From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934523Ab3AOW6E (ORCPT ); Tue, 15 Jan 2013 17:58:04 -0500 Received: from mail.kernel.org ([198.145.19.201]:48740 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934494Ab3AOW56 (ORCPT ); Tue, 15 Jan 2013 17:57:58 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , alan@lxorguk.ukuu.org.uk, Alexander Graf , CAI Qian Subject: [ 68/71] KVM: PPC: 44x: fix DCR read/write Date: Tue, 15 Jan 2013 14:55:05 -0800 Message-Id: <20130115225345.305260361@linuxfoundation.org> X-Mailer: git-send-email 1.8.1.336.g94702dd In-Reply-To: <20130115225340.367496998@linuxfoundation.org> References: <20130115225340.367496998@linuxfoundation.org> User-Agent: quilt/0.60-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexander Graf 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 Signed-off-by: CAI Qian Signed-off-by: Greg Kroah-Hartman --- 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;