Should I turn off interrupt?
How many situation I should concern?
Is there any documents for this?
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Should I turn off interrupt?
How many situation I should concern?
Is there any documents for this?
If you have to change
(E)SPtogether withSS(and usually you have to), then if interrupts are enabled, it must be done using either a singleLSS (E)SP, ...instruction or two instructionsMOV SS, ...+MOV (E)SP, ...(in exactly this order). If you first change(E)SPand thenSS, or if you first changeSS, then execute some other instructions and only then change(E)SP, you must do all that with disabled interrupts (e.g. withCLI) because otherwise you’ll have a window within which the pairSS:(E)SPwill be incorrect/inconsistent and any interrupt that occurs at that time will likely corrupt memory.You can read about all this in intel and AMD CPU manuals.