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=-9.0 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 62A80C43381 for ; Tue, 19 Mar 2019 08:31:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3BF7B20828 for ; Tue, 19 Mar 2019 08:31:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727696AbfCSIbt (ORCPT ); Tue, 19 Mar 2019 04:31:49 -0400 Received: from foss.arm.com ([217.140.101.70]:47070 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725934AbfCSIbs (ORCPT ); Tue, 19 Mar 2019 04:31:48 -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 05050174E; Tue, 19 Mar 2019 01:31:48 -0700 (PDT) Received: from a075553-lin.blr.arm.com (a075553-lin.blr.arm.com [10.162.0.144]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C142A3F59C; Tue, 19 Mar 2019 01:31:43 -0700 (PDT) From: Amit Daniel Kachhap To: linux-arm-kernel@lists.infradead.org Cc: Christoffer Dall , Marc Zyngier , Catalin Marinas , Will Deacon , Andrew Jones , Dave Martin , Ramana Radhakrishnan , kvmarm@lists.cs.columbia.edu, Kristina Martsenko , linux-kernel@vger.kernel.org, Amit Daniel Kachhap , Mark Rutland , James Morse , Julien Thierry Subject: [PATCH v7 8/10] KVM: arm64: Add capability to advertise ptrauth for guest Date: Tue, 19 Mar 2019 14:00:41 +0530 Message-Id: <1552984243-7689-9-git-send-email-amit.kachhap@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1552984243-7689-1-git-send-email-amit.kachhap@arm.com> References: <1552984243-7689-1-git-send-email-amit.kachhap@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch advertises the capability of pointer authentication when system supports pointer authentication and VHE mode present. Signed-off-by: Amit Daniel Kachhap Cc: Mark Rutland Cc: Marc Zyngier Cc: Christoffer Dall Cc: kvmarm@lists.cs.columbia.edu --- arch/arm64/kvm/reset.c | 4 ++++ include/uapi/linux/kvm.h | 1 + 2 files changed, 5 insertions(+) diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c index 00f0639..a3b269e 100644 --- a/arch/arm64/kvm/reset.c +++ b/arch/arm64/kvm/reset.c @@ -92,6 +92,10 @@ int kvm_arch_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_ARM_VM_IPA_SIZE: r = kvm_ipa_limit; break; + case KVM_CAP_ARM_PTRAUTH: + r = has_vhe() && system_supports_address_auth() && + system_supports_generic_auth(); + break; default: r = 0; } diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 6d4ea4b..a553477 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -988,6 +988,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_ARM_VM_IPA_SIZE 165 #define KVM_CAP_MANUAL_DIRTY_LOG_PROTECT 166 #define KVM_CAP_HYPERV_CPUID 167 +#define KVM_CAP_ARM_PTRAUTH 168 #ifdef KVM_CAP_IRQ_ROUTING -- 2.7.4