From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6F1CC43382 for ; Wed, 26 Sep 2018 16:34:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 99BBE2152E for ; Wed, 26 Sep 2018 16:34:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 99BBE2152E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729147AbeIZWsO (ORCPT ); Wed, 26 Sep 2018 18:48:14 -0400 Received: from foss.arm.com ([217.140.101.70]:50236 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727366AbeIZWsO (ORCPT ); Wed, 26 Sep 2018 18:48:14 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 64E95237B; Wed, 26 Sep 2018 09:34:28 -0700 (PDT) Received: from en101.Emea.Arm.com (en101.emea.arm.com [10.4.13.23]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E94493F5B3; Wed, 26 Sep 2018 09:34:25 -0700 (PDT) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, marc.zyngier@arm.com, cdall@kernel.org, eric.auger@redhat.com, suzuki.poulose@arm.com, will.deacon@arm.com, dave.martin@arm.com, peter.maydell@linaro.org, pbonzini@redhat.com, rkrcmar@redhat.com, julien.grall@arm.com, linux-kernel@vger.kernel.org Subject: [kvmtool PATCH v6 22/18] kvmtool: arm: Add support for creating VM with PA size Date: Wed, 26 Sep 2018 17:32:58 +0100 Message-Id: <20180926163258.20218-23-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20180926163258.20218-1-suzuki.poulose@arm.com> References: <20180926163258.20218-1-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Specify the physical size for the VM encoded in the vm type. Signed-off-by: Suzuki K Poulose --- arm/include/arm-common/kvm-arch.h | 6 +++++- arm/kvm.c | 32 +++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+), 1 deletion(-) diff --git a/arm/include/arm-common/kvm-arch.h b/arm/include/arm-common/kvm-arch.h index b29b4b1..d77f3ac 100644 --- a/arm/include/arm-common/kvm-arch.h +++ b/arm/include/arm-common/kvm-arch.h @@ -44,7 +44,11 @@ #define KVM_IRQ_OFFSET GIC_SPI_IRQ_BASE -#define KVM_VM_TYPE 0 +extern unsigned long kvm_arm_type; +extern void kvm__arch_init_hyp(struct kvm *kvm); + +#define KVM_VM_TYPE kvm_arm_type +#define kvm__arch_init_hyp kvm__arch_init_hyp #define VIRTIO_DEFAULT_TRANS(kvm) \ ((kvm)->cfg.arch.virtio_trans_pci ? VIRTIO_PCI : VIRTIO_MMIO) diff --git a/arm/kvm.c b/arm/kvm.c index eac2ad2..c8db6b3 100644 --- a/arm/kvm.c +++ b/arm/kvm.c @@ -11,6 +11,8 @@ #include #include +unsigned long kvm_arm_type; + struct kvm_ext kvm_req_ext[] = { { DEFINE_KVM_EXT(KVM_CAP_IRQCHIP) }, { DEFINE_KVM_EXT(KVM_CAP_ONE_REG) }, @@ -18,6 +20,36 @@ struct kvm_ext kvm_req_ext[] = { { 0, 0 }, }; +#ifndef KVM_CAP_ARM_VM_IPA_SIZE +#define KVM_CAP_ARM_VM_IPA_SIZE 159 +#endif + +#ifndef KVM_VM_TYPE_ARM_IPA_SIZE +#define KVM_VM_TYPE_ARM_IPA_SIZE_MASK 0xffULL +#define KVM_VM_TYPE_ARM_IPA_SIZE(x) \ + ((x) & KVM_VM_TYPE_ARM_IPA_SIZE_MASK) +#endif + +void kvm__arch_init_hyp(struct kvm *kvm) +{ + int max_ipa; + + if (!kvm->cfg.arch.phys_shift) + kvm->cfg.arch.phys_shift = 40; + if (kvm->cfg.arch.phys_shift == 40) + return; + max_ipa = ioctl(kvm->sys_fd, + KVM_CHECK_EXTENSION, KVM_CAP_ARM_VM_IPA_SIZE); + if (!max_ipa) + die("Kernel doesn't support IPA size configuration\n"); + if ((kvm->cfg.arch.phys_shift > max_ipa) || + (kvm->cfg.arch.phys_shift < 32)) + die("Requested PA size (%u) is not supported by the host" + " [32 - %u]bit\n", + kvm->cfg.arch.phys_shift, max_ipa); + kvm_arm_type = KVM_VM_TYPE_ARM_IPA_SIZE(kvm->cfg.arch.phys_shift); +} + bool kvm__arch_cpu_supports_vm(void) { /* The KVM capability check is enough. */ -- 2.19.0