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x86/mm: Fix p2m teardown locking
authorAndres Lagar-Cavilla <andres@lagarcavilla.org>
Thu, 26 Jan 2012 13:21:27 +0000 (13:21 +0000)
committerAndres Lagar-Cavilla <andres@lagarcavilla.org>
Thu, 26 Jan 2012 13:21:27 +0000 (13:21 +0000)
commitad6c917d7da2cc1dbcb6c8aa19ee0f9866d76f4e
tree3ddc0c226b940210b884019543ff0cb7534d01aetree | snapshot
parentdaf20794eda5d4b03d6cd6c7f59bd92d641af64dcommit | diff
x86/mm: Fix p2m teardown locking

Holding the p2m lock during a p2m teardown, while unsharing entries pointing to
shared frames, causes a locking inversion and deadlock panic.

Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
xen/arch/x86/mm/p2m.c diff | blob | history
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