From patchwork Thu Mar 21 13:07:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13598726 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5B8E2C54E58 for ; Thu, 21 Mar 2024 13:11:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rnIAo-00076Q-Tt; Thu, 21 Mar 2024 09:09:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rnIAm-00074Y-7d; Thu, 21 Mar 2024 09:09:32 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rnIAj-0002o6-RR; Thu, 21 Mar 2024 09:09:31 -0400 Received: from mail.maildlp.com (unknown [172.19.88.105]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4V0m2L1KyWztQWl; Thu, 21 Mar 2024 21:07:06 +0800 (CST) Received: from kwepemi500008.china.huawei.com (unknown [7.221.188.139]) by mail.maildlp.com (Postfix) with ESMTPS id C46B7140158; Thu, 21 Mar 2024 21:09:23 +0800 (CST) Received: from huawei.com (10.67.174.55) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Thu, 21 Mar 2024 21:09:23 +0800 To: , , , , , , , CC: Subject: [RFC PATCH v9 01/23] target/arm: Handle HCR_EL2 accesses for bits introduced with FEAT_NMI Date: Thu, 21 Mar 2024 13:07:50 +0000 Message-ID: <20240321130812.2983113-2-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240321130812.2983113-1-ruanjinjie@huawei.com> References: <20240321130812.2983113-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.174.55] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi500008.china.huawei.com (7.221.188.139) Received-SPF: pass client-ip=45.249.212.187; envelope-from=ruanjinjie@huawei.com; helo=szxga01-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Jinjie Ruan X-Patchwork-Original-From: Jinjie Ruan via From: Jinjie Ruan Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org FEAT_NMI defines another three new bits in HCRX_EL2: TALLINT, HCRX_VINMI and HCRX_VFNMI. When the feature is enabled, allow these bits to be written in HCRX_EL2. Signed-off-by: Jinjie Ruan Reviewed-by: Richard Henderson --- v9: - Declare cpu variable to reuse latter. v4: - Update the comment for FEAT_NMI in hcrx_write(). - Update the commit message, s/thress/three/g. v3: - Add Reviewed-by. - Add HCRX_VINMI and HCRX_VFNMI support in HCRX_EL2. - Upate the commit messsage. --- target/arm/cpu-features.h | 5 +++++ target/arm/helper.c | 9 ++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/target/arm/cpu-features.h b/target/arm/cpu-features.h index e5758d9fbc..b300d0446d 100644 --- a/target/arm/cpu-features.h +++ b/target/arm/cpu-features.h @@ -681,6 +681,11 @@ static inline bool isar_feature_aa64_sme(const ARMISARegisters *id) return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, SME) != 0; } +static inline bool isar_feature_aa64_nmi(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, NMI) != 0; +} + static inline bool isar_feature_aa64_tgran4_lpa2(const ARMISARegisters *id) { return FIELD_SEX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4) >= 1; diff --git a/target/arm/helper.c b/target/arm/helper.c index 3f3a5b55d4..7d6c6e9878 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -6183,13 +6183,20 @@ bool el_is_in_host(CPUARMState *env, int el) static void hcrx_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) { + ARMCPU *cpu = env_archcpu(env); + uint64_t valid_mask = 0; /* FEAT_MOPS adds MSCEn and MCE2 */ - if (cpu_isar_feature(aa64_mops, env_archcpu(env))) { + if (cpu_isar_feature(aa64_mops, cpu)) { valid_mask |= HCRX_MSCEN | HCRX_MCE2; } + /* FEAT_NMI adds TALLINT, VINMI and VFNMI */ + if (cpu_isar_feature(aa64_nmi, cpu)) { + valid_mask |= HCRX_TALLINT | HCRX_VINMI | HCRX_VFNMI; + } + /* Clear RES0 bits. */ env->cp15.hcrx_el2 = value & valid_mask; }