[mirror_ubuntu-artful-kernel.git] / arch / arm / xen / enlighten.c

#include <xen/xen.h>
#include <xen/events.h>
#include <xen/grant_table.h>
#include <xen/hvm.h>
#include <xen/interface/vcpu.h>
#include <xen/interface/xen.h>
#include <xen/interface/memory.h>
#include <xen/interface/hvm/params.h>
#include <xen/features.h>
#include <xen/platform_pci.h>
#include <xen/xenbus.h>
#include <xen/page.h>
#include <xen/interface/sched.h>
#include <xen/xen-ops.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
#include <asm/system_misc.h>
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>

#include <linux/mm.h>

struct start_info _xen_start_info;
struct start_info *xen_start_info = &_xen_start_info;
EXPORT_SYMBOL_GPL(xen_start_info);

enum xen_domain_type xen_domain_type = XEN_NATIVE;
EXPORT_SYMBOL_GPL(xen_domain_type);

struct shared_info xen_dummy_shared_info;
struct shared_info *HYPERVISOR_shared_info = (void *)&xen_dummy_shared_info;

DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
static struct vcpu_info __percpu *xen_vcpu_info;

/* These are unused until we support booting "pre-ballooned" */
unsigned long xen_released_pages;
struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initdata;

/* TODO: to be removed */
__read_mostly int xen_have_vector_callback;
EXPORT_SYMBOL_GPL(xen_have_vector_callback);

int xen_platform_pci_unplug = XEN_UNPLUG_ALL;
EXPORT_SYMBOL_GPL(xen_platform_pci_unplug);

static __read_mostly int xen_events_irq = -1;

/* map fgmfn of domid to lpfn in the current domain */
static int map_foreign_page(unsigned long lpfn, unsigned long fgmfn,
			    unsigned int domid)
{
	int rc;
	struct xen_add_to_physmap_range xatp = {
		.domid = DOMID_SELF,
		.foreign_domid = domid,
		.size = 1,
		.space = XENMAPSPACE_gmfn_foreign,
	};
	xen_ulong_t idx = fgmfn;
	xen_pfn_t gpfn = lpfn;
	int err = 0;

	set_xen_guest_handle(xatp.idxs, &idx);
	set_xen_guest_handle(xatp.gpfns, &gpfn);
	set_xen_guest_handle(xatp.errs, &err);

	rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap_range, &xatp);
	if (rc || err) {
		pr_warn("Failed to map pfn to mfn rc:%d:%d pfn:%lx mfn:%lx\n",
			rc, err, lpfn, fgmfn);
		return 1;
	}
	return 0;
}

struct remap_data {
	xen_pfn_t fgmfn; /* foreign domain's gmfn */
	pgprot_t prot;
	domid_t  domid;
	struct vm_area_struct *vma;
	int index;
	struct page **pages;
	struct xen_remap_mfn_info *info;
};

static int remap_pte_fn(pte_t *ptep, pgtable_t token, unsigned long addr,
			void *data)
{
	struct remap_data *info = data;
	struct page *page = info->pages[info->index++];
	unsigned long pfn = page_to_pfn(page);
	pte_t pte = pfn_pte(pfn, info->prot);

	if (map_foreign_page(pfn, info->fgmfn, info->domid))
		return -EFAULT;
	set_pte_at(info->vma->vm_mm, addr, ptep, pte);

	return 0;
}

int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
			       unsigned long addr,
			       xen_pfn_t mfn, int nr,
			       pgprot_t prot, unsigned domid,
			       struct page **pages)
{
	int err;
	struct remap_data data;

