[linux-block.git] / include / asm-generic / mshyperv.h

/* SPDX-License-Identifier: GPL-2.0 */

/*
 * Linux-specific definitions for managing interactions with Microsoft's
 * Hyper-V hypervisor. The definitions in this file are architecture
 * independent. See arch/<arch>/include/asm/mshyperv.h for definitions
 * that are specific to architecture <arch>.
 *
 * Definitions that are specified in the Hyper-V Top Level Functional
 * Spec (TLFS) should not go in this file, but should instead go in
 * hyperv-tlfs.h.
 *
 * Copyright (C) 2019, Microsoft, Inc.
 *
 * Author : Michael Kelley <mikelley@microsoft.com>
 */

#ifndef _ASM_GENERIC_MSHYPERV_H
#define _ASM_GENERIC_MSHYPERV_H

#include <linux/types.h>
#include <linux/atomic.h>
#include <linux/bitops.h>
#include <linux/cpumask.h>
#include <linux/nmi.h>
#include <asm/ptrace.h>
#include <asm/hyperv-tlfs.h>

#define VTPM_BASE_ADDRESS 0xfed40000

struct ms_hyperv_info {
	u32 features;
	u32 priv_high;
	u32 misc_features;
	u32 hints;
	u32 nested_features;
	u32 max_vp_index;
	u32 max_lp_index;
	u8 vtl;
	union {
		u32 isolation_config_a;
		struct {
			u32 paravisor_present : 1;
			u32 reserved_a1 : 31;
		};
	};
	union {
		u32 isolation_config_b;
		struct {
			u32 cvm_type : 4;
			u32 reserved_b1 : 1;
			u32 shared_gpa_boundary_active : 1;
			u32 shared_gpa_boundary_bits : 6;
			u32 reserved_b2 : 20;
		};
	};
	u64 shared_gpa_boundary;
};
extern struct ms_hyperv_info ms_hyperv;
extern bool hv_nested;

extern void * __percpu *hyperv_pcpu_input_arg;
extern void * __percpu *hyperv_pcpu_output_arg;

extern u64 hv_do_hypercall(u64 control, void *inputaddr, void *outputaddr);
extern u64 hv_do_fast_hypercall8(u16 control, u64 input8);
bool hv_isolation_type_snp(void);
bool hv_isolation_type_tdx(void);

/* Helper functions that provide a consistent pattern for checking Hyper-V hypercall status. */
static inline int hv_result(u64 status)
{
	return status & HV_HYPERCALL_RESULT_MASK;
}

static inline bool hv_result_success(u64 status)
{
	return hv_result(status) == HV_STATUS_SUCCESS;
}

static inline unsigned int hv_repcomp(u64 status)
{
	/* Bits [43:32] of status have 'Reps completed' data. */
	return (status & HV_HYPERCALL_REP_COMP_MASK) >>
			 HV_HYPERCALL_REP_COMP_OFFSET;
}

/*
 * Rep hypercalls. Callers of this functions are supposed to ensure that
 * rep_count and varhead_size comply with Hyper-V hypercall definition.
 */
static inline u64 hv_do_rep_hypercall(u16 code, u16 rep_count, u16 varhead_size,
				      void *input, void *output)
{
	u64 control = code;
	u64 status;
	u16 rep_comp;

	control |= (u64)varhead_size << HV_HYPERCALL_VARHEAD_OFFSET;
	control |= (u64)rep_count << HV_HYPERCALL_REP_COMP_OFFSET;

	do {
		status = hv_do_hypercall(control, input, output);
		if (!hv_result_success(status))
			return status;

		rep_comp = hv_repcomp(status);

		control &= ~HV_HYPERCALL_REP_START_MASK;
		control |= (u64)rep_comp << HV_HYPERCALL_REP_START_OFFSET;

		touch_nmi_watchdog();
	} while (rep_comp < rep_count);

	return status;
}

/* Generate the guest OS identifier as described in the Hyper-V TLFS */
static inline u64 hv_generate_guest_id(u64 kernel_version)
{
	u64 guest_id;

	guest_id = (((u64)HV_LINUX_VENDOR_ID) << 48);
	guest_id |= (kernel_version << 16);

	return guest_id;
}

/* Free the message slot and signal end-of-message if required */
static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
{
	/*
	 * On crash we're reading some other CPU's message page and we need
	 * to be careful: this other CPU may already had cleared the header
	 * and the host may already had delivered some other message there.
	 * In case we blindly write msg->header.message_type we're going
	 * to lose it. We can still lose a message of the same type but
	 * we count on the fact that there can only be one
	 * CHANNELMSG_UNLOAD_RESPONSE and we don't care about other messages
	 * on crash.
	 */
	if (cmpxchg(&msg->header.message_type, old_msg_type,
		    HVMSG_NONE) != old_msg_type)
		return;

