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powernv: CPU compatibility modes don't make sense for powernv
powernv has some code (derived from the spapr equivalent) used in device tree generation which depends on the CPU's compatibility mode / logical PVR. However, compatibility modes don't make sense on powernv - at least not as a property controlled by the host - because the guest in powernv has full hypervisor level access to the virtual system, and so owns the PCR (Processor Compatibility Register) which implements compatiblity modes. Note: the new logic doesn't take into account kvmppc_smt_threads() like the old version did. However, if core->nr_threads exceeds kvmppc_smt_threads() then things will already be broken and clamping the value in the device tree isn't going to save us. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Greg Kurz <groug@kaod.org> Reviewed-by: Thomas Huth <thuth@redhat.com>
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@ -110,7 +110,7 @@ static void powernv_create_core_node(PnvChip *chip, PnvCore *pc, void *fdt)
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CPUState *cs = CPU(DEVICE(pc->threads));
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DeviceClass *dc = DEVICE_GET_CLASS(cs);
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PowerPCCPU *cpu = POWERPC_CPU(cs);
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int smt_threads = ppc_get_compat_smt_threads(cpu);
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int smt_threads = CPU_CORE(pc)->nr_threads;
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CPUPPCState *env = &cpu->env;
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PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
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uint32_t servers_prop[smt_threads];
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@ -206,10 +206,6 @@ static void powernv_create_core_node(PnvChip *chip, PnvCore *pc, void *fdt)
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_FDT((fdt_setprop(fdt, offset, "ibm,pa-features",
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pa_features, sizeof(pa_features))));
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if (cpu->cpu_version) {
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_FDT((fdt_setprop_cell(fdt, offset, "cpu-version", cpu->cpu_version)));
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}
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/* Build interrupt servers properties */
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for (i = 0; i < smt_threads; i++) {
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servers_prop[i] = cpu_to_be32(pc->pir + i);
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