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Diffstat (limited to 'include/system/kvm_int.h')
| -rw-r--r-- | include/system/kvm_int.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/include/system/kvm_int.h b/include/system/kvm_int.h new file mode 100644 index 0000000000..4de6106869 --- /dev/null +++ b/include/system/kvm_int.h @@ -0,0 +1,187 @@ +/* + * Internal definitions for a target's KVM support + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef QEMU_KVM_INT_H +#define QEMU_KVM_INT_H + +#include "exec/memory.h" +#include "qapi/qapi-types-common.h" +#include "qemu/accel.h" +#include "qemu/queue.h" +#include "system/kvm.h" +#include "hw/boards.h" +#include "hw/i386/topology.h" +#include "io/channel-socket.h" + +typedef struct KVMSlot +{ + hwaddr start_addr; + ram_addr_t memory_size; + void *ram; + int slot; + int flags; + int old_flags; + /* Dirty bitmap cache for the slot */ + unsigned long *dirty_bmap; + unsigned long dirty_bmap_size; + /* Cache of the address space ID */ + int as_id; + /* Cache of the offset in ram address space */ + ram_addr_t ram_start_offset; + int guest_memfd; + hwaddr guest_memfd_offset; +} KVMSlot; + +typedef struct KVMMemoryUpdate { + QSIMPLEQ_ENTRY(KVMMemoryUpdate) next; + MemoryRegionSection section; +} KVMMemoryUpdate; + +typedef struct KVMMemoryListener { + MemoryListener listener; + KVMSlot *slots; + unsigned int nr_slots_used; + unsigned int nr_slots_allocated; + int as_id; + QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_add; + QSIMPLEQ_HEAD(, KVMMemoryUpdate) transaction_del; +} KVMMemoryListener; + +#define KVM_MSI_HASHTAB_SIZE 256 + +typedef struct KVMHostTopoInfo { + /* Number of package on the Host */ + unsigned int maxpkgs; + /* Number of cpus on the Host */ + unsigned int maxcpus; + /* Number of cpus on each different package */ + unsigned int *pkg_cpu_count; + /* Each package can have different maxticks */ + unsigned int *maxticks; +} KVMHostTopoInfo; + +struct KVMMsrEnergy { + pid_t pid; + bool enable; + char *socket_path; + QIOChannelSocket *sioc; + QemuThread msr_thr; + unsigned int guest_vcpus; + unsigned int guest_vsockets; + X86CPUTopoInfo guest_topo_info; + KVMHostTopoInfo host_topo; + const CPUArchIdList *guest_cpu_list; + uint64_t *msr_value; + uint64_t msr_unit; + uint64_t msr_limit; + uint64_t msr_info; +}; + +enum KVMDirtyRingReaperState { + KVM_DIRTY_RING_REAPER_NONE = 0, + /* The reaper is sleeping */ + KVM_DIRTY_RING_REAPER_WAIT, + /* The reaper is reaping for dirty pages */ + KVM_DIRTY_RING_REAPER_REAPING, +}; + +/* + * KVM reaper instance, responsible for collecting the KVM dirty bits + * via the dirty ring. + */ +struct KVMDirtyRingReaper { + /* The reaper thread */ + QemuThread reaper_thr; + volatile uint64_t reaper_iteration; /* iteration number of reaper thr */ + volatile enum KVMDirtyRingReaperState reaper_state; /* reap thr state */ +}; +struct KVMState +{ + AccelState parent_obj; + /* Max number of KVM slots supported */ + int nr_slots_max; + int fd; + int vmfd; + int coalesced_mmio; + int coalesced_pio; + struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; + bool coalesced_flush_in_progress; + int vcpu_events; +#ifdef TARGET_KVM_HAVE_GUEST_DEBUG + QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints; +#endif + int max_nested_state_len; + int kvm_shadow_mem; + bool kernel_irqchip_allowed; + bool kernel_irqchip_required; + OnOffAuto kernel_irqchip_split; + bool sync_mmu; + bool guest_state_protected; + uint64_t manual_dirty_log_protect; + /* + * Older POSIX says that ioctl numbers are signed int, but in + * practice they are not. (Newer POSIX doesn't specify ioctl + * at all.) Linux, glibc and *BSD all treat ioctl numbers as + * unsigned, and real-world ioctl values like KVM_GET_XSAVE have + * bit 31 set, which means that passing them via an 'int' will + * result in sign-extension when they get converted back to the + * 'unsigned long' which the ioctl() prototype uses. Luckily Linux + * always treats the argument as an unsigned 32-bit int, so any + * possible sign-extension is deliberately ignored, but for + * consistency we keep to the same type that glibc is using. + */ + unsigned long irq_set_ioctl; + unsigned int sigmask_len; + GHashTable *gsimap; +#ifdef KVM_CAP_IRQ_ROUTING + struct kvm_irq_routing *irq_routes; + int nr_allocated_irq_routes; + unsigned long *used_gsi_bitmap; + unsigned int gsi_count; +#endif + KVMMemoryListener memory_listener; + QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus; + + /* For "info mtree -f" to tell if an MR is registered in KVM */ + int nr_as; + struct KVMAs { + KVMMemoryListener *ml; + AddressSpace *as; + } *as; + uint64_t kvm_dirty_ring_bytes; /* Size of the per-vcpu dirty ring */ + uint32_t kvm_dirty_ring_size; /* Number of dirty GFNs per ring */ + bool kvm_dirty_ring_with_bitmap; + uint64_t kvm_eager_split_size; /* Eager Page Splitting chunk size */ + struct KVMDirtyRingReaper reaper; + struct KVMMsrEnergy msr_energy; + NotifyVmexitOption notify_vmexit; + uint32_t notify_window; + uint32_t xen_version; + uint32_t xen_caps; + uint16_t xen_gnttab_max_frames; + uint16_t xen_evtchn_max_pirq; + char *device; +}; + +void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml, + AddressSpace *as, int as_id, const char *name); + +void kvm_set_max_memslot_size(hwaddr max_slot_size); + +/** + * kvm_hwpoison_page_add: + * + * Parameters: + * @ram_addr: the address in the RAM for the poisoned page + * + * Add a poisoned page to the list + * + * Return: None. + */ +void kvm_hwpoison_page_add(ram_addr_t ram_addr); +#endif |