linux-kernel - Re: [PATCH v2 03/23] xen/arm: page.h definitions

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Date:	Wed, 8 Aug 2012 17:33:09 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	Stefano Stabellini <Stefano.Stabellini@...citrix.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	"Tim (Xen.org)" <tim@....org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linaro-dev@...ts.linaro.org" <linaro-dev@...ts.linaro.org>,
	"catalin.marinas@....com" <catalin.marinas@....com>,
	"arnd@...db.de" <arnd@...db.de>
Subject: Re: [PATCH v2 03/23] xen/arm: page.h definitions

On Tue, 7 Aug 2012, Konrad Rzeszutek Wilk wrote:
> On Mon, Aug 06, 2012 at 03:27:06PM +0100, Stefano Stabellini wrote:
> > ARM Xen guests always use paging in hardware, like PV on HVM guests in
> > the X86 world.
> > 
> > Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
> 
> Ack.. with one nitpick
> 
> > +/* XXX: this shouldn't be here */
> 
> .. but its here b/c the frontend drivers are using it (its rolled in
> headers)- even though we won't hit the code path. So for right now
> just punt with this.

Yep, I'll do that.


> > +static inline pte_t *lookup_address(unsigned long address, unsigned int *level)
> > +{
> > +	BUG();
> > +	return NULL;
> > +}
> > +
> > +static inline int m2p_add_override(unsigned long mfn, struct page *page,
> > +		struct gnttab_map_grant_ref *kmap_op)
> > +{
> > +	return 0;
> > +}
> > +
> > +static inline int m2p_remove_override(struct page *page, bool clear_pte)
> > +{
> > +	return 0;
> > +}
> > +
> > +static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
> > +{
> > +	BUG();
> > +	return false;
> > +}
> > +#endif /* _ASM_ARM_XEN_PAGE_H */
> > -- 
> > 1.7.2.5
> 
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