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docs(x86_64): add explantory comment to qemu_exit #2015

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Oct 28, 2025
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docs(x86_64): add explantory comment to qemu_exit #2015

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3 changes: 3 additions & 0 deletions src/arch/x86_64/kernel/processor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1088,6 +1088,9 @@ fn triple_fault() -> ! {
unreachable!()
}

/// Writes an exit code into the isa-debug-exit port.
///
/// For a value `e` written into the port, QEMU will exit with `(e << 1) | 1`.
fn qemu_exit(success: bool) {
let code = if success { 3 >> 1 } else { 0 };
unsafe {
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