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SubjectRe: [PATCH v7 2/4] virtio_balloon: introduce migration primitives to balloon pages
On 08/14/2012 05:38 PM, Michael S. Tsirkin wrote:

> And even ignoring that, global pointer to a device
> is an ugly hack and ugly hacks tend to explode.
>
> And even ignoring estetics, and if we decide we are fine
> with a single balloon, it needs to fail gracefully not
> crash like it does now.

Fair enough. That certainly seems easy enough to fix.

Each balloon driver can have its own struct address_space,
and simply point mapping->host (or any of the others) at
a global balloon thing somewhere.

if (page->mapping && page->mapping->host == balloon_magic)




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