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ppc: Provide function to get CPU class of the host CPU

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When running with KVM, we might be interested in some details
of the host CPU class, too, so provide a function to get the
corresponding CPU class.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Thomas Huth 2016-06-07 17:39:38 +02:00 committed by David Gibson
parent 8cd2ce7aaa
commit 52b2519c4e
2 changed files with 21 additions and 5 deletions
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19
target-ppc/kvm.c
View file

@ -2329,6 +2329,19 @@ static PowerPCCPUClass *ppc_cpu_get_family_class(PowerPCCPUClass *pcc)
return POWERPC_CPU_CLASS(oc);
}
PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void)
{
uint32_t host_pvr = mfpvr();
PowerPCCPUClass *pvr_pcc;
pvr_pcc = ppc_cpu_class_by_pvr(host_pvr);
if (pvr_pcc == NULL) {
pvr_pcc = ppc_cpu_class_by_pvr_mask(host_pvr);
}
return pvr_pcc;
}
static int kvm_ppc_register_host_cpu_type(void)
{
TypeInfo type_info = {
@ -2336,14 +2349,10 @@ static int kvm_ppc_register_host_cpu_type(void)
.instance_init = kvmppc_host_cpu_initfn,
.class_init = kvmppc_host_cpu_class_init,
};
uint32_t host_pvr = mfpvr();
PowerPCCPUClass *pvr_pcc;
DeviceClass *dc;
pvr_pcc = ppc_cpu_class_by_pvr(host_pvr);
if (pvr_pcc == NULL) {
pvr_pcc = ppc_cpu_class_by_pvr_mask(host_pvr);
}
pvr_pcc = kvm_ppc_get_host_cpu_class();
if (pvr_pcc == NULL) {
return -1;
}

7
target-ppc/kvm_ppc.h
View file

@ -56,6 +56,7 @@ void kvmppc_hash64_write_pte(CPUPPCState *env, target_ulong pte_index,
bool kvmppc_has_cap_fixup_hcalls(void);
int kvmppc_enable_hwrng(void);
int kvmppc_put_books_sregs(PowerPCCPU *cpu);
PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void);
#else
@ -252,6 +253,12 @@ static inline int kvmppc_put_books_sregs(PowerPCCPU *cpu)
{
abort();
}
static inline PowerPCCPUClass *kvm_ppc_get_host_cpu_class(void)
{
return NULL;
}
#endif
#ifndef CONFIG_KVM