From: "Michael S. Tsirkin" <mst@redhat.com>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Usama Arif <usama.arif@bytedance.com>,
virtio-dev@lists.oasis-open.org, ndragazis@arrikto.com,
fam.zheng@bytedance.com, liangma@liangbit.com
Subject: [virtio-dev] Re: [PATCH v3 3/4] content: Introduce driver/device auxiliary notifications for MMIO
Date: Mon, 31 Oct 2022 11:45:55 -0400 [thread overview]
Message-ID: <20221031114132-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <Y1r3wEnQwTsZqGWg@fedora>
On Thu, Oct 27, 2022 at 05:27:28PM -0400, Stefan Hajnoczi wrote:
> On Fri, Oct 07, 2022 at 05:56:42PM +0100, Usama Arif wrote:
> > This includes the additions to the corresponding device and driver
> > conformances.
> >
> > Signed-off-by: Usama Arif <usama.arif@bytedance.com>
> > Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
>
> You can keep this. One thought:
>
> I realized that virtio-mmio support won't be very useful until
> virtio-mmio gets MSI-X support because drivers currently cannot
> differentiate between device auxiliary notifications.
>
> Stefan
The big issue with MSI is it actually needs a ton of registers
for interrupt rebalancing, masking etc and they need to be fast.
Maybe a status bit like pci has makes sense here.
--
MST
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next prev parent reply other threads:[~2022-10-31 15:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-07 16:56 [virtio-dev] [PATCH v3 0/4] Introduce aux. notifications and virtio-vhost-user Usama Arif
2022-10-07 16:56 ` [virtio-dev] [PATCH v3 1/4] content: Introduce driver/device auxiliary notifications Usama Arif
2022-10-11 9:20 ` Cornelia Huck
2022-10-11 16:58 ` Usama Arif
2022-10-27 20:05 ` [virtio-dev] " Stefan Hajnoczi
2022-10-28 10:05 ` [virtio-dev] Re: [External] " Usama Arif
2022-10-07 16:56 ` [virtio-dev] [PATCH v3 2/4] content: Introduce driver/device aux. notification cfg type for PCI Usama Arif
2022-10-27 21:22 ` [virtio-dev] " Stefan Hajnoczi
2022-10-07 16:56 ` [virtio-dev] [PATCH v3 3/4] content: Introduce driver/device auxiliary notifications for MMIO Usama Arif
2022-10-27 21:27 ` [virtio-dev] " Stefan Hajnoczi
2022-10-31 14:22 ` [virtio-dev] Re: [External] " Usama Arif
2022-10-31 15:47 ` Michael S. Tsirkin
2022-10-31 17:26 ` Stefan Hajnoczi
2022-10-31 15:45 ` Michael S. Tsirkin [this message]
2022-10-31 17:24 ` [virtio-dev] " Stefan Hajnoczi
2022-10-31 19:33 ` Michael S. Tsirkin
2022-10-07 16:56 ` [virtio-dev] [PATCH v3 4/4] vhost-user: add vhost-user device type Usama Arif
2022-10-27 19:54 ` [virtio-dev] Re: [PATCH v3 0/4] Introduce aux. notifications and virtio-vhost-user Stefan Hajnoczi
2022-10-28 16:36 ` Michael S. Tsirkin
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