Re: MSI interrupts

uint32_t
xcas(volatile Spinlock *lk, uint32_t expected, uint32_t val)
{
uint32_t v = esmLOCKload(&lk->lock);
if (v == expected) esmLOCKstore(&lk->lock, val);
return v;
}

>
Yes, unless you want the alternate exit strategy, this works fine.

How does ESM know that the "event" is complete when the code doesn't go
through the final `esmLOCKstore`?


        Stefan