[deliverable/linux.git] / drivers / kvm / x86.h

#/*
 * Kernel-based Virtual Machine driver for Linux
 *
 * This header defines architecture specific interfaces, x86 version
 *
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 *
 */

#ifndef KVM_X86_H
#define KVM_X86_H

#include "kvm.h"

#include <linux/types.h>
#include <linux/mm.h>

#include <linux/kvm.h>
#include <linux/kvm_para.h>

#include <asm/desc.h>

#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)

#define KVM_GUEST_CR0_MASK \
	(X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
	 | X86_CR0_NW | X86_CR0_CD)
#define KVM_VM_CR0_ALWAYS_ON \
	(X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
	 | X86_CR0_MP)
#define KVM_GUEST_CR4_MASK \
	(X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)

#define INVALID_PAGE (~(hpa_t)0)
#define UNMAPPED_GVA (~(gpa_t)0)

#define DE_VECTOR 0
#define UD_VECTOR 6
#define NM_VECTOR 7
#define DF_VECTOR 8
#define TS_VECTOR 10
#define NP_VECTOR 11
#define SS_VECTOR 12
#define GP_VECTOR 13
#define PF_VECTOR 14

#define SELECTOR_TI_MASK (1 << 2)
#define SELECTOR_RPL_MASK 0x03

#define IOPL_SHIFT 12

extern spinlock_t kvm_lock;
extern struct list_head vm_list;

enum {
	VCPU_REGS_RAX = 0,
	VCPU_REGS_RCX = 1,
	VCPU_REGS_RDX = 2,
	VCPU_REGS_RBX = 3,
	VCPU_REGS_RSP = 4,
	VCPU_REGS_RBP = 5,
	VCPU_REGS_RSI = 6,
	VCPU_REGS_RDI = 7,
#ifdef CONFIG_X86_64
	VCPU_REGS_R8 = 8,
	VCPU_REGS_R9 = 9,
	VCPU_REGS_R10 = 10,
	VCPU_REGS_R11 = 11,
	VCPU_REGS_R12 = 12,
	VCPU_REGS_R13 = 13,
	VCPU_REGS_R14 = 14,
	VCPU_REGS_R15 = 15,
#endif
	NR_VCPU_REGS
};

enum {
	VCPU_SREG_CS,
	VCPU_SREG_DS,
	VCPU_SREG_ES,
	VCPU_SREG_FS,
	VCPU_SREG_GS,
	VCPU_SREG_SS,
	VCPU_SREG_TR,
	VCPU_SREG_LDTR,
};

#include "x86_emulate.h"

struct kvm_vcpu_arch {
	u64 host_tsc;
	int interrupt_window_open;
	unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
	DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
	unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
	unsigned long rip;      /* needs vcpu_load_rsp_rip() */

	unsigned long cr0;
	unsigned long cr2;
	unsigned long cr3;
	unsigned long cr4;
	unsigned long cr8;
	u64 pdptrs[4]; /* pae */
	u64 shadow_efer;
	u64 apic_base;
	struct kvm_lapic *apic;    /* kernel irqchip context */
#define VCPU_MP_STATE_RUNNABLE          0
#define VCPU_MP_STATE_UNINITIALIZED     1
#define VCPU_MP_STATE_INIT_RECEIVED     2
#define VCPU_MP_STATE_SIPI_RECEIVED     3
#define VCPU_MP_STATE_HALTED            4
	int mp_state;
	int sipi_vector;
	u64 ia32_misc_enable_msr;

	struct kvm_mmu mmu;

	struct kvm_mmu_memory_cache mmu_pte_chain_cache;
	struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
	struct kvm_mmu_memory_cache mmu_page_cache;
	struct kvm_mmu_memory_cache mmu_page_header_cache;

	gfn_t last_pt_write_gfn;
	int   last_pt_write_count;
	u64  *last_pte_updated;

	struct i387_fxsave_struct host_fx_image;
	struct i387_fxsave_struct guest_fx_image;

	gva_t mmio_fault_cr2;
	struct kvm_pio_request pio;
	void *pio_data;

	struct kvm_queued_exception {
		bool pending;
		bool has_error_code;
		u8 nr;
		u32 error_code;
	} exception;

