Merge v6.16.2linux-rolling-stable

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 136 insertions, 0 deletions

diff --git a/Documentation/driver-api/cxl/platform/example-configurations/one-dev-per-hb.rst b/Documentation/driver-api/cxl/platform/example-configurations/one-dev-per-hb.rst
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+.. SPDX-License-Identifier: GPL-2.0
+
+==========================
+One Device per Host Bridge
+==========================
+
+This system has a single socket with two CXL host bridges. Each host bridge
+has a single CXL memory expander with a 4GB of memory.
+
+Things to note:
+
+* Cross-Bridge interleave is not being used.
+* The expanders are in two separate but adjascent memory regions.
+* This CEDT/SRAT describes one node per device
+* The expanders have the same performance and will be in the same memory tier.
+
+:doc:`CEDT <../acpi/cedt>`::
+
+            Subtable Type : 00 [CXL Host Bridge Structure]
+                 Reserved : 00
+                   Length : 0020
+   Associated host bridge : 00000007
+    Specification version : 00000001
+                 Reserved : 00000000
+            Register base : 0000010370400000
+          Register length : 0000000000010000
+
+            Subtable Type : 00 [CXL Host Bridge Structure]
+                 Reserved : 00
+                   Length : 0020
+   Associated host bridge : 00000006
+    Specification version : 00000001
+                 Reserved : 00000000
+            Register base : 0000010380800000
+          Register length : 0000000000010000
+
+            Subtable Type : 01 [CXL Fixed Memory Window Structure]
+                 Reserved : 00
+                   Length : 002C
+                 Reserved : 00000000
+      Window base address : 0000001000000000
+              Window size : 0000000100000000
+ Interleave Members (2^n) : 00
+    Interleave Arithmetic : 00
+                 Reserved : 0000
+              Granularity : 00000000
+             Restrictions : 0006
+                    QtgId : 0001
+             First Target : 00000007
+
+            Subtable Type : 01 [CXL Fixed Memory Window Structure]
+                 Reserved : 00
+                   Length : 002C
+                 Reserved : 00000000
+      Window base address : 0000001100000000
+              Window size : 0000000100000000
+ Interleave Members (2^n) : 00
+    Interleave Arithmetic : 00
+                 Reserved : 0000
+              Granularity : 00000000
+             Restrictions : 0006
+                    QtgId : 0001
+             First Target : 00000006
+
+:doc:`SRAT <../acpi/srat>`::
+
+         Subtable Type : 01 [Memory Affinity]
+                Length : 28
+      Proximity Domain : 00000001
+             Reserved1 : 0000
+          Base Address : 0000001000000000
+        Address Length : 0000000100000000
+             Reserved2 : 00000000
+ Flags (decoded below) : 0000000B
+             Enabled : 1
+       Hot Pluggable : 1
+        Non-Volatile : 0
+
+         Subtable Type : 01 [Memory Affinity]
+                Length : 28
+      Proximity Domain : 00000002
+             Reserved1 : 0000
+          Base Address : 0000001100000000
+        Address Length : 0000000100000000
+             Reserved2 : 00000000
+ Flags (decoded below) : 0000000B
+             Enabled : 1
+       Hot Pluggable : 1
+        Non-Volatile : 0
+
+:doc:`HMAT <../acpi/hmat>`::
+
+               Structure Type : 0001 [SLLBI]
+                    Data Type : 00   [Latency]
+ Target Proximity Domain List : 00000000
+ Target Proximity Domain List : 00000001
+ Target Proximity Domain List : 00000002
+                        Entry : 0080
+                        Entry : 0100
+                        Entry : 0100
+
+               Structure Type : 0001 [SLLBI]
+                    Data Type : 03   [Bandwidth]
+ Target Proximity Domain List : 00000000
+ Target Proximity Domain List : 00000001
+ Target Proximity Domain List : 00000002
+                        Entry : 1200
+                        Entry : 0200
+                        Entry : 0200
+
+:doc:`SLIT <../acpi/slit>`::
+
+     Signature : "SLIT"    [System Locality Information Table]
+    Localities : 0000000000000003
+  Locality   0 : 10 20 20
+  Locality   1 : FF 0A FF
+  Locality   2 : FF FF 0A
+
+:doc:`DSDT <../acpi/dsdt>`::
+
+  Scope (_SB)
+  {
+    Device (S0D0)
+    {
+        Name (_HID, "ACPI0016" /* Compute Express Link Host Bridge */)  // _HID: Hardware ID
+        ...
+        Name (_UID, 0x07)  // _UID: Unique ID
+    }
+    ...
+    Device (S0D5)
+    {
+        Name (_HID, "ACPI0016" /* Compute Express Link Host Bridge */)  // _HID: Hardware ID
+        ...
+        Name (_UID, 0x06)  // _UID: Unique ID
+    }
+  }