include/sysemu/kvm_int.h

   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 "qemu/queue.h"
  16 #include "sysemu/kvm.h"
  17
  18 typedef struct KVMSlot
  19 {
  20     hwaddr start_addr;
  21     ram_addr_t memory_size;
  22     void *ram;
  23     int slot;
  24     int flags;
  25     int old_flags;
  26     /* Dirty bitmap cache for the slot */
  27     unsigned long *dirty_bmap;
  28     unsigned long dirty_bmap_size;
  29     /* Cache of the address space ID */
  30     int as_id;
  31     /* Cache of the offset in ram address space */
  32     ram_addr_t ram_start_offset;
  33     int guest_memfd;
  34     hwaddr guest_memfd_offset;
  35 } KVMSlot;
  36
  37 typedef struct KVMMemoryUpdate {
  38     QSIMPLEQ_ENTRY(KVMMemoryUpdate) next;
  39     MemoryRegionSection section;
  40 } KVMMemoryUpdate;
  41
  42 typedef struct KVMMemoryListener {
  43     MemoryListener listener;
  44     KVMSlot *slots;
  45     unsigned int nr_used_slots;
  46     int as_id;
  47     QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_add;
  48     QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_del;
  49 } KVMMemoryListener;
  50
  51 #define KVM_MSI_HASHTAB_SIZE    256
  52
  53 enum KVMDirtyRingReaperState {
  54     KVM_DIRTY_RING_REAPER_NONE = 0,
  55     /* The reaper is sleeping */
  56     KVM_DIRTY_RING_REAPER_WAIT,
  57     /* The reaper is reaping for dirty pages */
  58     KVM_DIRTY_RING_REAPER_REAPING,
  59 };
  60
  61 /*
  62  * KVM reaper instance, responsible for collecting the KVM dirty bits
  63  * via the dirty ring.
  64  */
  65 struct KVMDirtyRingReaper {
  66     /* The reaper thread */
  67     QemuThread reaper_thr;
  68     volatile uint64_t reaper_iteration; /* iteration number of reaper thr */
  69     volatile enum KVMDirtyRingReaperState reaper_state; /* reap thr state */
  70 };
  71 struct KVMState
  72 {
  73     AccelState parent_obj;
  74
  75     int nr_slots;
  76     int fd;
  77     int vmfd;
  78     int coalesced_mmio;
  79     int coalesced_pio;
  80     struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
  81     bool coalesced_flush_in_progress;
  82     int vcpu_events;
  83 #ifdef TARGET_KVM_HAVE_GUEST_DEBUG
  84     QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints;
  85 #endif
  86     int max_nested_state_len;
  87     int kvm_shadow_mem;
  88     bool kernel_irqchip_allowed;
  89     bool kernel_irqchip_required;
  90     OnOffAuto kernel_irqchip_split;
  91     bool sync_mmu;
  92     bool guest_state_protected;
  93     uint64_t manual_dirty_log_protect;
  94     /* The man page (and posix) say ioctl numbers are signed int, but
  95      * they're not.  Linux, glibc and *BSD all treat ioctl numbers as
  96      * unsigned, and treating them as signed here can break things */
  97     unsigned irq_set_ioctl;
  98     unsigned int sigmask_len;
  99     GHashTable *gsimap;
 100 #ifdef KVM_CAP_IRQ_ROUTING
 101     struct kvm_irq_routing *irq_routes;
 102     int nr_allocated_irq_routes;
 103     unsigned long *used_gsi_bitmap;
 104     unsigned int gsi_count;
 105 #endif
 106     KVMMemoryListener memory_listener;
 107     QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus;
 108
 109     /* For "info mtree -f" to tell if an MR is registered in KVM */
 110     int nr_as;
 111     struct KVMAs {
 112         KVMMemoryListener *ml;
 113         AddressSpace *as;
 114     } *as;
 115     uint64_t kvm_dirty_ring_bytes;  /* Size of the per-vcpu dirty ring */
 116     uint32_t kvm_dirty_ring_size;   /* Number of dirty GFNs per ring */
 117     bool kvm_dirty_ring_with_bitmap;
 118     uint64_t kvm_eager_split_size;  /* Eager Page Splitting chunk size */
 119     struct KVMDirtyRingReaper reaper;
 120     NotifyVmexitOption notify_vmexit;
 121     uint32_t notify_window;
 122     uint32_t xen_version;
 123     uint32_t xen_caps;
 124     uint16_t xen_gnttab_max_frames;
 125     uint16_t xen_evtchn_max_pirq;
 126     char *device;
 127 };
 128
 129 void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml,
 130                                   AddressSpace *as, int as_id, const char *name);
 131
 132 void kvm_set_max_memslot_size(hwaddr max_slot_size);
 133
 134 /**
 135  * kvm_hwpoison_page_add:
 136  *
 137  * Parameters:
 138  *  @ram_addr: the address in the RAM for the poisoned page
 139  *
 140  * Add a poisoned page to the list
 141  *
 142  * Return: None.
 143  */
 144 void kvm_hwpoison_page_add(ram_addr_t ram_addr);
 145 #endif