From patchwork Wed Oct 16 00:49:30 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoffer Dall X-Patchwork-Id: 3049521 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B7CF79F2B6 for ; Wed, 16 Oct 2013 00:51:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DCFA020434 for ; Wed, 16 Oct 2013 00:50:59 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C59902042A for ; Wed, 16 Oct 2013 00:50:58 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWFJT-0001Rb-3g; Wed, 16 Oct 2013 00:50:11 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWFJH-0002a9-5O; Wed, 16 Oct 2013 00:49:59 +0000 Received: from mail-pd0-f182.google.com ([209.85.192.182]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWFIt-0002Ut-Oi for linux-arm-kernel@lists.infradead.org; Wed, 16 Oct 2013 00:49:38 +0000 Received: by mail-pd0-f182.google.com with SMTP id r10so51246pdi.13 for ; Tue, 15 Oct 2013 17:49:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=50PuNUOl06bIv0h10AqcP9WOWttGJlTFJDSsIIMaET0=; b=bHBvoJKW58vn0ejgpfytABfxa2jL9XzMi5rAfoFFcN/IJGS8RAAhnkvJLnM9QXaDOF VEHpJ9Dj0OAAUzO+zdRVT+Wc1G/wtN1MPTn1EsO9cw4sen5bM8jshvBtrieprQ6Rtt1+ 9arLQcO2lnR+3VAwaU9Z/5fQRI3B3QMSd5TXQwrEOlkKaVflCgOude6gaymNvUYQLlFR PUnzGiEMU7fxSsP8XQ0ObdVBM1b83twd87v/Ma8RVFgyWLRUYwpCwoJfm8R6kG45sNLD 97qN8MDRZnYlhyR9lgtnKKPbkFtVEMhPO470SM9EpzhnQHRz53J1OmRBSDKxdR51LqQq H5Tg== X-Gm-Message-State: ALoCoQlGJbmbe3nXdiBKuD99Qb27lvaQPKJ91rxR6Fvl23GgxI6zlcN//sFfc7C0jMps5vTWAjSf X-Received: by 10.66.27.43 with SMTP id q11mr583700pag.97.1381884554186; Tue, 15 Oct 2013 17:49:14 -0700 (PDT) Received: from localhost.localdomain (c-67-169-181-221.hsd1.ca.comcast.net. [67.169.181.221]) by mx.google.com with ESMTPSA id bp4sm84715543pbb.42.1969.12.31.16.00.00 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 15 Oct 2013 17:49:13 -0700 (PDT) From: Christoffer Dall To: Gleb Natapov , Paolo Bonzini Subject: [PATCH 2/9] ARM: KVM: Implement kvm_vcpu_preferred_target() function Date: Tue, 15 Oct 2013 17:49:30 -0700 Message-Id: <1381884577-24747-3-git-send-email-christoffer.dall@linaro.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1381884577-24747-1-git-send-email-christoffer.dall@linaro.org> References: <1381884577-24747-1-git-send-email-christoffer.dall@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131015_204935_971574_F1BA23C0 X-CRM114-Status: GOOD ( 12.20 ) X-Spam-Score: -1.9 (-) Cc: Anup Patel , kvm@vger.kernel.org, Christoffer Dall , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Pranavkumar Sawargaonkar X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anup Patel This patch implements kvm_vcpu_preferred_target() function for KVM ARM which will help us implement KVM_ARM_PREFERRED_TARGET ioctl for user space. Signed-off-by: Anup Patel Signed-off-by: Pranavkumar Sawargaonkar Signed-off-by: Christoffer Dall --- arch/arm/include/asm/kvm_host.h | 1 + arch/arm/kvm/guest.c | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+) diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index 7d22517..76f3c19 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -154,6 +154,7 @@ struct kvm_vcpu_stat { struct kvm_vcpu_init; int kvm_vcpu_set_target(struct kvm_vcpu *vcpu, const struct kvm_vcpu_init *init); +int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); struct kvm_one_reg; diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c index 152d036..ec98209 100644 --- a/arch/arm/kvm/guest.c +++ b/arch/arm/kvm/guest.c @@ -222,6 +222,26 @@ int kvm_vcpu_set_target(struct kvm_vcpu *vcpu, return kvm_reset_vcpu(vcpu); } +int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init) +{ + int target = kvm_target_cpu(); + + if (target < 0) + return -ENODEV; + + memset(init, 0, sizeof(*init)); + + /* + * For now, we don't return any features. + * In future, we might use features to return target + * specific features available for the preferred + * target type. + */ + init->target = (__u32)target; + + return 0; +} + int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) { return -EINVAL;