diff options
| author | Anton Blanchard <anton@samba.org> | 2012-09-03 16:49:47 +0000 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-09-19 15:04:41 +0100 |
| commit | ea1862390d3fa57b1b0eca2c445f25a98e02fc7d (patch) | |
| tree | c4f876dc890c4eded6a4f6a9143b8167799bb295 /arch/powerpc/kernel/udbg_16550.c | |
| parent | 5f31a641ff0e76081cf4ae1f72799cd59c20baea (diff) | |
powerpc: Fix DSCR inheritance in copy_thread()
commit 1021cb268b3025573c4811f1dee4a11260c4507b upstream.
If the default DSCR is non zero we set thread.dscr_inherit in
copy_thread() meaning the new thread and all its children will ignore
future updates to the default DSCR. This is not intended and is
a change in behaviour that a number of our users have hit.
We just need to inherit thread.dscr and thread.dscr_inherit from
the parent which ends up being much simpler.
This was found with the following test case:
http://ozlabs.org/~anton/junkcode/dscr_default_test.c
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch/powerpc/kernel/udbg_16550.c')
0 files changed, 0 insertions, 0 deletions