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spapr, spapr_numa: handle vcpu ibm,associativity 

Vcpus have an additional paramenter to be appended, vcpu_id. This
also changes the size of the of property itself, which is being
represented in index 0 of numa_assoc_array[cpu->node_id],
and defaults to MAX_DISTANCE_REF_POINTS for all cases but
vcpus.

All this logic makes more sense in spapr_numa.c, where we handle
everything NUMA and associativity. A new helper spapr_numa_fixup_cpu_dt()
was added, and spapr.c uses it the same way as it was using the former
spapr_fixup_cpu_numa_dt().

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200903220639.563090-3-danielhb413@gmail.com>
[dwg: Correct uint to int type, which can break windows builds]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Daniel Henrique Barboza 2020-09-03 19:06:34 -03:00 committed by David Gibson
parent f1aa45fffe
commit 8f86a40824
3 changed files with 30 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
hw/ppc/spapr.c
View File

@ -202,21 +202,6 @@ static int spapr_fixup_cpu_smt_dt(void *fdt, int offset, PowerPCCPU *cpu,
return ret;
}
static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, PowerPCCPU *cpu)
{
int index = spapr_get_vcpu_id(cpu);
uint32_t associativity[] = {cpu_to_be32(0x5),
cpu_to_be32(0x0),
cpu_to_be32(0x0),
cpu_to_be32(0x0),
cpu_to_be32(cpu->node_id),
cpu_to_be32(index)};
/* Advertise NUMA via ibm,associativity */
return fdt_setprop(fdt, offset, "ibm,associativity", associativity,
sizeof(associativity));
}
static void spapr_dt_pa_features(SpaprMachineState *spapr,
PowerPCCPU *cpu,
void *fdt, int offset)
@ -785,7 +770,7 @@ static void spapr_dt_cpu(CPUState *cs, void *fdt, int offset,
pft_size_prop, sizeof(pft_size_prop))));
if (ms->numa_state->num_nodes > 1) {
_FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cpu));
_FDT(spapr_numa_fixup_cpu_dt(spapr, fdt, offset, cpu));
}
_FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt));

27
hw/ppc/spapr_numa.c
View File

@ -45,6 +45,33 @@ void spapr_numa_write_associativity_dt(SpaprMachineState *spapr, void *fdt,
sizeof(spapr->numa_assoc_array[nodeid]))));
}
int spapr_numa_fixup_cpu_dt(SpaprMachineState *spapr, void *fdt,
int offset, PowerPCCPU *cpu)
{
int vcpu_assoc_size = NUMA_ASSOC_SIZE + 1;
uint32_t vcpu_assoc[vcpu_assoc_size];
int index = spapr_get_vcpu_id(cpu);
int i;
/*
* VCPUs have an extra 'cpu_id' value in ibm,associativity
* compared to other resources. Increment the size at index
* 0, copy all associativity domains already set, then put
* cpu_id last.
*/
vcpu_assoc[0] = cpu_to_be32(MAX_DISTANCE_REF_POINTS + 1);
for (i = 1; i <= MAX_DISTANCE_REF_POINTS; i++) {
vcpu_assoc[i] = spapr->numa_assoc_array[cpu->node_id][i];
}
vcpu_assoc[vcpu_assoc_size - 1] = cpu_to_be32(index);
/* Advertise NUMA via ibm,associativity */
return fdt_setprop(fdt, offset, "ibm,associativity",
vcpu_assoc, sizeof(vcpu_assoc));
}
/*
* Helper that writes ibm,associativity-reference-points and
* max-associativity-domains in the RTAS pointed by @rtas

2
include/hw/ppc/spapr_numa.h
View File

@ -27,5 +27,7 @@ void spapr_numa_associativity_init(SpaprMachineState *spapr,
void spapr_numa_write_rtas_dt(SpaprMachineState *spapr, void *fdt, int rtas);
void spapr_numa_write_associativity_dt(SpaprMachineState *spapr, void *fdt,
int offset, int nodeid);
int spapr_numa_fixup_cpu_dt(SpaprMachineState *spapr, void *fdt,
int offset, PowerPCCPU *cpu);
#endif /* HW_SPAPR_NUMA_H */