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#include "system/nitro-accel.h"
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/**
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* cpu_synchronize_state:
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* cpu_synchronize_pre_loadvm:
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* @cpu: The vCPU to synchronize.
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*
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* Request to synchronize QEMU vCPU registers from the hardware accelerator
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* (the hardware accelerator is the reference).
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*/
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void cpu_synchronize_state(CPUState *cpu);
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void cpu_synchronize_pre_loadvm(CPUState *cpu);
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/**
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* cpu_synchronize_post_reset:
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* cpu_synchronize_post_init:
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* @cpu: The vCPU to synchronize.
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*
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* Request to synchronize QEMU vCPU registers to the hardware accelerator
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* (QEMU is the reference).
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*/
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void cpu_synchronize_post_reset(CPUState *cpu);
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void cpu_synchronize_post_init(CPUState *cpu);
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/**
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* hwaccel_enabled:
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*
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* Returns: %true if a hardware accelerator is enabled, %false otherwise.
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*/
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static inline bool hwaccel_enabled(void)
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{
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return hvf_enabled()
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|| kvm_enabled()
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|| nvmm_enabled()
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|| whpx_enabled();
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}
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#endif /* QEMU_HW_ACCEL_H */
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