	/* TBD: Batching, current sole caller only does page at a time */
	if (nr > 1)
		return -EINVAL;

	data.fgmfn = mfn;
	data.prot = prot;
	data.domid = domid;
	data.vma = vma;
	data.index = 0;
	data.pages = pages;
	err = apply_to_page_range(vma->vm_mm, addr, nr << PAGE_SHIFT,
				  remap_pte_fn, &data);
	return err;
}
EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range);

int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,
			       int nr, struct page **pages)
{
	int i;

	for (i = 0; i < nr; i++) {
		struct xen_remove_from_physmap xrp;
		unsigned long rc, pfn;

		pfn = page_to_pfn(pages[i]);

		xrp.domid = DOMID_SELF;
		xrp.gpfn = pfn;
		rc = HYPERVISOR_memory_op(XENMEM_remove_from_physmap, &xrp);
		if (rc) {
			pr_warn("Failed to unmap pfn:%lx rc:%ld\n",
				pfn, rc);
			return rc;
		}
	}
	return 0;
}
EXPORT_SYMBOL_GPL(xen_unmap_domain_mfn_range);

static int __init xen_secondary_init(unsigned int cpu)
{
	struct vcpu_register_vcpu_info info;
	struct vcpu_info *vcpup;
	int err;

	pr_info("Xen: initializing cpu%d\n", cpu);
	vcpup = per_cpu_ptr(xen_vcpu_info, cpu);

	info.mfn = __pa(vcpup) >> PAGE_SHIFT;
	info.offset = offset_in_page(vcpup);

	err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, cpu, &info);
	if (err) {
		pr_debug("register_vcpu_info failed: err=%d\n", err);
	} else {
		/* This cpu is using the registered vcpu info, even if
		   later ones fail to. */
		per_cpu(xen_vcpu, cpu) = vcpup;
	}
	return 0;
}

static void xen_restart(char str, const char *cmd)
{
	struct sched_shutdown r = { .reason = SHUTDOWN_reboot };
	int rc;
	rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
	if (rc)
		BUG();
}

static void xen_power_off(void)
{
	struct sched_shutdown r = { .reason = SHUTDOWN_poweroff };
	int rc;
	rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
	if (rc)
		BUG();
}

/*
 * see Documentation/devicetree/bindings/arm/xen.txt for the
 * documentation of the Xen Device Tree format.
 */
#define GRANT_TABLE_PHYSADDR 0
static int __init xen_guest_init(void)
{
	struct xen_add_to_physmap xatp;
	static struct shared_info *shared_info_page = 0;
	struct device_node *node;
	int len;
	const char *s = NULL;
	const char *version = NULL;
	const char *xen_prefix = "xen,xen-";
	struct resource res;
	int i;

	node = of_find_compatible_node(NULL, NULL, "xen,xen");
	if (!node) {
		pr_debug("No Xen support\n");
		return 0;
	}
	s = of_get_property(node, "compatible", &len);
	if (strlen(xen_prefix) + 3  < len &&
			!strncmp(xen_prefix, s, strlen(xen_prefix)))
		version = s + strlen(xen_prefix);
	if (version == NULL) {
		pr_debug("Xen version not found\n");
		return 0;
	}
	if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res))
		return 0;
	xen_hvm_resume_frames = res.start >> PAGE_SHIFT;
	xen_events_irq = irq_of_parse_and_map(node, 0);
	pr_info("Xen %s support found, events_irq=%d gnttab_frame_pfn=%lx\n",
			version, xen_events_irq, xen_hvm_resume_frames);
	xen_domain_type = XEN_HVM_DOMAIN;

	xen_setup_features();
	if (xen_feature(XENFEAT_dom0))
		xen_start_info->flags |= SIF_INITDOMAIN|SIF_PRIVILEGED;
	else
		xen_start_info->flags &= ~(SIF_INITDOMAIN|SIF_PRIVILEGED);

	if (!shared_info_page)
		shared_info_page = (struct shared_info *)
			get_zeroed_page(GFP_KERNEL);
	if (!shared_info_page) {
		pr_err("not enough memory\n");
		return -ENOMEM;
	}
	xatp.domid = DOMID_SELF;
	xatp.idx = 0;
	xatp.space = XENMAPSPACE_shared_info;
	xatp.gpfn = __pa(shared_info_page) >> PAGE_SHIFT;
	if (HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp))
		BUG();

	HYPERVISOR_shared_info = (struct shared_info *)shared_info_page;

