spapr: Add ibm,max-associativity-domains property
Now recent kernels (i.e. since linux-stable commit a346137e9142 ("powerpc/numa: Use ibm,max-associativity-domains to discover possible nodes") support this property to mark initially memory-less NUMA nodes as "possible" to allow further memory hot-add to them. Advertise this property for pSeries machines to let guest kernels detect maximum supported node configuration and benefit from kernel side change when hot-add memory to specific, possibly empty before, NUMA node. Signed-off-by: Serhii Popovych <spopovyc@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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@ -909,6 +909,13 @@ static void spapr_dt_rtas(sPAPRMachineState *spapr, void *fdt)
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0, cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE),
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0, cpu_to_be32(SPAPR_MEMORY_BLOCK_SIZE),
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cpu_to_be32(max_cpus / smp_threads),
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cpu_to_be32(max_cpus / smp_threads),
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};
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};
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uint32_t maxdomains[] = {
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cpu_to_be32(4),
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cpu_to_be32(0),
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cpu_to_be32(0),
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cpu_to_be32(0),
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cpu_to_be32(nb_numa_nodes ? nb_numa_nodes - 1 : 0),
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};
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_FDT(rtas = fdt_add_subnode(fdt, 0, "rtas"));
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_FDT(rtas = fdt_add_subnode(fdt, 0, "rtas"));
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@ -945,6 +952,9 @@ static void spapr_dt_rtas(sPAPRMachineState *spapr, void *fdt)
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_FDT(fdt_setprop(fdt, rtas, "ibm,associativity-reference-points",
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_FDT(fdt_setprop(fdt, rtas, "ibm,associativity-reference-points",
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refpoints, sizeof(refpoints)));
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refpoints, sizeof(refpoints)));
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_FDT(fdt_setprop(fdt, rtas, "ibm,max-associativity-domains",
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maxdomains, sizeof(maxdomains)));
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_FDT(fdt_setprop_cell(fdt, rtas, "rtas-error-log-max",
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_FDT(fdt_setprop_cell(fdt, rtas, "rtas-error-log-max",
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RTAS_ERROR_LOG_MAX));
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RTAS_ERROR_LOG_MAX));
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_FDT(fdt_setprop_cell(fdt, rtas, "rtas-event-scan-rate",
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_FDT(fdt_setprop_cell(fdt, rtas, "rtas-event-scan-rate",
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