docs/specs/ppc-spapr-numa.rst

9 of the elements that impacts how QEMU views NUMA in pseries.
14 Associativity is defined as a group of platform resources that has
22 physical hierarchy of the platform, as one or more lists that starts
43 considering that the same resource can have multiple connections to the
49 The ibm,associativity-reference-points property is an array that is used
59 less significant boundaries. Allocated resources that belongs to the
61 that matches the relevancy of the boundary itself. Resources that belongs
73 the third level is the first element. Let's also consider that elements
76 means that the second would be 20 and the third level 40. For the P1 and
145 array that tells which level of associativity is considered to be relevant
148 The result is that each OS is free to implement and to interpret the distance
175 These changes are only effective for pseries-5.2 and newer machines that are
185 is that we needed to translate NUMA distance user input to pseries
192 that to the values that the Linux kernel operates on (10, 20, 40, 80, 160).
205 Any other strategy can be used here, but in the end the reality is that we'll
206 have to accept that a large array of values will be translated to the same
235 avoid being taken by surprise with that the guest is actually seeing in the
236 topology. There are enough potential surprises that are inherent to the
244 resource. This would be used to represent that the resource has multiple
246 NUMA distancing, should consider the associativity information that provides
251 NUMA topology using one associativity per resource, which means that choices
299 in mind that we don't need to revisit node 0 again, the distance from
329 Note that this is not what the user wanted - the desired distance between
375   nodes. This means that a distance equal to 20 between nodes 0 and 2 and the
398 commit a6030d7e0b35 exclusively for NVLink GPUs support. This means that
405 * all resources that aren't a NVLink GPU, it is guaranteed that they will belong
409 This also means that user input in QEMU command line does not change the