From nobody Wed Feb 11 06:57:43 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 175032320319530.261383565620008; Thu, 19 Jun 2025 01:53:23 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uSB05-0004XX-NU; Thu, 19 Jun 2025 04:52:03 -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 1uSAzt-0004WR-2i for qemu-devel@nongnu.org; Thu, 19 Jun 2025 04:51:50 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uSAzr-00030k-0X for qemu-devel@nongnu.org; Thu, 19 Jun 2025 04:51:48 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8Bx63GWz1NomrUZAQ--.58839S3; Thu, 19 Jun 2025 16:51:34 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front1 (Coremail) with SMTP id qMiowMAxDcVtz1NohtwgAQ--.30176S14; Thu, 19 Jun 2025 16:51:29 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: stefanha@gmail.com, Bibo Mao Subject: [PULL 12/14] hw/loongarch/virt: Disable emulation with IOCSR misc register Date: Thu, 19 Jun 2025 16:28:15 +0800 Message-Id: <20250619082817.1517996-13-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20250619082817.1517996-1-gaosong@loongson.cn> References: <20250619082817.1517996-1-gaosong@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMAxDcVtz1NohtwgAQ--.30176S14 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ 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=gaosong@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_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_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: 1750323204661116600 Content-Type: text/plain; charset="utf-8" From: Bibo Mao Register IOCSR MISC_FUNC_REG is to enable features about EXTIOI irqchip. If EXTIOI is emulated in kernel, MISC_FUNC_REG register should be emulated in kernel also. Reviewed-by: Song Gao Signed-off-by: Bibo Mao Message-ID: <20250606063523.2557513-1-maobibo@loongson.cn> Signed-off-by: Song Gao --- hw/loongarch/virt.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 34dfbd13e5..e5468b6af9 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -522,6 +522,10 @@ static MemTxResult virt_iocsr_misc_write(void *opaque,= hwaddr addr, =20 switch (addr) { case MISC_FUNC_REG: + if (kvm_irqchip_in_kernel()) { + return MEMTX_OK; + } + if (!virt_is_veiointc_enabled(lvms)) { return MEMTX_OK; } @@ -572,6 +576,10 @@ static MemTxResult virt_iocsr_misc_read(void *opaque, = hwaddr addr, ret =3D 0x303030354133ULL; /* "3A5000" */ break; case MISC_FUNC_REG: + if (kvm_irqchip_in_kernel()) { + return MEMTX_OK; + } + if (!virt_is_veiointc_enabled(lvms)) { ret |=3D BIT_ULL(IOCSRM_EXTIOI_EN); break; --=20 2.47.0