Re: [Xen-devel] [PATCH 12/13] xen: if p2m list located in to be remapped region delay remapping

From: David Vrabel
Date: Thu Feb 19 2015 - 12:45:08 EST

On 18/02/2015 06:52, Juergen Gross wrote:
With adapting the memory layout of dom0 to that of the host care must
be taken not to remap the initial p2m list supported by the hypervisor.

"...supplied by the hypervisor" ?

If the p2m map is detected to be in a region which is going to be
remapped, delay the remapping of that area. Not doing so can either
crash the system very early, or lead to clobbered data as the target
memory area of the remap operation will no longer be reserved.

Would it be better to relocate the p2m before remapping memory? If not, explain why in the commit message.

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