Re: [PATCH] Drivers: hv: ioctl for self targeted passthrough hvcalls

[Wei Liu <wei.liu@kernel.org>]

On Sat, Nov 15, 2025 at 01:09:12PM +0530, Anirudh Rayabharam wrote:
> On Sat, Nov 15, 2025 at 06:22:40AM +0000, Wei Liu wrote:
> > On Fri, Nov 14, 2025 at 09:58:52AM +0000, Anirudh Rayabharam wrote:
> > > From: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com>
> > > 
> > > Allow MSHV_ROOT_HVCALL IOCTL on the /dev/mshv fd. This IOCTL would
> > > execute a passthrough hypercall targeting the root/parent partition
> > > i.e. HV_PARTITION_ID_SELF.
> > > 
> > > This will be useful for the VMM to query things like supported
> > > synthetic processor features, supported VMM capabiliites etc.
> > > 
> > > While at it, add HVCALL_GET_PARTITION_PROPERTY_EX to the allowed list of
> > > passthrough hypercalls.
> > > 
> > > Signed-off-by: Anirudh Rayabharam (Microsoft) <anirudh@anirudhrb.com>
> > 
> > This doesn't apply to hyperv-next. What's its base?
> 
> Hmmm... I remember doing this on hyperv-next. This the parent I see:
> 
> commit f2329fd987a0da4759c307c46fd27c4d05bb7433
> Author: Naman Jain <namjain@linux.microsoft.com>
> Date:   Thu Nov 13 04:41:49 2025 +0000
> 
>     Drivers: hv: Introduce mshv_vtl driver
> 
> No worries, I can rebase it on hyperv-next and send it again.

I pulled in some patches from hyperv-fixes to hyperv-next. That's
probably why. But you will see that eventually during a merge later
anyway, so it is good to just rebase and resend.

Wei

> 
> Thanks,
> Anirudh.
>