	struct {
		int active;
		u8 save_iopl;
		struct kvm_save_segment {
			u16 selector;
			unsigned long base;
			u32 limit;
			u32 ar;
		} tr, es, ds, fs, gs;
	} rmode;
	int halt_request; /* real mode on Intel only */

	int cpuid_nent;
	struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
	/* emulate context */

	struct x86_emulate_ctxt emulate_ctxt;
};

struct kvm_vcpu {
	KVM_VCPU_COMM;

	struct kvm_vcpu_arch arch;
};

struct descriptor_table {
	u16 limit;
	unsigned long base;
} __attribute__((packed));

struct kvm_x86_ops {
	int (*cpu_has_kvm_support)(void);          /* __init */
	int (*disabled_by_bios)(void);             /* __init */
	void (*hardware_enable)(void *dummy);      /* __init */
	void (*hardware_disable)(void *dummy);
	void (*check_processor_compatibility)(void *rtn);
	int (*hardware_setup)(void);               /* __init */
	void (*hardware_unsetup)(void);            /* __exit */

	/* Create, but do not attach this VCPU */
	struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
	void (*vcpu_free)(struct kvm_vcpu *vcpu);
	int (*vcpu_reset)(struct kvm_vcpu *vcpu);

	void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
	void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
	void (*vcpu_put)(struct kvm_vcpu *vcpu);
	void (*vcpu_decache)(struct kvm_vcpu *vcpu);

	int (*set_guest_debug)(struct kvm_vcpu *vcpu,
			       struct kvm_debug_guest *dbg);
	void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
	int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
	int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
	u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
	void (*get_segment)(struct kvm_vcpu *vcpu,
			    struct kvm_segment *var, int seg);
	void (*set_segment)(struct kvm_vcpu *vcpu,
			    struct kvm_segment *var, int seg);
	void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
	void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
	void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
	void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
	void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
	void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
	void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
	void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
	void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
	void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
	unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
	void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
		       int *exception);
	void (*cache_regs)(struct kvm_vcpu *vcpu);
	void (*decache_regs)(struct kvm_vcpu *vcpu);
	unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
	void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);

	void (*tlb_flush)(struct kvm_vcpu *vcpu);

	void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
	int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
	void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
	void (*patch_hypercall)(struct kvm_vcpu *vcpu,
				unsigned char *hypercall_addr);
	int (*get_irq)(struct kvm_vcpu *vcpu);
	void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
	void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
				bool has_error_code, u32 error_code);
	bool (*exception_injected)(struct kvm_vcpu *vcpu);
	void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
	void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
				       struct kvm_run *run);

	int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
};

extern struct kvm_x86_ops *kvm_x86_ops;

int kvm_mmu_module_init(void);
void kvm_mmu_module_exit(void);

void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
int kvm_mmu_create(struct kvm_vcpu *vcpu);
int kvm_mmu_setup(struct kvm_vcpu *vcpu);
void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);

int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
void kvm_mmu_zap_all(struct kvm *kvm);
unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);

enum emulation_result {
	EMULATE_DONE,       /* no further processing */
	EMULATE_DO_MMIO,      /* kvm_run filled with mmio request */
	EMULATE_FAIL,         /* can't emulate this instruction */
};

int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
			unsigned long cr2, u16 error_code, int no_decode);
void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
		   unsigned long *rflags);

unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
		     unsigned long *rflags);
int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);

struct x86_emulate_ctxt;

int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
		     int size, unsigned port);
int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
			   int size, unsigned long count, int down,
			    gva_t address, int rep, unsigned port);
void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
int kvm_emulate_halt(struct kvm_vcpu *vcpu);
int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
int emulate_clts(struct kvm_vcpu *vcpu);
int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
		    unsigned long *dest);
int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
		    unsigned long value);

void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
unsigned long get_cr8(struct kvm_vcpu *vcpu);
void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);

int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);

void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
			   u32 error_code);

void fx_init(struct kvm_vcpu *vcpu);

int emulator_read_std(unsigned long addr,
		      void *val,
		      unsigned int bytes,
		      struct kvm_vcpu *vcpu);
int emulator_write_emulated(unsigned long addr,
			    const void *val,
			    unsigned int bytes,
			    struct kvm_vcpu *vcpu);

unsigned long segment_base(u16 selector);

void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
		       const u8 *new, int bytes);
int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
int kvm_mmu_load(struct kvm_vcpu *vcpu);
void kvm_mmu_unload(struct kvm_vcpu *vcpu);