	/*
	 * The cmxchg() above does an implicit memory barrier to
	 * ensure the write to MessageType (ie set to
	 * HVMSG_NONE) happens before we read the
	 * MessagePending and EOMing. Otherwise, the EOMing
	 * will not deliver any more messages since there is
	 * no empty slot
	 */
	if (msg->header.message_flags.msg_pending) {
		/*
		 * This will cause message queue rescan to
		 * possibly deliver another msg from the
		 * hypervisor
		 */
		hv_set_register(HV_REGISTER_EOM, 0);
	}
}

void hv_setup_vmbus_handler(void (*handler)(void));
void hv_remove_vmbus_handler(void);
void hv_setup_stimer0_handler(void (*handler)(void));
void hv_remove_stimer0_handler(void);

void hv_setup_kexec_handler(void (*handler)(void));
void hv_remove_kexec_handler(void);
void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));
void hv_remove_crash_handler(void);

extern int vmbus_interrupt;
extern int vmbus_irq;

extern bool hv_root_partition;

#if IS_ENABLED(CONFIG_HYPERV)
/*
 * Hypervisor's notion of virtual processor ID is different from
 * Linux' notion of CPU ID. This information can only be retrieved
 * in the context of the calling CPU. Setup a map for easy access
 * to this information.
 */
extern u32 *hv_vp_index;
extern u32 hv_max_vp_index;

extern u64 (*hv_read_reference_counter)(void);

/* Sentinel value for an uninitialized entry in hv_vp_index array */
#define VP_INVAL	U32_MAX

int __init hv_common_init(void);
void __init hv_common_free(void);
int hv_common_cpu_init(unsigned int cpu);
int hv_common_cpu_die(unsigned int cpu);

void *hv_alloc_hyperv_page(void);
void *hv_alloc_hyperv_zeroed_page(void);
void hv_free_hyperv_page(void *addr);

/**
 * hv_cpu_number_to_vp_number() - Map CPU to VP.
 * @cpu_number: CPU number in Linux terms
 *
 * This function returns the mapping between the Linux processor
 * number and the hypervisor's virtual processor number, useful
 * in making hypercalls and such that talk about specific
 * processors.
 *
 * Return: Virtual processor number in Hyper-V terms
 */
static inline int hv_cpu_number_to_vp_number(int cpu_number)
{
	return hv_vp_index[cpu_number];
}

static inline int __cpumask_to_vpset(struct hv_vpset *vpset,
				    const struct cpumask *cpus,
				    bool (*func)(int cpu))
{
	int cpu, vcpu, vcpu_bank, vcpu_offset, nr_bank = 1;
	int max_vcpu_bank = hv_max_vp_index / HV_VCPUS_PER_SPARSE_BANK;

	/* vpset.valid_bank_mask can represent up to HV_MAX_SPARSE_VCPU_BANKS banks */
	if (max_vcpu_bank >= HV_MAX_SPARSE_VCPU_BANKS)
		return 0;

	/*
	 * Clear all banks up to the maximum possible bank as hv_tlb_flush_ex
	 * structs are not cleared between calls, we risk flushing unneeded
	 * vCPUs otherwise.
	 */
	for (vcpu_bank = 0; vcpu_bank <= max_vcpu_bank; vcpu_bank++)
		vpset->bank_contents[vcpu_bank] = 0;

