From patchwork Mon Dec 7 10:53:34 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 7782121 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A13FABEEE1 for ; Mon, 7 Dec 2015 10:54:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DC1BF2027D for ; Mon, 7 Dec 2015 10:54:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C4F020103 for ; Mon, 7 Dec 2015 10:54:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932171AbbLGKya (ORCPT ); Mon, 7 Dec 2015 05:54:30 -0500 Received: from foss.arm.com ([217.140.101.70]:35864 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755972AbbLGKyY (ORCPT ); Mon, 7 Dec 2015 05:54:24 -0500 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 D18AC5F9; Mon, 7 Dec 2015 02:54:02 -0800 (PST) Received: from approximate.cambridge.arm.com (approximate.cambridge.arm.com [10.1.209.24]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 9A6893F529; Mon, 7 Dec 2015 02:54:22 -0800 (PST) From: Marc Zyngier To: Christoffer Dall Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Steve Capper , Ard Biesheuvel , Mark Rutland , Catalin Marinas , linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Subject: [PATCH v3 18/22] arm64: KVM: Map the kernel RO section into HYP Date: Mon, 7 Dec 2015 10:53:34 +0000 Message-Id: <1449485618-9443-19-git-send-email-marc.zyngier@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1449485618-9443-1-git-send-email-marc.zyngier@arm.com> References: <1449485618-9443-1-git-send-email-marc.zyngier@arm.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 In order to run C code in HYP, we must make sure that the kernel's RO section is mapped into HYP (otherwise things break badly). Signed-off-by: Marc Zyngier Acked-by: Christoffer Dall --- arch/arm/kvm/arm.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index e06fd29..d80aefe 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -44,6 +44,7 @@ #include #include #include +#include #ifdef REQUIRES_VIRT __asm__(".arch_extension virt"); @@ -1067,6 +1068,12 @@ static int init_hyp_mode(void) goto out_free_mappings; } + err = create_hyp_mappings(__start_rodata, __end_rodata); + if (err) { + kvm_err("Cannot map rodata section\n"); + goto out_free_mappings; + } + /* * Map the Hyp stack pages */