From nobody Tue Feb 10 13:36:46 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 1761187688315988.3922635524872; Wed, 22 Oct 2025 19:48:08 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vBlMc-0007jt-Ph; Wed, 22 Oct 2025 22:47:42 -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 1vBlMX-0007j9-Rn for qemu-devel@nongnu.org; Wed, 22 Oct 2025 22:47:37 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vBlMU-0006XX-Sa for qemu-devel@nongnu.org; Wed, 22 Oct 2025 22:47:37 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8AxP_A_l_loTZcZAA--.55004S3; Thu, 23 Oct 2025 10:47:27 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowJCxmcA+l_lo4ysCAQ--.19467S4; Thu, 23 Oct 2025 10:47:27 +0800 (CST) From: Bibo Mao To: Song Gao Cc: qemu-devel@nongnu.org Subject: [PATCH 2/3] target/loongarch: Add PMU register dump support in KVM mode Date: Thu, 23 Oct 2025 10:47:25 +0800 Message-Id: <20251023024726.2995960-3-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20251023024726.2995960-1-maobibo@loongson.cn> References: <20251023024726.2995960-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowJCxmcA+l_lo4ysCAQ--.19467S4 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: 1761187691728158500 Content-Type: text/plain; charset="utf-8" PMU is supported in KVM mode. With info registers command, PMU CSR registers should be dumped also. And it is not necessary in TCG mode. Signed-off-by: Bibo Mao --- target/loongarch/cpu.c | 14 +++++++++++++- target/loongarch/csr.c | 8 ++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 86490e0f72..deb7b0bcb9 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -129,6 +129,17 @@ static void loongarch_la464_init_csr(Object *obj) set_csr_flag(LOONGARCH_CSR_MERRERA, CSRFL_UNUSED); set_csr_flag(LOONGARCH_CSR_MERRSAVE, CSRFL_UNUSED); set_csr_flag(LOONGARCH_CSR_CTAG, CSRFL_UNUSED); + + if (cpu->pmu !=3D ON_OFF_AUTO_ON) { + set_csr_flag(LOONGARCH_CSR_PERFCTRL0, CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCNTR0, CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCTRL1, CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCNTR1, CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCTRL2, CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCNTR2, CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCTRL3, CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCNTR3, CSRFL_UNUSED); + } } #endif } @@ -346,8 +357,9 @@ static void loongarch_la464_initfn(Object *obj) env->CSR_PRCFG3 =3D FIELD_DP64(env->CSR_PRCFG3, CSR_PRCFG3, STLB_SETS,= 8); =20 cpu->msgint =3D ON_OFF_AUTO_OFF; - loongarch_la464_init_csr(obj); loongarch_cpu_post_init(obj); + /* Some features with OnOffAuto type is detected after cpu_post_init */ + loongarch_la464_init_csr(obj); } =20 static void loongarch_la132_initfn(Object *obj) diff --git a/target/loongarch/csr.c b/target/loongarch/csr.c index f973780bba..8574e5bc0a 100644 --- a/target/loongarch/csr.c +++ b/target/loongarch/csr.c @@ -94,6 +94,14 @@ static CSRInfo csr_info[] =3D { CSR_OFF_ARRAY(DMW, 1), CSR_OFF_ARRAY(DMW, 2), CSR_OFF_ARRAY(DMW, 3), + CSR_OFF(PERFCTRL0), + CSR_OFF(PERFCNTR0), + CSR_OFF(PERFCTRL1), + CSR_OFF(PERFCNTR1), + CSR_OFF(PERFCTRL2), + CSR_OFF(PERFCNTR2), + CSR_OFF(PERFCTRL3), + CSR_OFF(PERFCNTR3), CSR_OFF(DBG), CSR_OFF(DERA), CSR_OFF(DSAVE), --=20 2.39.3