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target/ppc/kvm: set vcpu as online/offline 

Set the newly added register(KVM_REG_PPC_ONLINE) to indicate if the vcpu is
online(1) or offline(0)

KVM will use this information to set the RWMR register, which controls the PURR
and SPURR accumulation.

CC: paulus@samba.org
Signed-off-by: Nikunj A Dadhania <nikunj@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Nikunj A Dadhania 2018-09-04 14:54:18 +05:30 committed by David Gibson
parent b12a4efb76
commit a84f71793a
4 changed files with 19 additions and 0 deletions
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1
hw/ppc/spapr_cpu_core.c
View File

@ -90,6 +90,7 @@ void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip, target_ulong r
env->nip = nip; env->nip = nip;
env->gpr[3] = r3; env->gpr[3] = r3;
kvmppc_set_reg_ppc_online(cpu, 1);
CPU(cpu)->halted = 0; CPU(cpu)->halted = 0;
/* Enable Power-saving mode Exit Cause exceptions */ /* Enable Power-saving mode Exit Cause exceptions */
ppc_store_lpcr(cpu, env->spr[SPR_LPCR] | pcc->lpcr_pm); ppc_store_lpcr(cpu, env->spr[SPR_LPCR] | pcc->lpcr_pm);

2
hw/ppc/spapr_rtas.c
View File

@ -33,6 +33,7 @@
#include "sysemu/device_tree.h" #include "sysemu/device_tree.h"
#include "sysemu/cpus.h" #include "sysemu/cpus.h"
#include "sysemu/hw_accel.h" #include "sysemu/hw_accel.h"
#include "kvm_ppc.h"
#include "hw/ppc/spapr.h" #include "hw/ppc/spapr.h"
#include "hw/ppc/spapr_vio.h" #include "hw/ppc/spapr_vio.h"
@ -207,6 +208,7 @@ static void rtas_stop_self(PowerPCCPU *cpu, sPAPRMachineState *spapr,
* guest */ * guest */
ppc_store_lpcr(cpu, env->spr[SPR_LPCR] & ~pcc->lpcr_pm); ppc_store_lpcr(cpu, env->spr[SPR_LPCR] & ~pcc->lpcr_pm);
cs->halted = 1; cs->halted = 1;
kvmppc_set_reg_ppc_online(cpu, 0);
qemu_cpu_kick(cs); qemu_cpu_kick(cs);
} }

9
target/ppc/kvm.c
View File

@ -2783,3 +2783,12 @@ bool kvmppc_pvr_workaround_required(PowerPCCPU *cpu)
return !kvmppc_is_pr(cs->kvm_state); return !kvmppc_is_pr(cs->kvm_state);
} }
void kvmppc_set_reg_ppc_online(PowerPCCPU *cpu, unsigned int online)
{
CPUState *cs = CPU(cpu);
if (kvm_enabled()) {
kvm_set_one_reg(cs, KVM_REG_PPC_ONLINE, &online);
}
}

7
target/ppc/kvm_ppc.h
View File

@ -72,6 +72,7 @@ bool kvmppc_pvr_workaround_required(PowerPCCPU *cpu);
bool kvmppc_hpt_needs_host_contiguous_pages(void); bool kvmppc_hpt_needs_host_contiguous_pages(void);
void kvm_check_mmu(PowerPCCPU *cpu, Error **errp); void kvm_check_mmu(PowerPCCPU *cpu, Error **errp);
void kvmppc_set_reg_ppc_online(PowerPCCPU *cpu, unsigned int online);
#else #else
@ -187,6 +188,12 @@ static inline target_ulong kvmppc_configure_v3_mmu(PowerPCCPU *cpu,
return 0; return 0;
} }
static inline void kvmppc_set_reg_ppc_online(PowerPCCPU *cpu,
unsigned int online)
{
return;
}
#ifndef CONFIG_USER_ONLY #ifndef CONFIG_USER_ONLY
static inline bool kvmppc_spapr_use_multitce(void) static inline bool kvmppc_spapr_use_multitce(void)
{ {