	/*
	 * Some banks may end up being empty but this is acceptable.
	 */
	for_each_cpu(cpu, cpus) {
		if (func && func(cpu))
			continue;
		vcpu = hv_cpu_number_to_vp_number(cpu);
		if (vcpu == VP_INVAL)
			return -1;
		vcpu_bank = vcpu / HV_VCPUS_PER_SPARSE_BANK;
		vcpu_offset = vcpu % HV_VCPUS_PER_SPARSE_BANK;
		__set_bit(vcpu_offset, (unsigned long *)
			  &vpset->bank_contents[vcpu_bank]);
		if (vcpu_bank >= nr_bank)
			nr_bank = vcpu_bank + 1;
	}
	vpset->valid_bank_mask = GENMASK_ULL(nr_bank - 1, 0);
	return nr_bank;
}

/*
 * Convert a Linux cpumask into a Hyper-V VPset. In the _skip variant,
 * 'func' is called for each CPU present in cpumask.  If 'func' returns
 * true, that CPU is skipped -- i.e., that CPU from cpumask is *not*
 * added to the Hyper-V VPset. If 'func' is NULL, no CPUs are
 * skipped.
 */
static inline int cpumask_to_vpset(struct hv_vpset *vpset,
				    const struct cpumask *cpus)
{
	return __cpumask_to_vpset(vpset, cpus, NULL);
}

static inline int cpumask_to_vpset_skip(struct hv_vpset *vpset,
				    const struct cpumask *cpus,
				    bool (*func)(int cpu))
{
	return __cpumask_to_vpset(vpset, cpus, func);
}

void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die);
bool hv_is_hyperv_initialized(void);
bool hv_is_hibernation_supported(void);
enum hv_isolation_type hv_get_isolation_type(void);
bool hv_is_isolation_supported(void);
bool hv_isolation_type_snp(void);
u64 hv_ghcb_hypercall(u64 control, void *input, void *output, u32 input_size);
u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2);
void hyperv_cleanup(void);
bool hv_query_ext_cap(u64 cap_query);
void hv_setup_dma_ops(struct device *dev, bool coherent);
#else /* CONFIG_HYPERV */
static inline bool hv_is_hyperv_initialized(void) { return false; }
static inline bool hv_is_hibernation_supported(void) { return false; }
static inline void hyperv_cleanup(void) {}
static inline bool hv_is_isolation_supported(void) { return false; }
static inline enum hv_isolation_type hv_get_isolation_type(void)
{
	return HV_ISOLATION_TYPE_NONE;
}
#endif /* CONFIG_HYPERV */

