Re: [Xen-devel] [PATCH] evtchn/fifo: map correct pages when guest is HVM

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 13/12/13 15:10, Konrad Rzeszutek Wilk wrote:
> On Fri, Dec 13, 2013 at 02:49:53PM +0000, David Vrabel wrote:
>> From: David Vrabel <david.vrabel@xxxxxxxxxx>
>>
>> If a HVM guest attempts to use the FIFO-based ABI it will not receive
>> any events and destroying the guest may crash Xen or trigger an assert
>> when attempting to unmap a control block page.  This occurs because
>> Xen maps the wrong page for both the control blocks and the event
>> arrays.
>>
>> In map_guest_page(), use the MFN of the guest's page and not the GFN
>> when calling map_domain_page_global().
>>
> 
> Should you have the Reported-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> flag?

Yes. I'm really bad at remembering these.

David

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