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 #ifndef __s390__
  22 #define KVM_MAX_NUM_MEM_REGIONS 8u
  23 #define MAX_VCPUS 16
  24 #else
  25 #define KVM_MAX_NUM_MEM_REGIONS 1u
  26 #define MAX_VCPUS 64
  27 #define LIBKVM_S390_ORIGIN (0UL)
  28 #endif
  29
  30
  31 /* kvm abi verison variable */
  32 extern int kvm_abi;
  33
  34 /**
  35  * \brief The KVM context
  36  *
  37  * The verbose KVM context
  38  */
  39
  40 struct kvm_context {
  41         /// Filedescriptor to /dev/kvm
  42         int fd;
  43         int vm_fd;
  44         int vcpu_fd[MAX_VCPUS];
  45         struct kvm_run *run[MAX_VCPUS];
  46         /// Callbacks that KVM uses to emulate various unvirtualizable functionality
  47         struct kvm_callbacks *callbacks;
  48         void *opaque;
  49         /// is dirty pages logging enabled for all regions or not
  50         int dirty_pages_log_all;
  51         /// do not create in-kernel irqchip if set
  52         int no_irqchip_creation;
  53         /// in-kernel irqchip status
  54         int irqchip_in_kernel;
  55         /// do not create in-kernel pit if set
  56         int no_pit_creation;
  57         /// in-kernel pit status
  58         int pit_in_kernel;
  59         /// in-kernel coalesced mmio
  60         int coalesced_mmio;
  61 };
  62
  63 void init_slots(void);
  64 int get_free_slot(kvm_context_t kvm);
  65 void register_slot(int slot, unsigned long phys_addr, unsigned long len,
  66                    int user_alloc, unsigned long userspace_addr, unsigned flags);
  67
  68 void free_slot(int slot);
  69 int get_slot(unsigned long phys_addr);
  70
  71 int kvm_alloc_kernel_memory(kvm_context_t kvm, unsigned long memory,
  72                                                                 void **vm_mem);
  73 int kvm_alloc_userspace_memory(kvm_context_t kvm, unsigned long memory,
  74                                                                 void **vm_mem);
  75 void *kvm_create_kernel_phys_mem(kvm_context_t kvm, unsigned long phys_start,
  76                         unsigned long len, int log, int writable);
  77
  78
  79 int kvm_arch_create(kvm_context_t kvm, unsigned long phys_mem_bytes,
  80                         void **vm_mem);
  81 int kvm_arch_create_default_phys_mem(kvm_context_t kvm,
  82                                        unsigned long phys_mem_bytes,
  83                                        void **vm_mem);
  84 int kvm_arch_run(struct kvm_run *run, kvm_context_t kvm, int vcpu);
  85
  86
  87 void kvm_show_code(kvm_context_t kvm, int vcpu);
  88
  89 int handle_halt(kvm_context_t kvm, int vcpu);
  90 int handle_shutdown(kvm_context_t kvm, int vcpu);
  91 void post_kvm_run(kvm_context_t kvm, int vcpu);
  92 int pre_kvm_run(kvm_context_t kvm, int vcpu);
  93 int handle_io_window(kvm_context_t kvm);
  94 int handle_debug(kvm_context_t kvm, int vcpu);
  95 int try_push_interrupts(kvm_context_t kvm);
  96
  97 #endif