From patchwork Tue Feb 27 17:52:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Guo X-Patchwork-Id: 878802 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 3zrSgN3Y3Yz9s19 for ; Wed, 28 Feb 2018 06:00:00 +1100 (AEDT) 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="ZHIDXWkP"; dkim-atps=neutral Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3zrSgM2v3tzF0q2 for ; Wed, 28 Feb 2018 05:59:59 +1100 (AEDT) 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="ZHIDXWkP"; 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::243; helo=mail-pl0-x243.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="ZHIDXWkP"; dkim-atps=neutral Received: from mail-pl0-x243.google.com (mail-pl0-x243.google.com [IPv6:2607:f8b0:400e:c01::243]) (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 3zrRN96KHYzDr0b for ; Wed, 28 Feb 2018 05:01:45 +1100 (AEDT) Received: by mail-pl0-x243.google.com with SMTP id ay8so11817984plb.4 for ; Tue, 27 Feb 2018 10:01:45 -0800 (PST) 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=J4hLjdsunOuzl2LJQJL5xVnhooFVMszm9M8GYdzfdj0=; b=ZHIDXWkPLS2GJBgZMkS8s5lrSOmHEh0JHJdhPM8+MA9/0aZR2MquBe+W7/K+VlI1ik 9vSvudg8NEs9tfFcNCVWA+Ebofq8CB7xGI7jnawzBX/S1z5xxPt2mSWRh+ZRbZPmUzEr oIJl9ytdJMnEA3lKvGSbPC3jYAyY60VrVZQzTCsVWFseOYxPsd8axM0coTfM52xHRteE LPP+rbO4YzX5WbhV+RSMZHm/CMKp9+JxEm3FiEG6jBBhGcH3+fG4dLfUtDFZwX1gh/Pt QG+2ZlyA3hRyYbAWNNEj+dfGp3aACfzajz9mZA3PWE70B6Vk9XVnCEL6rrepffvpUmrV LHrQ== 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=J4hLjdsunOuzl2LJQJL5xVnhooFVMszm9M8GYdzfdj0=; b=BhAXulB/JSvxMucQqN/a4aaaeCu10NzjAnPJQoEHYvGZrl17JPYUNq1NfY3hTCDIeJ yX9iItfe9KsVRjq2NpeS4L4zWpWZvJZDEeDTuwYRhXSrPk2/L14LY7gvGYK46kyMbMl5 U/wlcupMG+VnP9scC8DS8cFOVM2ft7yEEt+nXdm0RMqDECB0RyQK3FoE/CeQqmaGeobz 0t3zjlABIqWUizShnB5XbZZmhXr1SwJdQ2bfudsdWhV8Sh7QD1TNETCINkRdFpNuhAsb 0fSaH1IVI79loUsU5OKOF7a+vLbbkGuFMCrEzRB7Wq9j7P7l1Qpg+ZokhEeQkSAIXawi KN8g== X-Gm-Message-State: APf1xPBrdbV1uLpyDdHUqOhffcOD2ilIJxIf8iddHQn8Iy4VZnXWXRhQ 3iNccjVZ/SbgPiy6d9qITsDHoA== X-Google-Smtp-Source: AH8x225kx1yG4LuZuMWM56XC8gJ0M+vVrjdZ6jYomXWEMTYkEUKy/88SqEXIlZ3YeAZl5Y7aCKlM5Q== X-Received: by 2002:a17:902:7046:: with SMTP id h6-v6mr14434739plt.301.1519754504126; Tue, 27 Feb 2018 10:01:44 -0800 (PST) Received: from simonLocalRHEL7.x64 ([101.80.181.226]) by smtp.gmail.com with ESMTPSA id m83sm24360910pfk.107.2018.02.27.10.01.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Feb 2018 10:01:43 -0800 (PST) From: wei.guo.simon@gmail.com To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 27/30] KVM: PPC: remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl Date: Wed, 28 Feb 2018 01:52:35 +0800 Message-Id: <1519753958-11756-17-git-send-email-wei.guo.simon@gmail.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1519753958-11756-1-git-send-email-wei.guo.simon@gmail.com> References: <1519753958-11756-1-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 cf3effd..7987fa3 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -1647,14 +1647,12 @@ 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; }