linux-kernel - Re: [RFC PATCH 8/8] svm: Allow AVIC with in-kernel irqchip mode

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Message-ID: <d57a0843-061a-231a-9d50-d7e4d4d05d73@amd.com>
Date:   Wed, 6 Feb 2019 11:20:59 +0000
From:   "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@....com>
To:     Alex Williamson <alex.williamson@...hat.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
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Subject: Re: [RFC PATCH 8/8] svm: Allow AVIC with in-kernel irqchip mode

Alex,

On 2/6/19 1:34 AM, Alex Williamson wrote:
> On Mon, 4 Feb 2019 14:42:32 +0000
> "Suthikulpanit, Suravee"<Suravee.Suthikulpanit@....com>  wrote:
> 
>> Once the IRQ ack notifier for in-kernel PIT is no longer required
>> and run-time AVIC activate/deactivate is supported, we can remove
>> the kernel irqchip split mode requirement for AVIC.
>>
>> Hence, remove the check for irqchip split mode when enabling AVIC.
> Yay!  Could we also at this point make avic enabled by default or are
> there remaining incompatibilities?  Thanks,

I'm looking into that next. I would need to ensure that enabling
AVIC would not cause issues with other features.

Suravee