Re: [PATCH 1/7] KVM: api: add kvm_irq_routing_extended_msi

From: Eric Auger
Date: Thu Jul 02 2015 - 10:51:18 EST


On 07/02/2015 10:41 AM, Pavel Fedin wrote:
> Hello!
>
>> What if we use KVM_MSI_VALID_DEVID flag instead of new KVM_IRQ_ROUTING_EXTENDED_MSI
>> definition? I
>> believe this would make an API more consistent and introduce less new definitions.
>
> I have just found one more flaw in your implementation. If you take a look at irqfd_wakeup()...
> --- cut ---
> /* An event has been signaled, inject an interrupt */
> if (irq.type == KVM_IRQ_ROUTING_MSI)
> kvm_set_msi(&irq, kvm, KVM_USERSPACE_IRQ_SOURCE_ID, 1,
> false);
> else
> schedule_work(&irqfd->inject);
> --- cut ---
> You apparently missed KVM_IRQ_ROUTING_EXTENDED_MSI here, as well as in irqfd_update(). But, if you
> accept my API proposal, this becomes irrelevant.

Hi Pavel,

thanks for spotting this bug. Whatever the user-api API choice I will
respin shortly fixing this plus the one reported by André.

Thanks for the review.

Best Regards

Eric


>
> Kind regards,
> Pavel Fedin
> Expert Engineer
> Samsung Electronics Research center Russia
>
>

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