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target/ppc: Add helpers to check for SMT sibling threads

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Add helpers for TCG code to determine if there are SMT siblings
sharing per-core and per-lpar registers. This simplifies the
callers and makes SMT register topology simpler to modify with
later changes.

Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Nicholas Piggin 2024-05-24 17:49:52 +10:00
parent feb37fdc82
commit 50d8cfb949
5 changed files with 30 additions and 47 deletions
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2
target/ppc/cpu_init.c
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@ -6976,7 +6976,7 @@ static void ppc_cpu_realize(DeviceState *dev, Error **errp)
pcc->parent_realize(dev, errp);
if (env_cpu(env)->nr_threads > 1) {
if (!ppc_cpu_core_single_threaded(cs)) {
env->flags |= POWERPC_FLAG_SMT;
}