From patchwork Wed Apr 2 10:42:24 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 3928251 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 7904ABF540 for ; Wed, 2 Apr 2014 11:21:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AB69020213 for ; Wed, 2 Apr 2014 11:21:22 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (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 B1C422026F for ; Wed, 2 Apr 2014 11:21:21 +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 1WVIfQ-000885-1g; Wed, 02 Apr 2014 10:45:13 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WVIeV-0007e1-Oo; Wed, 02 Apr 2014 10:44:15 +0000 Received: from mail-pb0-f50.google.com ([209.85.160.50]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WVIeL-0007Zp-Rl for linux-arm-kernel@lists.infradead.org; Wed, 02 Apr 2014 10:44:07 +0000 Received: by mail-pb0-f50.google.com with SMTP id md12so11342152pbc.37 for ; Wed, 02 Apr 2014 03:43:44 -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=kS9C3KyZ2xUX78eI92BOD+h55QSwey7PEFqjF+MXpEo=; b=RUBMCPh+4r2MVPttFHc3StT0kzvygOAf+6iFaYeLM2swUkuCvFytegZoMx0dD1x9e+ BODE4iqNWhkcGyElXtfACBO9DnvZJN3cmQi7Fe+aN9uHInKb9uC6qHDOGm3M7+swQVI3 1m4U0njk7B1GR/3lNox8hhq6FQ221poiJwgPFns0K0BmpSIPDyc9GLhFB6GIpjLAobYF hhgQM/edO2mslbeKp/DRj9g0X3gBgqsGk/FZXQKEe8/5RXVnNpZts4Mh1DfxxQ+JVG6X fsPV1L/MXA2Zs5G92uiK7uaj6qA8YUGRP/nKkf7QWzmEUzZt59DHN2SruLP9NHHMeoLJ 7OdA== X-Gm-Message-State: ALoCoQkXnfNhCIyWAlZC7C479hZTOkwph9EIHOx63i+BUx4J1FvnPEMtNi27fLrSxDA1XVUyFXkg X-Received: by 10.66.149.231 with SMTP id ud7mr37487927pab.8.1396435424442; Wed, 02 Apr 2014 03:43:44 -0700 (PDT) Received: from pnqlab006.amcc.com ([182.73.239.130]) by mx.google.com with ESMTPSA id tk5sm3573403pbc.63.2014.04.02.03.43.38 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 02 Apr 2014 03:43:43 -0700 (PDT) From: Anup Patel To: kvmarm@lists.cs.columbia.edu Subject: [PATCH v7 09/12] ARM/ARM64: KVM: Emulate PSCI v0.2 MIGRATE_INFO_TYPE and related functions Date: Wed, 2 Apr 2014 16:12:24 +0530 Message-Id: <1396435347-20056-10-git-send-email-anup.patel@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1396435347-20056-1-git-send-email-anup.patel@linaro.org> References: <1396435347-20056-1-git-send-email-anup.patel@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140402_064406_015407_92F5CA70 X-CRM114-Status: GOOD ( 11.10 ) X-Spam-Score: -2.6 (--) 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=-4.8 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 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 either not present or does not require migration 3. MIGRATE_INFO_UP_CPU - Returns "Not Supported" Signed-off-by: Anup Patel Signed-off-by: Pranavkumar Sawargaonkar Reviewed-by: Christoffer Dall Acked-by: Rob Herring --- arch/arm/kvm/psci.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c index 5fccf0b..d8335da 100644 --- a/arch/arm/kvm/psci.c +++ b/arch/arm/kvm/psci.c @@ -197,6 +197,21 @@ 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 either not present or + * does not require migration + */ + val = 2; + 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; @@ -208,12 +223,7 @@ 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: