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Re: [Xen-devel] [PATCH v11 02/14] arch/arm: unmap partially-mapped memory regions

On 28/08/14 05:19, Arianna Avanzini wrote:
On Wed, Aug 27, 2014 at 12:35:54PM -0400, Julien Grall wrote:
Hi Arianna,


Hi Arianna,

Thank you for the correction and for pointing that corner case out. Since I
have to send a new version perhaps I'll try to handle also the case you
mentioned. Just to see if I understood things correctly: the correct behavior
would be to leave the mapping already existing at the end of the range as it

The main point is too unmap only what you have mapped during the call of apply_p2m_changes.

Otherwise you may get spurious warning message on Xen console and/or remove mapping that you haven't mapped.

But, for the latter case the mapping would have been override if the call was succeeded.


Julien Grall

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