Re: [PATCH] x86/hyperv/vtl: Add noop for realmode pointers

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

On Mon, May 01, 2023 at 04:57:56PM +0000, Michael Kelley (LINUX) wrote:
> From: Saurabh Sengar <ssengar@linux.microsoft.com> Sent: Monday, April 24, 2023 3:10 AM
> > 
> > Assign the realmode pointers to noop, instead of NULL to fix kernel panic.
> > 
> > Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
> > ---
> >  arch/x86/hyperv/hv_vtl.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/arch/x86/hyperv/hv_vtl.c b/arch/x86/hyperv/hv_vtl.c
> > index 1ba5d3b99b16..85d38b9f3586 100644
> > --- a/arch/x86/hyperv/hv_vtl.c
> > +++ b/arch/x86/hyperv/hv_vtl.c
> > @@ -20,6 +20,8 @@ void __init hv_vtl_init_platform(void)
> >  {
> >  	pr_info("Linux runs in Hyper-V Virtual Trust Level\n");
> > 
> > +	x86_platform.realmode_reserve = x86_init_noop;
> > +	x86_platform.realmode_init = x86_init_noop;
> >  	x86_init.irqs.pre_vector_init = x86_init_noop;
> >  	x86_init.timers.timer_init = x86_init_noop;
> > 
> > --
> > 2.34.1
> 
> Reviewed-by: Michael Kelley <mikelley@microsoft.com>
> 

Applied to hyperv-fixes. Thanks.