1 What: /sys/bus/dax/devices/daxX.Y/al
2 Date: October, 2020
3 KernelVersion: v5.10
4 Contact: nvdimm@lists.linux.dev
5 Description:
6 (RW) Provides a way to specify
7 Values allowed are constrained
8 that back the dax device, and
9
10 What: /sys/bus/dax/devices/daxX.Y/ma
11 Date: October, 2020
12 KernelVersion: v5.10
13 Contact: nvdimm@lists.linux.dev
14 Description:
15 (WO) Provides a way to allocat
16 device. Specified in the forma
17
18 What: /sys/bus/dax/devices/daxX.Y/ma
19 What: /sys/bus/dax/devices/daxX.Y/ma
20 What: /sys/bus/dax/devices/daxX.Y/ma
21 Date: October, 2020
22 KernelVersion: v5.10
23 Contact: nvdimm@lists.linux.dev
24 Description:
25 (RO) A dax device may have mul
26 address ranges. These are repr
27 'mappingX' subdirectories. The
28 start physical address for the
29 indicates the end physical add
30 'page_offset' attribute indica
31 range in the dax device.
32
33 What: /sys/bus/dax/devices/daxX.Y/re
34 Date: June, 2019
35 KernelVersion: v5.3
36 Contact: nvdimm@lists.linux.dev
37 Description:
38 (RO) The resource attribute in
39 address of a dax device. In ca
40 constituent ranges, it indicat
41 first range.
42
43 What: /sys/bus/dax/devices/daxX.Y/si
44 Date: October, 2020
45 KernelVersion: v5.10
46 Contact: nvdimm@lists.linux.dev
47 Description:
48 (RW) The size attribute indica
49 device. For creating subdivide
50 an existing device, the new si
51 part of the reconfiguration pr
52
53 What: /sys/bus/dax/devices/daxX.Y/nu
54 Date: November, 2019
55 KernelVersion: v5.5
56 Contact: nvdimm@lists.linux.dev
57 Description:
58 (RO) If NUMA is enabled and th
59 backing device for this dax de
60 affinity for this device.
61
62 What: /sys/bus/dax/devices/daxX.Y/ta
63 Date: February, 2019
64 KernelVersion: v5.1
65 Contact: nvdimm@lists.linux.dev
66 Description:
67 (RO) The target-node attribute
68 device-dax instance may create
69 being online the device's 'num
70 closest online cpu node which
71 device 'numa_node'. Once it is
72 distinct numa node.
73
74 What: $(readlink -f /sys/bus/dax/dev
75 Date: October, 2020
76 KernelVersion: v5.10
77 Contact: nvdimm@lists.linux.dev
78 Description:
79 (RO) The available_size attrib
80 capacity. This only applies to
81 devices, since pmem devices ar
82 boundaries.
83
84 What: $(readlink -f /sys/bus/dax/dev
85 Date: July, 2017
86 KernelVersion: v5.1
87 Contact: nvdimm@lists.linux.dev
88 Description:
89 (RO) The size attribute indica
90 in bytes.
91
92 What: $(readlink -f /sys/bus/dax/dev
93 Date: October, 2020
94 KernelVersion: v5.10
95 Contact: nvdimm@lists.linux.dev
96 Description:
97 (RO) The align attribute indic
98 Changes on align may not alway
99 mappings were created with 2M
100 validates all ranges against t
101 resizing.
102
103 What: $(readlink -f /sys/bus/dax/dev
104 Date: October, 2020
105 KernelVersion: v5.10
106 Contact: nvdimm@lists.linux.dev
107 Description:
108 (RO) The seed device is a conc
109 able to split the region among
110 seed device, similar to libnvd
111 that starts with zero capacity
112 driver.
113
114 What: $(readlink -f /sys/bus/dax/dev
115 Date: October, 2020
116 KernelVersion: v5.10
117 Contact: nvdimm@lists.linux.dev
118 Description:
119 (RW) The create interface to t
120 create a new unconfigured dax
121 can then be configured (with a
122
123 What: $(readlink -f /sys/bus/dax/dev
124 Date: October, 2020
125 KernelVersion: v5.10
126 Contact: nvdimm@lists.linux.dev
127 Description:
128 (WO) The delete interface for
129 of any 0-sized and idle dax de
130
131 What: $(readlink -f /sys/bus/dax/dev
132 Date: July, 2017
133 KernelVersion: v5.1
134 Contact: nvdimm@lists.linux.dev
135 Description:
136 (RO) The id attribute indicate
137
138 What: /sys/bus/dax/devices/daxX.Y/me
139 Date: January, 2024
140 KernelVersion: v6.8
141 Contact: nvdimm@lists.linux.dev
142 Description:
143 (RW) Control the memmap_on_mem
144 were to be hotplugged as syste
145 the 'altmap' for the hotplugge
146 device being hotplugged (memma
147 placed on regular memory (memm
148 must be set before the device
149 driver (i.e. hotplugged into
150 depends on CONFIG_MHP_MEMMAP_O
151 memmap_on_memory parameter for
152 typically set on the kernel co
153 memory_hotplug.memmap_on_memor
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