tree cf0760e5efe03913afa52375b037f50734907124
parent 4d4f577e4b5ee1299096438bbcf743bbe14f33ab
author Gavin Shan <gwshan@linux.vnet.ibm.com> 1412044741 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1412061314 +1000

powerpc/eeh: Unfreeze PE on enabling EEH functionality

When passing through PE to guest, that's possibly in frozen
state. The driver for the pass-through devices on guest side
can't be loaded successfully as reported. We already had one
gate in eeh_dev_open() to clear PE frozen state accordingly,
but that's not enough because the function is only called at
QEMU startup for once.

The patch adds another gate in eeh_pe_set_option() so that the
PE frozen state can be cleared at QEMU restart time.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>