From: Stefan Hajnoczi <stefa...@gmail.com> Date: Thu, 22 Mar 2018 09:25:35 +0000
> On Fri, Mar 16, 2018 at 7:30 PM, David Miller <da...@davemloft.net> wrote: >> Although the top level ioctls are probably size and layout compatible, >> I do not think that the deeper ioctls can be called by compat binaries >> without some translations in order for them to work. > > I audited the vhost ioctl code when reviewing this patch and was > unable to find anything that would break for a 32-bit userspace > process. > > drivers/vhost/net.c does the same thing already, which doesn't prove > it's correct but makes me more confident I didn't miss something while > auditing the vhost ioctl code. > > Did you have a specific ioctl in mind? I walked over the vhost ioctl datastructures and they all appear like they should be compatible. So I guess it won't be a problem after all.
