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 #ifdef __s390__
  22 #define KVM_MAX_NUM_MEM_REGIONS 1u
  23 #define MAX_VCPUS 64
  24 #define LIBKVM_S390_ORIGIN (0UL)
  25 #elif __ia64__
  26 #define KVM_MAX_NUM_MEM_REGIONS 32u
  27 #define MAX_VCPUS 256
  28 #else
  29 #define KVM_MAX_NUM_MEM_REGIONS 32u
  30 #define MAX_VCPUS 16
  31 #endif
  32
  33
  34 /* kvm abi verison variable */
  35 extern int kvm_abi;
  36
  37 /**
  38  * \brief The KVM context
  39  *
  40  * The verbose KVM context
  41  */
  42
  43 struct kvm_context {
  44         /// Filedescriptor to /dev/kvm
  45         int fd;
  46         int vm_fd;
  47         int vcpu_fd[MAX_VCPUS];
  48         struct kvm_run *run[MAX_VCPUS];
  49         /// Callbacks that KVM uses to emulate various unvirtualizable functionality
  50         struct kvm_callbacks *callbacks;
  51         void *opaque;
  52         /// is dirty pages logging enabled for all regions or not
  53         int dirty_pages_log_all;
  54         /// do not create in-kernel irqchip if set
  55         int no_irqchip_creation;
  56         /// in-kernel irqchip status
  57         int irqchip_in_kernel;
  58         /// do not create in-kernel pit if set
  59         int no_pit_creation;
  60         /// in-kernel pit status
  61         int pit_in_kernel;
  62         /// in-kernel coalesced mmio
  63         int coalesced_mmio;
  64 };
  65
  66 void init_slots(void);
  67 int get_free_slot(kvm_context_t kvm);
  68 void register_slot(int slot, unsigned long phys_addr, unsigned long len,
  69                    unsigned long userspace_addr, unsigned flags);
  70
  71 void free_slot(int slot);
  72 int get_slot(unsigned long phys_addr);
  73
  74 int kvm_alloc_kernel_memory(kvm_context_t kvm, unsigned long memory,
  75                                                                 void **vm_mem);
  76 int kvm_alloc_userspace_memory(kvm_context_t kvm, unsigned long memory,
  77                                                                 void **vm_mem);
  78
  79 int kvm_arch_create(kvm_context_t kvm, unsigned long phys_mem_bytes,
  80                         void **vm_mem);
  81 int kvm_arch_run(struct kvm_run *run, kvm_context_t kvm, int vcpu);
  82
  83
  84 void kvm_show_code(kvm_context_t kvm, int vcpu);
  85
  86 int handle_halt(kvm_context_t kvm, int vcpu);
  87 int handle_shutdown(kvm_context_t kvm, int vcpu);
  88 void post_kvm_run(kvm_context_t kvm, int vcpu);
  89 int pre_kvm_run(kvm_context_t kvm, int vcpu);
  90 int handle_io_window(kvm_context_t kvm);
  91 int handle_debug(kvm_context_t kvm, int vcpu);
  92 int try_push_interrupts(kvm_context_t kvm);
  93
  94 #endif