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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586/* SPDX-License-Identifier: MIT *//****************************************************************************** * callback.h * * Register guest OS callbacks with Xen. * * Copyright (c) 2006, Ian Campbell */
#ifndef __XEN_PUBLIC_CALLBACK_H__#define __XEN_PUBLIC_CALLBACK_H__
#include <xen/interface/xen.h>
/* * Prototype for this hypercall is: * long callback_op(int cmd, void *extra_args) * @cmd == CALLBACKOP_??? (callback operation). * @extra_args == Operation-specific extra arguments (NULL if none). */
/* x86: Callback for event delivery. */#define CALLBACKTYPE_event 0
/* x86: Failsafe callback when guest state cannot be restored by Xen. */#define CALLBACKTYPE_failsafe 1
/* x86/64 hypervisor: Syscall by 64-bit guest app ('64-on-64-on-64'). */#define CALLBACKTYPE_syscall 2
/* * x86/32 hypervisor: Only available on x86/32 when supervisor_mode_kernel * feature is enabled. Do not use this callback type in new code. */#define CALLBACKTYPE_sysenter_deprecated 3
/* x86: Callback for NMI delivery. */#define CALLBACKTYPE_nmi 4
/* * x86: sysenter is only available as follows: * - 32-bit hypervisor: with the supervisor_mode_kernel feature enabled * - 64-bit hypervisor: 32-bit guest applications on Intel CPUs * ('32-on-32-on-64', '32-on-64-on-64') * [nb. also 64-bit guest applications on Intel CPUs * ('64-on-64-on-64'), but syscall is preferred] */#define CALLBACKTYPE_sysenter 5
/* * x86/64 hypervisor: Syscall by 32-bit guest app on AMD CPUs * ('32-on-32-on-64', '32-on-64-on-64') */#define CALLBACKTYPE_syscall32 7
/* * Disable event deliver during callback? This flag is ignored for event and * NMI callbacks: event delivery is unconditionally disabled. */#define _CALLBACKF_mask_events 0#define CALLBACKF_mask_events (1U << _CALLBACKF_mask_events)
/* * Register a callback. */#define CALLBACKOP_register 0struct callback_register { uint16_t type; uint16_t flags; xen_callback_t address;};
/* * Unregister a callback. * * Not all callbacks can be unregistered. -EINVAL will be returned if * you attempt to unregister such a callback. */#define CALLBACKOP_unregister 1struct callback_unregister { uint16_t type; uint16_t _unused;};
#endif /* __XEN_PUBLIC_CALLBACK_H__ */