	/* xen_vcpu is a pointer to the vcpu_info struct in the shared_info
	 * page, we use it in the event channel upcall and in some pvclock
	 * related functions. 
	 * The shared info contains exactly 1 CPU (the boot CPU). The guest
	 * is required to use VCPUOP_register_vcpu_info to place vcpu info
	 * for secondary CPUs as they are brought up.
	 * For uniformity we use VCPUOP_register_vcpu_info even on cpu0.
	 */
	xen_vcpu_info = __alloc_percpu(sizeof(struct vcpu_info),
			                       sizeof(struct vcpu_info));
	if (xen_vcpu_info == NULL)
		return -ENOMEM;
	for_each_online_cpu(i)
		xen_secondary_init(i);

	gnttab_init();
	if (!xen_initial_domain())
		xenbus_probe(NULL);

	pm_power_off = xen_power_off;
	arm_pm_restart = xen_restart;

	return 0;
}
core_initcall(xen_guest_init);

static irqreturn_t xen_arm_callback(int irq, void *arg)
{
	xen_hvm_evtchn_do_upcall();
	return IRQ_HANDLED;
}

static __init void xen_percpu_enable_events(void *unused)
{
	enable_percpu_irq(xen_events_irq, 0);
}

static int __init xen_init_events(void)
{
	if (!xen_domain() || xen_events_irq < 0)
		return -ENODEV;

	xen_init_IRQ();

	if (request_percpu_irq(xen_events_irq, xen_arm_callback,
			"events", &xen_vcpu)) {
		pr_err("Error requesting IRQ %d\n", xen_events_irq);
		return -EINVAL;
	}

	on_each_cpu(xen_percpu_enable_events, NULL, 0);

	return 0;
}
postcore_initcall(xen_init_events);

