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