int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);

int kvm_fix_hypercall(struct kvm_vcpu *vcpu);

int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);

int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
int complete_pio(struct kvm_vcpu *vcpu);

static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
{
	struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);

	return (struct kvm_mmu_page *)page_private(page);
}

static inline u16 read_fs(void)
{
	u16 seg;
	asm("mov %%fs, %0" : "=g"(seg));
	return seg;
}

static inline u16 read_gs(void)
{
	u16 seg;
	asm("mov %%gs, %0" : "=g"(seg));
	return seg;
}

static inline u16 read_ldt(void)
{
	u16 ldt;
	asm("sldt %0" : "=g"(ldt));
	return ldt;
}

static inline void load_fs(u16 sel)
{
	asm("mov %0, %%fs" : : "rm"(sel));
}

static inline void load_gs(u16 sel)
{
	asm("mov %0, %%gs" : : "rm"(sel));
}

#ifndef load_ldt
static inline void load_ldt(u16 sel)
{
	asm("lldt %0" : : "rm"(sel));
}
#endif

static inline void get_idt(struct descriptor_table *table)
{
	asm("sidt %0" : "=m"(*table));
}

static inline void get_gdt(struct descriptor_table *table)
{
	asm("sgdt %0" : "=m"(*table));
}

static inline unsigned long read_tr_base(void)
{
	u16 tr;
	asm("str %0" : "=g"(tr));
	return segment_base(tr);
}

#ifdef CONFIG_X86_64
static inline unsigned long read_msr(unsigned long msr)
{
	u64 value;

	rdmsrl(msr, value);
	return value;
}
#endif

static inline void fx_save(struct i387_fxsave_struct *image)
{
	asm("fxsave (%0)":: "r" (image));
}

static inline void fx_restore(struct i387_fxsave_struct *image)
{
	asm("fxrstor (%0)":: "r" (image));
}

static inline void fpu_init(void)
{
	asm("finit");
}

static inline u32 get_rdx_init_val(void)
{
	return 0x600; /* P6 family */
}

static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
{
	kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
}

#define ASM_VMX_VMCLEAR_RAX       ".byte 0x66, 0x0f, 0xc7, 0x30"
#define ASM_VMX_VMLAUNCH          ".byte 0x0f, 0x01, 0xc2"
#define ASM_VMX_VMRESUME          ".byte 0x0f, 0x01, 0xc3"
#define ASM_VMX_VMPTRLD_RAX       ".byte 0x0f, 0xc7, 0x30"
#define ASM_VMX_VMREAD_RDX_RAX    ".byte 0x0f, 0x78, 0xd0"
#define ASM_VMX_VMWRITE_RAX_RDX   ".byte 0x0f, 0x79, 0xd0"
#define ASM_VMX_VMWRITE_RSP_RDX   ".byte 0x0f, 0x79, 0xd4"
#define ASM_VMX_VMXOFF            ".byte 0x0f, 0x01, 0xc4"
#define ASM_VMX_VMXON_RAX         ".byte 0xf3, 0x0f, 0xc7, 0x30"

#define MSR_IA32_TIME_STAMP_COUNTER		0x010

#define TSS_IOPB_BASE_OFFSET 0x66
#define TSS_BASE_SIZE 0x68
#define TSS_IOPB_SIZE (65536 / 8)
#define TSS_REDIRECTION_SIZE (256 / 8)
#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)

