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/*
* Compatibility header for building as an external module.
*/
/*
* Avoid picking up the kernel's kvm.h in case we have a newer one.
*/
#include <linux/compiler.h>
#include <linux/version.h>
#include "include/linux/kvm.h"
#include <linux/cpu.h>
/*
* 2.6.16 does not have GFP_NOWAIT
*/
#include <linux/gfp.h>
#ifndef GFP_NOWAIT
#define GFP_NOWAIT (GFP_ATOMIC & ~__GFP_HIGH)
#endif
/*
* kvm profiling support needs 2.6.20
*/
#include <linux/profile.h>
#ifndef KVM_PROFILING
#define KVM_PROFILING 1234
#define prof_on 4321
#endif
/*
* smp_call_function_single() is not exported below 2.6.20
*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
#include <linux/spinlock.h>
#include <linux/smp.h>
static spinlock_t scfs_lock = SPIN_LOCK_UNLOCKED;
static int scfs_cpu;
static void (*scfs_func)(void *info);
static void scfs_thunk(void *info)
{
if (raw_smp_processor_id() == scfs_cpu)
scfs_func(info);
}
static inline int smp_call_function_single1(int cpu, void (*func)(void *info),
void *info, int nonatomic, int wait)
{
int r;
spin_lock(&scfs_lock);
scfs_cpu = cpu;
scfs_func = func;
r = smp_call_function(scfs_thunk, info, nonatomic, wait);
spin_unlock(&scfs_lock);
return r;
}
#define smp_call_function_single smp_call_function_single1
#endif
/*
* The cpu hotplug stubs are broken if !CONFIG_CPU_HOTPLUG
*/
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,15)
#define DEFINE_MUTEX(a) DECLARE_MUTEX(a)
#define mutex_lock_interruptible(a) down_interruptible(a)
#define mutex_unlock(a) up(a)
#define mutex_lock(a) down(a)
#define mutex_init(a) init_MUTEX(a)
#define mutex_trylock(a) down_trylock(a)
#define mutex semaphore
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
#ifndef kzalloc
#define kzalloc(size,flags) \
({ \
void *__ret = kmalloc(size, flags); \
if (__ret)
memset(__ret, 0, size);
__ret;
})
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
#ifndef kmem_cache_zalloc
#define kmem_cache_zalloc(cache,flags) \
({ \
void *__ret = kmem_cache_alloc(cache, flags); \
if (__ret) \
memset(__ret, 0, kmem_cache_size(cache)); \
__ret; \
})
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,21)
#ifndef CONFIG_HOTPLUG_CPU
#define register_cpu_notifier(nb) (0)
#endif
#endif
#include <linux/magic.h>
#ifndef KVMFS_SUPER_MAGIC
#define KVMFS_SUPER_MAGIC 0x19700426
#endif
/*
* get_sb() callback changed.
*/
#include <linux/fs.h>
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
static inline struct super_block *kvmfs_get_sb(
struct file_system_type *fs_type,
int flags, const char *dev_name,
void *data)
{
return get_sb_pseudo(fs_type, "kvm:", NULL, KVMFS_SUPER_MAGIC);
}
#endif
#include <linux/miscdevice.h>
#ifndef KVM_MINOR
#define KVM_MINOR 232
#endif
#ifndef CPU_TASKS_FROZEN
#define CPU_TASKS_FROZEN 0x0010
#define CPU_ONLINE_FROZEN (CPU_ONLINE | CPU_TASKS_FROZEN)
#define CPU_UP_PREPARE_FROZEN (CPU_UP_PREPARE | CPU_TASKS_FROZEN)
#define CPU_UP_CANCELED_FROZEN (CPU_UP_CANCELED | CPU_TASKS_FROZEN)
#define CPU_DOWN_PREPARE_FROZEN (CPU_DOWN_PREPARE | CPU_TASKS_FROZEN)
#define CPU_DOWN_FAILED_FROZEN (CPU_DOWN_FAILED | CPU_TASKS_FROZEN)
#define CPU_DEAD_FROZEN (CPU_DEAD | CPU_TASKS_FROZEN)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
#ifndef _EFER_SCE
#define _EFER_SCE 0 /* SYSCALL/SYSRET */
#endif
#ifndef EFER_SCE
#define EFER_SCE (1<<_EFER_SCE)
#endif
#endif
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