c723d4c15e
Add the array of virq ports to each vCPU so that we can deliver timers, debug ports, etc. Global virqs are allocated against vCPU 0 initially, but can be migrated to other vCPUs (when we implement that). The kernel needs to know about VIRQ_TIMER in order to accelerate timers, so tell it via KVM_XEN_VCPU_ATTR_TYPE_TIMER. Also save/restore the value of the singleshot timer across migration, as the kernel will handle the hypercalls automatically now. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
32 lines
1.0 KiB
C
32 lines
1.0 KiB
C
/*
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* Xen HVM emulation support in KVM
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*
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* Copyright © 2019 Oracle and/or its affiliates. All rights reserved.
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* Copyright © 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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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_SYSEMU_KVM_XEN_H
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#define QEMU_SYSEMU_KVM_XEN_H
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/* The KVM API uses these to indicate "no GPA" or "no GFN" */
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#define INVALID_GPA UINT64_MAX
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#define INVALID_GFN UINT64_MAX
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/* QEMU plays the rôle of dom0 for "interdomain" communication. */
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#define DOMID_QEMU 0
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int kvm_xen_soft_reset(void);
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uint32_t kvm_xen_get_caps(void);
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void *kvm_xen_get_vcpu_info_hva(uint32_t vcpu_id);
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void kvm_xen_inject_vcpu_callback_vector(uint32_t vcpu_id, int type);
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int kvm_xen_set_vcpu_virq(uint32_t vcpu_id, uint16_t virq, uint16_t port);
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#define kvm_xen_has_cap(cap) (!!(kvm_xen_get_caps() & \
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KVM_XEN_HVM_CONFIG_ ## cap))
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#endif /* QEMU_SYSEMU_KVM_XEN_H */
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