lkml.org 
[lkml]   [2016]   [Jan]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH v2 2/2] KVM: x86: Add lowest-priority support for vt-d posted-interrupts
Date


> -----Original Message-----
> From: Radim Krčmář [mailto:rkrcmar@redhat.com]
> Sent: Thursday, December 24, 2015 1:22 AM
> To: Wu, Feng <feng.wu@intel.com>
> Cc: pbonzini@redhat.com; kvm@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: Re: [PATCH v2 2/2] KVM: x86: Add lowest-priority support for vt-d
> posted-interrupts
>
> 2015-12-16 09:37+0800, Feng Wu:
> > Use vector-hashing to deliver lowest-priority interrupts for
> > VT-d posted-interrupts.
> >
> > Signed-off-by: Feng Wu <feng.wu@intel.com>
> > ---
> > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> > @@ -10702,8 +10702,16 @@ static int vmx_update_pi_irte(struct kvm
> *kvm, unsigned int host_irq,
> > */
> >
> > kvm_set_msi_irq(e, &irq);
> > - if (!kvm_intr_is_single_vcpu(kvm, &irq, &vcpu))
> > - continue;
> > +
> > + if (!kvm_intr_is_single_vcpu(kvm, &irq, &vcpu)) {
> > + if (!kvm_vector_hashing_enabled() ||
> > + irq.delivery_mode !=
> APIC_DM_LOWEST)
>
> Hm, wouldn't it actually be easier to extend kvm_intr_is_single_vcpu()
> with vector hashing? :)

Yes, it is a good idea, I will try that! Thanks a lot!

Thanks,
Feng


\
 
 \ /
  Last update: 2016-01-04 03:41    [W:0.138 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site