All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jason Wang <jasowang@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>
Cc: qemu-devel@nongnu.org, peterx@redhat.com, wexu@redhat.com
Subject: Re: [Qemu-devel] [PATCH] virtio: unbreak virtio-pci with IOMMU after caching ring translations
Date: Fri, 3 Mar 2017 17:11:07 +0800	[thread overview]
Message-ID: <23851410-c304-8c77-79b5-a623175f0db3@redhat.com> (raw)
In-Reply-To: <10909aae-3d0c-71db-2f4c-a51c442d369b@redhat.com>



On 2017年03月02日 18:30, Paolo Bonzini wrote:
>
> On 02/03/2017 08:47, Jason Wang wrote:
>>>> Fixes: c611c76417f5 ("virtio: add MemoryListener to cache ring
>>>> translations")
>>>> Cc: Paolo Bonzini <pbonzini@redhat.com>
>>>> Signed-off-by: Jason Wang <jasowang@redhat.com>
>>> This is very ugly. I guess it's better than broken IOMMU ...
>>> Paolo?
>> Maybe we can delay the registering of memory listener on bus master
>> enabling or status setting.
> Can we add a callback to PCIDeviceClass, and invoke it from
> pci_init_bus_master?
>
> Paolo
>

This looks pci specific, I post a fix that reset the dma_as during 
status set which can solve this issue too. Please have a look.

Thanks

      reply	other threads:[~2017-03-03  9:11 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-01  4:10 [Qemu-devel] [PATCH] virtio: unbreak virtio-pci with IOMMU after caching ring translations Jason Wang
2017-03-02  5:10 ` Michael S. Tsirkin
2017-03-02  7:47   ` Jason Wang
2017-03-02 10:30     ` Paolo Bonzini
2017-03-03  9:11       ` Jason Wang [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=23851410-c304-8c77-79b5-a623175f0db3@redhat.com \
    --to=jasowang@redhat.com \
    --cc=mst@redhat.com \
    --cc=pbonzini@redhat.com \
    --cc=peterx@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=wexu@redhat.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.