Re: [Xen-devel] Reserved-memory node handling in XEN ( WAS Re: [ARM] Handling CMA pool device nodes in Dom0)

[Andrii Anisov <andrii_anisov@xxxxxxxx>]

Dear Julien,


On 27.07.17 12:55, Julien Grall wrote:
> It really depends on the security impact here. If the reserved memory 
> is shared with other device, what would be the impact of a domain 
> using the wrong memory attribute?
I'm sorry, I did not get the point.
Could you please provide an example of a security impact?

> Furthermore, using the weakest one would imply cache maintenance when 
> the region is assigned/deassigned to/from a domain to prevent leaking 
> data.
Could you please provide an example scenario for data leakage?

--

*Andrii Anisov*



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