linux-kernel - Re: [PATCH] mshv: Add support for a new parent partition configuration

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Message-ID: <aKSyzopAGQhM61B0@liuwe-devbox-ubuntu-v2.tail21d00.ts.net>
Date: Tue, 19 Aug 2025 17:22:22 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Easwar Hariharan <easwar.hariharan@...ux.microsoft.com>
Cc: Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
	linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, kys@...rosoft.com,
	haiyangz@...rosoft.com, wei.liu@...nel.org, mhklinux@...look.com,
	decui@...rosoft.com, arnd@...db.de
Subject: Re: [PATCH] mshv: Add support for a new parent partition
 configuration

On Tue, Aug 19, 2025 at 09:17:27AM -0700, Easwar Hariharan wrote:
> On 8/19/2025 12:29 AM, Nuno Das Neves wrote:
> > Detect booting as an "L1VH" partition. This is a new scenario very
> > similar to root partition where the mshv_root driver can be used to
> > create and manage guest partitions.
> > 
> > It mostly works the same as root partition, but there are some
> > differences in how various features are handled. hv_l1vh_partition()
> > is introduced to handle these cases. Add hv_parent_partition()
> > which returns true for either case, replacing some hv_root_partition()
> > checks.
> > 
> > Signed-off-by: Nuno Das Neves <nunodasneves@...ux.microsoft.com>
> 
> Seems the plurality of subject prefixes for drivers/hv files has been "Drivers: hv"
> so far, including the 2 commits for drivers/hv/mshv*. Are you planning to change
> the standard for mshv driver going forward?

IMO it is okay to have a different prefix to call out the commits that
are relevant to the mshv driver. This eases the burden for anyone
porting the changes to a different kernel tree. We may also touch many
different parts of the codebase (though not in this particular patch).

Wei