#endif
Commit	Line	Data
043405e1 CO	1	#/*
	2	* Kernel-based Virtual Machine driver for Linux
	3	*
	4	* This header defines architecture specific interfaces, x86 version
	5	*
	6	* This work is licensed under the terms of the GNU GPL, version 2. See
	7	* the COPYING file in the top-level directory.
	8	*
	9	*/
	10
	11	#ifndef KVM_X86_H
	12	#define KVM_X86_H
	13
	14	#include "kvm.h"
	15
34c16eec ZX	16	#include <linux/types.h>
	17	#include <linux/mm.h>
	18
	19	#include <linux/kvm.h>
	20	#include <linux/kvm_para.h>
	21
e01a1b57 HB	22	#include <asm/desc.h>
e01a1b57 HB	23
cd6e8f87 ZX	24	#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT \| X86_CR3_PCD) - 1)
	25	#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT \| X86_CR3_PCD))
	26	#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS\|0xFFFFFF0000000000ULL)
	27
	28	#define KVM_GUEST_CR0_MASK \
	29	(X86_CR0_PG \| X86_CR0_PE \| X86_CR0_WP \| X86_CR0_NE \
	30	\| X86_CR0_NW \| X86_CR0_CD)
	31	#define KVM_VM_CR0_ALWAYS_ON \
	32	(X86_CR0_PG \| X86_CR0_PE \| X86_CR0_WP \| X86_CR0_NE \| X86_CR0_TS \
	33	\| X86_CR0_MP)
	34	#define KVM_GUEST_CR4_MASK \
	35	(X86_CR4_VME \| X86_CR4_PSE \| X86_CR4_PAE \| X86_CR4_PGE \| X86_CR4_VMXE)
	36	#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE \| X86_CR4_VMXE)
	37	#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME \| X86_CR4_PAE \| X86_CR4_VMXE)
	38
	39	#define INVALID_PAGE (~(hpa_t)0)
	40	#define UNMAPPED_GVA (~(gpa_t)0)
	41
	42	#define DE_VECTOR 0
	43	#define UD_VECTOR 6
	44	#define NM_VECTOR 7
	45	#define DF_VECTOR 8
	46	#define TS_VECTOR 10
	47	#define NP_VECTOR 11
	48	#define SS_VECTOR 12
	49	#define GP_VECTOR 13
	50	#define PF_VECTOR 14
	51
	52	#define SELECTOR_TI_MASK (1 << 2)
	53	#define SELECTOR_RPL_MASK 0x03
	54
	55	#define IOPL_SHIFT 12
	56
e9b11c17 ZX	57	extern spinlock_t kvm_lock;
	58	extern struct list_head vm_list;
	59
2b3ccfa0 ZX	60	enum {
	61	VCPU_REGS_RAX = 0,
	62	VCPU_REGS_RCX = 1,
	63	VCPU_REGS_RDX = 2,
	64	VCPU_REGS_RBX = 3,
	65	VCPU_REGS_RSP = 4,
	66	VCPU_REGS_RBP = 5,
	67	VCPU_REGS_RSI = 6,
	68	VCPU_REGS_RDI = 7,
	69	#ifdef CONFIG_X86_64
	70	VCPU_REGS_R8 = 8,
	71	VCPU_REGS_R9 = 9,
	72	VCPU_REGS_R10 = 10,
	73	VCPU_REGS_R11 = 11,
	74	VCPU_REGS_R12 = 12,
	75	VCPU_REGS_R13 = 13,
	76	VCPU_REGS_R14 = 14,
	77	VCPU_REGS_R15 = 15,
	78	#endif
	79	NR_VCPU_REGS
	80	};
	81
	82	enum {
	83	VCPU_SREG_CS,
	84	VCPU_SREG_DS,
	85	VCPU_SREG_ES,
	86	VCPU_SREG_FS,
	87	VCPU_SREG_GS,
	88	VCPU_SREG_SS,
	89	VCPU_SREG_TR,
	90	VCPU_SREG_LDTR,
	91	};
	92
	93	#include "x86_emulate.h"
	94
ad312c7c	95	struct kvm_vcpu_arch {
34c16eec ZX	96	u64 host_tsc;
	97	int interrupt_window_open;
	98	unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
	99	DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
	100	unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
	101	unsigned long rip; /* needs vcpu_load_rsp_rip() */
	102
	103	unsigned long cr0;
	104	unsigned long cr2;
	105	unsigned long cr3;
	106	unsigned long cr4;
	107	unsigned long cr8;
	108	u64 pdptrs[4]; /* pae */
	109	u64 shadow_efer;
	110	u64 apic_base;
	111	struct kvm_lapic apic; / kernel irqchip context */
	112	#define VCPU_MP_STATE_RUNNABLE 0
	113	#define VCPU_MP_STATE_UNINITIALIZED 1
	114	#define VCPU_MP_STATE_INIT_RECEIVED 2
	115	#define VCPU_MP_STATE_SIPI_RECEIVED 3
	116	#define VCPU_MP_STATE_HALTED 4
	117	int mp_state;
	118	int sipi_vector;
	119	u64 ia32_misc_enable_msr;
	120
	121	struct kvm_mmu mmu;
	122
	123	struct kvm_mmu_memory_cache mmu_pte_chain_cache;
	124	struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
	125	struct kvm_mmu_memory_cache mmu_page_cache;
	126	struct kvm_mmu_memory_cache mmu_page_header_cache;
	127
	128	gfn_t last_pt_write_gfn;
	129	int last_pt_write_count;
	130	u64 *last_pte_updated;
	131
34c16eec ZX	132	struct i387_fxsave_struct host_fx_image;
