* KY Srinivasan <k...@microsoft.com> wrote:
>
>
> > -----Original Message-----
> > From: Dan Carpenter [mailto:dan.carpen...@oracle.com]
> > Sent: Saturday, September 9, 2017 4:04 AM
> > To: KY Srinivasan <k...@microsoft.com>
> > Cc: x...@kernel.org; gre...@linuxfoundation.org; linux-
> > ker...@vger.kernel.org; de...@linuxdriverproject.org; o...@aepfle.de;
> > a...@canonical.com; jasow...@redhat.com; t...@linutronix.de;
> > h...@zytor.com; mi...@kernel.org
> > Subject: Re: [PATCH 1/1] x86/hyper-V: Allocate the IDT entry early in boot
> >
> > On Fri, Sep 08, 2017 at 04:15:57PM -0700, k...@exchange.microsoft.com
> > wrote:
> > > From: "K. Y. Srinivasan" <k...@microsoft.com>
> > >
> > > Allocate the hypervisor callback IDT entry early in the boot sequence.
> > >
> >
> > I'm guessing this fixes a NULL dereference or something? The changelog
> > doesn't really say why we are doing this.
>
> The changelog does say what we are doing - allocating the IDT entry early in
> the boot sequence.
But the question was the 'why', not the 'what' - so Dan's question is
fully justified ...
> The current code would allocate the entry as part of registering the handler
> when vmbus driver loaded and this caused a problem for the cleanup Thomas had
> implemented.
I've put this explanation into the changelog.
Thanks,
Ingo
