[Bug 1515145] Re: xm migrate --live panics hypervisor

Wed Mar 30 15:24:53 UTC 2016

debian/patches/xsa97-hap-4.1-prereq.patch is the combination of
 * commit 301493fb027648db6808b66d1ccf849f524b8422
   x86/mm: dedup the various copies of the shadow lock functions
 * commit eca988de7381e5efe58792dc166611e4523d33b3
   x86/mm: merge the shadow, hap and log-dirty locks into a single paging lock.

but it's missing 
 * commit 5bf494a7bf3674f32ebaab1b70b76e5f174812a3
   x86/mm: Make MM locks recursive.

which leads to a recursive locking call to crash the hypervisor.

With the patch applied "xm migrate -c -l $dom $host" works again.

** Patch added: "x86/mm: Make MM locks recursive."
   https://bugs.launchpad.net/ubuntu/+source/xen/+bug/1515145/+attachment/4617139/+files/0001-x86-mm-Make-MM-locks-recursive.patch

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https://bugs.launchpad.net/bugs/1515145

Title:
  xm migrate --live panics hypervisor

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