	133	struct i387_fxsave_struct guest_fx_image;
	134
	135	gva_t mmio_fault_cr2;
	136	struct kvm_pio_request pio;
	137	void *pio_data;
	138
298101da AK	139	struct kvm_queued_exception {
	140	bool pending;
	141	bool has_error_code;
	142	u8 nr;
	143	u32 error_code;
	144	} exception;
	145
34c16eec ZX	146	struct {
	147	int active;
	148	u8 save_iopl;
	149	struct kvm_save_segment {
	150	u16 selector;
	151	unsigned long base;
	152	u32 limit;
	153	u32 ar;
	154	} tr, es, ds, fs, gs;
	155	} rmode;
	156	int halt_request; /* real mode on Intel only */
	157
	158	int cpuid_nent;
07716717	159	struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
34c16eec ZX	160	/* emulate context */
	161
	162	struct x86_emulate_ctxt emulate_ctxt;
	163	};
	164
ad312c7c ZX	165	struct kvm_vcpu {
	166	KVM_VCPU_COMM;
	167
	168	struct kvm_vcpu_arch arch;
	169	};
	170
e01a1b57 HB	171	struct descriptor_table {
	172	u16 limit;
	173	unsigned long base;
	174	} __attribute__((packed));
	175
ea4a5ff8 ZX	176	struct kvm_x86_ops {
	177	int (cpu_has_kvm_support)(void); / __init */
	178	int (disabled_by_bios)(void); / __init */
	179	void (hardware_enable)(void dummy); /* __init */
	180	void (hardware_disable)(void dummy);
	181	void (check_processor_compatibility)(void rtn);
	182	int (hardware_setup)(void); / __init */
	183	void (hardware_unsetup)(void); / __exit */
	184
	185	/* Create, but do not attach this VCPU */
	186	struct kvm_vcpu (vcpu_create)(struct kvm *kvm, unsigned id);
	187	void (vcpu_free)(struct kvm_vcpu vcpu);
	188	int (vcpu_reset)(struct kvm_vcpu vcpu);
	189
	190	void (prepare_guest_switch)(struct kvm_vcpu vcpu);
	191	void (vcpu_load)(struct kvm_vcpu vcpu, int cpu);
	192	void (vcpu_put)(struct kvm_vcpu vcpu);
	193	void (vcpu_decache)(struct kvm_vcpu vcpu);
	194
	195	int (set_guest_debug)(struct kvm_vcpu vcpu,
	196	struct kvm_debug_guest *dbg);
	197	void (guest_debug_pre)(struct kvm_vcpu vcpu);
	198	int (get_msr)(struct kvm_vcpu vcpu, u32 msr_index, u64 *pdata);
	199	int (set_msr)(struct kvm_vcpu vcpu, u32 msr_index, u64 data);
	200	u64 (get_segment_base)(struct kvm_vcpu vcpu, int seg);
	201	void (get_segment)(struct kvm_vcpu vcpu,
	202	struct kvm_segment *var, int seg);
	203	void (set_segment)(struct kvm_vcpu vcpu,
	204	struct kvm_segment *var, int seg);
	205	void (get_cs_db_l_bits)(struct kvm_vcpu vcpu, int db, int l);
	206	void (decache_cr4_guest_bits)(struct kvm_vcpu vcpu);
	207	void (set_cr0)(struct kvm_vcpu vcpu, unsigned long cr0);
	208	void (set_cr3)(struct kvm_vcpu vcpu, unsigned long cr3);
	209	void (set_cr4)(struct kvm_vcpu vcpu, unsigned long cr4);
	210	void (set_efer)(struct kvm_vcpu vcpu, u64 efer);
	211	void (get_idt)(struct kvm_vcpu vcpu, struct descriptor_table *dt);
	212	void (set_idt)(struct kvm_vcpu vcpu, struct descriptor_table *dt);
	213	void (get_gdt)(struct kvm_vcpu vcpu, struct descriptor_table *dt);
	214	void (set_gdt)(struct kvm_vcpu vcpu, struct descriptor_table *dt);
	215	unsigned long (get_dr)(struct kvm_vcpu vcpu, int dr);
	216	void (set_dr)(struct kvm_vcpu vcpu, int dr, unsigned long value,
	217	int *exception);
	218	void (cache_regs)(struct kvm_vcpu vcpu);
	219	void (decache_regs)(struct kvm_vcpu vcpu);
	220	unsigned long (get_rflags)(struct kvm_vcpu vcpu);
	221	void (set_rflags)(struct kvm_vcpu vcpu, unsigned long rflags);
	222
	223	void (tlb_flush)(struct kvm_vcpu vcpu);
ea4a5ff8	224
ea4a5ff8 ZX	225	void (run)(struct kvm_vcpu vcpu, struct kvm_run *run);
	226	int (handle_exit)(struct kvm_run run, struct kvm_vcpu *vcpu);
	227	void (skip_emulated_instruction)(struct kvm_vcpu vcpu);
	228	void (patch_hypercall)(struct kvm_vcpu vcpu,
	229	unsigned char *hypercall_addr);
	230	int (get_irq)(struct kvm_vcpu vcpu);
	231	void (set_irq)(struct kvm_vcpu vcpu, int vec);
298101da AK	232	void (queue_exception)(struct kvm_vcpu vcpu, unsigned nr,
