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target/ppc: Clarify compat mode max_threads value

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We recently had some discussions that were sidetracked for a while, because
nearly everyone misapprehended the purpose of the 'max_threads' field in
the compatiblity modes table.  It's all about guest expectations, not host
expectations or support (that's handled elsewhere).

In an attempt to avoid a repeat of that confusion, rename the field to
'max_vthreads' and add an explanatory comment.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
This commit is contained in:
David Gibson 2018-01-15 16:40:23 +11:00
parent 03ee51d354
commit abbc124753
3 changed files with 20 additions and 11 deletions
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2
target/ppc/cpu.h
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@ -1395,7 +1395,7 @@ void ppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr, Error **errp);
#if !defined(CONFIG_USER_ONLY)
void ppc_set_compat_all(uint32_t compat_pvr, Error **errp);
#endif
int ppc_compat_max_threads(PowerPCCPU *cpu);
int ppc_compat_max_vthreads(PowerPCCPU *cpu);
void ppc_compat_add_property(Object *obj, const char *name,
uint32_t *compat_pvr, const char *basedesc,
Error **errp);