IDT: Include missing case in comments for #CP
The #CP (vector 21) exception can also be generated due to a missing
ENDBRANCH instruction if indirect branch tracking is enabled. Include this
in the comments.
@@ -348,6 +348,7 @@ pub struct InterruptDescriptorTable {
/// - A RET (far) instruction encountered a return address mismatch.
/// - A RSTORSSP instruction encountered an invalid shadow stack restore token.
/// - A SETSSBY instruction encountered an invalid supervisor shadow stack token.
+ /// - A missing ENDBRANCH instruction if indirect branch tracking is enabled.
///
/// vector nr. 21
pub cp_protection_exception: Entry<HandlerFuncWithErrCode>,
