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author | Paul Burton <paul.burton@imgtec.com> | 2014-10-28 12:25:51 +0100 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:44:06 +0100 |
commit | 14fa12df1d6bc1d3389a0fa842e0ebd8e8a9af26 (patch) | |
tree | 16f4abc106be0b59fcbf2920f366394c0d765f3f /arch/mips/loongson | |
parent | MIPS: cpu-probe: Set the FTLB probability bit on supported cores (diff) | |
download | linux-14fa12df1d6bc1d3389a0fa842e0ebd8e8a9af26.tar.xz linux-14fa12df1d6bc1d3389a0fa842e0ebd8e8a9af26.zip |
MIPS: fix EVA & non-SMP non-FPU FP context signal handling
The save_fp_context & restore_fp_context pointers were being assigned
to the wrong variables if either:
- The kernel is configured for UP & runs on a system without an FPU,
since b2ead5282885 "MIPS: Move & rename
fpu_emulator_{save,restore}_context".
- The kernel is configured for EVA, since ca750649e08c "MIPS: kernel:
signal: Prevent save/restore FPU context in user memory".
This would lead to FP context being clobbered incorrectly when setting
up a sigcontext, then the garbage values being saved uselessly when
returning from the signal.
Fix by swapping the pointer assignments appropriately.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: stable@vger.kernel.org # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8230/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson')
0 files changed, 0 insertions, 0 deletions