Messages in this thread | | | Date | Tue, 28 Oct 2014 12:42:34 +0000 | From | Andrew Cooper <> | Subject | Re: [Xen-devel] [PATCH 0/2] xen: Switch to virtual mapped linear p2m list |
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On 28/10/14 12:39, 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! > > David
How is the toolstack expected to find and mutate this p2m on migrate? The toolstack does not use guest pagetables.
~Andrew
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