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 #include "hw/boards.h" 18 #include "hw/i386/topology.h" 19 #include "io/channel-socket.h" 20 21 typedef struct KVMSlot 22 { 23 hwaddr start_addr; 24 ram_addr_t memory_size; 25 void *ram; 26 int slot; 27 int flags; 28 int old_flags; 29 /* Dirty bitmap cache for the slot */ 30 unsigned long *dirty_bmap; 31 unsigned long dirty_bmap_size; 32 /* Cache of the address space ID */ 33 int as_id; 34 /* Cache of the offset in ram address space */ 35 ram_addr_t ram_start_offset; 36 int guest_memfd; 37 hwaddr guest_memfd_offset; 38 } KVMSlot; 39 40 typedef struct KVMMemoryUpdate { 41 QSIMPLEQ_ENTRY(KVMMemoryUpdate) next; 42 MemoryRegionSection section; 43 } KVMMemoryUpdate; 44 45 typedef struct KVMMemoryListener { 46 MemoryListener listener; 47 KVMSlot *slots; 48 unsigned int nr_used_slots; 49 unsigned int nr_slots_allocated; 50 int as_id; 51 QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_add; 52 QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_del; 53 } KVMMemoryListener; 54 55 #define KVM_MSI_HASHTAB_SIZE 256 56 57 typedef struct KVMHostTopoInfo { 58 /* Number of package on the Host */ 59 unsigned int maxpkgs; 60 /* Number of cpus on the Host */ 61 unsigned int maxcpus; 62 /* Number of cpus on each different package */ 63 unsigned int *pkg_cpu_count; 64 /* Each package can have different maxticks */ 65 unsigned int *maxticks; 66 } KVMHostTopoInfo; 67 68 struct KVMMsrEnergy { 69 pid_t pid; 70 bool enable; 71 char *socket_path; 72 QIOChannelSocket *sioc; 73 QemuThread msr_thr; 74 unsigned int guest_vcpus; 75 unsigned int guest_vsockets; 76 X86CPUTopoInfo guest_topo_info; 77 KVMHostTopoInfo host_topo; 78 const CPUArchIdList *guest_cpu_list; 79 uint64_t *msr_value; 80 uint64_t msr_unit; 81 uint64_t msr_limit; 82 uint64_t msr_info; 83 }; 84 85 enum KVMDirtyRingReaperState { 86 KVM_DIRTY_RING_REAPER_NONE = 0, 87 /* The reaper is sleeping */ 88 KVM_DIRTY_RING_REAPER_WAIT, 89 /* The reaper is reaping for dirty pages */ 90 KVM_DIRTY_RING_REAPER_REAPING, 91 }; 92 93 /* 94 * KVM reaper instance, responsible for collecting the KVM dirty bits 95 * via the dirty ring. 96 */ 97 struct KVMDirtyRingReaper { 98 /* The reaper thread */ 99 QemuThread reaper_thr; 100 volatile uint64_t reaper_iteration; /* iteration number of reaper thr */ 101 volatile enum KVMDirtyRingReaperState reaper_state; /* reap thr state */ 102 }; 103 struct KVMState 104 { 105 AccelState parent_obj; 106 107 int nr_slots; 108 int fd; 109 int vmfd; 110 int coalesced_mmio; 111 int coalesced_pio; 112 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; 113 bool coalesced_flush_in_progress; 114 int vcpu_events; 115 #ifdef TARGET_KVM_HAVE_GUEST_DEBUG 116 QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints; 117 #endif 118 int max_nested_state_len; 119 int kvm_shadow_mem; 120 bool kernel_irqchip_allowed; 121 bool kernel_irqchip_required; 122 OnOffAuto kernel_irqchip_split; 123 bool sync_mmu; 124 bool guest_state_protected; 125 uint64_t manual_dirty_log_protect; 126 /* The man page (and posix) say ioctl numbers are signed int, but 127 * they're not. Linux, glibc and *BSD all treat ioctl numbers as 128 * unsigned, and treating them as signed here can break things */ 129 unsigned irq_set_ioctl; 130 unsigned int sigmask_len; 131 GHashTable *gsimap; 132 #ifdef KVM_CAP_IRQ_ROUTING 133 struct kvm_irq_routing *irq_routes; 134 int nr_allocated_irq_routes; 135 unsigned long *used_gsi_bitmap; 136 unsigned int gsi_count; 137 #endif 138 KVMMemoryListener memory_listener; 139 QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus; 140 141 /* For "info mtree -f" to tell if an MR is registered in KVM */ 142 int nr_as; 143 struct KVMAs { 144 KVMMemoryListener *ml; 145 AddressSpace *as; 146 } *as; 147 uint64_t kvm_dirty_ring_bytes; /* Size of the per-vcpu dirty ring */ 148 uint32_t kvm_dirty_ring_size; /* Number of dirty GFNs per ring */ 149 bool kvm_dirty_ring_with_bitmap; 150 uint64_t kvm_eager_split_size; /* Eager Page Splitting chunk size */ 151 struct KVMDirtyRingReaper reaper; 152 struct KVMMsrEnergy msr_energy; 153 NotifyVmexitOption notify_vmexit; 154 uint32_t notify_window; 155 uint32_t xen_version; 156 uint32_t xen_caps; 157 uint16_t xen_gnttab_max_frames; 158 uint16_t xen_evtchn_max_pirq; 159 char *device; 160 }; 161 162 void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml, 163 AddressSpace *as, int as_id, const char *name); 164 165 void kvm_set_max_memslot_size(hwaddr max_slot_size); 166 167 /** 168 * kvm_hwpoison_page_add: 169 * 170 * Parameters: 171 * @ram_addr: the address in the RAM for the poisoned page 172 * 173 * Add a poisoned page to the list 174 * 175 * Return: None. 176 */ 177 void kvm_hwpoison_page_add(ram_addr_t ram_addr); 178 #endif 179