From nobody Mon Feb 9 16:34:15 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1550251029650676.1481663446704; Fri, 15 Feb 2019 09:17:09 -0800 (PST) Received: from localhost ([127.0.0.1]:43595 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1guh6k-0005nO-GF for importer@patchew.org; Fri, 15 Feb 2019 12:17:05 -0500 Received: from eggs.gnu.org ([209.51.188.92]:33492) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gugrB-0001sn-R5 for qemu-devel@nongnu.org; Fri, 15 Feb 2019 12:01:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gugr9-0005e2-N0 for qemu-devel@nongnu.org; Fri, 15 Feb 2019 12:00:57 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:45286) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gugr7-0005Ql-Id for qemu-devel@nongnu.org; Fri, 15 Feb 2019 12:00:54 -0500 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1FGxrma087464 for ; Fri, 15 Feb 2019 12:00:50 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2qp0p2tnec-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 15 Feb 2019 12:00:49 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 15 Feb 2019 17:00:41 -0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x1FH0eZM54460510 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 15 Feb 2019 17:00:40 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 88F2E4C06A; Fri, 15 Feb 2019 17:00:40 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7F2494C050; Fri, 15 Feb 2019 17:00:40 +0000 (GMT) Received: from smtp.lab.toulouse-stg.fr.ibm.com (unknown [9.101.4.1]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 15 Feb 2019 17:00:40 +0000 (GMT) Received: from zorba.lab.toulouse-stg.fr.ibm.com (zorba.lab.toulouse-stg.fr.ibm.com [9.101.4.32]) by smtp.lab.toulouse-stg.fr.ibm.com (Postfix) with ESMTP id 56F0A220295; Fri, 15 Feb 2019 18:00:39 +0100 (CET) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: David Gibson Date: Fri, 15 Feb 2019 18:00:26 +0100 X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190215170029.15641-1-clg@kaod.org> References: <20190215170029.15641-1-clg@kaod.org> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19021517-4275-0000-0000-0000030FFC55 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19021517-4276-0000-0000-0000381E1CB5 Message-Id: <20190215170029.15641-10-clg@kaod.org> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-15_13:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1034 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=605 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902150117 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-001b2d01.pphosted.com id x1FGxrma087464 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH 09/12] target/ppc: Flush the TLB locally when the LPIDR is written 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: qemu-ppc@nongnu.org, qemu-devel@nongnu.org, Suraj Jitindar Singh , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Benjamin Herrenschmidt Our TCG TLB only tags whether it's a HV vs a guest access, so it must be flushed when the LPIDR is changed. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: C=C3=A9dric Le Goater --- target/ppc/helper.h | 1 + target/ppc/misc_helper.c | 15 +++++++++++++++ target/ppc/translate_init.inc.c | 7 ++++++- 3 files changed, 22 insertions(+), 1 deletion(-) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index c7de04e06896..fe293937c646 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -718,6 +718,7 @@ DEF_HELPER_2(store_ptcr, void, env, tl) #endif DEF_HELPER_2(store_sdr1, void, env, tl) DEF_HELPER_2(store_pidr, void, env, tl) +DEF_HELPER_2(store_lpidr, void, env, tl) DEF_HELPER_FLAGS_2(store_tbl, TCG_CALL_NO_RWG, void, env, tl) DEF_HELPER_FLAGS_2(store_tbu, TCG_CALL_NO_RWG, void, env, tl) DEF_HELPER_FLAGS_2(store_atbl, TCG_CALL_NO_RWG, void, env, tl) diff --git a/target/ppc/misc_helper.c b/target/ppc/misc_helper.c index b88493009609..c65d1ade15c2 100644 --- a/target/ppc/misc_helper.c +++ b/target/ppc/misc_helper.c @@ -117,6 +117,21 @@ void helper_store_pidr(CPUPPCState *env, target_ulong = val) tlb_flush(CPU(cpu)); } =20 +void helper_store_lpidr(CPUPPCState *env, target_ulong val) +{ + PowerPCCPU *cpu =3D ppc_env_get_cpu(env); + + env->spr[SPR_LPIDR] =3D val; + + /* + * We need to flush the TLB on LPID changes as we only tag HV vs + * guest in TCG TLB. Also the quadrants means the HV will + * potentially access and cache entries for the current LPID as + * well. + */ + tlb_flush(CPU(cpu)); +} + void helper_store_hid0_601(CPUPPCState *env, target_ulong val) { target_ulong hid0; diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.in= c.c index 59e0b8676236..6f8b459e3b39 100644 --- a/target/ppc/translate_init.inc.c +++ b/target/ppc/translate_init.inc.c @@ -407,6 +407,11 @@ static void spr_write_pidr(DisasContext *ctx, int sprn= , int gprn) gen_helper_store_pidr(cpu_env, cpu_gpr[gprn]); } =20 +static void spr_write_lpidr(DisasContext *ctx, int sprn, int gprn) +{ + gen_helper_store_lpidr(cpu_env, cpu_gpr[gprn]); +} + static void spr_read_hior(DisasContext *ctx, int gprn, int sprn) { tcg_gen_ld_tl(cpu_gpr[gprn], cpu_env, offsetof(CPUPPCState, excp_prefi= x)); @@ -7876,7 +7881,7 @@ static void gen_spr_book3s_ids(CPUPPCState *env) spr_register_hv(env, SPR_LPIDR, "LPIDR", SPR_NOACCESS, SPR_NOACCESS, SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, &spr_write_lpidr, 0x00000000); spr_register_hv(env, SPR_HFSCR, "HFSCR", SPR_NOACCESS, SPR_NOACCESS, --=20 2.20.1