	233	bool has_error_code, u32 error_code);
	234	bool (exception_injected)(struct kvm_vcpu vcpu);
ea4a5ff8 ZX	235	void (inject_pending_irq)(struct kvm_vcpu vcpu);
	236	void (inject_pending_vectors)(struct kvm_vcpu vcpu,
	237	struct kvm_run *run);
	238
	239	int (set_tss_addr)(struct kvm kvm, unsigned int addr);
	240	};
	241
97896d04 ZX	242	extern struct kvm_x86_ops *kvm_x86_ops;
97896d04 ZX	243
54f1585a ZX	244	int kvm_mmu_module_init(void);
	245	void kvm_mmu_module_exit(void);
	246
	247	void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
	248	int kvm_mmu_create(struct kvm_vcpu *vcpu);
	249	int kvm_mmu_setup(struct kvm_vcpu *vcpu);
	250	void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
	251
	252	int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
	253	void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
	254	void kvm_mmu_zap_all(struct kvm *kvm);
3ad82a7e	255	unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
54f1585a ZX	256	void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
	257
	258	enum emulation_result {
	259	EMULATE_DONE, /* no further processing */
	260	EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
	261	EMULATE_FAIL, /* can't emulate this instruction */
	262	};
	263
	264	int emulate_instruction(struct kvm_vcpu vcpu, struct kvm_run run,
	265	unsigned long cr2, u16 error_code, int no_decode);
	266	void kvm_report_emulation_failure(struct kvm_vcpu cvpu, const char context);
	267	void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
	268	void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
	269	void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
	270	unsigned long *rflags);
	271
	272	unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
	273	void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
	274	unsigned long *rflags);
	275	int kvm_get_msr(struct kvm_vcpu vcpu, u32 msr_index, u64 data);
	276	int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
	277
	278	struct x86_emulate_ctxt;
	279
	280	int kvm_emulate_pio(struct kvm_vcpu vcpu, struct kvm_run run, int in,
	281	int size, unsigned port);
	282	int kvm_emulate_pio_string(struct kvm_vcpu vcpu, struct kvm_run run, int in,
	283	int size, unsigned long count, int down,
	284	gva_t address, int rep, unsigned port);
	285	void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
	286	int kvm_emulate_halt(struct kvm_vcpu *vcpu);
	287	int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
	288	int emulate_clts(struct kvm_vcpu *vcpu);
	289	int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
	290	unsigned long *dest);
	291	int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
	292	unsigned long value);
	293
	294	void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
	295	void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
	296	void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
	297	void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
	298	unsigned long get_cr8(struct kvm_vcpu *vcpu);
	299	void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
	300	void kvm_get_cs_db_l_bits(struct kvm_vcpu vcpu, int db, int *l);
	301
	302	int kvm_get_msr_common(struct kvm_vcpu vcpu, u32 msr, u64 pdata);
	303	int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
	304
298101da AK	305	void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
298101da AK	306	void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
c3c91fee AK	307	void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
c3c91fee AK	308	u32 error_code);
298101da	309
54f1585a ZX	310	void fx_init(struct kvm_vcpu *vcpu);
	311
	312	int emulator_read_std(unsigned long addr,
	313	void *val,
	314	unsigned int bytes,
	315	struct kvm_vcpu *vcpu);
	316	int emulator_write_emulated(unsigned long addr,
