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

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Date:	Tue, 7 Aug 2012 14:13:22 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	linux-kernel@...r.kernel.org, xen-devel@...ts.xensource.com,
	Ian.Campbell@...rix.com, tim@....org,
	linux-arm-kernel@...ts.infradead.org, linaro-dev@...ts.linaro.org,
	catalin.marinas@....com, arnd@...db.de
Subject: Re: [PATCH v2 03/23] xen/arm: page.h definitions

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.

> +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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