diff options
| author | Nicholas Piggin <[email protected]> | 2019-02-15 20:20:20 +1000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2019-02-22 00:10:14 +1100 |
| commit | 7104dccfd052fde51eecc9972dad9c40bd3e0d11 (patch) | |
| tree | fe00f68990bb9d292c1d9188ef0573b925b29a0a /tools/perf/scripts/python/stat-cpi.py | |
| parent | 3d8810e02b7f811be3bc9ad2f433be4e245e8267 (diff) | |
powerpc/64s/hash: Fix assert_slb_presence() use of the slbfee. instruction
The slbfee. instruction must have bit 24 of RB clear, failure to do
so can result in false negatives that result in incorrect assertions.
This is not obvious from the ISA v3.0B document, which only says:
The hardware ignores the contents of RB 36:38 40:63 -- p.1032
This patch fixes the bug and also clears all other bits from PPC bit
36-63, which is good practice when dealing with reserved or ignored
bits.
Fixes: e15a4fea4dee ("powerpc/64s/hash: Add some SLB debugging tests")
Cc: [email protected] # v4.20+
Reported-by: Aneesh Kumar K.V <[email protected]>
Tested-by: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Nicholas Piggin <[email protected]>
Reviewed-by: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stat-cpi.py')
0 files changed, 0 insertions, 0 deletions