From patchwork Wed Aug 7 02:05:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tiejun Chen X-Patchwork-Id: 265303 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 0C24A2C009E for ; Wed, 7 Aug 2013 12:05:54 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756873Ab3HGCFd (ORCPT ); Tue, 6 Aug 2013 22:05:33 -0400 Received: from mail.windriver.com ([147.11.1.11]:36433 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756527Ab3HGCFM (ORCPT ); Tue, 6 Aug 2013 22:05:12 -0400 Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail.windriver.com (8.14.5/8.14.3) with ESMTP id r77253M7025985 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 6 Aug 2013 19:05:04 -0700 (PDT) Received: from Linux.corp.ad.wrs.com (128.224.162.245) by ALA-HCA.corp.ad.wrs.com (147.11.189.50) with Microsoft SMTP Server id 14.2.342.3; Tue, 6 Aug 2013 19:05:03 -0700 From: Tiejun Chen To: CC: , , Subject: [v2][PATCH 1/1] KVM: PPC: Book3E HV: call SOFT_DISABLE_INTS to sync the software state Date: Wed, 7 Aug 2013 10:05:03 +0800 Message-ID: <1375841103-5731-1-git-send-email-tiejun.chen@windriver.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org We enter with interrupts disabled in hardware, but we need to call SOFT_DISABLE_INTS anyway to ensure that the software state is kept in sync instead of calling hard_irq_disable() directly. Signed-off-by: Tiejun Chen --- arch/powerpc/kvm/booke.c | 11 ----------- arch/powerpc/kvm/bookehv_interrupts.S | 10 ++++++++++ 2 files changed, 10 insertions(+), 11 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 17722d8..7653c9c 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -833,17 +833,6 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, int s; int idx; -#ifdef CONFIG_PPC64 - WARN_ON(local_paca->irq_happened != 0); -#endif - - /* - * We enter with interrupts disabled in hardware, but - * we need to call hard_irq_disable anyway to ensure that - * the software state is kept in sync. - */ - hard_irq_disable(); - /* update before a new last_exit_type is rewritten */ kvmppc_update_timing_stats(vcpu); diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index e8ed7d6..4deaf2e 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -33,6 +33,8 @@ #ifdef CONFIG_64BIT #include +#include +#include #else #include "../kernel/head_booke.h" /* for THREAD_NORMSAVE() */ #endif @@ -465,6 +467,14 @@ _GLOBAL(kvmppc_resume_host) mtspr SPRN_EPCR, r3 isync +#ifdef CONFIG_64BIT + /* + * We enter with interrupts disabled in hardware, but + * we need to call SOFT_DISABLE_INTS anyway to ensure + * that the software state is kept in sync. + */ + SOFT_DISABLE_INTS(r3,r5) +#endif /* Switch to kernel stack and jump to handler. */ PPC_LL r3, HOST_RUN(r1) mr r5, r14 /* intno */