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RE: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver lowest-priority interrupts

From "Wu, Feng" <feng.wu@intel.com>
Newsgroups linux.kernel
Subject RE: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver lowest-priority interrupts
Date 2016-01-19 05:50 +0100
Message-ID <qSwoV-2D4-1@gated-at.bofh.it> (permalink)
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> -----Original Message-----
> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> Sent: Monday, January 18, 2016 6:42 PM
> To: Wu, Feng <feng.wu@intel.com>; Radim Krcmár <rkrcmar@redhat.com>
> Cc: kvm@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver lowest-
> priority interrupts
> 
> 
> 
> On 18/01/2016 06:19, Wu, Feng wrote:
> > However,
> > this will make the vector-hashing lowest-priority handling slightly different
> > compare to round-robin, since RR checks "!dst[i]" before injecting the
> > interrupts. What is your opinion about it? Thanks a lot!
> 
> I think Radim's suggestion is fine.  You can print an error (just once
> per guest) to dmesg if the result of the hashing computation corresponds
> to a disabled APIC.

Good idea, is there already a convenient way to do this in KVM?

Thanks,
Feng

> 
> Paolo

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RE: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver  lowest-priority interrupts "Wu, Feng" <feng.wu@intel.com> - 2016-01-18 06:30 +0100
  Re: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver  lowest-priority interrupts Paolo Bonzini <pbonzini@redhat.com> - 2016-01-18 11:50 +0100
    RE: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver  lowest-priority interrupts "Wu, Feng" <feng.wu@intel.com> - 2016-01-19 05:50 +0100
      RE: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver  lowest-priority interrupts "Wu, Feng" <feng.wu@intel.com> - 2016-01-19 14:50 +0100
      Re: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver  lowest-priority interrupts Paolo Bonzini <pbonzini@redhat.com> - 2016-01-19 14:50 +0100
  Re: [PATCH v2 1/2] KVM: x86: Use vector-hashing to deliver  lowest-priority interrupts Radim Krcmár <rkrcmar@redhat.com> - 2016-01-18 15:10 +0100

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