#endif
Commit	Line	Data
765e33f5 MK	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	/*
	4	* Linux-specific definitions for managing interactions with Microsoft's
	5	* Hyper-V hypervisor. The definitions in this file are architecture
	6	* independent. See arch/<arch>/include/asm/mshyperv.h for definitions
	7	* that are specific to architecture <arch>.
	8	*
	9	* Definitions that are specified in the Hyper-V Top Level Functional
	10	* Spec (TLFS) should not go in this file, but should instead go in
	11	* hyperv-tlfs.h.
	12	*
	13	* Copyright (C) 2019, Microsoft, Inc.
	14	*
	15	* Author : Michael Kelley <mikelley@microsoft.com>
	16	*/
	17
	18	#ifndef _ASM_GENERIC_MSHYPERV_H
	19	#define _ASM_GENERIC_MSHYPERV_H
	20
	21	#include <linux/types.h>
	22	#include <linux/atomic.h>
	23	#include <linux/bitops.h>
	24	#include <linux/cpumask.h>
ba3f5839	25	#include <linux/nmi.h>
765e33f5 MK	26	#include <asm/ptrace.h>
	27	#include <asm/hyperv-tlfs.h>
	28
812b0597 MK	29	#define VTPM_BASE_ADDRESS 0xfed40000
812b0597 MK	30
765e33f5 MK	31	struct ms_hyperv_info {
765e33f5 MK	32	u32 features;
6dc2a774	33	u32 priv_high;
765e33f5 MK	34	u32 misc_features;
	35	u32 hints;
	36	u32 nested_features;
	37	u32 max_vp_index;
	38	u32 max_lp_index;
cfc7461a	39	u8 vtl;
d6e2d652 TL	40	union {
	41	u32 isolation_config_a;
	42	struct {
	43	u32 paravisor_present : 1;
	44	u32 reserved_a1 : 31;
	45	};
	46	};
af788f35 TL	47	union {
	48	u32 isolation_config_b;
	49	struct {
	50	u32 cvm_type : 4;
d6e2d652	51	u32 reserved_b1 : 1;
af788f35 TL	52	u32 shared_gpa_boundary_active : 1;
af788f35 TL	53	u32 shared_gpa_boundary_bits : 6;
d6e2d652	54	u32 reserved_b2 : 20;
af788f35 TL	55	};
	56	};
	57	u64 shared_gpa_boundary;
765e33f5 MK	58	};
765e33f5 MK	59	extern struct ms_hyperv_info ms_hyperv;
c4bdf94f	60	extern bool hv_nested;
765e33f5	61
db3c65bc MK	62	extern void * __percpu *hyperv_pcpu_input_arg;
db3c65bc MK	63	extern void * __percpu *hyperv_pcpu_output_arg;
afca4d95	64
765e33f5 MK	65	extern u64 hv_do_hypercall(u64 control, void inputaddr, void outputaddr);
765e33f5 MK	66	extern u64 hv_do_fast_hypercall8(u16 control, u64 input8);
e3131f1c	67	bool hv_isolation_type_snp(void);
08e9d120	68	bool hv_isolation_type_tdx(void);
765e33f5	69
753ed9c9 JS	70	/* Helper functions that provide a consistent pattern for checking Hyper-V hypercall status. */
	71	static inline int hv_result(u64 status)
	72	{
	73	return status & HV_HYPERCALL_RESULT_MASK;
	74	}
	75
	76	static inline bool hv_result_success(u64 status)
	77	{
	78	return hv_result(status) == HV_STATUS_SUCCESS;
	79	}
	80
	81	static inline unsigned int hv_repcomp(u64 status)
	82	{
	83	/* Bits [43:32] of status have 'Reps completed' data. */
	84	return (status & HV_HYPERCALL_REP_COMP_MASK) >>
	85	HV_HYPERCALL_REP_COMP_OFFSET;
	86	}
	87
6523592c JS	88	/*
	89	* Rep hypercalls. Callers of this functions are supposed to ensure that
	90	* rep_count and varhead_size comply with Hyper-V hypercall definition.
	91	*/
	92	static inline u64 hv_do_rep_hypercall(u16 code, u16 rep_count, u16 varhead_size,
	93	void input, void output)
	94	{
	95	u64 control = code;
	96	u64 status;
	97	u16 rep_comp;
	98
	99	control \|= (u64)varhead_size << HV_HYPERCALL_VARHEAD_OFFSET;
	100	control \|= (u64)rep_count << HV_HYPERCALL_REP_COMP_OFFSET;
	101
	102	do {
	103	status = hv_do_hypercall(control, input, output);
753ed9c9	104	if (!hv_result_success(status))
6523592c JS	105	return status;
6523592c JS	106
753ed9c9	107	rep_comp = hv_repcomp(status);
6523592c JS	108
	109	control &= ~HV_HYPERCALL_REP_START_MASK;
	110	control \|= (u64)rep_comp << HV_HYPERCALL_REP_START_OFFSET;
	111
	112	touch_nmi_watchdog();
	113	} while (rep_comp < rep_count);
	114
