From patchwork Mon Sep 19 06:22:10 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Nikunj A. Dadhania" X-Patchwork-Id: 9338583 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4F0356022E for ; Mon, 19 Sep 2016 06:23:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3C3C329119 for ; Mon, 19 Sep 2016 06:23:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 30CAD2911E; Mon, 19 Sep 2016 06:23:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.4 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9003629119 for ; Mon, 19 Sep 2016 06:23:02 +0000 (UTC) Received: from localhost ([::1]:53020 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1blryn-00066I-5f for patchwork-qemu-devel@patchwork.kernel.org; Mon, 19 Sep 2016 02:23:01 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53530) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1blryK-00065R-Dn for qemu-devel@nongnu.org; Mon, 19 Sep 2016 02:22:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1blryG-0005HT-1c for qemu-devel@nongnu.org; Mon, 19 Sep 2016 02:22:31 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:37641) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1blryF-0005Gv-P6 for qemu-devel@nongnu.org; Mon, 19 Sep 2016 02:22:27 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u8J6I0Je049337 for ; Mon, 19 Sep 2016 02:22:26 -0400 Received: from e28smtp03.in.ibm.com (e28smtp03.in.ibm.com [125.16.236.3]) by mx0a-001b2d01.pphosted.com with ESMTP id 25h059vug9-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 19 Sep 2016 02:22:26 -0400 Received: from localhost by e28smtp03.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 19 Sep 2016 11:52:21 +0530 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 949AAE005E; Mon, 19 Sep 2016 11:51:39 +0530 (IST) Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64]) by d28relay03.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u8J6MJIr30802004; Mon, 19 Sep 2016 11:52:19 +0530 Received: from d28av02.in.ibm.com (localhost [127.0.0.1]) by d28av02.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u8J6MHGl016739; Mon, 19 Sep 2016 11:52:19 +0530 Received: from abhimanyu.in.ibm.com (abhimanyu.in.ibm.com [9.124.35.169]) by d28av02.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u8J6MHMo016723; Mon, 19 Sep 2016 11:52:17 +0530 From: Nikunj A Dadhania To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, benh@kernel.crashing.org Date: Mon, 19 Sep 2016 11:52:10 +0530 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1474266132-5397-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1474266132-5397-1-git-send-email-nikunj@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16091906-0008-0000-0000-0000034A6ECD X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16091906-0009-0000-0000-00000F86C504 Message-Id: <1474266132-5397-2-git-send-email-nikunj@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-09-19_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609020000 definitions=main-1609190092 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v5 1/3] target-ppc: add TLB_NEED_LOCAL_FLUSH flag X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, qemu-devel@nongnu.org, nikunj@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Introduces bit-flag in CPUPPCState::tlb_need_flush: TLB_NEED_LOCAL_FLUSH (0x1) - Flush local tlb This would indicate a pending local tlb flush (isync instructions, interrupts, ...) Signed-off-by: Nikunj A Dadhania Reviewed-by: David Gibson --- target-ppc/cpu.h | 1 + target-ppc/helper_regs.h | 4 ++-- target-ppc/mmu-hash64.c | 4 ++-- target-ppc/mmu_helper.c | 6 +++--- 4 files changed, 8 insertions(+), 7 deletions(-) diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h index 9617481..96d2def 100644 --- a/target-ppc/cpu.h +++ b/target-ppc/cpu.h @@ -1009,6 +1009,7 @@ struct CPUPPCState { bool tlb_dirty; /* Set to non-zero when modifying TLB */ bool kvm_sw_tlb; /* non-zero if KVM SW TLB API is active */ uint32_t tlb_need_flush; /* Delayed flush needed */ +#define TLB_NEED_LOCAL_FLUSH 0x1 #endif /* Other registers */ diff --git a/target-ppc/helper_regs.h b/target-ppc/helper_regs.h index 3d279f1..69204a5 100644 --- a/target-ppc/helper_regs.h +++ b/target-ppc/helper_regs.h @@ -157,9 +157,9 @@ static inline int hreg_store_msr(CPUPPCState *env, target_ulong value, static inline void check_tlb_flush(CPUPPCState *env) { CPUState *cs = CPU(ppc_env_get_cpu(env)); - if (env->tlb_need_flush) { - env->tlb_need_flush = 0; + if (env->tlb_need_flush & TLB_NEED_LOCAL_FLUSH) { tlb_flush(cs, 1); + env->tlb_need_flush &= ~TLB_NEED_LOCAL_FLUSH; } } #else diff --git a/target-ppc/mmu-hash64.c b/target-ppc/mmu-hash64.c index 8118143..1f52b64 100644 --- a/target-ppc/mmu-hash64.c +++ b/target-ppc/mmu-hash64.c @@ -110,7 +110,7 @@ void helper_slbia(CPUPPCState *env) * and we still don't have a tlb_flush_mask(env, n, mask) * in QEMU, we just invalidate all TLBs */ - env->tlb_need_flush = 1; + env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; } } } @@ -132,7 +132,7 @@ void helper_slbie(CPUPPCState *env, target_ulong addr) * and we still don't have a tlb_flush_mask(env, n, mask) * in QEMU, we just invalidate all TLBs */ - env->tlb_need_flush = 1; + env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; } } diff --git a/target-ppc/mmu_helper.c b/target-ppc/mmu_helper.c index 696bb03..d59d2f8 100644 --- a/target-ppc/mmu_helper.c +++ b/target-ppc/mmu_helper.c @@ -1965,7 +1965,7 @@ void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) * we just mark the TLB to be flushed later (context synchronizing * event or sync instruction on 32-bit). */ - env->tlb_need_flush = 1; + env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; break; #if defined(TARGET_PPC64) case POWERPC_MMU_64B: @@ -1979,7 +1979,7 @@ void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) * and we still don't have a tlb_flush_mask(env, n, mask) in QEMU, * we just invalidate all TLBs */ - env->tlb_need_flush = 1; + env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; break; #endif /* defined(TARGET_PPC64) */ default: @@ -2065,7 +2065,7 @@ void helper_store_sr(CPUPPCState *env, target_ulong srnum, target_ulong value) } } #else - env->tlb_need_flush = 1; + env->tlb_need_flush |= TLB_NEED_LOCAL_FLUSH; #endif } }