From patchwork Mon May 21 04:09:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Guo X-Patchwork-Id: 917397 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40q7Mj012Wz9rxs for ; Mon, 21 May 2018 15:57:05 +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="QeuIIGX8"; 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 40q7Mh5JSSzF11V for ; Mon, 21 May 2018 15:57:04 +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="QeuIIGX8"; 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::242; helo=mail-pl0-x242.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="QeuIIGX8"; dkim-atps=neutral Received: from mail-pl0-x242.google.com (mail-pl0-x242.google.com [IPv6:2607:f8b0:400e:c01::242]) (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 40q5pM2dC3zF0dT for ; Mon, 21 May 2018 14:46:35 +1000 (AEST) Received: by mail-pl0-x242.google.com with SMTP id w19-v6so8049640plq.4 for ; Sun, 20 May 2018 21:46:35 -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=QeuIIGX8sJp4EBkAutZEa0wAG2IekT2XH1ahXdqq+9Nbp7nEg5lOhxC5y2CoZNkiy5 mYfMdyly6GFSXpJaFh4uoh6dzJzjm+zjWWylYSmSBgfoTFYNP4cSRuP4Z3U1NbDpUAYI uD+KLpeoWJcPnsRWgTakh3SUS4FBA6kG2Von6BEk/DsF4AtIciq5jgHza4m3lkQj4cXo u22xsA9vuY5HcEq5hUA+kjThLn3Qm9BCGCdft0/nZcBlIORgmQQm5K6XVJd9+xbGNbN1 XiJaVnF3gD3VQBaCOcSHqOQ8t9KYxc2J+rqq8ObiX3Ns3uuzVAecFy4wEqZ4MwfujPRX URoA== 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=BEU4NFZC2s2NzJ4uwnkOLaAc3dA2KrYs8scCsbjsr8RdnVqNPAFlNp/t96ocl0U0eM HUl5jmc9gjid/ItpUGlWXh1MkayGhQQC/k5KrVOQB1NesudOAcUq+aPv4Xm68/v+0d7a Q8R3u9bpm4NBLUiaHvPPWnIlcieSplOA0UeStiLWVpL1TWA556WGBLpkx3HtrKPX7uAN +Ro3wRK2PJoBPQCTtyXDWSSqQSbR50s/9sILrrceV67oyxsDsKTmbS/T5xm5VRagITNR 5vGLH6BmnvOFEi+uvoCN0K5YMyObDOatacPYNGcjMSAT5RRec9xuTUfVL/K4i2ktn1Sl jITA== X-Gm-Message-State: ALKqPwftdWf1lVR6WvbhInIMuDtnrDYDM7QEkcbVeFQhSqNVwmwgKUda /0WcPfz5BjOrFrsniONmJCR7ng== X-Google-Smtp-Source: AB8JxZpbTssmLSkkZvmsTaOX2YQyK5BRNJC4arKEwLpkFRiNWEPA8D/nRx2mdLp/X041jfJtuD/GDw== X-Received: by 2002:a17:902:5952:: with SMTP id e18-v6mr19170717plj.351.1526877993528; Sun, 20 May 2018 21:46:33 -0700 (PDT) Received: from simonLocalRHEL7.cn.ibm.com ([112.73.0.89]) by smtp.gmail.com with ESMTPSA id t14-v6sm24575514pfa.31.2018.05.20.21.46.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 20 May 2018 21:46:32 -0700 (PDT) From: wei.guo.simon@gmail.com To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v3 27/29] KVM: PPC: remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl Date: Mon, 21 May 2018 12:09:44 +0800 Message-Id: <1526875786-10372-28-git-send-email-wei.guo.simon@gmail.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1526875786-10372-1-git-send-email-wei.guo.simon@gmail.com> References: <1526875786-10372-1-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; }