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.intel_syntax noprefix
.section .boot, "ax", @progbits
// Trigger `KVM_EXIT_IO:KVM_EXIT_IO_OUT` by writing string to output port.
mov rdx, 0x1000 // Output port.
lea rsi, [rip + msg] // Address of string.
mov rcx, [rip + msg_len] // Len of string.
rep outsb // Write ds:rsi to output port rdx.
// Trigger `KVM_EXIT_HLT`.
hlt
.section .rodata, "a", @progbits
msg:
.asciz "Hello from Long Mode!\n"
msg_len:
.byte .-msg
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