From patchwork Thu Feb 18 04:18:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Gibson X-Patchwork-Id: 8345441 Return-Path: X-Original-To: patchwork-qemu-devel@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 CDCA8C0553 for ; Thu, 18 Feb 2016 04:23:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2ACA320221 for ; Thu, 18 Feb 2016 04:23:50 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8393120204 for ; Thu, 18 Feb 2016 04:23:49 +0000 (UTC) Received: from localhost ([::1]:36561 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWG84-0002fn-Rf for patchwork-qemu-devel@patchwork.kernel.org; Wed, 17 Feb 2016 23:23:48 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46703) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWG2J-00007n-5p for qemu-devel@nongnu.org; Wed, 17 Feb 2016 23:17:53 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aWG2G-0008Jj-W9 for qemu-devel@nongnu.org; Wed, 17 Feb 2016 23:17:51 -0500 Received: from ozlabs.org ([2401:3900:2:1::2]:48672) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWG2G-0008IP-IJ; Wed, 17 Feb 2016 23:17:48 -0500 Received: by ozlabs.org (Postfix, from userid 1007) id 0407C140778; Thu, 18 Feb 2016 15:17:46 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1455769067; bh=OakSf0ELJ91bGq74Apv+CtIIhcHDnYY1grhsIon/S9k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PVnoiwc0LrDcX+GY8Chm2q4TRSY1IzvvarTVH0fuLc0pABZtfxtsU51RGGyH/SXbd h7MqTCmDzZtcT3U5uXGySEXIKQX7PLZ2PCkZsCbS3tEZMrt55xklxVjGYuGRKCYbha hYQ/ZEWIlZ8vqdoRvRQRSCswonBU2vaek/qirkHY= From: David Gibson To: peter.maydell@linaro.org Date: Thu, 18 Feb 2016 15:18:30 +1100 Message-Id: <1455769127-26005-10-git-send-email-david@gibson.dropbear.id.au> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1455769127-26005-1-git-send-email-david@gibson.dropbear.id.au> References: <1455769127-26005-1-git-send-email-david@gibson.dropbear.id.au> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2401:3900:2:1::2 Cc: Thomas Huth , aik@ozlabs.ru, mark.cave-ayland@ilande.co.uk, agraf@suse.de, qemu-devel@nongnu.org, qemu-ppc@nongnu.org, David Gibson Subject: [Qemu-devel] [PULL 09/26] hw/ppc/spapr: Add h_set_sprg0 hypercall X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham 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 From: Thomas Huth This is a very simple hypercall that only sets up the SPRG0 register for the guest (since writing to SPRG0 was only permitted to the hypervisor in older versions of the PowerISA). Signed-off-by: Thomas Huth Signed-off-by: David Gibson --- hw/ppc/spapr_hcall.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 12f8c33..63f41ec 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -332,6 +332,15 @@ static target_ulong h_read(PowerPCCPU *cpu, sPAPRMachineState *spapr, return H_SUCCESS; } +static target_ulong h_set_sprg0(PowerPCCPU *cpu, sPAPRMachineState *spapr, + target_ulong opcode, target_ulong *args) +{ + cpu_synchronize_state(CPU(cpu)); + cpu->env.spr[SPR_SPRG0] = args[0]; + + return H_SUCCESS; +} + static target_ulong h_set_dabr(PowerPCCPU *cpu, sPAPRMachineState *spapr, target_ulong opcode, target_ulong *args) { @@ -997,6 +1006,10 @@ static void hypercall_register_types(void) spapr_register_hypercall(H_REGISTER_VPA, h_register_vpa); spapr_register_hypercall(H_CEDE, h_cede); + /* processor register resource access h-calls */ + spapr_register_hypercall(H_SET_SPRG0, h_set_sprg0); + spapr_register_hypercall(H_SET_MODE, h_set_mode); + /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenciate * here between the "CI" and the "CACHE" variants, they will use whatever * mapping attributes qemu is using. When using KVM, the kernel will @@ -1013,8 +1026,6 @@ static void hypercall_register_types(void) /* qemu/KVM-PPC specific hcalls */ spapr_register_hypercall(KVMPPC_H_RTAS, h_rtas); - spapr_register_hypercall(H_SET_MODE, h_set_mode); - /* ibm,client-architecture-support support */ spapr_register_hypercall(KVMPPC_H_CAS, h_client_architecture_support); }