2 * Xen HVM emulation support in KVM
4 * Copyright © 2019 Oracle and/or its affiliates. All rights reserved.
5 * Copyright © 2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
7 * This work is licensed under the terms of the GNU GPL, version 2 or later.
8 * See the COPYING file in the top-level directory.
12 #ifndef QEMU_SYSEMU_KVM_XEN_H
13 #define QEMU_SYSEMU_KVM_XEN_H
15 /* The KVM API uses these to indicate "no GPA" or "no GFN" */
16 #define INVALID_GPA UINT64_MAX
17 #define INVALID_GFN UINT64_MAX
19 /* QEMU plays the rôle of dom0 for "interdomain" communication. */
22 int kvm_xen_soft_reset(void);
23 uint32_t kvm_xen_get_caps(void);
24 void *kvm_xen_get_vcpu_info_hva(uint32_t vcpu_id);
25 void kvm_xen_inject_vcpu_callback_vector(uint32_t vcpu_id, int type);
26 void kvm_xen_set_callback_asserted(void);
27 int kvm_xen_set_vcpu_virq(uint32_t vcpu_id, uint16_t virq, uint16_t port);
28 uint16_t kvm_xen_get_gnttab_max_frames(void);
30 #define kvm_xen_has_cap(cap) (!!(kvm_xen_get_caps() & \
31 KVM_XEN_HVM_CONFIG_ ## cap))
33 #define XEN_SPECIAL_AREA_ADDR 0xfeff8000UL
34 #define XEN_SPECIAL_AREA_SIZE 0x4000UL
36 #define XEN_SPECIALPAGE_CONSOLE 0
37 #define XEN_SPECIALPAGE_XENSTORE 1
39 #define XEN_SPECIAL_PFN(x) ((XEN_SPECIAL_AREA_ADDR >> TARGET_PAGE_BITS) + \
42 #endif /* QEMU_SYSEMU_KVM_XEN_H */