From patchwork Wed Jul 18 09:19:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suzuki K Poulose X-Patchwork-Id: 10531699 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 07F446020A for ; Wed, 18 Jul 2018 09:20:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 02BBB291B9 for ; Wed, 18 Jul 2018 09:20:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0111C291CE; Wed, 18 Jul 2018 09:20:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 95AB6291B9 for ; Wed, 18 Jul 2018 09:20:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731086AbeGRJ50 (ORCPT ); Wed, 18 Jul 2018 05:57:26 -0400 Received: from foss.arm.com ([217.140.101.70]:58362 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731069AbeGRJ50 (ORCPT ); Wed, 18 Jul 2018 05:57:26 -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 E3F8F7A9; Wed, 18 Jul 2018 02:20:28 -0700 (PDT) Received: from en101.cambridge.arm.com (en101.cambridge.arm.com [10.1.206.73]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 8D8063F318; Wed, 18 Jul 2018 02:20:26 -0700 (PDT) From: Suzuki K Poulose To: linux-arm-kernel@lists.infradead.org Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, marc.zyngier@arm.com, cdall@kernel.org, eric.auger@redhat.com, julien.grall@arm.com, dave.martin@arm.com, pbonzini@redhat.com, rkrcmar@redhat.com, will.deacon@arm.com, catalin.marinas@arm.com, james.morse@arm.com, Suzuki K Poulose Subject: [kvmtool PATCH v4 24/24] kvmtool: arm: Add support for creating VM with PA size Date: Wed, 18 Jul 2018 10:19:07 +0100 Message-Id: <1531905547-25478-25-git-send-email-suzuki.poulose@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531905547-25478-1-git-send-email-suzuki.poulose@arm.com> References: <1531905547-25478-1-git-send-email-suzuki.poulose@arm.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 | 22 ++++++++++++++++++++++ 2 files changed, 27 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 5701d41..b7c3382 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 +20,26 @@ struct kvm_ext kvm_req_ext[] = { { 0, 0 }, }; +#ifndef KVM_CAP_ARM_VM_MAX_PHYS_SHIFT +#define KVM_CAP_ARM_VM_MAX_PHYS_SHIFT 156 +#endif + +void kvm__arch_init_hyp(struct kvm *kvm) +{ + int max_ipa; + + if (!kvm->cfg.arch.phys_shift || kvm->cfg.arch.phys_shift == 40) + return; + max_ipa = ioctl(kvm->sys_fd, + KVM_CHECK_EXTENSION, KVM_CAP_ARM_VM_MAX_PHYS_SHIFT); + if (!max_ipa) + die("Kernel doesn't support IPA size configuration\n"); + if (kvm->cfg.arch.phys_shift > max_ipa) + die("Requested PA size (%u) is not supported by the host (%ubits)\n", + kvm->cfg.arch.phys_shift, max_ipa); + kvm_arm_type = kvm->cfg.arch.phys_shift; +} + bool kvm__arch_cpu_supports_vm(void) { /* The KVM capability check is enough. */