Re: Need help in understanding x86 syscall

[Bodo Eggert]

Ukil a <ukil_a@xxxxxxxxx> wrote:

> Now I had the doubt that if the the syscall
> implementation is very large will the scheduling and
> other interrupts be blocked for the whole time till
> the process returns from the ISR (because in an ISR by
> default the interrupts are disabled unless ?sti? is
> called explicitly)?

According to my documentation it isn't. A software interrupt is a far call
with an extra pushf, and a hardware interrupt is protected against recursion
by the PIC, not by an interrupt flag.
-- 
Ich danke GMX dafür, die Verwendung meiner Adressen mittels per SPF
verbreiteten Lügen zu sabotieren.
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