LXR qemu/include/sysemu/kvm

   1/*
   2 * Internal definitions for a target's KVM support
   3 *
   4 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   5 * See the COPYING file in the top-level directory.
   6 *
   7 */
   8
   9#ifndef QEMU_KVM_INT_H
  10#define QEMU_KVM_INT_H
  11
  12#include "exec/memory.h"
  13#include "qapi/qapi-types-common.h"
  14#include "qemu/accel.h"
  15#include "sysemu/kvm.h"
  16
  17typedef struct KVMSlot
  18{
  19    hwaddr start_addr;
  20    ram_addr_t memory_size;
  21    void *ram;
  22    int slot;
  23    int flags;
  24    int old_flags;
  25    /* Dirty bitmap cache for the slot */
  26    unsigned long *dirty_bmap;
  27    unsigned long dirty_bmap_size;
  28    /* Cache of the address space ID */
  29    int as_id;
  30    /* Cache of the offset in ram address space */
  31    ram_addr_t ram_start_offset;
  32} KVMSlot;
  33
  34typedef struct KVMMemoryListener {
  35    MemoryListener listener;
  36    KVMSlot *slots;
  37    int as_id;
  38} KVMMemoryListener;
  39
  40#define KVM_MSI_HASHTAB_SIZE    256
  41
  42enum KVMDirtyRingReaperState {
  43    KVM_DIRTY_RING_REAPER_NONE = 0,
  44    /* The reaper is sleeping */
  45    KVM_DIRTY_RING_REAPER_WAIT,
  46    /* The reaper is reaping for dirty pages */
  47    KVM_DIRTY_RING_REAPER_REAPING,
  48};
  49
  50/*
  51 * KVM reaper instance, responsible for collecting the KVM dirty bits
  52 * via the dirty ring.
  53 */
  54struct KVMDirtyRingReaper {
  55    /* The reaper thread */
  56    QemuThread reaper_thr;
  57    volatile uint64_t reaper_iteration; /* iteration number of reaper thr */
  58    volatile enum KVMDirtyRingReaperState reaper_state; /* reap thr state */
  59};
  60struct KVMState
  61{
  62    AccelState parent_obj;
  63
  64    int nr_slots;
  65    int fd;
  66    int vmfd;
  67    int coalesced_mmio;
  68    int coalesced_pio;
  69    struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
  70    bool coalesced_flush_in_progress;
  71    int vcpu_events;
  72    int robust_singlestep;
  73    int debugregs;
  74#ifdef KVM_CAP_SET_GUEST_DEBUG
  75    QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints;
  76#endif
  77    int max_nested_state_len;
  78    int many_ioeventfds;
  79    int intx_set_mask;
  80    int kvm_shadow_mem;
  81    bool kernel_irqchip_allowed;
  82    bool kernel_irqchip_required;
  83    OnOffAuto kernel_irqchip_split;
  84    bool sync_mmu;
  85    uint64_t manual_dirty_log_protect;
  86    /* The man page (and posix) say ioctl numbers are signed int, but
  87     * they're not.  Linux, glibc and *BSD all treat ioctl numbers as
  88     * unsigned, and treating them as signed here can break things */
  89    unsigned irq_set_ioctl;
  90    unsigned int sigmask_len;
  91    GHashTable *gsimap;
  92#ifdef KVM_CAP_IRQ_ROUTING
  93    struct kvm_irq_routing *irq_routes;
  94    int nr_allocated_irq_routes;
  95    unsigned long *used_gsi_bitmap;
  96    unsigned int gsi_count;
  97    QTAILQ_HEAD(, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE];
  98#endif
  99    KVMMemoryListener memory_listener;
 100    QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus;
 101
 102    /* For "info mtree -f" to tell if an MR is registered in KVM */
 103    int nr_as;
 104    struct KVMAs {
 105        KVMMemoryListener *ml;
 106        AddressSpace *as;
 107    } *as;
 108    uint64_t kvm_dirty_ring_bytes;  /* Size of the per-vcpu dirty ring */
 109    uint32_t kvm_dirty_ring_size;   /* Number of dirty GFNs per ring */
 110    struct KVMDirtyRingReaper reaper;
 111    NotifyVmexitOption notify_vmexit;
 112    uint32_t notify_window;
 113};
 114
 115void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml,
 116                                  AddressSpace *as, int as_id, const char *name);
 117
 118void kvm_set_max_memslot_size(hwaddr max_slot_size);
 119
 120/**
 121 * kvm_hwpoison_page_add:
 122 *
 123 * Parameters:
 124 *  @ram_addr: the address in the RAM for the poisoned page
 125 *
 126 * Add a poisoned page to the list
 127 *
 128 * Return: None.
 129 */
 130void kvm_hwpoison_page_add(ram_addr_t ram_addr);
 131#endif
 132