Re: [PATCH] kvm: fast-path msi injection with irqfd

[Avi Kivity]

On 11/18/2010 07:09 PM, Michael S. Tsirkin wrote:
> Store irq routing table pointer in the irqfd object,
> and use that to inject MSI directly without bouncing out to
> a kernel thread.
>
> While we touch this structure, rearrange irqfd fields to make fastpath
> better packed for better cache utilization.
>
> This also adds some comments about locking rules and rcu usage in code.
>
> Some notes on the design:
> - Use pointer into the rt instead of copying an entry,
>    to make it possible to use rcu, thus side-stepping
>    locking complexities.  We also save some memory this way.
> - Old workqueue code is still used for level irqs.
>    I don't think we DTRT with level anyway, however,
>    it seems easier to keep the code around as
>    it has been thought through and debugged, and fix level later than
>    rip out and re-instate it later.

Applied, thanks.

--
error compiling committee.c: too many arguments to function

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