| From e43a028752fed049e4bd94ef895542f96d79fa74 Mon Sep 17 00:00:00 2001 |
| From: Alexander Graf <agraf@suse.de> |
| Date: Sat, 6 Oct 2012 03:56:35 +0200 |
| Subject: KVM: PPC: 44x: fix DCR read/write |
| |
| 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 |
| @@ -79,6 +79,7 @@ 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); |
| @@ -100,6 +101,7 @@ 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; |