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| author | Alexander Graf <agraf@suse.de> | 2011-12-09 14:44:13 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-05 14:52:30 +0200 |
| commit | 468a12c2b53776721ff83517d4a195b85c5fce54 (patch) | |
| tree | ba417210997c2e3119525641764303d97db32815 /ipc | |
| parent | d33ad328c0025c45f4688a769aeebddc342222c1 (diff) | |
| download | linux-468a12c2b53776721ff83517d4a195b85c5fce54.tar.bz2 | |
KVM: PPC: Use get/set for to_svcpu to help preemption
When running the 64-bit Book3s PR code without CONFIG_PREEMPT_NONE, we were
doing a few things wrong, most notably access to PACA fields without making
sure that the pointers stay stable accross the access (preempt_disable()).
This patch moves to_svcpu towards a get/put model which allows us to disable
preemption while accessing the shadow vcpu fields in the PACA. That way we
can run preemptible and everyone's happy!
Reported-by: Jörg Sommer <joerg@alea.gnuu.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions