linux-kernel - Re: [Xen-devel] [RFC 13/23] xen/xenbus: Use Xen page definition

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Message-ID: <555B465B.9070502@citrix.com>
Date:	Tue, 19 May 2015 15:19:07 +0100
From:	Julien Grall <julien.grall@...rix.com>
To:	David Vrabel <david.vrabel@...rix.com>,
	Julien Grall <julien.grall@...rix.com>,
	<xen-devel@...ts.xenproject.org>
CC:	<ian.campbell@...rix.com>, <stefano.stabellini@...citrix.com>,
	<tim@....org>, <linux-kernel@...r.kernel.org>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [Xen-devel] [RFC 13/23] xen/xenbus: Use Xen page definition

Hi David,

On 19/05/15 14:59, David Vrabel wrote:
> On 14/05/15 18:00, Julien Grall wrote:
>> The xenstore ring is always based on the page granularity of Xen.
> [...]
>> --- a/drivers/xen/xenbus/xenbus_probe.c
>> +++ b/drivers/xen/xenbus/xenbus_probe.c
>> @@ -713,7 +713,7 @@ static int __init xenstored_local_init(void)
>>  
>>  	xen_store_mfn = xen_start_info->store_mfn =
>>  		pfn_to_mfn(virt_to_phys((void *)page) >>
>> -			   PAGE_SHIFT);
>> +			   XEN_PAGE_SHIFT);
> 
> This is page_to_mfn() that you adjusted in the previous patch.

Right, I think there is a couple of other places where page_to_mfn can
be used.

Regards,

-- 
Julien Grall
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