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From: Alex Williamson <alex.williamson@redhat.com>
To: "Zhang, Tina" <tina.zhang@intel.com>
Cc: "intel-gvt-dev@lists.freedesktop.org" 
	<intel-gvt-dev@lists.freedesktop.org>,
	"kraxel@redhat.com" <kraxel@redhat.com>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Yuan, Hang" <hang.yuan@intel.com>,
	"Lv, Zhiyuan" <zhiyuan.lv@intel.com>
Subject: Re: [PATCH v5 2/6] vfio: Introduce vGPU display irq type
Date: Tue, 20 Aug 2019 09:32:40 -0600
Message-ID: <20190820093240.2bc1c9ba@x1.home> (raw)
In-Reply-To: <237F54289DF84E4997F34151298ABEBC876F9AD3@SHSMSX101.ccr.corp.intel.com>

On Tue, 20 Aug 2019 02:12:10 +0000
"Zhang, Tina" <tina.zhang@intel.com> wrote:

> BTW, IIRC, we might also have one question waiting to be replied:
> - Can we just use VFIO_IRQ_TYPE_GFX w/o proposing a new sub type
> (i.e. VFIO_IRQ_SUBTYPE_GFX_DISPLAY_IRQ)? Well, only if we can agree
> on that we don't have any other GFX IRQ requirements in future.
> Otherwise, we might need a sub type to differentiate them.

I think you've answered your own question ;)  We already have the
infrastructure for defining type/sub-type and it allows us to
categorize and group interrupt types together consistent with how we do
for regions, so what's the overhead in this approach?  Otherwise we
tend to have an ad-hoc list.  We can't say with absolute certainty that
we won't have additional GFX related IRQs.  Thanks,

Alex

  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-16  2:35 [PATCH v5 0/6] Deliver vGPU display refresh event to userspace Tina Zhang
2019-08-16  2:35 ` [PATCH v5 1/6] vfio: Define device specific irq type capability Tina Zhang
2019-08-16 20:51   ` Alex Williamson
2019-08-20  0:56     ` Zhang, Tina
2019-08-16  2:35 ` [PATCH v5 2/6] vfio: Introduce vGPU display irq type Tina Zhang
2019-08-16 20:51   ` Alex Williamson
2019-08-20  2:12     ` Zhang, Tina
2019-08-20  7:20       ` kraxel
2019-08-20 15:03         ` Alex Williamson
2019-08-20 15:32       ` Alex Williamson [this message]
2019-08-16  2:35 ` [PATCH v5 3/6] drm/i915/gvt: Register vGPU display event irq Tina Zhang
2019-08-16  2:35 ` [PATCH v5 4/6] drm/i915/gvt: Deliver vGPU refresh event to userspace Tina Zhang
2019-08-26  7:55   ` Zhenyu Wang
2019-08-28  1:49     ` Tian, Kevin
2019-08-28  6:59       ` Zhang, Tina
2019-08-28  7:10         ` Tian, Kevin
2019-08-28  7:39           ` Zhang, Tina
2019-08-16  2:35 ` [PATCH v5 5/6] drm/i915/gvt: Deliver async primary plane page flip events at vblank Tina Zhang
2019-08-16  2:35 ` [PATCH v5 6/6] drm/i915/gvt: Add cursor plane reg update trap emulation handler Tina Zhang
2019-09-03  1:26 ` [PATCH v5 0/6] Deliver vGPU display refresh event to userspace Zhang, Tina
2019-09-03  7:43   ` Tian, Kevin
2019-09-05  7:48   ` kraxel
2019-09-17  9:27     ` Zhang, Tina

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