[ 189/221] KVM: PPC: 44x: fix DCR read/write

Greg Kroah-Hartman
2013-01-16T00:00:17Z

From: Alexander Graf <agraf@suse.de>

commit e43a028752fed049e4bd94ef895542f96d79fa74 upstream.

When remembering the direction of a DCR transaction, we should write
to the same variable that we interpret on later when doing vcpu_run
again.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: CAI Qian <caiqian@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
arch/powerpc/kvm/44x_emulate.c | 2 ++
1 file changed, 2 insertions(+)

--- a/arch/powerpc/kvm/44x_emulate.c
+++ b/arch/powerpc/kvm/44x_emulate.c
@@ -76,6 +76,7 @@ int kvmppc_core_emulate_op(struct kvm_ru
run->dcr.dcrn = dcrn;
run->dcr.data = 0;
run->dcr.is_write = 0;
+ vcpu->arch.dcr_is_write = 0;
vcpu->arch.io_gpr = rt;
vcpu->arch.dcr_needed = 1;
kvmppc_account_exit(vcpu, DCR_EXITS);
@@ -94,6 +95,7 @@ int kvmppc_core_emulate_op(struct kvm_ru
run->dcr.dcrn = dcrn;
run->dcr.data = kvmppc_get_gpr(vcpu, rs);
run->dcr.is_write = 1;
+ vcpu->arch.dcr_is_write = 1;
vcpu->arch.dcr_needed = 1;
kvmppc_account_exit(vcpu, DCR_EXITS);
emulated = EMULATE_DO_DCR;