From patchwork Tue Mar 26 08:06:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: bibo mao X-Patchwork-Id: 13603665 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 565EC134412; Tue, 26 Mar 2024 08:06:32 +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=1711440395; cv=none; b=b8MktuAa58bIIrdhMWOFCoG5Wdqw0sHUUESh1nBFjklbMX3Oe++22Tro5ozBf4gVgOrfmd5dGAkxgTODllXpDS8bDiUrtlH+htbxGcN625/quWTa0VTjPnaldJZboHzMnxF7uSRkOFKF0pn0u8G4yE4rjBCaLcBuwgVmzewo9Xo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711440395; c=relaxed/simple; bh=f9hCfYedwpxEoNBuNNWZFPjqKzvQdVCG0xEb4sz+K0Y=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=Gda3IwEnZYTXDYcYYmD8drPHgUS80AQJFqSsHSxP9DPshbYHAMWGScwc/mey3Yt5mVI3RCreeJX7jXKG0UPsQnxjbs5zDJNATdSg8BIevBqnO6mu3i4LztoI7saFMAp2e4VsFvx1yGfXMYgPBDO6+EJv3oCGN0l6ePKQjY05JtM= 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 _____8BxHOsDggJmCUoeAA--.61102S3; Tue, 26 Mar 2024 16:06:27 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxbRMBggJmhaRoAA--.9600S2; Tue, 26 Mar 2024 16:06:25 +0800 (CST) From: Bibo Mao To: Tianrui Zhao , Huacai Chen Cc: Juergen Gross , kvm@vger.kernel.org, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, x86@kernel.org Subject: [PATCH 0/2] LoongArch: Add steal time support Date: Tue, 26 Mar 2024 16:06:23 +0800 Message-Id: <20240326080625.898051-1-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxbRMBggJmhaRoAA--.9600S2 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Para-virt feature steal time is added in both kvm and guest kernel side. It is silimar with other architectures, steal time structure comes from guest memory, also pseduo register is used to save/restore base address of steal time structure, so that vm migration is supported also. Bibo Mao (2): LoongArch: KVM: Add steal time support in kvm side LoongArch: Add steal time support in guest side arch/loongarch/include/asm/kvm_host.h | 7 ++ arch/loongarch/include/asm/kvm_para.h | 10 ++ arch/loongarch/include/asm/loongarch.h | 1 + arch/loongarch/include/asm/paravirt.h | 5 + arch/loongarch/include/uapi/asm/kvm.h | 4 + arch/loongarch/kernel/paravirt.c | 130 +++++++++++++++++++++++++ arch/loongarch/kernel/time.c | 2 + arch/loongarch/kvm/exit.c | 35 ++++++- arch/loongarch/kvm/vcpu.c | 120 +++++++++++++++++++++++ 9 files changed, 309 insertions(+), 5 deletions(-) base-commit: 2ac2b1665d3fbec6ca709dd6ef3ea05f4a51ee4c