	317	const void *val,
	318	unsigned int bytes,
	319	struct kvm_vcpu *vcpu);
	320
	321	unsigned long segment_base(u16 selector);
	322
d835dfec	323	void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
54f1585a ZX	324	void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
	325	const u8 *new, int bytes);
	326	int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
	327	void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
	328	int kvm_mmu_load(struct kvm_vcpu *vcpu);
	329	void kvm_mmu_unload(struct kvm_vcpu *vcpu);
	330
	331	int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
	332
	333	int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
	334
3067714c	335	int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
34c16eec	336
a03490ed	337	int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
de7d789a	338	int complete_pio(struct kvm_vcpu *vcpu);
ec6d273d ZX	339
	340	static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
	341	{
	342	struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
	343
	344	return (struct kvm_mmu_page *)page_private(page);
	345	}
	346
	347	static inline u16 read_fs(void)
	348	{
	349	u16 seg;
	350	asm("mov %%fs, %0" : "=g"(seg));
	351	return seg;
	352	}
	353
	354	static inline u16 read_gs(void)
	355	{
	356	u16 seg;
	357	asm("mov %%gs, %0" : "=g"(seg));
	358	return seg;
	359	}
	360
	361	static inline u16 read_ldt(void)
	362	{
	363	u16 ldt;
	364	asm("sldt %0" : "=g"(ldt));
	365	return ldt;
	366	}
	367
	368	static inline void load_fs(u16 sel)
	369	{
	370	asm("mov %0, %%fs" : : "rm"(sel));
	371	}
	372
	373	static inline void load_gs(u16 sel)
	374	{
	375	asm("mov %0, %%gs" : : "rm"(sel));
	376	}
	377
	378	#ifndef load_ldt
	379	static inline void load_ldt(u16 sel)
	380	{
	381	asm("lldt %0" : : "rm"(sel));
	382	}
	383	#endif
	384
	385	static inline void get_idt(struct descriptor_table *table)
	386	{
	387	asm("sidt %0" : "=m"(*table));
	388	}
	389
	390	static inline void get_gdt(struct descriptor_table *table)
	391	{
	392	asm("sgdt %0" : "=m"(*table));
	393	}
	394
	395	static inline unsigned long read_tr_base(void)
	396	{
	397	u16 tr;
	398	asm("str %0" : "=g"(tr));
	399	return segment_base(tr);
	400	}
	401
	402	#ifdef CONFIG_X86_64
403	static inline unsigned long read_msr(unsigned long msr)
404	{
405	u64 value;
406
407	rdmsrl(msr, value);
408	return value;
409	}
410	#endif
411
412	static inline void fx_save(struct i387_fxsave_struct *image)
413	{
414	asm("fxsave (%0)":: "r" (image));
415	}
416
417	static inline void fx_restore(struct i387_fxsave_struct *image)
418	{
419	asm("fxrstor (%0)":: "r" (image));
420	}
421
422	static inline void fpu_init(void)
423	{
424	asm("finit");
425	}
426
427	static inline u32 get_rdx_init_val(void)
428	{
429	return 0x600; /* P6 family */
430	}
431
c1a5d4f9 AK	432	static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
	433	{
	434	kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
	435	}
	436
ec6d273d ZX	437	#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
	438	#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
	439	#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
	440	#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
	441	#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
	442	#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
	443	#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
	444	#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
	445	#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
	446
	447	#define MSR_IA32_TIME_STAMP_COUNTER 0x010
	448
	449	#define TSS_IOPB_BASE_OFFSET 0x66
	450	#define TSS_BASE_SIZE 0x68
	451	#define TSS_IOPB_SIZE (65536 / 8)
	452	#define TSS_REDIRECTION_SIZE (256 / 8)
	453	#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
53e0aa7b	454
043405e1	455	#endif