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From: Cornelia Huck <cohuck@redhat.com>
To: Halil Pasic <pasic@linux.ibm.com>
Cc: linux-s390@vger.kernel.org, markver@us.ibm.com,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Xie Yongji <xieyongji@bytedance.com>,
	qemu-devel@nongnu.org, linux-kernel@vger.kernel.org,
	Halil Pasic <pasic@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Raphael Norwitz <raphael.norwitz@nutanix.com>,
	stefanha@redhat.com, virtualization@lists.linux-foundation.org
Subject: Re: [RFC PATCH 1/1] virtio: write back features before verify
Date: Tue, 05 Oct 2021 17:25:32 +0200	[thread overview]
Message-ID: <87czoj1ok3.fsf@redhat.com> (raw)
In-Reply-To: <20211005135909.2b8ab021.pasic@linux.ibm.com>

On Tue, Oct 05 2021, Halil Pasic <pasic@linux.ibm.com> wrote:

> On Tue, 05 Oct 2021 13:13:31 +0200
> Cornelia Huck <cohuck@redhat.com> wrote:
>> Or am I misunderstanding what you're getting at?
>> 
>
> Probably. I'm talking about pre- "do transport specific legacy detection
> in the device instead of looking at VERSION_1" you are probably talking
> about the post-state. If we had this new behavior for all relevant
> hypervisors then we wouldn't need to do a thing in the guest. The current
> code would work like charm.

Yeah, I was thinking more about the desired state. We need to both fix
QEMU (and other VMMs or devices should check whether they are doing the
right thing) and add a workaround on the driver side to make it work
with existing QEMUs.



  reply	other threads:[~2021-10-05 15:38 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210930012049.3780865-1-pasic@linux.ibm.com>
     [not found] ` <87r1d64dl4.fsf@redhat.com>
     [not found]   ` <20210930130350.0cdc7c65.pasic@linux.ibm.com>
     [not found]     ` <87ilyi47wn.fsf@redhat.com>
     [not found]       ` <20211001162213.18d7375e.pasic@linux.ibm.com>
     [not found]         ` <87v92g3h9l.fsf@redhat.com>
     [not found]           ` <20211002082128-mutt-send-email-mst@kernel.org>
     [not found]             ` <20211004042323.730c6a5e.pasic@linux.ibm.com>
2021-10-04  9:07               ` [RFC PATCH 1/1] virtio: write back features before verify Michael S. Tsirkin
2021-10-05 10:06                 ` Cornelia Huck
2021-10-05 10:43                 ` Halil Pasic
2021-10-05 11:11                   ` Michael S. Tsirkin
2021-10-05 11:13                   ` Cornelia Huck
2021-10-05 11:20                     ` Michael S. Tsirkin
2021-10-05 11:59                     ` Halil Pasic
2021-10-05 15:25                       ` Cornelia Huck [this message]
     [not found] ` <20210930070444-mutt-send-email-mst@kernel.org>
     [not found]   ` <20211001092125.64fef348.pasic@linux.ibm.com>
     [not found]     ` <20211002055605-mutt-send-email-mst@kernel.org>
2021-10-04 12:19       ` Cornelia Huck
2021-10-04 13:11         ` Michael S. Tsirkin
2021-10-04 14:33           ` Cornelia Huck
2021-10-04 15:07             ` Michael S. Tsirkin
2021-10-04 15:50               ` Cornelia Huck
2021-10-04 19:17                 ` Michael S. Tsirkin
2021-10-06 10:13                   ` Cornelia Huck
2021-10-06 12:15                     ` Michael S. Tsirkin
2021-10-05  7:25           ` Halil Pasic
2021-10-05  7:53             ` Michael S. Tsirkin
2021-10-05 10:46               ` Halil Pasic
2021-10-05 11:11                 ` Michael S. Tsirkin

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