diff options
| author | Anton Blanchard <anton@samba.org> | 2014-03-25 10:47:01 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-13 13:32:48 +0200 |
| commit | 9b12b053e0e4123df93f4b9a408d7afc64c1485f (patch) | |
| tree | 3869914934d69afd10d6c1b0f4ea26ec84b0e1d8 /arch/powerpc | |
| parent | 2981534733f5deaa4ed86bc7f91f3bd18152abe0 (diff) | |
KVM: PPC: Book3S HV: Fix KVM hang with CONFIG_KVM_XICS=n
commit 7505258c5fcb0a1cc3c76a47b4cf9506d21d10e6 upstream.
I noticed KVM is broken when KVM in-kernel XICS emulation
(CONFIG_KVM_XICS) is disabled.
The problem was introduced in 48eaef05 (KVM: PPC: Book3S HV: use
xics_wake_cpu only when defined). It used CONFIG_KVM_XICS to wrap
xics_wake_cpu, where CONFIG_PPC_ICP_NATIVE should have been
used.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 17fc9496b6ac..7a25d9218a05 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -86,7 +86,7 @@ static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu *vcpu) /* CPU points to the first thread of the core */ if (cpu != me && cpu >= 0 && cpu < nr_cpu_ids) { -#ifdef CONFIG_KVM_XICS +#ifdef CONFIG_PPC_ICP_NATIVE int real_cpu = cpu + vcpu->arch.ptid; if (paca[real_cpu].kvm_hstate.xics_phys) xics_wake_cpu(real_cpu); @@ -1360,9 +1360,7 @@ static void kvmppc_start_thread(struct kvm_vcpu *vcpu) smp_wmb(); #if defined(CONFIG_PPC_ICP_NATIVE) && defined(CONFIG_SMP) if (cpu != smp_processor_id()) { -#ifdef CONFIG_KVM_XICS xics_wake_cpu(cpu); -#endif if (vcpu->arch.ptid) ++vc->n_woken; } |