diff options
| author | Michael Ellerman | 2014-03-14 06:00:29 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt | 2014-03-23 23:48:25 +0100 |
| commit | c2e37a2626a7471875f3a6452b99dfd3809972b9 (patch) | |
| tree | 60c994235d65095308288c8ee3543b1e027d2c92 /arch/powerpc/include/asm/gpio.h | |
| parent | powerpc: Add a cpu feature CPU_FTR_PMAO_BUG (diff) | |
| download | kernel-qcow2-linux-c2e37a2626a7471875f3a6452b99dfd3809972b9.tar.gz kernel-qcow2-linux-c2e37a2626a7471875f3a6452b99dfd3809972b9.tar.xz kernel-qcow2-linux-c2e37a2626a7471875f3a6452b99dfd3809972b9.zip | |
powerpc/perf: Add lost exception workaround
Some power8 revisions have a hardware bug where we can lose a PMU
exception, this commit adds a workaround to detect the bad condition and
rectify the situation.
See the comment in the commit for a full description.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/gpio.h')
0 files changed, 0 insertions, 0 deletions