linux-kernel - Re: IOTLB support for vhost/vsock breaks crosvm on Android

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Message-ID: <20220817130510-mutt-send-email-mst@kernel.org>
Date:   Wed, 17 Aug 2022 13:05:49 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Will Deacon <will@...nel.org>
Cc:     stefanha@...hat.com, jasowang@...hat.com,
        torvalds@...ux-foundation.org, ascull@...gle.com, maz@...nel.org,
        keirf@...gle.com, jiyong@...gle.com, kernel-team@...roid.com,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        crosvm-dev@...omium.org
Subject: Re: IOTLB support for vhost/vsock breaks crosvm on Android

On Wed, Aug 17, 2022 at 02:48:22PM +0100, Will Deacon wrote:
> On Mon, Aug 08, 2022 at 08:45:48AM -0400, Michael S. Tsirkin wrote:
> > > > Also yes, I think it's a good idea to change crosvm anyway.  While the
> > > > work around I describe might make sense upstream I don't think it's a
> > > > reasonable thing to do in stable kernels.
> > > > I think I'll prepare a patch documenting the legal vhost features
> > > > as a 1st step even though crosvm is rust so it's not importing
> > > > the header directly, right?
> > > 
> > > Documentation is a good idea regardless, so thanks for that. Even though
> > > crosvm has its own bindings for the vhost ioctl()s, the documentation
> > > can be reference or duplicated once it's available in the kernel headers.
> > > 
> > So for crosvm change, I will post the documentation change and
> > you guys can discuss?
> 
> FYI, the crosvm patch is merged here:
> 
> https://github.com/google/crosvm/commit/4e7d00be2e135b0a2d964320ea4276e5d896f426
> 
> Will

Great thanks a lot!
I'm on vacation next week but will work on it afterwards.

-- 
MST