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(parent: 49102e9) | patch
xtensa: fix threadptr reload on return to userspace
authorMax Filippov <jcmvbkbc@gmail.com>
Sat, 4 Jul 2015 12:27:39 +0000 (15:27 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 21 Sep 2015 17:05:41 +0000 (10:05 -0700)
commit36c2895c6b132f8ff19074f6d226bcedf2614e89
treead99d9c28ec8122f7b3fd65ccbea46e07dbf2ee1tree | snapshot
parent49102e956fec3806fb0c7fb7b68b0900feab8ececommit | diff
xtensa: fix threadptr reload on return to userspace

commit 4229fb12a03e5da5882b420b0aa4a02e77447b86 upstream.

Userspace return code may skip restoring THREADPTR register if there are
no registers that need to be zeroed. This leads to spurious failures in
libc NPTL tests.

Always restore THREADPTR on return to userspace.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/xtensa/kernel/entry.S diff | blob | history
Domain: System / Kernel;