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| author |   Nicholas Piggin <npiggin@gmail.com> | 2016-07-25 14:26:51 +1000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-08-29 12:47:56 +1000 |
| commit | cc7786d3ee7e3c979799db834b528db2c0834c2e (patch) | |
| tree | 5983f225848f30047b2f61ec6c04c7d779a302ac /Documentation | |
| parent | powerpc: move hmi.c to arch/powerpc/kvm/ (diff) | |
| download | linux-dev-cc7786d3ee7e3c979799db834b528db2c0834c2e.tar.xz linux-dev-cc7786d3ee7e3c979799db834b528db2c0834c2e.zip | |
powerpc/tm: do not use r13 for tabort_syscall
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)
Cc: stable@vger.kernel.org
Signed-off-by: Nick Piggin <npiggin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions