From patchwork Tue Apr 15 06:14:12 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 3989241 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 35D90C0DA2 for ; Tue, 15 Apr 2014 06:18:12 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 759EA201BC for ; Tue, 15 Apr 2014 06:18:11 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9C3F82013D for ; Tue, 15 Apr 2014 06:18:10 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WZwfG-0007ws-WB; Tue, 15 Apr 2014 06:16:15 +0000 Received: from mail-pa0-f46.google.com ([209.85.220.46]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WZwf6-0007aU-AE for linux-arm-kernel@lists.infradead.org; Tue, 15 Apr 2014 06:16:04 +0000 Received: by mail-pa0-f46.google.com with SMTP id kx10so9132774pab.5 for ; Mon, 14 Apr 2014 23:15:43 -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=+W+5MOMrZzvAHY/ebsqO/RdHK5KrybjLq30YGT2lx1A=; b=VEtpaWS8lpJ49kGsmPNgJ5o0Gq9+SxnRvYnnmed4CCDkOPSU+KulDpNyPemY8hE0ik S+Zu6/1dSyBrhMc5N7+2Y8LAZtN3OUaJ0l9AJjfmn6XTWLrb0S1e4pnImJwC+UeQWd/9 4m/NxShN9pTnRnP2cRu6z8gxQ+9YR+MZmcHklPKmaBGhe5f1wWI6j2lMe2N1d23NGOPa CISdVkoH4rlJS9f2fmWp3y+kGOaTTIa33NWdUnyHlWmn1yMvbVzAQoNzxf8ekKi6Jx8z fXuabY+0aPv8ouSiXrJRPHPAVw/gNUqGER+M5APcp+V6NwxWpPGhcgguQK2avTummZUC 92nw== X-Gm-Message-State: ALoCoQkmuW7y12orKZoXkV7Q/trpT0pCPQ2MRGeG4XbKJ2Ibur28tDaFmgQ8TYx1/Be1Ji1qMugz X-Received: by 10.68.249.195 with SMTP id yw3mr7649072pbc.134.1397542543271; Mon, 14 Apr 2014 23:15:43 -0700 (PDT) Received: from pnqlab006.amcc.com ([182.73.239.130]) by mx.google.com with ESMTPSA id oz7sm37870688pbc.41.2014.04.14.23.15.38 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 14 Apr 2014 23:15:42 -0700 (PDT) From: Anup Patel To: kvmarm@lists.cs.columbia.edu Subject: [PATCH v9 09/12] ARM/ARM64: KVM: Emulate PSCI v0.2 MIGRATE_INFO_TYPE and related functions Date: Tue, 15 Apr 2014 11:44:12 +0530 Message-Id: <1397542455-354-10-git-send-email-anup.patel@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1397542455-354-1-git-send-email-anup.patel@linaro.org> References: <1397542455-354-1-git-send-email-anup.patel@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140414_231604_375006_FB7CC15A X-CRM114-Status: GOOD ( 12.27 ) X-Spam-Score: -0.7 (/) Cc: Mark Rutland , Rob Herring , linaro-kernel@lists.linaro.org, Anup Patel , Marc Zyngier , patches@apm.com, Ashwin Chaugule , linux-arm-kernel@lists.infradead.org, Christoffer Dall , 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=-2.6 required=5.0 tests=BAYES_00,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 This patch adds emulation of PSCI v0.2 MIGRATE, MIGRATE_INFO_TYPE, and MIGRATE_INFO_UP_CPU function calls for KVM ARM/ARM64. KVM ARM/ARM64 being a hypervisor (and not a Trusted OS), we cannot provide this functions hence we emulate these functions in following way: 1. MIGRATE - Returns "Not Supported" 2. MIGRATE_INFO_TYPE - Return 2 i.e. Trusted OS is not present 3. MIGRATE_INFO_UP_CPU - Returns "Not Supported" Signed-off-by: Anup Patel Signed-off-by: Pranavkumar Sawargaonkar Reviewed-by: Christoffer Dall Acked-by: Marc Zyngier --- arch/arm/kvm/psci.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c index f6f9290..1af0016 100644 --- a/arch/arm/kvm/psci.c +++ b/arch/arm/kvm/psci.c @@ -182,6 +182,22 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) case PSCI_0_2_FN64_AFFINITY_INFO: val = kvm_psci_vcpu_affinity_info(vcpu); break; + case PSCI_0_2_FN_MIGRATE: + case PSCI_0_2_FN64_MIGRATE: + val = PSCI_RET_NOT_SUPPORTED; + break; + case PSCI_0_2_FN_MIGRATE_INFO_TYPE: + /* + * Trusted OS is MP hence does not require migration + * or + * Trusted OS is not present + */ + val = PSCI_0_2_TOS_MP; + break; + case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU: + case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU: + val = PSCI_RET_NOT_SUPPORTED; + break; case PSCI_0_2_FN_SYSTEM_OFF: kvm_psci_system_off(vcpu); val = PSCI_RET_SUCCESS; @@ -193,12 +209,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) ret = 0; break; case PSCI_0_2_FN_CPU_SUSPEND: - case PSCI_0_2_FN_MIGRATE: - case PSCI_0_2_FN_MIGRATE_INFO_TYPE: - case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU: case PSCI_0_2_FN64_CPU_SUSPEND: - case PSCI_0_2_FN64_MIGRATE: - case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU: val = PSCI_RET_NOT_SUPPORTED; break; default: