[mirror_ubuntu-bionic-kernel.git] / arch / s390 / include / asm / kvm_host.h

/*
 * definition for kernel virtual machines on s390
 *
 * Copyright IBM Corp. 2008, 2009
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (version 2 only)
 * as published by the Free Software Foundation.
 *
 *    Author(s): Carsten Otte <cotte@de.ibm.com>
 */


#ifndef ASM_KVM_HOST_H
#define ASM_KVM_HOST_H
#include <linux/hrtimer.h>
#include <linux/interrupt.h>
#include <linux/kvm_host.h>
#include <linux/kvm.h>
#include <asm/debug.h>
#include <asm/cpu.h>
#include <asm/isc.h>

#define KVM_MAX_VCPUS 64
#define KVM_USER_MEM_SLOTS 32

/*
 * These seem to be used for allocating ->chip in the routing table,
 * which we don't use. 4096 is an out-of-thin-air value. If we need
 * to look at ->chip later on, we'll need to revisit this.
 */
#define KVM_NR_IRQCHIPS 1
#define KVM_IRQCHIP_NUM_PINS 4096

struct sca_entry {
	atomic_t scn;
	__u32	reserved;
	__u64	sda;
	__u64	reserved2[2];
} __attribute__((packed));


struct sca_block {
	__u64	ipte_control;
	__u64	reserved[5];
	__u64	mcn;
	__u64	reserved2;
	struct sca_entry cpu[64];
} __attribute__((packed));

#define CPUSTAT_STOPPED    0x80000000
#define CPUSTAT_WAIT       0x10000000
#define CPUSTAT_ECALL_PEND 0x08000000
#define CPUSTAT_STOP_INT   0x04000000
#define CPUSTAT_IO_INT     0x02000000
#define CPUSTAT_EXT_INT    0x01000000
#define CPUSTAT_RUNNING    0x00800000
#define CPUSTAT_RETAINED   0x00400000
#define CPUSTAT_TIMING_SUB 0x00020000
#define CPUSTAT_SIE_SUB    0x00010000
#define CPUSTAT_RRF        0x00008000
#define CPUSTAT_SLSV       0x00004000
#define CPUSTAT_SLSR       0x00002000
#define CPUSTAT_ZARCH      0x00000800
#define CPUSTAT_MCDS       0x00000100
#define CPUSTAT_SM         0x00000080
#define CPUSTAT_G          0x00000008
#define CPUSTAT_GED        0x00000004
#define CPUSTAT_J          0x00000002
#define CPUSTAT_P          0x00000001

struct kvm_s390_sie_block {
	atomic_t cpuflags;		/* 0x0000 */
	__u32	prefix;			/* 0x0004 */
	__u8	reserved08[4];		/* 0x0008 */
#define PROG_IN_SIE (1<<0)
	__u32	prog0c;			/* 0x000c */
	__u8	reserved10[16];		/* 0x0010 */
#define PROG_BLOCK_SIE 0x00000001
	atomic_t prog20;		/* 0x0020 */
	__u8	reserved24[4];		/* 0x0024 */
	__u64	cputm;			/* 0x0028 */
	__u64	ckc;			/* 0x0030 */
	__u64	epoch;			/* 0x0038 */
	__u8	reserved40[4];		/* 0x0040 */
#define LCTL_CR0	0x8000
#define LCTL_CR6	0x0200
#define LCTL_CR14	0x0002
	__u16   lctl;			/* 0x0044 */
	__s16	icpua;			/* 0x0046 */
#define ICTL_LPSW 0x00400000
#define ICTL_ISKE 0x00004000
#define ICTL_SSKE 0x00002000
#define ICTL_RRBE 0x00001000
	__u32	ictl;			/* 0x0048 */
	__u32	eca;			/* 0x004c */
	__u8	icptcode;		/* 0x0050 */
	__u8	reserved51;		/* 0x0051 */
	__u16	ihcpu;			/* 0x0052 */
	__u8	reserved54[2];		/* 0x0054 */
	__u16	ipa;			/* 0x0056 */
	__u32	ipb;			/* 0x0058 */
	__u32	scaoh;			/* 0x005c */
	__u8	reserved60;		/* 0x0060 */
	__u8	ecb;			/* 0x0061 */
	__u8    ecb2;                   /* 0x0062 */
	__u8    reserved63[1];          /* 0x0063 */
	__u32	scaol;			/* 0x0064 */
	__u8	reserved68[4];		/* 0x0068 */
	__u32	todpr;			/* 0x006c */
	__u8	reserved70[32];		/* 0x0070 */
	psw_t	gpsw;			/* 0x0090 */
	__u64	gg14;			/* 0x00a0 */
	__u64	gg15;			/* 0x00a8 */
	__u8	reservedb0[30];		/* 0x00b0 */
	__u16   iprcc;			/* 0x00ce */
	__u8	reservedd0[48];		/* 0x00d0 */
	__u64	gcr[16];		/* 0x0100 */
	__u64	gbea;			/* 0x0180 */
	__u8	reserved188[24];	/* 0x0188 */
	__u32	fac;			/* 0x01a0 */
	__u8	reserved1a4[20];	/* 0x01a4 */
	__u64	cbrlo;			/* 0x01b8 */
	__u8	reserved1c0[30];	/* 0x01c0 */
	__u64	pp;			/* 0x01de */
	__u8	reserved1e6[2];		/* 0x01e6 */
	__u64	itdba;			/* 0x01e8 */
	__u8	reserved1f0[16];	/* 0x01f0 */
} __attribute__((packed));

struct kvm_s390_itdb {
	__u8	data[256];
} __packed;

struct sie_page {
	struct kvm_s390_sie_block sie_block;
	__u8 reserved200[1024];		/* 0x0200 */
	struct kvm_s390_itdb itdb;	/* 0x0600 */
	__u8 reserved700[2304];		/* 0x0700 */
} __packed;

struct kvm_vcpu_stat {
	u32 exit_userspace;
	u32 exit_null;
	u32 exit_external_request;
	u32 exit_external_interrupt;
	u32 exit_stop_request;
	u32 exit_validity;
	u32 exit_instruction;
	u32 instruction_lctl;
	u32 instruction_lctlg;
	u32 exit_program_interruption;
	u32 exit_instr_and_program;
	u32 deliver_external_call;
	u32 deliver_emergency_signal;
	u32 deliver_service_signal;
	u32 deliver_virtio_interrupt;
	u32 deliver_stop_signal;
	u32 deliver_prefix_signal;
	u32 deliver_restart_signal;
	u32 deliver_program_int;
	u32 deliver_io_int;
	u32 exit_wait_state;
	u32 instruction_pfmf;
	u32 instruction_stidp;
	u32 instruction_spx;
	u32 instruction_stpx;
	u32 instruction_stap;
	u32 instruction_storage_key;
	u32 instruction_stsch;
	u32 instruction_chsc;
	u32 instruction_stsi;
	u32 instruction_stfl;
	u32 instruction_tprot;
	u32 instruction_essa;
	u32 instruction_sigp_sense;
	u32 instruction_sigp_sense_running;
	u32 instruction_sigp_external_call;
	u32 instruction_sigp_emergency;
	u32 instruction_sigp_stop;
	u32 instruction_sigp_arch;
	u32 instruction_sigp_prefix;
	u32 instruction_sigp_restart;
	u32 diagnose_10;
	u32 diagnose_44;
	u32 diagnose_9c;
};

#define PGM_OPERATION            0x01
#define PGM_PRIVILEGED_OP	 0x02
#define PGM_EXECUTE              0x03
#define PGM_PROTECTION           0x04
#define PGM_ADDRESSING           0x05
#define PGM_SPECIFICATION        0x06
#define PGM_DATA                 0x07

struct kvm_s390_interrupt_info {
	struct list_head list;
	u64	type;
	union {
		struct kvm_s390_io_info io;
		struct kvm_s390_ext_info ext;
		struct kvm_s390_pgm_info pgm;
		struct kvm_s390_emerg_info emerg;
		struct kvm_s390_extcall_info extcall;
		struct kvm_s390_prefix_info prefix;
		struct kvm_s390_mchk_info mchk;
	};
};

/* for local_interrupt.action_flags */
#define ACTION_STORE_ON_STOP		(1<<0)
#define ACTION_STOP_ON_STOP		(1<<1)

struct kvm_s390_local_interrupt {
	spinlock_t lock;
	struct list_head list;
	atomic_t active;
	struct kvm_s390_float_interrupt *float_int;
	int timer_due; /* event indicator for waitqueue below */
	wait_queue_head_t *wq;
	atomic_t *cpuflags;
	unsigned int action_bits;
};

struct kvm_s390_float_interrupt {
	spinlock_t lock;
	struct list_head list;
	atomic_t active;
	int next_rr_cpu;
	unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
	unsigned int irq_count;
};


struct kvm_vcpu_arch {
	struct kvm_s390_sie_block *sie_block;
	s390_fp_regs      host_fpregs;
	unsigned int      host_acrs[NUM_ACRS];
	s390_fp_regs      guest_fpregs;
	struct kvm_s390_local_interrupt local_int;
	struct hrtimer    ckc_timer;
	struct tasklet_struct tasklet;
	union  {
		struct cpuid	cpu_id;
		u64		stidp_data;
	};
	struct gmap *gmap;
#define KVM_S390_PFAULT_TOKEN_INVALID	(-1UL)
	unsigned long pfault_token;
	unsigned long pfault_select;
	unsigned long pfault_compare;
};

struct kvm_vm_stat {
	u32 remote_tlb_flush;
};

struct kvm_arch_memory_slot {
};

struct s390_map_info {
	struct list_head list;
	__u64 guest_addr;
	__u64 addr;
	struct page *page;
};

struct s390_io_adapter {
	unsigned int id;
	int isc;
	bool maskable;
	bool masked;
	bool swap;
	struct rw_semaphore maps_lock;
	struct list_head maps;
	atomic_t nr_maps;
};

#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
#define MAX_S390_ADAPTER_MAPS 256

struct kvm_arch{
	struct sca_block *sca;
	debug_info_t *dbf;
	struct kvm_s390_float_interrupt float_int;
	struct kvm_device *flic;
	struct gmap *gmap;
	int css_support;
	int use_irqchip;
	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
};

#define KVM_HVA_ERR_BAD		(-1UL)
#define KVM_HVA_ERR_RO_BAD	(-2UL)

static inline bool kvm_is_error_hva(unsigned long addr)
{
	return IS_ERR_VALUE(addr);
}

#define ASYNC_PF_PER_VCPU	64
struct kvm_vcpu;
struct kvm_async_pf;
struct kvm_arch_async_pf {
	unsigned long pfault_token;
};

bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);

void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
			       struct kvm_async_pf *work);

void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
				     struct kvm_async_pf *work);

void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
				 struct kvm_async_pf *work);

extern int sie64a(struct kvm_s390_sie_block *, u64 *);
extern char sie_exit;
#endif
Commit	Line	Data
b0c632db	1	/*
a53c8fab	2	* definition for kernel virtual machines on s390
b0c632db	3	*
a53c8fab	4	* Copyright IBM Corp. 2008, 2009
b0c632db HC	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License (version 2 only)
	8	* as published by the Free Software Foundation.
	9	*
	10	* Author(s): Carsten Otte <cotte@de.ibm.com>
	11	*/
	12
	13
	14	#ifndef ASM_KVM_HOST_H
	15	#define ASM_KVM_HOST_H
ca872302 CB	16	#include <linux/hrtimer.h>
ca872302 CB	17	#include <linux/interrupt.h>
b0c632db	18	#include <linux/kvm_host.h>
81aa8efe	19	#include <linux/kvm.h>
b0c632db	20	#include <asm/debug.h>
e86a6ed6	21	#include <asm/cpu.h>
841b91c5	22	#include <asm/isc.h>
b0c632db HC	23
b0c632db HC	24	#define KVM_MAX_VCPUS 64
bbacc0c1	25	#define KVM_USER_MEM_SLOTS 32
b0c632db	26
84223598 CH	27	/*
	28	* These seem to be used for allocating ->chip in the routing table,
	29	* which we don't use. 4096 is an out-of-thin-air value. If we need
	30	* to look at ->chip later on, we'll need to revisit this.
	31	*/
	32	#define KVM_NR_IRQCHIPS 1
	33	#define KVM_IRQCHIP_NUM_PINS 4096
	34
b0c632db HC	35	struct sca_entry {
b0c632db HC	36	atomic_t scn;
fc34531d	37	__u32 reserved;
b0c632db HC	38	__u64 sda;
	39	__u64 reserved2[2];
	40	} __attribute__((packed));
	41
	42
	43	struct sca_block {
	44	__u64 ipte_control;
	45	__u64 reserved[5];
	46	__u64 mcn;
	47	__u64 reserved2;
	48	struct sca_entry cpu[64];
	49	} __attribute__((packed));
	50
9e6dabef	51	#define CPUSTAT_STOPPED 0x80000000
b0c632db HC	52	#define CPUSTAT_WAIT 0x10000000
	53	#define CPUSTAT_ECALL_PEND 0x08000000
	54	#define CPUSTAT_STOP_INT 0x04000000
	55	#define CPUSTAT_IO_INT 0x02000000
	56	#define CPUSTAT_EXT_INT 0x01000000
	57	#define CPUSTAT_RUNNING 0x00800000
	58	#define CPUSTAT_RETAINED 0x00400000
	59	#define CPUSTAT_TIMING_SUB 0x00020000
	60	#define CPUSTAT_SIE_SUB 0x00010000
	61	#define CPUSTAT_RRF 0x00008000
	62	#define CPUSTAT_SLSV 0x00004000
	63	#define CPUSTAT_SLSR 0x00002000
	64	#define CPUSTAT_ZARCH 0x00000800
	65	#define CPUSTAT_MCDS 0x00000100
	66	#define CPUSTAT_SM 0x00000080
	67	#define CPUSTAT_G 0x00000008
69d0d3a3	68	#define CPUSTAT_GED 0x00000004
b0c632db HC	69	#define CPUSTAT_J 0x00000002
	70	#define CPUSTAT_P 0x00000001
	71
180c12fb	72	struct kvm_s390_sie_block {
b0c632db HC	73	atomic_t cpuflags; /* 0x0000 */
b0c632db HC	74	__u32 prefix; /* 0x0004 */
95d38fd0 CB	75	__u8 reserved08[4]; /* 0x0008 */
	76	#define PROG_IN_SIE (1<<0)
	77	__u32 prog0c; /* 0x000c */
49b99e1e CB	78	__u8 reserved10[16]; /* 0x0010 */
	79	#define PROG_BLOCK_SIE 0x00000001
	80	atomic_t prog20; /* 0x0020 */
	81	__u8 reserved24[4]; /* 0x0024 */
b0c632db HC	82	__u64 cputm; /* 0x0028 */
	83	__u64 ckc; /* 0x0030 */
	84	__u64 epoch; /* 0x0038 */
	85	__u8 reserved40[4]; /* 0x0040 */
ba5c1e9b	86	#define LCTL_CR0 0x8000
d8346b7d	87	#define LCTL_CR6 0x0200
48a3e950	88	#define LCTL_CR14 0x0002
b0c632db HC	89	__u16 lctl; /* 0x0044 */
b0c632db HC	90	__s16 icpua; /* 0x0046 */
48a3e950	91	#define ICTL_LPSW 0x00400000
693ffc08 DD	92	#define ICTL_ISKE 0x00004000
	93	#define ICTL_SSKE 0x00002000
	94	#define ICTL_RRBE 0x00001000
b0c632db HC	95	__u32 ictl; /* 0x0048 */
	96	__u32 eca; /* 0x004c */
	97	__u8 icptcode; /* 0x0050 */
	98	__u8 reserved51; /* 0x0051 */
	99	__u16 ihcpu; /* 0x0052 */
	100	__u8 reserved54[2]; /* 0x0054 */
	101	__u16 ipa; /* 0x0056 */
	102	__u32 ipb; /* 0x0058 */
	103	__u32 scaoh; /* 0x005c */
	104	__u8 reserved60; /* 0x0060 */
	105	__u8 ecb; /* 0x0061 */
69d0d3a3 CB	106	__u8 ecb2; /* 0x0062 */
69d0d3a3 CB	107	__u8 reserved63[1]; /* 0x0063 */
b0c632db HC	108	__u32 scaol; /* 0x0064 */
	109	__u8 reserved68[4]; /* 0x0068 */
	110	__u32 todpr; /* 0x006c */
092670cd	111	__u8 reserved70[32]; /* 0x0070 */
b0c632db HC	112	psw_t gpsw; /* 0x0090 */
	113	__u64 gg14; /* 0x00a0 */
	114	__u64 gg15; /* 0x00a8 */
e28acfea CB	115	__u8 reservedb0[30]; /* 0x00b0 */
	116	__u16 iprcc; /* 0x00ce */
	117	__u8 reservedd0[48]; /* 0x00d0 */
b0c632db HC	118	__u64 gcr[16]; /* 0x0100 */
b0c632db HC	119	__u64 gbea; /* 0x0180 */
ef50f7ac CB	120	__u8 reserved188[24]; /* 0x0188 */
ef50f7ac CB	121	__u32 fac; /* 0x01a0 */
b31288fa KW	122	__u8 reserved1a4[20]; /* 0x01a4 */
b31288fa KW	123	__u64 cbrlo; /* 0x01b8 */
7cbb39d4	124	__u8 reserved1c0[30]; /* 0x01c0 */
672550fb CB	125	__u64 pp; /* 0x01de */
672550fb CB	126	__u8 reserved1e6[2]; /* 0x01e6 */
7feb6bb8 MM	127	__u64 itdba; /* 0x01e8 */
7feb6bb8 MM	128	__u8 reserved1f0[16]; /* 0x01f0 */
b0c632db HC	129	} __attribute__((packed));
b0c632db HC	130
7feb6bb8 MM	131	struct kvm_s390_itdb {
	132	__u8 data[256];
	133	} __packed;
	134
	135	struct sie_page {
	136	struct kvm_s390_sie_block sie_block;
	137	__u8 reserved200[1024]; /* 0x0200 */
	138	struct kvm_s390_itdb itdb; /* 0x0600 */
	139	__u8 reserved700[2304]; /* 0x0700 */
	140	} __packed;
	141
b0c632db HC	142	struct kvm_vcpu_stat {
b0c632db HC	143	u32 exit_userspace;
0eaeafa1	144	u32 exit_null;
8f2abe6a CB	145	u32 exit_external_request;
	146	u32 exit_external_interrupt;
	147	u32 exit_stop_request;
	148	u32 exit_validity;
ba5c1e9b CO	149	u32 exit_instruction;
ba5c1e9b CO	150	u32 instruction_lctl;
f5e10b09	151	u32 instruction_lctlg;
ba5c1e9b CO	152	u32 exit_program_interruption;
ba5c1e9b CO	153	u32 exit_instr_and_program;
7697e71f	154	u32 deliver_external_call;
ba5c1e9b CO	155	u32 deliver_emergency_signal;
	156	u32 deliver_service_signal;
	157	u32 deliver_virtio_interrupt;
	158	u32 deliver_stop_signal;
	159	u32 deliver_prefix_signal;
	160	u32 deliver_restart_signal;
	161	u32 deliver_program_int;
d8346b7d	162	u32 deliver_io_int;
ba5c1e9b	163	u32 exit_wait_state;
69d0d3a3	164	u32 instruction_pfmf;
453423dc CB	165	u32 instruction_stidp;
	166	u32 instruction_spx;
	167	u32 instruction_stpx;
	168	u32 instruction_stap;
	169	u32 instruction_storage_key;
	170	u32 instruction_stsch;
	171	u32 instruction_chsc;
	172	u32 instruction_stsi;
	173	u32 instruction_stfl;
bb25b9ba	174	u32 instruction_tprot;
b31288fa	175	u32 instruction_essa;
5288fbf0	176	u32 instruction_sigp_sense;
bd59d3a4	177	u32 instruction_sigp_sense_running;
7697e71f	178	u32 instruction_sigp_external_call;
5288fbf0 CB	179	u32 instruction_sigp_emergency;
	180	u32 instruction_sigp_stop;
	181	u32 instruction_sigp_arch;
	182	u32 instruction_sigp_prefix;
	183	u32 instruction_sigp_restart;
388186bc	184	u32 diagnose_10;
e28acfea	185	u32 diagnose_44;
41628d33	186	u32 diagnose_9c;
b0c632db HC	187	};
b0c632db HC	188
ba5c1e9b	189	#define PGM_OPERATION 0x01
208dd756	190	#define PGM_PRIVILEGED_OP 0x02
ba5c1e9b CO	191	#define PGM_EXECUTE 0x03
	192	#define PGM_PROTECTION 0x04
	193	#define PGM_ADDRESSING 0x05
	194	#define PGM_SPECIFICATION 0x06
	195	#define PGM_DATA 0x07
	196
180c12fb	197	struct kvm_s390_interrupt_info {
ba5c1e9b CO	198	struct list_head list;
	199	u64 type;
	200	union {
180c12fb CB	201	struct kvm_s390_io_info io;
	202	struct kvm_s390_ext_info ext;
	203	struct kvm_s390_pgm_info pgm;
8bb3a2eb	204	struct kvm_s390_emerg_info emerg;
7697e71f	205	struct kvm_s390_extcall_info extcall;
180c12fb	206	struct kvm_s390_prefix_info prefix;
48a3e950	207	struct kvm_s390_mchk_info mchk;
ba5c1e9b CO	208	};
	209	};
	210
5288fbf0	211	/* for local_interrupt.action_flags */
9ace903d CE	212	#define ACTION_STORE_ON_STOP (1<<0)
9ace903d CE	213	#define ACTION_STOP_ON_STOP (1<<1)
5288fbf0	214
180c12fb	215	struct kvm_s390_local_interrupt {
ba5c1e9b CO	216	spinlock_t lock;
	217	struct list_head list;
	218	atomic_t active;
180c12fb	219	struct kvm_s390_float_interrupt *float_int;
ba5c1e9b	220	int timer_due; /* event indicator for waitqueue below */
d0321a24	221	wait_queue_head_t *wq;
5288fbf0 CB	222	atomic_t *cpuflags;
5288fbf0 CB	223	unsigned int action_bits;
ba5c1e9b CO	224	};
ba5c1e9b CO	225
180c12fb	226	struct kvm_s390_float_interrupt {
ba5c1e9b CO	227	spinlock_t lock;
	228	struct list_head list;
	229	atomic_t active;
	230	int next_rr_cpu;
609433fb	231	unsigned long idle_mask[BITS_TO_LONGS(KVM_MAX_VCPUS)];
a91b8ebe	232	unsigned int irq_count;
ba5c1e9b CO	233	};
	234
	235
b0c632db	236	struct kvm_vcpu_arch {
180c12fb	237	struct kvm_s390_sie_block *sie_block;
b0c632db HC	238	s390_fp_regs host_fpregs;
	239	unsigned int host_acrs[NUM_ACRS];
	240	s390_fp_regs guest_fpregs;
180c12fb	241	struct kvm_s390_local_interrupt local_int;
ca872302 CB	242	struct hrtimer ckc_timer;
ca872302 CB	243	struct tasklet_struct tasklet;
453423dc	244	union {
e86a6ed6 HC	245	struct cpuid cpu_id;
e86a6ed6 HC	246	u64 stidp_data;
453423dc	247	};
598841ca	248	struct gmap *gmap;
3c038e6b DD	249	#define KVM_S390_PFAULT_TOKEN_INVALID (-1UL)
	250	unsigned long pfault_token;
	251	unsigned long pfault_select;
	252	unsigned long pfault_compare;
b0c632db HC	253	};
	254
	255	struct kvm_vm_stat {
	256	u32 remote_tlb_flush;
	257	};
	258
db3fe4eb TY	259	struct kvm_arch_memory_slot {
	260	};
	261
841b91c5 CH	262	struct s390_map_info {
	263	struct list_head list;
	264	__u64 guest_addr;
	265	__u64 addr;
	266	struct page *page;
	267	};
	268
	269	struct s390_io_adapter {
	270	unsigned int id;
	271	int isc;
	272	bool maskable;
	273	bool masked;
	274	bool swap;
	275	struct rw_semaphore maps_lock;
	276	struct list_head maps;
	277	atomic_t nr_maps;
	278	};
	279
	280	#define MAX_S390_IO_ADAPTERS ((MAX_ISC + 1) * 8)
	281	#define MAX_S390_ADAPTER_MAPS 256
	282
b0c632db	283	struct kvm_arch{
b0c632db HC	284	struct sca_block *sca;
b0c632db HC	285	debug_info_t *dbf;
180c12fb	286	struct kvm_s390_float_interrupt float_int;
c05c4186	287	struct kvm_device *flic;
598841ca	288	struct gmap *gmap;
fa6b7fe9	289	int css_support;
84223598	290	int use_irqchip;
841b91c5	291	struct s390_io_adapter *adapters[MAX_S390_IO_ADAPTERS];
b0c632db HC	292	};
b0c632db HC	293
bf640876 DD	294	#define KVM_HVA_ERR_BAD (-1UL)
	295	#define KVM_HVA_ERR_RO_BAD (-2UL)
	296
	297	static inline bool kvm_is_error_hva(unsigned long addr)
	298	{
	299	return IS_ERR_VALUE(addr);
	300	}
	301
3c038e6b DD	302	#define ASYNC_PF_PER_VCPU 64
	303	struct kvm_vcpu;
	304	struct kvm_async_pf;
	305	struct kvm_arch_async_pf {
	306	unsigned long pfault_token;
	307	};
	308
	309	bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
	310
	311	void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
	312	struct kvm_async_pf *work);
	313
	314	void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
	315	struct kvm_async_pf *work);
	316
	317	void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
	318	struct kvm_async_pf *work);
	319
5a32c1af	320	extern int sie64a(struct kvm_s390_sie_block , u64 );
b764bb1c	321	extern char sie_exit;
b0c632db	322	#endif