Re: [Xen-devel] IOREQ server on Arm

[Julien Grall <julien.grall@xxxxxxx>]

Hi Paul,

Thank you for your help understanding the resource code.

On 09/27/2018 11:46 AM, Paul Durrant wrote:
> If the DM domain is not PV then currently it must be the hardware domain to be 
> able to map resources. Hence we trust it not to descrease_reservation IOREQ 
> pages.
Can you point me to check in the code? The only check I found is:

!(xmar.flags & XENMEM_rsrc_acq_caller_owned) && !is_hardware_domain(d)

But this is still allowing to map some of the resources in a DM domain.

Cheers,

--
Julien Grall

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