/* In the hypervisor.S file. */
EXPORT_SYMBOL_GPL(HYPERVISOR_event_channel_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_grant_table_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_xen_version);
EXPORT_SYMBOL_GPL(HYPERVISOR_console_io);
EXPORT_SYMBOL_GPL(HYPERVISOR_sched_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_hvm_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_memory_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_physdev_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_vcpu_op);
EXPORT_SYMBOL_GPL(privcmd_call);
Commit	Line	Data
4c071ee5	1	#include <xen/xen.h>
0ec53ecf	2	#include <xen/events.h>
b3b52fd8 SS	3	#include <xen/grant_table.h>
b3b52fd8 SS	4	#include <xen/hvm.h>
9a9ab3cc	5	#include <xen/interface/vcpu.h>
4c071ee5 SS	6	#include <xen/interface/xen.h>
4c071ee5 SS	7	#include <xen/interface/memory.h>
b3b52fd8	8	#include <xen/interface/hvm/params.h>
ef61ee0d	9	#include <xen/features.h>
4c071ee5	10	#include <xen/platform_pci.h>
b3b52fd8	11	#include <xen/xenbus.h>
c61ba729	12	#include <xen/page.h>
6abb749e	13	#include <xen/interface/sched.h>
f832da06	14	#include <xen/xen-ops.h>
4c071ee5 SS	15	#include <asm/xen/hypervisor.h>
4c071ee5 SS	16	#include <asm/xen/hypercall.h>
6abb749e	17	#include <asm/system_misc.h>
0ec53ecf SS	18	#include <linux/interrupt.h>
0ec53ecf SS	19	#include <linux/irqreturn.h>
4c071ee5	20	#include <linux/module.h>
2e01f166 SS	21	#include <linux/of.h>
	22	#include <linux/of_irq.h>
	23	#include <linux/of_address.h>
4c071ee5	24
f832da06 IC	25	#include <linux/mm.h>
f832da06 IC	26
4c071ee5 SS	27	struct start_info _xen_start_info;
	28	struct start_info *xen_start_info = &_xen_start_info;
	29	EXPORT_SYMBOL_GPL(xen_start_info);
	30
	31	enum xen_domain_type xen_domain_type = XEN_NATIVE;
	32	EXPORT_SYMBOL_GPL(xen_domain_type);
	33
	34	struct shared_info xen_dummy_shared_info;
	35	struct shared_info HYPERVISOR_shared_info = (void )&xen_dummy_shared_info;
	36
	37	DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
9a9ab3cc	38	static struct vcpu_info __percpu *xen_vcpu_info;
4c071ee5	39
c61ba729 IC	40	/* These are unused until we support booting "pre-ballooned" */
	41	unsigned long xen_released_pages;
	42	struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initdata;
	43
4c071ee5 SS	44	/* TODO: to be removed */
	45	__read_mostly int xen_have_vector_callback;
	46	EXPORT_SYMBOL_GPL(xen_have_vector_callback);
	47
	48	int xen_platform_pci_unplug = XEN_UNPLUG_ALL;
	49	EXPORT_SYMBOL_GPL(xen_platform_pci_unplug);
	50
0ec53ecf SS	51	static __read_mostly int xen_events_irq = -1;
0ec53ecf SS	52
f832da06 IC	53	/* map fgmfn of domid to lpfn in the current domain */
	54	static int map_foreign_page(unsigned long lpfn, unsigned long fgmfn,
	55	unsigned int domid)
	56	{
	57	int rc;
	58	struct xen_add_to_physmap_range xatp = {
	59	.domid = DOMID_SELF,
	60	.foreign_domid = domid,
	61	.size = 1,
	62	.space = XENMAPSPACE_gmfn_foreign,
	63	};
	64	xen_ulong_t idx = fgmfn;
	65	xen_pfn_t gpfn = lpfn;
07d0c943	66	int err = 0;
f832da06 IC	67
	68	set_xen_guest_handle(xatp.idxs, &idx);
	69	set_xen_guest_handle(xatp.gpfns, &gpfn);
07d0c943	70	set_xen_guest_handle(xatp.errs, &err);
f832da06 IC	71
f832da06 IC	72	rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap_range, &xatp);
07d0c943 IC	73	if (rc \|\| err) {
	74	pr_warn("Failed to map pfn to mfn rc:%d:%d pfn:%lx mfn:%lx\n",
	75	rc, err, lpfn, fgmfn);
f832da06 IC	76	return 1;
	77	}
	78	return 0;
	79	}
	80
	81	struct remap_data {
	82	xen_pfn_t fgmfn; /* foreign domain's gmfn */
	83	pgprot_t prot;
	84	domid_t domid;
	85	struct vm_area_struct *vma;
	86	int index;
	87	struct page **pages;
	88	struct xen_remap_mfn_info *info;
