linux-kernel - Re: [PATCH v2 0/6] KVM: x86: cleanup and speedup for APICv

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Message-ID: <ebb76f1c-055e-504f-5a4d-35f2ed93e6d0@redhat.com>
Date:   Tue, 7 Feb 2017 18:23:04 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v2 0/6] KVM: x86: cleanup and speedup for APICv



On 19/12/2016 17:17, Paolo Bonzini wrote:
> These are the fixed patches that now pass vmx.flat.  The issue in
> "KVM: x86: do not scan IRR twice on APICv vmentry" was that,
> in v1 of the patches, kvm_cpu_get_interrupt did not scan IRR
> at all if it found PIR.ON=0.  This is now fixed in patches 4 and 5.
> 
> Another latent bug has to be fixed in patch 2.  The patch also
> highlights the maze that check_nested_events has become.  Fixing
> that is left for later.
> 
> The patches are on top of the (non-APICv-related) KVM_REQ_EVENT
> patches from this morning.  According to kvm-unit-tests, patch 6 speeds
> up self-IPIs (if not done through the accelerated self-IPI MSR) by 5-10%.
> 
> Paolo

Ping?

Paolo