kvm/libkvm/kvm-common.h

   1 /*
   2  * This header is for functions & variables that will ONLY be
   3  * used inside libkvm.
   4  *
   5  * derived from libkvm.c
   6  *
   7  * Copyright (C) 2006 Qumranet, Inc.
   8  *
   9  * Authors:
  10  *      Avi Kivity   <avi@qumranet.com>
  11  *      Yaniv Kamay  <yaniv@qumranet.com>
  12  *
  13  *   This work is licensed under the GNU LGPL license, version 2.
  14  */
  15
  16 #ifndef KVM_COMMON_H
  17 #define KVM_COMMON_H
  18
  19 /* FIXME: share this number with kvm */
  20 /* FIXME: or dynamically alloc/realloc regions */
  21 #define KVM_MAX_NUM_MEM_REGIONS 8u
  22 #define MAX_VCPUS 4
  23
  24 /* kvm abi verison variable */
  25 extern int kvm_abi;
  26
  27 /**
  28  * \brief The KVM context
  29  *
  30  * The verbose KVM context
  31  */
  32
  33 struct kvm_context {
  34         /// Filedescriptor to /dev/kvm
  35         int fd;
  36         int vm_fd;
  37         int vcpu_fd[MAX_VCPUS];
  38         struct kvm_run *run[MAX_VCPUS];
  39         /// Callbacks that KVM uses to emulate various unvirtualizable functionality
  40         struct kvm_callbacks *callbacks;
  41         void *opaque;
  42         /// A pointer to the memory used as the physical memory for the guest
  43         void *physical_memory;
  44         /// is dirty pages logging enabled for all regions or not
  45         int dirty_pages_log_all;
  46         /// memory regions parameters
  47         struct kvm_memory_region mem_regions[KVM_MAX_NUM_MEM_REGIONS];
  48         /// do not create in-kernel irqchip if set
  49         int no_irqchip_creation;
  50         /// in-kernel irqchip status
  51         int irqchip_in_kernel;
  52 };
  53
  54 void init_slots(void);
  55 int get_free_slot(kvm_context_t kvm);
  56 void register_slot(int slot, unsigned long phys_addr, unsigned long len,
  57                    int user_alloc, unsigned long userspace_addr);
  58 void free_slot(int slot);
  59 int get_slot(unsigned long phys_addr);
  60 void kvm_memory_region_save_params(kvm_context_t kvm,
  61                                         struct kvm_memory_region *mem);
  62 void kvm_userspace_memory_region_save_params(kvm_context_t kvm,
  63                                 struct kvm_userspace_memory_region *mem);
  64 void kvm_memory_region_clear_params(kvm_context_t kvm, int regnum);
  65
  66 int kvm_arch_create(kvm_context_t kvm, unsigned long phys_mem_bytes,
  67                         void **vm_mem);
  68 int kvm_arch_create_default_phys_mem(kvm_context_t kvm,
  69                                        unsigned long phys_mem_bytes,
  70                                        void **vm_mem);
  71
  72 int handle_halt(kvm_context_t kvm, int vcpu);
  73 int handle_shutdown(kvm_context_t kvm, int vcpu);
  74 void post_kvm_run(kvm_context_t kvm, int vcpu);
  75 int pre_kvm_run(kvm_context_t kvm, int vcpu);
  76 int handle_io_window(kvm_context_t kvm);
  77 int handle_debug(kvm_context_t kvm, int vcpu);
  78 int try_push_interrupts(kvm_context_t kvm);
  79
  80 #endif