From patchwork Mon Feb 24 09:56:16 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: bibo mao X-Patchwork-Id: 13987726 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7E8CE24A048; Mon, 24 Feb 2025 09:56:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740390985; cv=none; b=rT3hETUw6Vv/gcFN/VpHXfuqUoKBoG+EpA0Q8OmWBpWHDoBmu74t826Og0cowqwar6ypc24eMix/X2zNM/S6ASeyCc7rrBlIbeP9kMjfhfH0Gk7f/fspFEG821qZSQNLWpeSD1fINvY2fHXqybNWArhMse0RcYGUgAW9YI8Deos= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740390985; c=relaxed/simple; bh=jr8k2chuEf4YyG2CznmAKtkBYn7Y+zMKBFySaDiAy6s=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=anUYPS2kSfahUtozlnBqm0ZYWGZ+fVu/Ilo0dVZhAtP/Ps1MernVPYMuQ56TXjaQBgrIkeCGSe8Mjhbk2z1xwCTkH27wRcdwVXTSTml6VQyW/DEs7SKyfVAiCSA4yOtDEL1MCwLoUcC9tX5PQjn8JLaNRGhlP9TJrd/WDufJUUU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8AxGHFDQrxnJq+AAA--.24653S3; Mon, 24 Feb 2025 17:56:19 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMBxXsVCQrxnRBkmAA--.9703S3; Mon, 24 Feb 2025 17:56:19 +0800 (CST) From: Bibo Mao To: Tianrui Zhao , Huacai Chen Cc: WANG Xuerui , kvm@vger.kernel.org, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] LoongArch: KVM: Add stub for kvm_arch_vcpu_preempted_in_kernel Date: Mon, 24 Feb 2025 17:56:16 +0800 Message-Id: <20250224095618.1436016-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250224095618.1436016-1-maobibo@loongson.cn> References: <20250224095618.1436016-1-maobibo@loongson.cn> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qMiowMBxXsVCQrxnRBkmAA--.9703S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Since Pause-Loop Exiting is not supported by LoongArch hardware, nor pv spinlock feature is not supported, function kvm_vcpu_on_spin() is not used. Function kvm_arch_vcpu_preempted_in_kernel() is defined as stub function here since it is only called by unused function kvm_vcpu_on_spin(). Signed-off-by: Bibo Mao --- arch/loongarch/kvm/vcpu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index 20f941af3e9e..3318a55a0699 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -364,6 +364,11 @@ bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu) return false; } +bool kvm_arch_vcpu_preempted_in_kernel(struct kvm_vcpu *vcpu) +{ + return false; +} + vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) { return VM_FAULT_SIGBUS;