github.com/google/syzkaller@v0.0.0-20251211124644-a066d2bc4b02/sys/linux/test/syz_kvm_setup_cpu_arm64-smc (about)

     1  #
     2  # requires: arch=arm64
     3  #
     4  r0 = openat$kvm(0, &AUTO='/dev/kvm\x00', 0x0, 0x0)
     5  r1 = ioctl$KVM_CREATE_VM(r0, AUTO, 0x0)
     6  #
     7  # KVM_SET_DEVICE_ATTR: group=KVM_ARM_VM_SMCCC_CTRL, attr=KVM_ARM_VM_SMCCC_FILTER
     8  # Filter: base=0xef000000, nr_functions=0x1000, action=KVM_SMCCC_FILTER_FWD_TO_USER
     9  # (Per SMC Calling Convention, 0xef000000-0xef001000 is an SMC64 fast call reserved range)
    10  # 
    11  ioctl$KVM_SET_DEVICE_ATTR_vm(r1, AUTO, &AUTO=@attr_arm64={0x0, 0x0, 0x0, &AUTO={0xef000000, 0x1000, 0x2, ""}})
    12  
    13  r2 = ioctl$KVM_CREATE_VCPU(r1, AUTO, 0x0)
    14  syz_kvm_setup_cpu$arm64(r1, r2, &(0x7f0000e8a000/0x18000)=nil, &AUTO=[{0x0, &AUTO=[@smc={AUTO, AUTO, {0xef000000, [0x0, 0x1, 0x2, 0x3, 0x4]}}, @hvc={AUTO, AUTO, {0xef000000, [0x0, 0x1, 0x2, 0x3, 0x4]}}], AUTO}], 0x1, 0x0, 0x0, 0x0)
    15  
    16  #
    17  # Run twice, because both SMC and HVC will exit.
    18  #
    19  ioctl$KVM_RUN(r2, AUTO, 0x0)
    20  ioctl$KVM_RUN(r2, AUTO, 0x0)