linux-kernel - Re: [PATCH] pci-hyperv: Add check for hyperv_initialized in init_hv_pci

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Message-ID: <20210618132236.lhbszxfgqnv2p4hq@liuwe-devbox-debian-v2>
Date:   Fri, 18 Jun 2021 13:22:36 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Wei Liu <wei.liu@...nel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>, bhelgaas@...gle.com,
        lorenzo.pieralisi@....com, linux-hyperv@...r.kernel.org,
        linux-pci@...r.kernel.org, kys@...rosoft.com, olaf@...fle.de,
        vkuznets@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pci-hyperv: Add check for hyperv_initialized in
 init_hv_pci_drv()

On Sat, Jun 05, 2021 at 10:40:21AM +0000, Wei Liu wrote:
> On Fri, Jun 04, 2021 at 04:26:22PM -0500, Bjorn Helgaas wrote:
> > On Wed, Jun 02, 2021 at 10:32:06AM +0000, Wei Liu wrote:
> > > On Tue, May 25, 2021 at 04:17:33PM -0700, Haiyang Zhang wrote:
> > > > Add check for hv_is_hyperv_initialized() at the top of init_hv_pci_drv(),
> > > > so if the pci-hyperv driver is force-loaded on non Hyper-V platforms, the
> > > > init_hv_pci_drv() will exit immediately, without any side effects, like
> > > > assignments to hvpci_block_ops, etc.
> > > > 
> > > > Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> > > > Reported-and-tested-by: Mohammad Alqayeem <mohammad.alqyeem@...anix.com>
> > > 
> > > Hello PCI subsystem maintainers, are you going to take this patch or
> > > shall I?
> > 
> > This was mistakenly assigned to me, so I reassigned it back to
> > Lorenzo.
> > 
> > If you *do* take this, please at least update it to follow the PCI
> > commit log conventions, e.g.,
> > 
> >   PCI: hv: Add check ...
> > 
> > and wrap the text so it fits in 75 columns.
> 
> Lorenzo already picked up two Hyper-V PCI patches from Long Li. I think
> leaving this to him is better.
> 

This patch is still missing from pci/hv, so I've picked it up via
hyperv-next (with the adjustments required by Bjorn).

Wei.