	115	return status;
	116	}
765e33f5 MK	117
765e33f5 MK	118	/* Generate the guest OS identifier as described in the Hyper-V TLFS */
d5ebde1e	119	static inline u64 hv_generate_guest_id(u64 kernel_version)
765e33f5	120	{
d5ebde1e	121	u64 guest_id;
765e33f5	122
d5ebde1e	123	guest_id = (((u64)HV_LINUX_VENDOR_ID) << 48);
765e33f5	124	guest_id \|= (kernel_version << 16);
765e33f5 MK	125
	126	return guest_id;
	127	}
	128
765e33f5 MK	129	/* Free the message slot and signal end-of-message if required */
	130	static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
	131	{
	132	/*
	133	* On crash we're reading some other CPU's message page and we need
	134	* to be careful: this other CPU may already had cleared the header
	135	* and the host may already had delivered some other message there.
	136	* In case we blindly write msg->header.message_type we're going
	137	* to lose it. We can still lose a message of the same type but
	138	* we count on the fact that there can only be one
	139	* CHANNELMSG_UNLOAD_RESPONSE and we don't care about other messages
	140	* on crash.
	141	*/
	142	if (cmpxchg(&msg->header.message_type, old_msg_type,
	143	HVMSG_NONE) != old_msg_type)
	144	return;
	145
	146	/*
	147	* The cmxchg() above does an implicit memory barrier to
	148	* ensure the write to MessageType (ie set to
	149	* HVMSG_NONE) happens before we read the
	150	* MessagePending and EOMing. Otherwise, the EOMing
	151	* will not deliver any more messages since there is
	152	* no empty slot
	153	*/
	154	if (msg->header.message_flags.msg_pending) {
	155	/*
	156	* This will cause message queue rescan to
	157	* possibly deliver another msg from the
	158	* hypervisor
	159	*/
f3c5e63c	160	hv_set_register(HV_REGISTER_EOM, 0);
765e33f5 MK	161	}
	162	}
	163
d608715d MK	164	void hv_setup_vmbus_handler(void (*handler)(void));
d608715d MK	165	void hv_remove_vmbus_handler(void);
a620bbaa MK	166	void hv_setup_stimer0_handler(void (*handler)(void));
a620bbaa MK	167	void hv_remove_stimer0_handler(void);
765e33f5 MK	168
	169	void hv_setup_kexec_handler(void (*handler)(void));
	170	void hv_remove_kexec_handler(void);
	171	void hv_setup_crash_handler(void (handler)(struct pt_regs regs));
	172	void hv_remove_crash_handler(void);
	173
626b901f	174	extern int vmbus_interrupt;
d608715d	175	extern int vmbus_irq;
626b901f	176
afca4d95 MK	177	extern bool hv_root_partition;
afca4d95 MK	178
765e33f5 MK	179	#if IS_ENABLED(CONFIG_HYPERV)
	180	/*
	181	* Hypervisor's notion of virtual processor ID is different from
	182	* Linux' notion of CPU ID. This information can only be retrieved
	183	* in the context of the calling CPU. Setup a map for easy access
	184	* to this information.
	185	*/
	186	extern u32 *hv_vp_index;
	187	extern u32 hv_max_vp_index;
	188
31e5e646 MK	189	extern u64 (*hv_read_reference_counter)(void);
31e5e646 MK	190
765e33f5 MK	191	/* Sentinel value for an uninitialized entry in hv_vp_index array */
	192	#define VP_INVAL U32_MAX
	193
afca4d95 MK	194	int __init hv_common_init(void);
	195	void __init hv_common_free(void);
	196	int hv_common_cpu_init(unsigned int cpu);
	197	int hv_common_cpu_die(unsigned int cpu);
	198
ca48739e MK	199	void *hv_alloc_hyperv_page(void);
ca48739e MK	200	void *hv_alloc_hyperv_zeroed_page(void);
a6fe0438	201	void hv_free_hyperv_page(void *addr);
ca48739e	202
765e33f5 MK	203	/**
	204	* hv_cpu_number_to_vp_number() - Map CPU to VP.
	205	* @cpu_number: CPU number in Linux terms
	206	*
	207	* This function returns the mapping between the Linux processor
	208	* number and the hypervisor's virtual processor number, useful
	209	* in making hypercalls and such that talk about specific
	210	* processors.
	211	*
