diff options
| author | Sean Christopherson <[email protected]> | 2023-10-27 11:21:56 -0700 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2023-11-13 05:31:38 -0500 |
| commit | 0003e2a414687fff6a75250d381e4abf345d663f (patch) | |
| tree | 7eca3e93819013585f28865630a850a57cc03a91 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 5a475554db1e476a14216e742ea2bdb77362d5d5 (diff) | |
mm: Add AS_UNMOVABLE to mark mapping as completely unmovable
Add an "unmovable" flag for mappings that cannot be migrated under any
circumstance. KVM will use the flag for its upcoming GUEST_MEMFD support,
which will not support compaction/migration, at least not in the
foreseeable future.
Test AS_UNMOVABLE under folio lock as already done for the async
compaction/dirty folio case, as the mapping can be removed by truncation
while compaction is running. To avoid having to lock every folio with a
mapping, assume/require that unmovable mappings are also unevictable, and
have mapping_set_unmovable() also set AS_UNEVICTABLE.
Cc: Matthew Wilcox <[email protected]>
Co-developed-by: Vlastimil Babka <[email protected]>
Signed-off-by: Vlastimil Babka <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions