linux-kernel - Re: [PATCH v12 08/18] xen/pvh: Load GDT/GS in early PV bootup code for BSP.

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Message-ID: <20140102182413.GB3021@pegasus.dumpdata.com>
Date:	Thu, 2 Jan 2014 13:24:14 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	David Vrabel <david.vrabel@...rix.com>
Cc:	linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org,
	boris.ostrovsky@...cle.com, stefano.stabellini@...citrix.com,
	mukesh.rathor@...cle.com
Subject: Re: [PATCH v12 08/18] xen/pvh: Load GDT/GS in early PV bootup code
 for BSP.

> > +		loadsegment(es, 0);
> > +		loadsegment(ds, 0);
> > +		loadsegment(fs, 0);
> > +#else
> > +		/* PVH: TODO Implement. */
> > +		BUG();
> > +#endif
> > +		return;    <==============
> > +	}
> >  	pv_cpu_ops.write_gdt_entry = xen_write_gdt_entry_boot;
> >  	pv_cpu_ops.load_gdt = xen_load_gdt_boot;
> 
> If PVH uses native GDT why are these (and possibly other?) GDT ops needed?

They aren't. There is a 'return' there. I marked it for you with
'<======'.


> 
> David
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