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Re: [Xen-devel] [PATCH 0/2] xen: Switch to virtual mapped linear p2m list

On 10/28/2014 01:39 PM, David Vrabel wrote:
On 28/10/14 12:07, Juergen Gross wrote:

Okay, back to the original question: is the (up to) 64 MB virtual
mapping of the p2m list on 32-bit pv domains a problem or not?

I think up-to 64 MiB of vmalloc area is fine.  The vmalloc space can be
increased with a command line option in the unlikely event that there
are domUs that would be affected.


If yes, the virtual mapped linear p2m list could still be used on
64 bit domains, paving the way for support of more than 512 GB of
domain memory. OTOH having to keep the p2m tree coding alive isn't
my favorite solution...

Having to keep both the tree and linear p2m code would be awful.  Let's
not do this!

Agreed. :-)


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