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| author | David Gibson <david@gibson.dropbear.id.au> | 2012-09-12 16:57:21 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-10-04 15:54:18 +0200 |
| commit | 3fe719f467530b7c8ac0797881ff4b66d1357c18 (patch) | |
| tree | 63f071414d9bdfccebb3fab39418d498e865ef2b /hw/kvm/pci-assign.c | |
| parent | 53724ee565565f69560dbe17553bede8c0169379 (diff) | |
| download | focaccia-qemu-3fe719f467530b7c8ac0797881ff4b66d1357c18.tar.gz focaccia-qemu-3fe719f467530b7c8ac0797881ff4b66d1357c18.zip | |
pseries: Fix semantics of RTAS int-on, int-off and set-xive functions
Currently the ibm,int-on and ibm,int-off RTAS functions are implemented as no-ops. This is because when implemented as specified in PAPR they caused Linux (which calls both int-on/off and set-xive) to end up with interrupts masked when they should not be. Since Linux's set-xive calls make the int-on/off calls redundant, making them nops worked around the problem. In fact, the problem was caused because there was a subtle bug in set-xive, PAPR specifies that as well as updating the current priority, it also needs to update the saved priority used by int-on/off. With this bug fixed the problem goes away. This patch implements this more correct fix. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/kvm/pci-assign.c')
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