forked from luck/tmp_suning_uos_patched
9a2bb7f486
Instead of passing a 'struct kvm_run' back and forth between the kernel and userspace, allocate a page and allow the user to mmap() it. This reduces needless copying and makes the interface expandable by providing lots of free space. Signed-off-by: Avi Kivity <avi@qumranet.com>
643 lines
16 KiB
C
643 lines
16 KiB
C
#ifndef __KVM_H
|
|
#define __KVM_H
|
|
|
|
/*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/mm.h>
|
|
|
|
#include "vmx.h"
|
|
#include <linux/kvm.h>
|
|
#include <linux/kvm_para.h>
|
|
|
|
#define CR0_PE_MASK (1ULL << 0)
|
|
#define CR0_TS_MASK (1ULL << 3)
|
|
#define CR0_NE_MASK (1ULL << 5)
|
|
#define CR0_WP_MASK (1ULL << 16)
|
|
#define CR0_NW_MASK (1ULL << 29)
|
|
#define CR0_CD_MASK (1ULL << 30)
|
|
#define CR0_PG_MASK (1ULL << 31)
|
|
|
|
#define CR3_WPT_MASK (1ULL << 3)
|
|
#define CR3_PCD_MASK (1ULL << 4)
|
|
|
|
#define CR3_RESEVED_BITS 0x07ULL
|
|
#define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL)
|
|
#define CR3_FLAGS_MASK ((1ULL << 5) - 1)
|
|
|
|
#define CR4_VME_MASK (1ULL << 0)
|
|
#define CR4_PSE_MASK (1ULL << 4)
|
|
#define CR4_PAE_MASK (1ULL << 5)
|
|
#define CR4_PGE_MASK (1ULL << 7)
|
|
#define CR4_VMXE_MASK (1ULL << 13)
|
|
|
|
#define KVM_GUEST_CR0_MASK \
|
|
(CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK \
|
|
| CR0_NW_MASK | CR0_CD_MASK)
|
|
#define KVM_VM_CR0_ALWAYS_ON \
|
|
(CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK)
|
|
#define KVM_GUEST_CR4_MASK \
|
|
(CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK)
|
|
#define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK)
|
|
#define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK)
|
|
|
|
#define INVALID_PAGE (~(hpa_t)0)
|
|
#define UNMAPPED_GVA (~(gpa_t)0)
|
|
|
|
#define KVM_MAX_VCPUS 1
|
|
#define KVM_MEMORY_SLOTS 4
|
|
#define KVM_NUM_MMU_PAGES 256
|
|
#define KVM_MIN_FREE_MMU_PAGES 5
|
|
#define KVM_REFILL_PAGES 25
|
|
|
|
#define FX_IMAGE_SIZE 512
|
|
#define FX_IMAGE_ALIGN 16
|
|
#define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN)
|
|
|
|
#define DE_VECTOR 0
|
|
#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
|
|
|
|
/*
|
|
* Address types:
|
|
*
|
|
* gva - guest virtual address
|
|
* gpa - guest physical address
|
|
* gfn - guest frame number
|
|
* hva - host virtual address
|
|
* hpa - host physical address
|
|
* hfn - host frame number
|
|
*/
|
|
|
|
typedef unsigned long gva_t;
|
|
typedef u64 gpa_t;
|
|
typedef unsigned long gfn_t;
|
|
|
|
typedef unsigned long hva_t;
|
|
typedef u64 hpa_t;
|
|
typedef unsigned long hfn_t;
|
|
|
|
#define NR_PTE_CHAIN_ENTRIES 5
|
|
|
|
struct kvm_pte_chain {
|
|
u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
|
|
struct hlist_node link;
|
|
};
|
|
|
|
/*
|
|
* kvm_mmu_page_role, below, is defined as:
|
|
*
|
|
* bits 0:3 - total guest paging levels (2-4, or zero for real mode)
|
|
* bits 4:7 - page table level for this shadow (1-4)
|
|
* bits 8:9 - page table quadrant for 2-level guests
|
|
* bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
|
|
*/
|
|
union kvm_mmu_page_role {
|
|
unsigned word;
|
|
struct {
|
|
unsigned glevels : 4;
|
|
unsigned level : 4;
|
|
unsigned quadrant : 2;
|
|
unsigned pad_for_nice_hex_output : 6;
|
|
unsigned metaphysical : 1;
|
|
};
|
|
};
|
|
|
|
struct kvm_mmu_page {
|
|
struct list_head link;
|
|
struct hlist_node hash_link;
|
|
|
|
/*
|
|
* The following two entries are used to key the shadow page in the
|
|
* hash table.
|
|
*/
|
|
gfn_t gfn;
|
|
union kvm_mmu_page_role role;
|
|
|
|
hpa_t page_hpa;
|
|
unsigned long slot_bitmap; /* One bit set per slot which has memory
|
|
* in this shadow page.
