#
# requires: arch=amd64 -threaded
#
r0 = openat$kvm(0, &AUTO='/dev/kvm\x00', 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, AUTO, 0x0)
r2 = syz_kvm_setup_syzos_vm$x86(r1, &(0x7f0000c00000/0x400000)=nil)

# Test AMD Nested Intercepts: The RDTSC Liberation
#
# 1. L1 Setup:
#    - SYZOS initializes VMCB with ALL intercepts enabled.
#    - We call SET_INTERCEPT to *CLEAR* the RDTSC intercept.
#      - Offset: 0xC (Control Vector 1)
#      - Bit: 14 (0x4000) = RDTSC
#      - Action: 0 (Clear/Disable)
#
# 2. L2 Payload:
#    - "rdtsc" (0x0f 0x31)
#    - "hlt"   (0xf4)
#
# 3. Execution Flow:
#    - If RDTSC is intercepted: Exit Reason = RDTSC (0x4).
#    - If RDTSC is native: executes RDTSC -> executes HLT -> Exit Reason = HLT (0x1).
#
r3 = syz_kvm_add_vcpu$x86(r2, &AUTO={0x0, &AUTO=[@enable_nested={AUTO, AUTO, 0x0}, @nested_create_vm={AUTO, AUTO, 0x0}, @nested_amd_set_intercept={AUTO, AUTO, {0x0, 0xC, 0x4000, 0x0}}, @nested_load_code={AUTO, AUTO, {0x0, "0f31f4"}}, @nested_vmlaunch={AUTO, AUTO, 0x0}], AUTO})
r4 = ioctl$KVM_GET_VCPU_MMAP_SIZE(r0, AUTO)
r5 = mmap$KVM_VCPU(&(0x7f0000009000/0x1000)=nil, r4, 0x3, 0x1, r3, 0x0)

# Run the VCPU.
# Expectation: Success (Native Execution) -> HLT Exit.
# Code: 0xe2e20001 (SYZOS_NESTED_EXIT_REASON_HLT)
#
ioctl$KVM_RUN(r3, AUTO, 0x0)
syz_kvm_assert_syzos_uexit$x86(r3, r5, 0xe2e20001)

# Cleanup
#
ioctl$KVM_RUN(r3, AUTO, 0x0)
syz_kvm_assert_syzos_uexit$x86(r3, r5, 0xffffffffffffffff)