Commit fe29141b authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Paolo Bonzini
Browse files

kvm: Add kvm_set_user_memory tracepoint 



This adds a tracepoint to trace the KVM_SET_USER_MEMORY_REGION ioctl
parameters which is quite useful for debugging VFIO memory regions
being actually registered with KVM.

Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20171215052326.21386-1-aik@ozlabs.ru>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent bf853881

accel/kvm/kvm-all.c

+5 −1
Original line number Diff line number Diff line
@@ -235,6 +235,7 @@ static int kvm_set_user_memory_region(KVMMemoryListener *kml, KVMSlot *slot) 
{

    KVMState *s = kvm_state;

    struct kvm_userspace_memory_region mem;

    int ret;



    mem.slot = slot->slot | (kml->as_id << 16);

    mem.guest_phys_addr = slot->start_addr;
@@ -248,7 +249,10 @@ static int kvm_set_user_memory_region(KVMMemoryListener *kml, KVMSlot *slot) 
        kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);

    }

    mem.memory_size = slot->memory_size;

    return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);

    ret = kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);

    trace_kvm_set_user_memory(mem.slot, mem.flags, mem.guest_phys_addr,

                              mem.memory_size, mem.userspace_addr, ret);

    return ret;

}



int kvm_destroy_vcpu(CPUState *cpu)

accel/kvm/trace-events

+1 −0
Original line number Diff line number Diff line
@@ -12,4 +12,5 @@ kvm_irqchip_commit_routes(void) "" 
kvm_irqchip_add_msi_route(char *name, int vector, int virq) "dev %s vector %d virq %d"

kvm_irqchip_update_msi_route(int virq) "Updating MSI route virq=%d"

kvm_irqchip_release_virq(int virq) "virq %d"

kvm_set_user_memory(uint32_t slot, uint32_t flags, uint64_t guest_phys_addr, uint64_t memory_size, uint64_t userspace_addr, int ret) "Slot#%d flags=0x%x gpa=0x%"PRIx64 " size=0x%"PRIx64 " ua=0x%"PRIx64 " ret=%d"