From nobody Mon Feb 9 18:55:11 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.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 1752824561013946.2734560320756; Fri, 18 Jul 2025 00:42:41 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ucfjj-0003SJ-7d; Fri, 18 Jul 2025 03:42:31 -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 1ucfW4-0002db-6c for qemu-devel@nongnu.org; Fri, 18 Jul 2025 03:28:25 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ucfVz-0002jp-2o for qemu-devel@nongnu.org; Fri, 18 Jul 2025 03:28:23 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8BxrnKO93lo0cksAQ--.27523S3; Fri, 18 Jul 2025 15:28:14 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowJCxocKI93lo0QwcAA--.17387S11; Fri, 18 Jul 2025 15:28:13 +0800 (CST) From: Bibo Mao To: Song Gao Cc: Jiaxun Yang , qemu-devel@nongnu.org Subject: [PATCH v2 9/9] target/loongarch: Use fine-grained tlb flush method Date: Fri, 18 Jul 2025 15:28:07 +0800 Message-Id: <20250718072807.3585466-10-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250718072807.3585466-1-maobibo@loongson.cn> References: <20250718072807.3585466-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowJCxocKI93lo0QwcAA--.17387S11 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1752824562667116600 Content-Type: text/plain; charset="utf-8" Qemu TCG provides some tlb flushing API, tlb can be flushed with specified mmu idx and virtual address. Here fine-grained tlb flush method is used. Signed-off-by: Bibo Mao --- target/loongarch/tcg/tlb_helper.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/target/loongarch/tcg/tlb_helper.c b/target/loongarch/tcg/tlb_h= elper.c index 47eb3ee318..0842b067b1 100644 --- a/target/loongarch/tcg/tlb_helper.c +++ b/target/loongarch/tcg/tlb_helper.c @@ -385,7 +385,8 @@ void helper_tlbclr(CPULoongArchState *env) } } =20 - tlb_flush(env_cpu(env)); + /* Flush all user tlb entries */ + tlb_flush_by_mmuidx(env_cpu(env), BIT(MMU_USER_IDX)); } =20 void helper_tlbflush(CPULoongArchState *env) @@ -447,7 +448,9 @@ void helper_invtlb_all_asid(CPULoongArchState *env, tar= get_ulong info) tlb->tlb_misc =3D FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0); } } - tlb_flush(env_cpu(env)); + + /* Flush all user tlb entries */ + tlb_flush_by_mmuidx(env_cpu(env), BIT(MMU_USER_IDX)); } =20 void helper_invtlb_page_asid(CPULoongArchState *env, target_ulong info, @@ -475,15 +478,19 @@ void helper_invtlb_page_asid(CPULoongArchState *env, = target_ulong info, if (!tlb_g && (tlb_asid =3D=3D asid) && (vpn =3D=3D (tlb_vppn >> compare_shift))) { tlb->tlb_misc =3D FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0); + tlb_flush_range_by_mmuidx(env_cpu(env), vpn << (tlb_ps + 1), + BIT_ULL(tlb_ps + 1), + BIT(MMU_USER_IDX), TARGET_LONG_BITS); + break; } } - tlb_flush(env_cpu(env)); } =20 void helper_invtlb_page_asid_or_g(CPULoongArchState *env, target_ulong info, target_ulong addr) { uint16_t asid =3D info & 0x3ff; + int mmu_idx; =20 for (int i =3D 0; i < LOONGARCH_TLB_MAX; i++) { LoongArchTLB *tlb =3D &env->tlb[i]; @@ -505,9 +512,13 @@ void helper_invtlb_page_asid_or_g(CPULoongArchState *e= nv, if ((tlb_g || (tlb_asid =3D=3D asid)) && (vpn =3D=3D (tlb_vppn >> compare_shift))) { tlb->tlb_misc =3D FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0); + mmu_idx =3D BIT(FIELD_EX64(tlb->tlb_entry0, TLBENTRY, PLV)); + tlb_flush_range_by_mmuidx(env_cpu(env), vpn << (tlb_ps + 1), + BIT_ULL(tlb_ps + 1), + mmu_idx, TARGET_LONG_BITS); + break; } } - tlb_flush(env_cpu(env)); } =20 bool loongarch_cpu_tlb_fill(CPUState *cs, vaddr address, int size, --=20 2.39.3