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ppc: make Error **errp const where it is appropriate

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Mostly, Error ** is for returning error from the function, so the
callee sets it. However kvmppc_hint_smt_possible gets already filled
errp parameter. It doesn't change the pointer itself, only change the
internal state of referenced Error object. So we can make it Error
*const * errp, to stress the behavior. It will also help coccinelle
script (in future) to distinguish such cases from common errp usage.

While there, rename the function to
kvmppc_error_append_smt_possible_hint().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20191205174635.18758-8-vsementsov@virtuozzo.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message replaced]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2019-12-05 20:46:21 +03:00 committed by Markus Armbruster
parent 1a639fdf96
commit 0c115681a5
3 changed files with 4 additions and 4 deletions
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2
hw/ppc/spapr.c
View File

@ -2486,7 +2486,7 @@ static void spapr_set_vsmt_mode(SpaprMachineState *spapr, Error **errp)
" requires the use of VSMT mode %d.\n",
smp_threads, kvm_smt, spapr->vsmt);
}
kvmppc_hint_smt_possible(&local_err);
kvmppc_error_append_smt_possible_hint(&local_err);
goto out;
}
}

2
target/ppc/kvm.c
View File

@ -2076,7 +2076,7 @@ int kvmppc_set_smt_threads(int smt)
return ret;
}
void kvmppc_hint_smt_possible(Error **errp)
void kvmppc_error_append_smt_possible_hint(Error *const *errp)
{
int i;
GString *g;

4
target/ppc/kvm_ppc.h
View File

@ -28,7 +28,7 @@ void kvmppc_set_papr(PowerPCCPU *cpu);
int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr);
void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy);
int kvmppc_smt_threads(void);
void kvmppc_hint_smt_possible(Error **errp);
void kvmppc_error_append_smt_possible_hint(Error *const *errp);
int kvmppc_set_smt_threads(int smt);
int kvmppc_clear_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits);
int kvmppc_or_tsr_bits(PowerPCCPU *cpu, uint32_t tsr_bits);
@ -164,7 +164,7 @@ static inline int kvmppc_smt_threads(void)
return 1;
}
static inline void kvmppc_hint_smt_possible(Error **errp)
static inline void kvmppc_error_append_smt_possible_hint(Error *const *errp)
{
return;
}