Re: [PATCH v8 4/5] x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable

[Juergen Gross]

On 17.07.19 19:22, Joe Perches wrote:
> On Wed, 2019-07-17 at 08:49 +0200, Juergen Gross wrote:
> > On 17.07.19 08:46, Joe Perches wrote:
> > > On Tue, 2019-07-16 at 12:26 +0800, Zhenzhong Duan wrote:
> > > > .. as "nopv" support needs it to be changeable at boot up stage.
> > > >
> > > > Checkpatch reports warning, so move variable declarations from
> > > > hypervisor.c to hypervisor.h
> > > []
> > > > diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
> > > []
> > > > @@ -259,7 +259,7 @@ static __init void xen_hvm_guest_late_init(void)
> > > >    #endif
> > > >    }
> > > >    
> > > > -const __initconst struct hypervisor_x86 x86_hyper_xen_hvm = {
> > > > +struct hypervisor_x86 x86_hyper_xen_hvm __initdata = {
> > >
> > > static?
> >
> > It is being referenced from arch/x86/kernel/cpu/hypervisor.c
>
> But wasn't it also removed from the list of externs?
>
> Rereading the .h file, no it wasn't.  I missed that.
>
> Perhaps the extern list could be reordered to move this
> x86_hyper_xen_hvm to be next to x86_hyper_type.
>
> I also suggest that "extern bool nopv" might be a bit
> non-specific and could use a longer identifier.

You are a little bit late. It has been this way since V5 of the series
posted on July 3rd.

I have pushed the series to my tree already and I'm about to send the
pull request.

Followup patches welcome. :-)


Juergen