|
|
*/
|
|
int global; /* Set if all ptes in this page are global */
|
|
int multimapped; /* More than one parent_pte? */
|
|
int root_count; /* Currently serving as active root */
|
|
union {
|
|
u64 *parent_pte; /* !multimapped */
|
|
struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
|
|
};
|
|
};
|
|
|
|
struct vmcs {
|
|
u32 revision_id;
|
|
u32 abort;
|
|
char data[0];
|
|
};
|
|
|
|
#define vmx_msr_entry kvm_msr_entry
|
|
|
|
struct kvm_vcpu;
|
|
|
|
/*
|
|
* x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
|
|
* 32-bit). The kvm_mmu structure abstracts the details of the current mmu
|
|
* mode.
|
|
*/
|
|
struct kvm_mmu {
|
|
void (*new_cr3)(struct kvm_vcpu *vcpu);
|
|
int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
|
|
void (*free)(struct kvm_vcpu *vcpu);
|
|
gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
|
|
hpa_t root_hpa;
|
|
int root_level;
|
|
int shadow_root_level;
|
|
|
|
u64 *pae_root;
|
|
};
|
|
|
|
#define KVM_NR_MEM_OBJS 20
|
|
|
|
struct kvm_mmu_memory_cache {
|
|
int nobjs;
|
|
void *objects[KVM_NR_MEM_OBJS];
|
|
};
|
|
|
|
/*
|
|
* We don't want allocation failures within the mmu code, so we preallocate
|
|
* enough memory for a single page fault in a cache.
|
|
*/
|
|
struct kvm_guest_debug {
|
|
int enabled;
|
|
unsigned long bp[4];
|
|
int singlestep;
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
struct kvm_vcpu {
|
|
struct kvm *kvm;
|
|
union {
|
|
struct vmcs *vmcs;
|
|
struct vcpu_svm *svm;
|
|
};
|
|
struct mutex mutex;
|
|
int cpu;
|
|
int launched;
|
|
struct kvm_run *run;
|
|
int interrupt_window_open;
|
|
unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
|
|
#define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long)
|
|
unsigned long irq_pending[NR_IRQ_WORDS];
|
|
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;
|
|
gpa_t para_state_gpa;
|
|
struct page *para_state_page;
|
|
gpa_t hypercall_gpa;
|
|
unsigned long cr4;
|
|
unsigned long cr8;
|
|
u64 pdptrs[4]; /* pae */
|
|
u64 shadow_efer;
|
|
u64 apic_base;
|
|
u64 ia32_misc_enable_msr;
|
|
int nmsrs;
|
|
struct vmx_msr_entry *guest_msrs;
|
|
struct vmx_msr_entry *host_msrs;
|
|
|
|
struct list_head free_pages;
|
|
struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES];
|
|
struct kvm_mmu mmu;
|
|
|
|
struct kvm_mmu_memory_cache mmu_pte_chain_cache;
|
|
struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
|
|
|
|
gfn_t last_pt_write_gfn;
|
|
int last_pt_write_count;
|
|
|
|
struct kvm_guest_debug guest_debug;
|
|
|
|
char fx_buf[FX_BUF_SIZE];
|
|
char *host_fx_image;
|
|
char *guest_fx_image;
|
|
|
|
int mmio_needed;
|
|
int mmio_read_completed;
|
|
int mmio_is_write;
|
|
int mmio_size;
|
|
unsigned char mmio_data[8];
|
|
gpa_t mmio_phys_addr;
|
|
|
|
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;
|
|
};
|
|
|
|
struct kvm_memory_slot {
|
|
gfn_t base_gfn;
|
|
unsigned long npages;
|
|
unsigned long flags;
|
|
struct page **phys_mem;
|
|
unsigned long *dirty_bitmap;
|
|
};
|
|
|
|
struct kvm {
|
|
spinlock_t lock; /* protects everything except vcpus */
|
|
int nmemslots;
|
|
struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
|
|
/*
|
|
* Hash table of struct kvm_mmu_page.
