From patchwork Wed Feb 10 18:09:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 8273841 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 24A1EBEEE5 for ; Wed, 10 Feb 2016 18:11:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 752DE203AD for ; Wed, 10 Feb 2016 18:11:26 +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 C42EF20394 for ; Wed, 10 Feb 2016 18:11:25 +0000 (UTC) Received: from localhost ([::1]:41684 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aTZEb-0002EC-4k for patchwork-qemu-devel@patchwork.kernel.org; Wed, 10 Feb 2016 13:11:25 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55727) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aTZCb-0007eE-Oz for qemu-devel@nongnu.org; Wed, 10 Feb 2016 13:09:22 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aTZCX-0004w9-CM for qemu-devel@nongnu.org; Wed, 10 Feb 2016 13:09:21 -0500 Received: from mx1.redhat.com ([209.132.183.28]:35836) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aTZCX-0004w5-70; Wed, 10 Feb 2016 13:09:17 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id E66B1A4521; Wed, 10 Feb 2016 18:09:16 +0000 (UTC) Received: from thh440s.fritz.box (vpn1-7-179.ams2.redhat.com [10.36.7.179]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u1AI9Csk015467; Wed, 10 Feb 2016 13:09:15 -0500 From: Thomas Huth To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Date: Wed, 10 Feb 2016 19:09:09 +0100 Message-Id: <1455127752-17293-2-git-send-email-thuth@redhat.com> In-Reply-To: <1455127752-17293-1-git-send-email-thuth@redhat.com> References: <1455127752-17293-1-git-send-email-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: qemu-devel@nongnu.org, laurent@vivier.eu Subject: [Qemu-devel] [PATCH 1/4] 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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 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 --- 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..58103ef 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) +{ + CPUState *cs = CPU(cpu); + + set_spr(cs, SPR_SPRG0, args[0], -1L); + 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); }