diff options
| author |   Will Deacon <will.deacon@arm.com> | 2017-03-10 20:32:20 +0000 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2017-03-20 16:16:51 +0000 |
| commit | 3689c75af2a3bc944826e6da663deee50c97d910 (patch) | |
| tree | 7832e0c0ba8bb513fde7d59cc3e461d0ea2841a8 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Linux 4.11-rc3 (diff) | |
| download | linux-rng-3689c75af2a3bc944826e6da663deee50c97d910.tar.xz linux-rng-3689c75af2a3bc944826e6da663deee50c97d910.zip | |
arm64: cpuinfo: remove I-cache VIPT aliasing detection
The CCSIDR_EL1.{NumSets,Associativity,LineSize} fields are only for use
in conjunction with set/way cache maintenance and are not guaranteed to
represent the actual microarchitectural features of a design.
The architecture explicitly states:
| You cannot make any inference about the actual sizes of caches based
| on these parameters.
We currently use these fields to determine whether or the I-cache is
aliasing, which is bogus and known to break on some platforms. Instead,
assume the I-cache is always aliasing if it advertises a VIPT policy.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions