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| author | Alexander Graf <agraf@suse.de> | 2012-02-28 12:00:41 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-04-08 12:55:29 +0300 |
| commit | 03660ba27020250eae0b5a2722e0c7bec4968c3c (patch) | |
| tree | c774ab4a1154ee04374b31edcee9883a926defea /arch/powerpc | |
| parent | 7cc1e8ee78f469ecff8aa29465325f1e4c5e1b5f (diff) | |
| download | linux-03660ba27020250eae0b5a2722e0c7bec4968c3c.tar.gz linux-03660ba27020250eae0b5a2722e0c7bec4968c3c.tar.xz linux-03660ba27020250eae0b5a2722e0c7bec4968c3c.zip | |
KVM: PPC: Booke: only prepare to enter when we enter
So far, we've always called prepare_to_enter even when all we did was return
to the host. This patch changes that semantic to only call prepare_to_enter
when we actually want to get back into the guest.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 8e8aa4cb5968..9f27258d8035 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -464,7 +464,7 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) * * returns !0 if a signal is pending and check_signal is true */ -static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu, bool check_signal) +static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) { int r = 0; @@ -477,7 +477,7 @@ static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu, bool check_signal) continue; } - if (check_signal && signal_pending(current)) { + if (signal_pending(current)) { r = 1; break; } @@ -509,7 +509,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) } local_irq_disable(); - if (kvmppc_prepare_to_enter(vcpu, true)) { + if (kvmppc_prepare_to_enter(vcpu)) { kvm_run->exit_reason = KVM_EXIT_INTR; ret = -EINTR; goto out; @@ -946,11 +946,13 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, * To avoid clobbering exit_reason, only check for signals if we * aren't already exiting to userspace for some other reason. */ - local_irq_disable(); - if (kvmppc_prepare_to_enter(vcpu, !(r & RESUME_HOST))) { - run->exit_reason = KVM_EXIT_INTR; - r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV); - kvmppc_account_exit(vcpu, SIGNAL_EXITS); + if (!(r & RESUME_HOST)) { + local_irq_disable(); + if (kvmppc_prepare_to_enter(vcpu)) { + run->exit_reason = KVM_EXIT_INTR; + r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV); + kvmppc_account_exit(vcpu, SIGNAL_EXITS); + } } return r; |