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ppc: Rewrite ppc_get_compat_smt_threads()

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To continue consolidation of compatibility mode information, this rewrites
the ppc_get_compat_smt_threads() function using the table of compatiblity
modes in target-ppc/compat.c.

It's not a direct replacement, the new ppc_compat_max_threads() function
has simpler semantics - it just returns the number of threads the cpu
model has, taking into account any compatiblity mode it is in.

This no longer takes into account kvmppc_smt_threads() as the previous
version did.  That check wasn't useful because we check in
ppc_cpu_realizefn() that CPUs aren't instantiated with more threads
than kvm allows (or if we didn't things will already be broken and
this won't make it any worse).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
This commit is contained in:
David Gibson 2016-10-28 22:35:48 +11:00
parent 9d6f106552
commit 12dbeb16d0
4 changed files with 23 additions and 25 deletions
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2
target/ppc/cpu.h
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@ -1250,7 +1250,6 @@ void ppc_store_sdr1 (CPUPPCState *env, target_ulong value);
void ppc_store_msr (CPUPPCState *env, target_ulong value);
void ppc_cpu_list (FILE *f, fprintf_function cpu_fprintf);
int ppc_get_compat_smt_threads(PowerPCCPU *cpu);
#if defined(TARGET_PPC64)
#endif
@ -1325,6 +1324,7 @@ static inline int cpu_mmu_index (CPUPPCState *env, bool ifetch)
/* Compatibility modes */
#if defined(TARGET_PPC64)
void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp);
int ppc_compat_max_threads(PowerPCCPU *cpu);
#endif /* defined(TARGET_PPC64) */
#include "exec/cpu-all.h"