Requests may want to tell us that we need to go back into host state,
so add a return value for the checks.
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
---
arch/powerpc/include/asm/kvm_ppc.h | 2 +-
arch/powerpc/kvm/book3s_pr.c | 6 +++++-
arch/powerpc/kvm/booke.c | 6 +++++-
arch/powerpc/kvm/powerpc.c | 6 ++++--
4 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 5459364..3dfc437 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -112,7 +112,7 @@ extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn,
ulong val);
extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn,
ulong *val);
-extern void kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
+extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
extern int kvmppc_booke_init(void);
extern void kvmppc_booke_exit(void);
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 71fa0f1..b3c584f 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -86,12 +86,16 @@ void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
kvmppc_giveup_ext(vcpu, MSR_VSX);
}
-void kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
+int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
{
+ int r = 1; /* Indicate we want to get back into the guest */
+
/* We misuse TLB_FLUSH to indicate that we want to clear
all shadow cache entries */
if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
kvmppc_mmu_pte_flush(vcpu, 0, 0);
+
+ return r;
}
/************* MMU Notifiers *************/
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 1917802..c364930 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -455,14 +455,18 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
return r;
}
-void kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
+int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
{
+ int r = 1; /* Indicate we want to get back into the guest */
+
if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
update_timer_ints(vcpu);
#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
kvmppc_core_flush_tlb(vcpu);
#endif
+
+ return r;
}
int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 07e86f8..da98b41 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -83,9 +83,11 @@ int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
/* Make sure we process requests preemptable */
local_irq_enable();
trace_kvm_check_requests(vcpu);
- kvmppc_core_check_requests(vcpu);
+ r = kvmppc_core_check_requests(vcpu);
local_irq_disable();
- continue;
+ if (r > 0)
+ continue;
+ break;
}
if (kvmppc_core_prepare_to_enter(vcpu)) {
--
1.6.0.2
--
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