| commit | 0388f9c7433024ccf3909b3404a745100f006a17 | [log] [tgz] |
|---|---|---|
| author | Will Deacon <will@kernel.org> | Tue Nov 24 18:49:26 2020 +0000 |
| committer | Will Deacon <will@kernel.org> | Wed Jan 20 14:46:04 2021 +0000 |
| tree | 0d74c4b9b4829c052f466183d05fb02eca833c14 | |
| parent | 46bdb4277f98e70d0c91f4289897ade533fe9e80 [diff] |
arm64: mm: Implement arch_wants_old_prefaulted_pte() On CPUs with hardware AF/DBM, initialising prefaulted PTEs as 'old' improves vmscan behaviour and does not appear to introduce any overhead elsewhere. Implement arch_wants_old_prefaulted_pte() to return 'true' if we detect hardware access flag support at runtime. This can be extended in future based on MIDR matching if necessary. Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will@kernel.org>