Gleb Natapov wrote: > On Mon, Oct 12, 2009 at 09:03:18AM +0200, Jan Kiszka wrote: >> Hi, >> >> I was starring at the IRQ delivery path of assigned devices for a while, >> wondering why we have a work queue there. Now, after looking at some >> prehistoric versions, I think the reason is that there once was a mutex >> involved while we now use RCU. Am I right that we could actually drop >> this indirection today? >> > ioapic/pic path still has mutex. If MSIX is used (like it should) we can > drop work queue. I see. Wouldn't it be feasible to convert the fast paths of [io]apic to spinlocks? Jan
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