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authorDavid Gibson <david@gibson.dropbear.id.au>2016-01-21 14:48:43 +1100
committerDavid Gibson <david@gibson.dropbear.id.au>2016-01-30 23:37:38 +1100
commitecbc25fa86ce44cf5aea94adaf79ea8428f12f4b (patch)
tree4c248af1b43be98aa37e5e81fa85956f354efea7 /hw/misc
parent1438eff302cbc6c85d477fd7181b8a9aeea2efd7 (diff)
downloadfocaccia-qemu-ecbc25fa86ce44cf5aea94adaf79ea8428f12f4b.tar.gz
focaccia-qemu-ecbc25fa86ce44cf5aea94adaf79ea8428f12f4b.zip
pseries: Allow TCG h_enter to work with hotplugged memory
The implementation of the H_ENTER hypercall for PAPR guests needs to
enforce correct access attributes on the inserted HPTE.  This means
determining if the HPTE's real address is a regular RAM address (which
requires attributes for coherent access) or an IO address (which requires
attributes for cache-inhibited access).

At the moment this check is implemented with (raddr < machine->ram_size),
but that only handles addresses in the base RAM area, not any hotplugged
RAM.

This patch corrects the problem with a new helper.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
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