	89	};
	90
	91	static int remap_pte_fn(pte_t *ptep, pgtable_t token, unsigned long addr,
	92	void *data)
	93	{
	94	struct remap_data *info = data;
	95	struct page *page = info->pages[info->index++];
	96	unsigned long pfn = page_to_pfn(page);
	97	pte_t pte = pfn_pte(pfn, info->prot);
	98
	99	if (map_foreign_page(pfn, info->fgmfn, info->domid))
	100	return -EFAULT;
	101	set_pte_at(info->vma->vm_mm, addr, ptep, pte);
	102
	103	return 0;
	104	}
	105
4c071ee5 SS	106	int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
4c071ee5 SS	107	unsigned long addr,
f832da06 IC	108	xen_pfn_t mfn, int nr,
	109	pgprot_t prot, unsigned domid,
	110	struct page **pages)
4c071ee5	111	{
f832da06 IC	112	int err;
	113	struct remap_data data;
	114
	115	/* TBD: Batching, current sole caller only does page at a time */
	116	if (nr > 1)
	117	return -EINVAL;
	118
	119	data.fgmfn = mfn;
	120	data.prot = prot;
	121	data.domid = domid;
	122	data.vma = vma;
	123	data.index = 0;
	124	data.pages = pages;
	125	err = apply_to_page_range(vma->vm_mm, addr, nr << PAGE_SHIFT,
	126	remap_pte_fn, &data);
	127	return err;
4c071ee5 SS	128	}
4c071ee5 SS	129	EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range);
2e01f166	130
f832da06 IC	131	int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,
	132	int nr, struct page **pages)
	133	{
	134	int i;
	135
	136	for (i = 0; i < nr; i++) {
	137	struct xen_remove_from_physmap xrp;
	138	unsigned long rc, pfn;
	139
	140	pfn = page_to_pfn(pages[i]);
	141
	142	xrp.domid = DOMID_SELF;
	143	xrp.gpfn = pfn;
	144	rc = HYPERVISOR_memory_op(XENMEM_remove_from_physmap, &xrp);
	145	if (rc) {
	146	pr_warn("Failed to unmap pfn:%lx rc:%ld\n",
	147	pfn, rc);
	148	return rc;
	149	}
	150	}
	151	return 0;
	152	}
	153	EXPORT_SYMBOL_GPL(xen_unmap_domain_mfn_range);
	154
9a9ab3cc SS	155	static int __init xen_secondary_init(unsigned int cpu)
	156	{
	157	struct vcpu_register_vcpu_info info;
	158	struct vcpu_info *vcpup;
	159	int err;
	160
	161	pr_info("Xen: initializing cpu%d\n", cpu);
	162	vcpup = per_cpu_ptr(xen_vcpu_info, cpu);
	163
	164	info.mfn = __pa(vcpup) >> PAGE_SHIFT;
	165	info.offset = offset_in_page(vcpup);
	166
	167	err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, cpu, &info);
	168	if (err) {
	169	pr_debug("register_vcpu_info failed: err=%d\n", err);
	170	} else {
	171	/* This cpu is using the registered vcpu info, even if
	172	later ones fail to. */
	173	per_cpu(xen_vcpu, cpu) = vcpup;
	174	}
	175	return 0;
	176	}
	177
6abb749e SS	178	static void xen_restart(char str, const char *cmd)
	179	{
	180	struct sched_shutdown r = { .reason = SHUTDOWN_reboot };
	181	int rc;
	182	rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
	183	if (rc)
	184	BUG();
	185	}
	186
	187	static void xen_power_off(void)
	188	{
	189	struct sched_shutdown r = { .reason = SHUTDOWN_poweroff };
	190	int rc;
	191	rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
	192	if (rc)
	193	BUG();
	194	}
	195
2e01f166 SS	196	/*
	197	* see Documentation/devicetree/bindings/arm/xen.txt for the
	198	* documentation of the Xen Device Tree format.
	199	*/
b3b52fd8	200	#define GRANT_TABLE_PHYSADDR 0
2e01f166 SS	201	static int __init xen_guest_init(void)
	202	{
	203	struct xen_add_to_physmap xatp;
	204	static struct shared_info *shared_info_page = 0;
	205	struct device_node *node;
	206	int len;
	207	const char *s = NULL;
	208	const char *version = NULL;
	209	const char *xen_prefix = "xen,xen-";
b3b52fd8	210	struct resource res;
9a9ab3cc	211	int i;
2e01f166 SS	212
	213	node = of_find_compatible_node(NULL, NULL, "xen,xen");
	214	if (!node) {
	215	pr_debug("No Xen support\n");
	216	return 0;
	217	}
	218	s = of_get_property(node, "compatible", &len);
