xref: /linux/Documentation/driver-api/cxl/platform/acpi/slit.rst (revision 4b366c9d78e70bbf2e52f0a2fa2aca3e505ce95e)
1.. SPDX-License-Identifier: GPL-2.0
2
3========================================
4SLIT - System Locality Information Table
5========================================
6
7The system locality information table provides "abstract distances" between
8accessor and memory nodes.  Node without initiators (cpus) are infinitely (FF)
9distance away from all other nodes.
10
11The abstract distance described in this table does not describe any real
12latency of bandwidth information.
13
14Example ::
15
16    Signature : "SLIT"    [System Locality Information Table]
17   Localities : 0000000000000004
18 Locality   0 : 10 20 20 30
19 Locality   1 : 20 10 30 20
20 Locality   2 : FF FF 0A FF
21 Locality   3 : FF FF FF 0A
22