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| author | Nicholas Piggin <npiggin@gmail.com> | 2016-07-25 14:26:51 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-24 10:07:35 +0200 |
| commit | 53545131ecea3a41f4b1b4f6d8b04c8a2a78ac35 (patch) | |
| tree | 1d3ac5c108d56824666bdeac37fe97ce8ea2c3bc /include/math-emu | |
| parent | e70bb22b8fc502757332d06a484696ce3efa9d2a (diff) | |
powerpc/tm: do not use r13 for tabort_syscall
commit cc7786d3ee7e3c979799db834b528db2c0834c2e upstream.
tabort_syscall runs with RI=1, so a nested recoverable machine
check will load the paca into r13 and overwrite what we loaded
it with, because exceptions returning to privileged mode do not
restore r13.
Fixes: b4b56f9ecab4 (powerpc/tm: Abort syscalls in active transactions)
Signed-off-by: Nick Piggin <npiggin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/math-emu')
0 files changed, 0 insertions, 0 deletions