tree 90e6553e23ebd4c23b3e39a90d9cb70bc691e7aa
parent 5fe8e8b88e68e517637e3f8287f1fee89e2d9252
author Hugh Dickins <hugh@veritas.com> 1162320039 +0000
committer Paul Mackerras <paulus@samba.org> 1162353168 +1100

[POWERPC] Make high hugepage areas preempt safe

Checking source for other get_paca()->field preemption dangers found that
open_high_hpage_areas does a structure copy into its paca while preemption
is enabled: unsafe however gcc accomplishes it.  Just remove that copy:
it's done safely afterwards by on_each_cpu, as in open_low_hpage_areas.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>