From nobody Tue Feb 10 20:50:09 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 1761812368050207.39211406565244; Thu, 30 Oct 2025 01:19:28 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vENqr-0000i8-3G; Thu, 30 Oct 2025 04:17:45 -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 1vENqp-0000hD-F1 for qemu-devel@nongnu.org; Thu, 30 Oct 2025 04:17:43 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vENqe-0003BB-Tx for qemu-devel@nongnu.org; Thu, 30 Oct 2025 04:17:42 -0400 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8DxudEWHwNpjIgcAA--.62769S3; Thu, 30 Oct 2025 16:17:26 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowJBxicAVHwNpKnMcAQ--.9832S5; Thu, 30 Oct 2025 16:17:26 +0800 (CST) From: Bibo Mao To: Song Gao Cc: qemu-devel@nongnu.org Subject: [PATCH v2 3/3] target/loongarch: Add PMU register dump support in KVM Date: Thu, 30 Oct 2025 16:17:24 +0800 Message-Id: <20251030081724.3921563-4-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20251030081724.3921563-1-maobibo@loongson.cn> References: <20251030081724.3921563-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowJBxicAVHwNpKnMcAQ--.9832S5 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, UPPERCASE_50_75=0.008 autolearn=no 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: 1761812370841158500 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 | 5 +++++ target/loongarch/csr.c | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 7daf290851..401ae75bd0 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -129,6 +129,11 @@ static void loongarch_la464_init_csr(DeviceState *dev) set_csr_flag(LOONGARCH_CSR_MERRERA, CSRFL_UNUSED); set_csr_flag(LOONGARCH_CSR_MERRSAVE, CSRFL_UNUSED); set_csr_flag(LOONGARCH_CSR_CTAG, CSRFL_UNUSED); + + for (i =3D env->perf_event_num; i < MAX_PERF_EVENTS; i++) { + set_csr_flag(LOONGARCH_CSR_PERFCTRL(i), CSRFL_UNUSED); + set_csr_flag(LOONGARCH_CSR_PERFCNTR(i), CSRFL_UNUSED); + } } #endif } diff --git a/target/loongarch/csr.c b/target/loongarch/csr.c index f973780bba..332a1396cc 100644 --- a/target/loongarch/csr.c +++ b/target/loongarch/csr.c @@ -94,6 +94,38 @@ static CSRInfo csr_info[] =3D { CSR_OFF_ARRAY(DMW, 1), CSR_OFF_ARRAY(DMW, 2), CSR_OFF_ARRAY(DMW, 3), + CSR_OFF_ARRAY(PERFCTRL, 0), + CSR_OFF_ARRAY(PERFCNTR, 0), + CSR_OFF_ARRAY(PERFCTRL, 1), + CSR_OFF_ARRAY(PERFCNTR, 1), + CSR_OFF_ARRAY(PERFCTRL, 2), + CSR_OFF_ARRAY(PERFCNTR, 2), + CSR_OFF_ARRAY(PERFCTRL, 3), + CSR_OFF_ARRAY(PERFCNTR, 3), + CSR_OFF_ARRAY(PERFCTRL, 4), + CSR_OFF_ARRAY(PERFCNTR, 4), + CSR_OFF_ARRAY(PERFCTRL, 5), + CSR_OFF_ARRAY(PERFCNTR, 5), + CSR_OFF_ARRAY(PERFCTRL, 6), + CSR_OFF_ARRAY(PERFCNTR, 6), + CSR_OFF_ARRAY(PERFCTRL, 7), + CSR_OFF_ARRAY(PERFCNTR, 7), + CSR_OFF_ARRAY(PERFCTRL, 8), + CSR_OFF_ARRAY(PERFCNTR, 8), + CSR_OFF_ARRAY(PERFCTRL, 9), + CSR_OFF_ARRAY(PERFCNTR, 9), + CSR_OFF_ARRAY(PERFCTRL, 10), + CSR_OFF_ARRAY(PERFCNTR, 10), + CSR_OFF_ARRAY(PERFCTRL, 11), + CSR_OFF_ARRAY(PERFCNTR, 11), + CSR_OFF_ARRAY(PERFCTRL, 12), + CSR_OFF_ARRAY(PERFCNTR, 12), + CSR_OFF_ARRAY(PERFCTRL, 13), + CSR_OFF_ARRAY(PERFCNTR, 13), + CSR_OFF_ARRAY(PERFCTRL, 14), + CSR_OFF_ARRAY(PERFCNTR, 14), + CSR_OFF_ARRAY(PERFCTRL, 15), + CSR_OFF_ARRAY(PERFCNTR, 15), CSR_OFF(DBG), CSR_OFF(DERA), CSR_OFF(DSAVE), --=20 2.39.3