RTEMS | bsps/i386: Refactor LAPIC code into shared apic.c module (!1121)

[Gedare Bloom (@gedare)]

Gedare Bloom started a new discussion on bsps/i386/shared/irq/apic.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1121#note_152421

 > +
 > +  /* Deassert INIT IPI */
 > +  send_ipi(
 > +    apicid,
 > +    LAPIC_ICR_TM_LEVEL | LAPIC_ICR_DM_INIT
 > +  );
 > +  UDELAY(10000);
 > +
 > +  /*
 > +   *  Send Startup IPIs.
 > +   */
 > +  int i;
 > +  for (i = 1; i <= 2; i++) {
 > +    send_ipi(apicid, LAPIC_ICR_DM_SIPI | page_vector);
 > +    wait_ipi();
 > +    UDELAY(1000);

why is a UDELAY needed after `wait_ipi`?

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1121#note_152421
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