Re: [RFC PATCH 0/2] irq destination caching prototype

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On Mon, Aug 13, 2012 at 12:16:46PM +0300, Gleb Natapov wrote:
> Here is a quick prototype of what we discussed yesterday. This one
> caches only MSI interrupts for now. The obvious problem is that not
> all interrupts (namely IPIs and MSIs using KVM_CAP_SIGNAL_MSI) use irq
> routing table, so they cannot be cached.

I thought this means ID changes need to replace the routing table, no?

> 
> Gleb Natapov (2):
>   Call irq_rt callback under rcu_read_lock()
>   Cache msi irq destination.
> 
>  arch/x86/kvm/lapic.c     |    2 +-
>  include/linux/kvm_host.h |    1 +
>  virt/kvm/ioapic.c        |    2 +-
>  virt/kvm/ioapic.h        |    3 ++-
>  virt/kvm/irq_comm.c      |   37 ++++++++++++++++++++-----------------
>  5 files changed, 25 insertions(+), 20 deletions(-)
> 
> -- 
> 1.7.10.4
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