	212	* Return: Virtual processor number in Hyper-V terms
	213	*/
	214	static inline int hv_cpu_number_to_vp_number(int cpu_number)
	215	{
	216	return hv_vp_index[cpu_number];
	217	}
	218
7ad9bb9d WL	219	static inline int __cpumask_to_vpset(struct hv_vpset *vpset,
7ad9bb9d WL	220	const struct cpumask *cpus,
d7b6ba96	221	bool (*func)(int cpu))
765e33f5 MK	222	{
765e33f5 MK	223	int cpu, vcpu, vcpu_bank, vcpu_offset, nr_bank = 1;
bd19c94a	224	int max_vcpu_bank = hv_max_vp_index / HV_VCPUS_PER_SPARSE_BANK;
765e33f5	225
bd19c94a VK	226	/* vpset.valid_bank_mask can represent up to HV_MAX_SPARSE_VCPU_BANKS banks */
bd19c94a VK	227	if (max_vcpu_bank >= HV_MAX_SPARSE_VCPU_BANKS)
765e33f5 MK	228	return 0;
	229
	230	/*
	231	* Clear all banks up to the maximum possible bank as hv_tlb_flush_ex
	232	* structs are not cleared between calls, we risk flushing unneeded
	233	* vCPUs otherwise.
	234	*/
bd19c94a	235	for (vcpu_bank = 0; vcpu_bank <= max_vcpu_bank; vcpu_bank++)
765e33f5 MK	236	vpset->bank_contents[vcpu_bank] = 0;
	237
	238	/*
	239	* Some banks may end up being empty but this is acceptable.
	240	*/
	241	for_each_cpu(cpu, cpus) {
d7b6ba96	242	if (func && func(cpu))
7ad9bb9d	243	continue;
765e33f5 MK	244	vcpu = hv_cpu_number_to_vp_number(cpu);
	245	if (vcpu == VP_INVAL)
	246	return -1;
bd19c94a VK	247	vcpu_bank = vcpu / HV_VCPUS_PER_SPARSE_BANK;
bd19c94a VK	248	vcpu_offset = vcpu % HV_VCPUS_PER_SPARSE_BANK;
765e33f5 MK	249	__set_bit(vcpu_offset, (unsigned long *)
	250	&vpset->bank_contents[vcpu_bank]);
	251	if (vcpu_bank >= nr_bank)
	252	nr_bank = vcpu_bank + 1;
	253	}
	254	vpset->valid_bank_mask = GENMASK_ULL(nr_bank - 1, 0);
	255	return nr_bank;
	256	}
	257
d7b6ba96 MK	258	/*
	259	* Convert a Linux cpumask into a Hyper-V VPset. In the _skip variant,
	260	* 'func' is called for each CPU present in cpumask. If 'func' returns
	261	* true, that CPU is skipped -- i.e., that CPU from cpumask is not
	262	* added to the Hyper-V VPset. If 'func' is NULL, no CPUs are
	263	* skipped.
	264	*/
7ad9bb9d WL	265	static inline int cpumask_to_vpset(struct hv_vpset *vpset,
	266	const struct cpumask *cpus)
	267	{
d7b6ba96	268	return __cpumask_to_vpset(vpset, cpus, NULL);
7ad9bb9d WL	269	}
7ad9bb9d WL	270
d7b6ba96 MK	271	static inline int cpumask_to_vpset_skip(struct hv_vpset *vpset,
	272	const struct cpumask *cpus,
	273	bool (*func)(int cpu))
7ad9bb9d	274	{
d7b6ba96	275	return __cpumask_to_vpset(vpset, cpus, func);
7ad9bb9d WL	276	}
7ad9bb9d WL	277
f3a99e76	278	void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die);
765e33f5	279	bool hv_is_hyperv_initialized(void);
b96f8653	280	bool hv_is_hibernation_supported(void);
a6c76bb0 APM	281	enum hv_isolation_type hv_get_isolation_type(void);
a6c76bb0 APM	282	bool hv_is_isolation_supported(void);
0cc4f6d9	283	bool hv_isolation_type_snp(void);
20c89a55	284	u64 hv_ghcb_hypercall(u64 control, void input, void output, u32 input_size);
d6e0228d	285	u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2);
765e33f5	286	void hyperv_cleanup(void);
6dc2a774	287	bool hv_query_ext_cap(u64 cap_query);
37200078	288	void hv_setup_dma_ops(struct device *dev, bool coherent);
765e33f5 MK	289	#else /* CONFIG_HYPERV */
765e33f5 MK	290	static inline bool hv_is_hyperv_initialized(void) { return false; }
b96f8653	291	static inline bool hv_is_hibernation_supported(void) { return false; }
765e33f5	292	static inline void hyperv_cleanup(void) {}
0cc4f6d9 TL	293	static inline bool hv_is_isolation_supported(void) { return false; }
	294	static inline enum hv_isolation_type hv_get_isolation_type(void)
	295	{
	296	return HV_ISOLATION_TYPE_NONE;
	297	}
765e33f5 MK	298	#endif /* CONFIG_HYPERV */
765e33f5 MK	299
765e33f5	300	#endif