From patchwork Wed May 23 07:02:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Guo X-Patchwork-Id: 918886 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40rRLJ2nYXz9s2L for ; Wed, 23 May 2018 19:00:24 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="gVNTHaz/"; dkim-atps=neutral Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 40rRLJ0jWQzF0xS for ; Wed, 23 May 2018 19:00:24 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="gVNTHaz/"; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:400e:c01::244; helo=mail-pl0-x244.google.com; envelope-from=wei.guo.simon@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="gVNTHaz/"; dkim-atps=neutral Received: from mail-pl0-x244.google.com (mail-pl0-x244.google.com [IPv6:2607:f8b0:400e:c01::244]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 40rPlK4SZWzDrbj for ; Wed, 23 May 2018 17:48:29 +1000 (AEST) Received: by mail-pl0-x244.google.com with SMTP id ay10-v6so12520474plb.1 for ; Wed, 23 May 2018 00:48:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=TJw0/biOyMo2HyhpQwghjceJ0fRAop6Y0Ljw9WOcpKk=; b=gVNTHaz/OJV1lnUoG1SCVo7spVgSKw747qeGI2v7vVtQZ2VoGzTHH4FaohvKyCBtY+ 7jBYFc+E85VRtMLWBGPnepnqbnkt18vjLjdLzWDc1DRUlNBz14hDpPXXS2nRGg4LUa1A Y/8WR0gcC52c8DPXXrSNDeVc/VqVto73B3wJaqHdphG4vY2jjDxz3Vs0W4JSYHWaAs/D 4eLKuT1KJeBcgCcyz8KzpFRujykIDnolQyhJpFXwiUU8OesCRjqUeMXHUmilYvQR6iK4 JJN/YwCJBDL1DRZF/+gKsUjDl86OwOKb3yEswcDTVUaiPSUUhAPuYT5MNEf17tPTPe/z wEvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=TJw0/biOyMo2HyhpQwghjceJ0fRAop6Y0Ljw9WOcpKk=; b=PuPiAbB8TkpwsNtCfMV8UzFlPPCC9vbJXeFGhKxHeFU7Eo6OLgh8iW9P0AxFpj8DUz BA+Bk6R89UskjSlICIQx7hUd0lZwjfev+59j0R4h1lSPYNFVFUog5N7VRwy09/q5g96m 9W2uLtt9QeQERLdJbOsrikgEQqp/0gQlq0n2RlhxOqi9pEkGtn/Scq4AxSXzqIgxUzD5 W1w4BYvkHF1OPBrZ3LjJ1oi8UQbzozHZFSZDd0pWSGu2Eg+aMVc7BG5J7liMeb7AjQvz upGYA5U5KE/95O/cwJlEiIfM96j9woDQ/yPoIThAfIJa2AxcI+yIFWAj+x62Y+t3YRp1 xY4g== X-Gm-Message-State: ALKqPwehQMSJRXhXsLKVtQ+uGR9uEJv/vVtILFaQKzs53xdH+RGIYRQn 03DnIHg3Jwh36+TohvsbAcw0uw== X-Google-Smtp-Source: AB8JxZpoAkksSal3szhceE8R22jkhtE4HF26WlzHGB5sUveKLi66WdTPLRmsYOKHDkC+u+wGGiA0TQ== X-Received: by 2002:a17:902:28ab:: with SMTP id f40-v6mr1887037plb.208.1527061707796; Wed, 23 May 2018 00:48:27 -0700 (PDT) Received: from simonLocalRHEL7.cn.ibm.com ([112.73.0.89]) by smtp.gmail.com with ESMTPSA id a4-v6sm39079171pfj.19.2018.05.23.00.48.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 23 May 2018 00:48:27 -0700 (PDT) From: wei.guo.simon@gmail.com To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v4 27/29] KVM: PPC: remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl Date: Wed, 23 May 2018 15:02:10 +0800 Message-Id: <1527058932-7434-28-git-send-email-wei.guo.simon@gmail.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1527058932-7434-1-git-send-email-wei.guo.simon@gmail.com> References: <1527058932-7434-1-git-send-email-wei.guo.simon@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Simon Guo , kvm-ppc@vger.kernel.org, kvm@vger.kernel.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Simon Guo Due to the vcpu mutex locking/unlock has been moved out of vcpu_load() /vcpu_put(), KVM_GET_ONE_REG and KVM_SET_ONE_REG doesn't need to do ioctl with loading vcpu anymore. This patch removes vcpu_load()/vcpu_put() from KVM_GET_ONE_REG and KVM_SET_ONE_REG ioctl. Signed-off-by: Simon Guo --- arch/powerpc/kvm/powerpc.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index c9098ff..5def68d 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -1801,14 +1801,12 @@ long kvm_arch_vcpu_ioctl(struct file *filp, { struct kvm_one_reg reg; r = -EFAULT; - vcpu_load(vcpu); if (copy_from_user(®, argp, sizeof(reg))) goto out; if (ioctl == KVM_SET_ONE_REG) r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); else r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); - vcpu_put(vcpu); break; }