File:  [Qemu by Fabrice Bellard] / qemu / kvm.h
Revision 1.1.1.9 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 18:55:49 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu1001, qemu1000, qemu0151, HEAD
qemu 0.15.1

    1: /*
    2:  * QEMU KVM support
    3:  *
    4:  * Copyright IBM, Corp. 2008
    5:  *
    6:  * Authors:
    7:  *  Anthony Liguori   <aliguori@us.ibm.com>
    8:  *
    9:  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   10:  * See the COPYING file in the top-level directory.
   11:  *
   12:  */
   13: 
   14: #ifndef QEMU_KVM_H
   15: #define QEMU_KVM_H
   16: 
   17: #include <errno.h>
   18: #include "config-host.h"
   19: #include "qemu-queue.h"
   20: 
   21: #ifdef CONFIG_KVM
   22: #include <linux/kvm.h>
   23: #endif
   24: 
   25: extern int kvm_allowed;
   26: 
   27: #if defined CONFIG_KVM || !defined NEED_CPU_H
   28: #define kvm_enabled() (kvm_allowed)
   29: #else
   30: #define kvm_enabled() (0)
   31: #endif
   32: 
   33: struct kvm_run;
   34: 
   35: typedef struct KVMCapabilityInfo {
   36:     const char *name;
   37:     int value;
   38: } KVMCapabilityInfo;
   39: 
   40: #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
   41: #define KVM_CAP_LAST_INFO { NULL, 0 }
   42: 
   43: /* external API */
   44: 
   45: int kvm_init(void);
   46: 
   47: int kvm_has_sync_mmu(void);
   48: int kvm_has_vcpu_events(void);
   49: int kvm_has_robust_singlestep(void);
   50: int kvm_has_debugregs(void);
   51: int kvm_has_xsave(void);
   52: int kvm_has_xcrs(void);
   53: int kvm_has_many_ioeventfds(void);
   54: 
   55: #ifdef NEED_CPU_H
   56: int kvm_init_vcpu(CPUState *env);
   57: 
   58: int kvm_cpu_exec(CPUState *env);
   59: 
   60: #if !defined(CONFIG_USER_ONLY)
   61: void kvm_setup_guest_memory(void *start, size_t size);
   62: 
   63: int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
   64: int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
   65: void kvm_flush_coalesced_mmio_buffer(void);
   66: #endif
   67: 
   68: int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
   69:                           target_ulong len, int type);
   70: int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
   71:                           target_ulong len, int type);
   72: void kvm_remove_all_breakpoints(CPUState *current_env);
   73: int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
   74: #ifndef _WIN32
   75: int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
   76: #endif
   77: 
   78: int kvm_pit_in_kernel(void);
   79: int kvm_irqchip_in_kernel(void);
   80: 
   81: int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
   82: int kvm_on_sigbus(int code, void *addr);
   83: 
   84: /* internal API */
   85: 
   86: struct KVMState;
   87: typedef struct KVMState KVMState;
   88: extern KVMState *kvm_state;
   89: 
   90: int kvm_ioctl(KVMState *s, int type, ...);
   91: 
   92: int kvm_vm_ioctl(KVMState *s, int type, ...);
   93: 
   94: int kvm_vcpu_ioctl(CPUState *env, int type, ...);
   95: 
   96: /* Arch specific hooks */
   97: 
   98: extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
   99: 
  100: void kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
  101: void kvm_arch_post_run(CPUState *env, struct kvm_run *run);
  102: 
  103: int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
  104: 
  105: int kvm_arch_process_async_events(CPUState *env);
  106: 
  107: int kvm_arch_get_registers(CPUState *env);
  108: 
  109: /* state subset only touched by the VCPU itself during runtime */
  110: #define KVM_PUT_RUNTIME_STATE   1
  111: /* state subset modified during VCPU reset */
  112: #define KVM_PUT_RESET_STATE     2
  113: /* full state set, modified during initialization or on vmload */
  114: #define KVM_PUT_FULL_STATE      3
  115: 
  116: int kvm_arch_put_registers(CPUState *env, int level);
  117: 
  118: int kvm_arch_init(KVMState *s);
  119: 
  120: int kvm_arch_init_vcpu(CPUState *env);
  121: 
  122: void kvm_arch_reset_vcpu(CPUState *env);
  123: 
  124: int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr);
  125: int kvm_arch_on_sigbus(int code, void *addr);
  126: 
  127: struct kvm_guest_debug;
  128: struct kvm_debug_exit_arch;
  129: 
  130: struct kvm_sw_breakpoint {
  131:     target_ulong pc;
  132:     target_ulong saved_insn;
  133:     int use_count;
  134:     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
  135: };
  136: 
  137: QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
  138: 
  139: struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
  140:                                                  target_ulong pc);
  141: 
  142: int kvm_sw_breakpoints_active(CPUState *env);
  143: 
  144: int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
  145:                                   struct kvm_sw_breakpoint *bp);
  146: int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
  147:                                   struct kvm_sw_breakpoint *bp);
  148: int kvm_arch_insert_hw_breakpoint(target_ulong addr,
  149:                                   target_ulong len, int type);
  150: int kvm_arch_remove_hw_breakpoint(target_ulong addr,
  151:                                   target_ulong len, int type);
  152: void kvm_arch_remove_all_hw_breakpoints(void);
  153: 
  154: void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
  155: 
  156: bool kvm_arch_stop_on_emulation_error(CPUState *env);
  157: 
  158: int kvm_check_extension(KVMState *s, unsigned int extension);
  159: 
  160: uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
  161:                                       uint32_t index, int reg);
  162: void kvm_cpu_synchronize_state(CPUState *env);
  163: void kvm_cpu_synchronize_post_reset(CPUState *env);
  164: void kvm_cpu_synchronize_post_init(CPUState *env);
  165: 
  166: /* generic hooks - to be moved/refactored once there are more users */
  167: 
  168: static inline void cpu_synchronize_state(CPUState *env)
  169: {
  170:     if (kvm_enabled()) {
  171:         kvm_cpu_synchronize_state(env);
  172:     }
  173: }
  174: 
  175: static inline void cpu_synchronize_post_reset(CPUState *env)
  176: {
  177:     if (kvm_enabled()) {
  178:         kvm_cpu_synchronize_post_reset(env);
  179:     }
  180: }
  181: 
  182: static inline void cpu_synchronize_post_init(CPUState *env)
  183: {
  184:     if (kvm_enabled()) {
  185:         kvm_cpu_synchronize_post_init(env);
  186:     }
  187: }
  188: 
  189: 
  190: #if !defined(CONFIG_USER_ONLY)
  191: int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
  192:                                       target_phys_addr_t *phys_addr);
  193: #endif
  194: 
  195: #endif
  196: int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign);
  197: 
  198: int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
  199: #endif

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