From patchwork Wed May 23 07:02:11 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Guo X-Patchwork-Id: 918888 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 40rRPg4QPqz9s15 for ; Wed, 23 May 2018 19:03:19 +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="A5NFaJHN"; 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 40rRPg2r85zF0pl for ; Wed, 23 May 2018 19:03:19 +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="A5NFaJHN"; 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="A5NFaJHN"; 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 40rPlN27HkzDrbm for ; Wed, 23 May 2018 17:48:32 +1000 (AEST) Received: by mail-pl0-x243.google.com with SMTP id w19-v6so12509754plq.4 for ; Wed, 23 May 2018 00:48:32 -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=FNRMaHlnNEMLQ/FQDlEvADmCHTHeDwXcoBCnMvCjjAc=; b=A5NFaJHNUleDQh/0ePisCnZyNDwGdb9sK6BOwLc8NJHo+wCX5krJ+mA0HSj1ZdDUys xN/9lzXZO3joKwXGdxu5y3Kre1Jd9hunMNLj4muipzAj73LEmT6yD5vHA6Czk+NX9Fo8 5AbOueIsUM4Gokd8jptD3HelCD+CBK9dI894N1Tfo++yDyBtktRnfcsdq3MJbK1fa+U6 Ufz4zmGIWRsVt+gwdFYxIko439mqJ+qDBeidvBMFLBu6lEtJKeMQGSqA5TiduAq86m2b 4Tz6j63F9JX5OR3mcKHbCfBJVFxWV0sU/IqmqHurSpmoBH9FPvO3iPbDWOV5mQfS3lPp 8VMA== 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=FNRMaHlnNEMLQ/FQDlEvADmCHTHeDwXcoBCnMvCjjAc=; b=NaBCboIGIJVpnVYPzZIyzuuS7ImTx1KFweShO1Vtxqi0Qf6HY4KEhPfABc7OfU1V79 IB99XrJu8tl/vxcdmDq0LzaZloLTIewpwV8+IkiUVFm1cyowyn3LEECnsSqWXZ2osIHl NW73asUWgmL9bLETsn1HNl4QIs5AwEdykorQDyLfPju7Gl7Q1weIGLSLKlQQ682nkWN7 LfKyzGLs8KAUYIgU5I5NUdrlz+UxO6xpnG6sEaclVGGkpTvE4wGicxpdP8CbBHsOx+Xu QNlAM6SsFcikg7/qnKED3oV1cJb5IOzrSC4wuTOnro4SCQTkvfyhxZr3DxOVrNIzUiBb YsPw== X-Gm-Message-State: ALKqPwegwhIbVpM0fY2l5oKJFY23ZMa0jAswSUW2FXP/ZC/6Ai07tyy/ h7PYh1GcUvDIy3bFIySzWxivSw== X-Google-Smtp-Source: AB8JxZq7/BLpV22f5wY8ggc9n5NGx1rVdJSlvceFHA3/0WhE9EP3vZ3RGBCb13kkvxxDs2Ev/0Yz1Q== X-Received: by 2002:a17:902:9048:: with SMTP id w8-v6mr1873923plz.34.1527061710359; Wed, 23 May 2018 00:48:30 -0700 (PDT) Received: from simonLocalRHEL7.cn.ibm.com ([112.73.0.89]) by smtp.gmail.com with ESMTPSA id a4-v6sm39079171pfj.19.2018.05.23.00.48.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 23 May 2018 00:48:29 -0700 (PDT) From: wei.guo.simon@gmail.com To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v4 28/29] KVM: PPC: remove load/put vcpu for KVM_GET_REGS/KVM_SET_REGS Date: Wed, 23 May 2018 15:02:11 +0800 Message-Id: <1527058932-7434-29-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 In both HV/PR KVM, the KVM_SET_REGS/KVM_GET_REGS ioctl should be able to perform without load vcpu. This patch adds KVM_SET_ONE_REG/KVM_GET_ONE_REG implementation to async ioctl function. Due to the vcpu mutex locking/unlock has been moved out of vcpu_load() /vcpu_put(), KVM_SET_REGS/KVM_GET_REGS don't need to do ioctl with loading vcpu anymore. This patch removes vcpu_load()/vcpu_put() from KVM_SET_REGS/KVM_GET_REGS ioctl. Signed-off-by: Simon Guo --- arch/powerpc/kvm/book3s.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 97d4a11..523c68f 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -509,8 +509,6 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) { int i; - vcpu_load(vcpu); - regs->pc = kvmppc_get_pc(vcpu); regs->cr = kvmppc_get_cr(vcpu); regs->ctr = kvmppc_get_ctr(vcpu); @@ -532,7 +530,6 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) regs->gpr[i] = kvmppc_get_gpr(vcpu, i); - vcpu_put(vcpu); return 0; } @@ -540,8 +537,6 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) { int i; - vcpu_load(vcpu); - kvmppc_set_pc(vcpu, regs->pc); kvmppc_set_cr(vcpu, regs->cr); kvmppc_set_ctr(vcpu, regs->ctr); @@ -562,7 +557,6 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) kvmppc_set_gpr(vcpu, i, regs->gpr[i]); - vcpu_put(vcpu); return 0; }