Interrupt gate in x86

[Fered]

Nobody can help me?!

Fered wrote:
> Hi;
> 
> In the following file:
> c/src/lib/libbsp/i386/shared/irq/idt.c
> in the following function:
> create_interrupt_gate_descriptor ()
> interrupt descriptor type, set to 0xe. It mean "Interrupt Gate" has been
> used. Interrupt gate clears IF flag then prevents nested interrupts. But I
> think nested interrupt handling implemented in RTEMS, according to usage of
> "_ISR_Nest_level" variable.
> Can anyone tell me how nesting implemented in interrupt handler of RTEMS?
> 
> Thanks.
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