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| author |   Anton Blanchard <anton@samba.org> | 2015-12-10 20:44:39 +1100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2015-12-10 21:10:55 +1100 |
| commit | 20dbe67062062c2a790832f0d30e73dba45df7c4 (patch) | |
| tree | 6b51f1222d8872a29700e445ee003fd322da9891 /tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c | |
| parent | powerpc: Call check_if_tm_restore_required() in enable_kernel_*() (diff) | |
| download | linux-dev-20dbe67062062c2a790832f0d30e73dba45df7c4.tar.xz linux-dev-20dbe67062062c2a790832f0d30e73dba45df7c4.zip | |
powerpc: Call restore_sprs() before _switch()
commit 152d523e6307 ("powerpc: Create context switch helpers save_sprs()
and restore_sprs()") moved the restore of SPRs after the call to _switch().
There is an issue with this approach - new tasks do not return through
_switch(), they are set up by copy_thread() to directly return through
ret_from_fork() or ret_from_kernel_thread(). This means restore_sprs() is
not getting called for new tasks.
Fix this by moving restore_sprs() before _switch().
Fixes: 152d523e6307 ("powerpc: Create context switch helpers save_sprs() and restore_sprs()")
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools/testing/selftests/powerpc/dscr/dscr_inherit_exec_test.c')
0 files changed, 0 insertions, 0 deletions