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 int as_id; 50 QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_add; 51 QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_del; 52 } KVMMemoryListener; 53 54 #define KVM_MSI_HASHTAB_SIZE 256 55 56 typedef struct KVMHostTopoInfo { 57 /* Number of package on the Host */ 58 unsigned int maxpkgs; 59 /* Number of cpus on the Host */ 60 unsigned int maxcpus; 61 /* Number of cpus on each different package */ 62 unsigned int *pkg_cpu_count; 63 /* Each package can have different maxticks */ 64 unsigned int *maxticks; 65 } KVMHostTopoInfo; 66 67 struct KVMMsrEnergy { 68 pid_t pid; 69 bool enable; 70 char *socket_path; 71 QIOChannelSocket *sioc; 72 QemuThread msr_thr; 73 unsigned int guest_vcpus; 74 unsigned int guest_vsockets; 75 X86CPUTopoInfo guest_topo_info; 76 KVMHostTopoInfo host_topo; 77 const CPUArchIdList *guest_cpu_list; 78 uint64_t *msr_value; 79 uint64_t msr_unit; 80 uint64_t msr_limit; 81 uint64_t msr_info; 82 }; 83 84 enum KVMDirtyRingReaperState { 85 KVM_DIRTY_RING_REAPER_NONE = 0, 86 /* The reaper is sleeping */ 87 KVM_DIRTY_RING_REAPER_WAIT, 88 /* The reaper is reaping for dirty pages */ 89 KVM_DIRTY_RING_REAPER_REAPING, 90 }; 91 92 /* 93 * KVM reaper instance, responsible for collecting the KVM dirty bits 94 * via the dirty ring. 95 */ 96 struct KVMDirtyRingReaper { 97 /* The reaper thread */ 98 QemuThread reaper_thr; 99 volatile uint64_t reaper_iteration; /* iteration number of reaper thr */ 100 volatile enum KVMDirtyRingReaperState reaper_state; /* reap thr state */ 101 }; 102 struct KVMState 103 { 104 AccelState parent_obj; 105 106 int nr_slots; 107 int fd; 108 int vmfd; 109 int coalesced_mmio; 110 int coalesced_pio; 111 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; 112 bool coalesced_flush_in_progress; 113 int vcpu_events; 114 #ifdef TARGET_KVM_HAVE_GUEST_DEBUG 115 QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints; 116 #endif 117 int max_nested_state_len; 118 int kvm_shadow_mem; 119 bool kernel_irqchip_allowed; 120 bool kernel_irqchip_required; 121 OnOffAuto kernel_irqchip_split; 122 bool sync_mmu; 123 bool guest_state_protected; 124 uint64_t manual_dirty_log_protect; 125 /* 126 * Older POSIX says that ioctl numbers are signed int, but in 127 * practice they are not. (Newer POSIX doesn't specify ioctl 128 * at all.) Linux, glibc and *BSD all treat ioctl numbers as 129 * unsigned, and real-world ioctl values like KVM_GET_XSAVE have 130 * bit 31 set, which means that passing them via an 'int' will 131 * result in sign-extension when they get converted back to the 132 * 'unsigned long' which the ioctl() prototype uses. Luckily Linux 133 * always treats the argument as an unsigned 32-bit int, so any 134 * possible sign-extension is deliberately ignored, but for 135 * consistency we keep to the same type that glibc is using. 136 */ 137 unsigned long irq_set_ioctl; 138 unsigned int sigmask_len; 139 GHashTable *gsimap; 140 #ifdef KVM_CAP_IRQ_ROUTING 141 struct kvm_irq_routing *irq_routes; 142 int nr_allocated_irq_routes; 143 unsigned long *used_gsi_bitmap; 144 unsigned int gsi_count; 145 #endif 146 KVMMemoryListener memory_listener; 147 QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus; 148 149 /* For "info mtree -f" to tell if an MR is registered in KVM */ 150 int nr_as; 151 struct KVMAs { 152 KVMMemoryListener *ml; 153 AddressSpace *as; 154 } *as; 155 uint64_t kvm_dirty_ring_bytes; /* Size of the per-vcpu dirty ring */ 156 uint32_t kvm_dirty_ring_size; /* Number of dirty GFNs per ring */ 157 bool kvm_dirty_ring_with_bitmap; 158 uint64_t kvm_eager_split_size; /* Eager Page Splitting chunk size */ 159 struct KVMDirtyRingReaper reaper; 160 struct KVMMsrEnergy msr_energy; 161 NotifyVmexitOption notify_vmexit; 162 uint32_t notify_window; 163 uint32_t xen_version; 164 uint32_t xen_caps; 165 uint16_t xen_gnttab_max_frames; 166 uint16_t xen_evtchn_max_pirq; 167 char *device; 168 }; 169 170 void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml, 171 AddressSpace *as, int as_id, const char *name); 172 173 void kvm_set_max_memslot_size(hwaddr max_slot_size); 174 175 /** 176 * kvm_hwpoison_page_add: 177 * 178 * Parameters: 179 * @ram_addr: the address in the RAM for the poisoned page 180 * 181 * Add a poisoned page to the list 182 * 183 * Return: None. 184 */ 185 void kvm_hwpoison_page_add(ram_addr_t ram_addr); 186 #endif 187