|
|
*/
|
|
struct list_head active_mmu_pages;
|
|
int n_free_mmu_pages;
|
|
struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
|
|
struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
|
|
int memory_config_version;
|
|
int busy;
|
|
unsigned long rmap_overflow;
|
|
struct list_head vm_list;
|
|
struct file *filp;
|
|
};
|
|
|
|
struct kvm_stat {
|
|
u32 pf_fixed;
|
|
u32 pf_guest;
|
|
u32 tlb_flush;
|
|
u32 invlpg;
|
|
|
|
u32 exits;
|
|
u32 io_exits;
|
|
u32 mmio_exits;
|
|
u32 signal_exits;
|
|
u32 irq_window_exits;
|
|
u32 halt_exits;
|
|
u32 request_irq_exits;
|
|
u32 irq_exits;
|
|
};
|
|
|
|
struct descriptor_table {
|
|
u16 limit;
|
|
unsigned long base;
|
|
} __attribute__((packed));
|
|
|
|
struct kvm_arch_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);
|
|
int (*hardware_setup)(void); /* __init */
|
|
void (*hardware_unsetup)(void); /* __exit */
|
|
|
|
int (*vcpu_create)(struct kvm_vcpu *vcpu);
|
|
void (*vcpu_free)(struct kvm_vcpu *vcpu);
|
|
|
|
void (*vcpu_load)(struct kvm_vcpu *vcpu);
|
|
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);
|
|
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_cr0_cr4_guest_bits)(struct kvm_vcpu *vcpu);
|
|
void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
|
|
void (*set_cr0_no_modeswitch)(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 (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr);
|
|
void (*tlb_flush)(struct kvm_vcpu *vcpu);
|
|
void (*inject_page_fault)(struct kvm_vcpu *vcpu,
|
|
unsigned long addr, u32 err_code);
|
|
|
|
void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
|
|
|
|
int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
|
|
int (*vcpu_setup)(struct kvm_vcpu *vcpu);
|
|
void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
|
|
void (*patch_hypercall)(struct kvm_vcpu *vcpu,
|
|
unsigned char *hypercall_addr);
|
|
};
|
|
|
|
extern struct kvm_stat kvm_stat;
|
|
extern struct kvm_arch_ops *kvm_arch_ops;
|
|
|
|
#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
|
|
#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
|
|
|
|
int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module);
|
|
void kvm_exit_arch(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);
|
|
|
|
int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
|
|
void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot);
|
|
|
|
hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
|
|
#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
|
|
#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
|
|
static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
|
|
hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
|
|
|
|
void kvm_emulator_want_group7_invlpg(void);
|
|
|
|
extern hpa_t bad_page_address;
|
|
|
|
static inline struct page *gfn_to_page(struct kvm_memory_slot *slot, gfn_t gfn)
|
|
{
|
|
return slot->phys_mem[gfn - slot->base_gfn];
|
|
}
|
|
|
|
struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
|
|
void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
|
|
|
|
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);
|
|
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);
|
|
|
|
struct x86_emulate_ctxt;
|
|
|
|
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);
|
|
void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
|
|
|
|
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 fx_init(struct kvm_vcpu *vcpu);
|
|
|
|
void load_msrs(struct vmx_msr_entry *e, int n);
|
|
void save_msrs(struct vmx_msr_entry *e, int n);
|
|
void kvm_resched(struct kvm_vcpu *vcpu);
|
|
|
|
int kvm_read_guest(struct kvm_vcpu *vcpu,
|
|
gva_t addr,
|
|
unsigned long size,
|
|
void *dest);
|
|
|
|
int kvm_write_guest(struct kvm_vcpu *vcpu,
|
|
gva_t addr,
|
|
unsigned long size,
|
|
void *data);
|
|
|
|
unsigned long segment_base(u16 selector);
|
|
|
|
void kvm_mmu_pre_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes);
|
|
void kvm_mmu_post_write(struct kvm_vcpu *vcpu, gpa_t gpa, 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_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
|
|
|
|
static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
|
|
u32 error_code)
|
|
{
|
|
if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
|
|
kvm_mmu_free_some_pages(vcpu);
|
|
return vcpu->mmu.page_fault(vcpu, gva, error_code);
|
|
}
|
|
|
|
static inline struct page *_gfn_to_page(struct kvm *kvm, gfn_t gfn)
|
|
{
|
|
struct kvm_memory_slot *slot = gfn_to_memslot(kvm, gfn);
|
|
return (slot) ? slot->phys_mem[gfn - slot->base_gfn] : NULL;
|
|
}
|
|
|
|
static inline int is_long_mode(struct kvm_vcpu *vcpu)
|
|
{
|
|
#ifdef CONFIG_X86_64
|
|
return vcpu->shadow_efer & EFER_LME;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
static inline int is_pae(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->cr4 & CR4_PAE_MASK;
|
|
}
|
|
|
|
static inline int is_pse(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->cr4 & CR4_PSE_MASK;
|
|
}
|
|
|
|
static inline int is_paging(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->cr0 & CR0_PG_MASK;
|
|
}
|
|
|
|
static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
|
|
{
|
|
return slot - kvm->memslots;
|
|
}
|
|
|
|
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(void *image)
|
|
{
|
|
asm ("fxsave (%0)":: "r" (image));
|
|
}
|
|
|
|
static inline void fx_restore(void *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 */
|
|
}
|
|
|
|
#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
|