	219	if (strlen(xen_prefix) + 3 < len &&
	220	!strncmp(xen_prefix, s, strlen(xen_prefix)))
	221	version = s + strlen(xen_prefix);
	222	if (version == NULL) {
	223	pr_debug("Xen version not found\n");
	224	return 0;
	225	}
b3b52fd8 SS	226	if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res))
	227	return 0;
	228	xen_hvm_resume_frames = res.start >> PAGE_SHIFT;
0ec53ecf SS	229	xen_events_irq = irq_of_parse_and_map(node, 0);
	230	pr_info("Xen %s support found, events_irq=%d gnttab_frame_pfn=%lx\n",
	231	version, xen_events_irq, xen_hvm_resume_frames);
2e01f166 SS	232	xen_domain_type = XEN_HVM_DOMAIN;
2e01f166 SS	233
ef61ee0d SS	234	xen_setup_features();
	235	if (xen_feature(XENFEAT_dom0))
	236	xen_start_info->flags \|= SIF_INITDOMAIN\|SIF_PRIVILEGED;
	237	else
	238	xen_start_info->flags &= ~(SIF_INITDOMAIN\|SIF_PRIVILEGED);
	239
2e01f166 SS	240	if (!shared_info_page)
	241	shared_info_page = (struct shared_info *)
	242	get_zeroed_page(GFP_KERNEL);
	243	if (!shared_info_page) {
	244	pr_err("not enough memory\n");
	245	return -ENOMEM;
	246	}
	247	xatp.domid = DOMID_SELF;
	248	xatp.idx = 0;
	249	xatp.space = XENMAPSPACE_shared_info;
	250	xatp.gpfn = __pa(shared_info_page) >> PAGE_SHIFT;
	251	if (HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp))
	252	BUG();
	253
	254	HYPERVISOR_shared_info = (struct shared_info *)shared_info_page;
	255
	256	/* xen_vcpu is a pointer to the vcpu_info struct in the shared_info
	257	* page, we use it in the event channel upcall and in some pvclock
9a9ab3cc	258	* related functions.
2e01f166 SS	259	* The shared info contains exactly 1 CPU (the boot CPU). The guest
2e01f166 SS	260	* is required to use VCPUOP_register_vcpu_info to place vcpu info
9a9ab3cc SS	261	* for secondary CPUs as they are brought up.
	262	* For uniformity we use VCPUOP_register_vcpu_info even on cpu0.
	263	*/
	264	xen_vcpu_info = __alloc_percpu(sizeof(struct vcpu_info),
	265	sizeof(struct vcpu_info));
	266	if (xen_vcpu_info == NULL)
	267	return -ENOMEM;
	268	for_each_online_cpu(i)
	269	xen_secondary_init(i);
b3b52fd8 SS	270
	271	gnttab_init();
	272	if (!xen_initial_domain())
	273	xenbus_probe(NULL);
	274
6abb749e SS	275	pm_power_off = xen_power_off;
	276	arm_pm_restart = xen_restart;
	277
2e01f166 SS	278	return 0;
	279	}
	280	core_initcall(xen_guest_init);
0ec53ecf SS	281
	282	static irqreturn_t xen_arm_callback(int irq, void *arg)
	283	{
	284	xen_hvm_evtchn_do_upcall();
	285	return IRQ_HANDLED;
	286	}
	287
9a9ab3cc SS	288	static __init void xen_percpu_enable_events(void *unused)
	289	{
	290	enable_percpu_irq(xen_events_irq, 0);
	291	}
	292
0ec53ecf SS	293	static int __init xen_init_events(void)
	294	{
	295	if (!xen_domain() \|\| xen_events_irq < 0)
	296	return -ENODEV;
	297
	298	xen_init_IRQ();
	299
	300	if (request_percpu_irq(xen_events_irq, xen_arm_callback,
2798ba7d	301	"events", &xen_vcpu)) {
0ec53ecf SS	302	pr_err("Error requesting IRQ %d\n", xen_events_irq);
	303	return -EINVAL;
	304	}
	305
9a9ab3cc	306	on_each_cpu(xen_percpu_enable_events, NULL, 0);
0ec53ecf SS	307
	308	return 0;
	309	}
	310	postcore_initcall(xen_init_events);
ea54209b	311
911dec0d KRW	312	/* In the hypervisor.S file. */
	313	EXPORT_SYMBOL_GPL(HYPERVISOR_event_channel_op);
	314	EXPORT_SYMBOL_GPL(HYPERVISOR_grant_table_op);
ab277bbf SS	315	EXPORT_SYMBOL_GPL(HYPERVISOR_xen_version);
	316	EXPORT_SYMBOL_GPL(HYPERVISOR_console_io);
	317	EXPORT_SYMBOL_GPL(HYPERVISOR_sched_op);
	318	EXPORT_SYMBOL_GPL(HYPERVISOR_hvm_op);
	319	EXPORT_SYMBOL_GPL(HYPERVISOR_memory_op);
	320	EXPORT_SYMBOL_GPL(HYPERVISOR_physdev_op);
ea0af613	321	EXPORT_SYMBOL_GPL(HYPERVISOR_vcpu_op);
911dec0d	322	EXPORT_SYMBOL_GPL(privcmd_call);