From patchwork Tue Mar 12 10:03:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aravinda Prasad X-Patchwork-Id: 10849059 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9CFA91390 for ; Tue, 12 Mar 2019 10:40:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8185D2936C for ; Tue, 12 Mar 2019 10:40:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7407229453; Tue, 12 Mar 2019 10:40:41 +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=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 691F62947F for ; Tue, 12 Mar 2019 10:40:39 +0000 (UTC) Received: from localhost ([127.0.0.1]:49351 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h3epq-0006pP-N8 for patchwork-qemu-devel@patchwork.kernel.org; Tue, 12 Mar 2019 06:40:38 -0400 Received: from eggs.gnu.org ([209.51.188.92]:37992) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h3eJQ-0005ds-I9 for qemu-devel@nongnu.org; Tue, 12 Mar 2019 06:07:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h3eGB-0004DF-PX for qemu-devel@nongnu.org; Tue, 12 Mar 2019 06:03:49 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:44698) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h3eGB-0004C1-Ej for qemu-devel@nongnu.org; Tue, 12 Mar 2019 06:03:47 -0400 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x2C9xjQo047597 for ; Tue, 12 Mar 2019 06:03:46 -0400 Received: from e16.ny.us.ibm.com (e16.ny.us.ibm.com [129.33.205.206]) by mx0a-001b2d01.pphosted.com with ESMTP id 2r68a21ukp-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 12 Mar 2019 06:03:45 -0400 Received: from localhost by e16.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 12 Mar 2019 10:03:42 -0000 Received: from b01ledav001.gho.pok.ibm.com (b01ledav001.gho.pok.ibm.com [9.57.199.106]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x2CA3fJ921037106 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 12 Mar 2019 10:03:41 GMT Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0854F28059; Tue, 12 Mar 2019 10:03:41 +0000 (GMT) Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9485F28058; Tue, 12 Mar 2019 10:03:38 +0000 (GMT) Received: from [127.0.1.1] (unknown [9.199.36.55]) by b01ledav001.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 12 Mar 2019 10:03:38 +0000 (GMT) From: Aravinda Prasad To: aik@au1.ibm.com, qemu-ppc@nongnu.org, qemu-devel@nongnu.org, david@gibson.dropbear.id.au Date: Tue, 12 Mar 2019 15:33:37 +0530 In-Reply-To: <155238487986.23844.8099659458599168067.stgit@aravinda> References: <155238487986.23844.8099659458599168067.stgit@aravinda> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19031210-0072-0000-0000-00000409704B X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010744; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000281; SDB=6.01173230; UDB=6.00613397; IPR=6.00953890; MB=3.00025943; MTD=3.00000008; XFM=3.00000015; UTC=2019-03-12 10:03:43 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19031210-0073-0000-0000-00004B7638DD Message-Id: <155238501724.23844.15798108899406581986.stgit@aravinda> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-03-12_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1903120072 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v6 5/6] ppc: spapr: Enable FWNMI capability X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: paulus@ozlabs.org, aravinda@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Enable the KVM capability KVM_CAP_PPC_FWNMI so that the KVM causes guest exit with NMI as exit reason when it encounters a machine check exception on the address belonging to a guest. Without this capability enabled, KVM redirects machine check exceptions to guest's 0x200 vector. Signed-off-by: Aravinda Prasad --- hw/ppc/spapr_rtas.c | 15 +++++++++++++++ target/ppc/kvm.c | 14 ++++++++++++++ target/ppc/kvm_ppc.h | 6 ++++++ 3 files changed, 35 insertions(+) diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c index 0c2aa0d..aadd241 100644 --- a/hw/ppc/spapr_rtas.c +++ b/hw/ppc/spapr_rtas.c @@ -49,6 +49,7 @@ #include "hw/ppc/fdt.h" #include "target/ppc/mmu-hash64.h" #include "target/ppc/mmu-book3s-v3.h" +#include "kvm_ppc.h" static void rtas_display_character(PowerPCCPU *cpu, sPAPRMachineState *spapr, uint32_t token, uint32_t nargs, @@ -354,6 +355,20 @@ static void rtas_ibm_nmi_register(PowerPCCPU *cpu, target_ulong args, uint32_t nret, target_ulong rets) { + int ret; + + ret = kvmppc_fwnmi_enable(cpu); + + if (ret == 1) { + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); + return; + } + + if (ret < 0) { + rtas_st(rets, 0, RTAS_OUT_HW_ERROR); + return; + } + spapr->mc_reset = 0; spapr->guest_machine_check_addr = rtas_ld(args, 1); rtas_st(rets, 0, RTAS_OUT_SUCCESS); diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index ba7738e..8786cec 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -91,6 +91,7 @@ static int cap_ppc_safe_cache; static int cap_ppc_safe_bounds_check; static int cap_ppc_safe_indirect_branch; static int cap_ppc_nested_kvm_hv; +static int cap_ppc_fwnmi; static uint32_t debug_inst_opcode; @@ -151,6 +152,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) cap_resize_hpt = kvm_vm_check_extension(s, KVM_CAP_SPAPR_RESIZE_HPT); kvmppc_get_cpu_characteristics(s); cap_ppc_nested_kvm_hv = kvm_vm_check_extension(s, KVM_CAP_PPC_NESTED_HV); + cap_ppc_fwnmi = kvm_check_extension(s, KVM_CAP_PPC_FWNMI); /* * Note: setting it to false because there is not such capability * in KVM at this moment. @@ -2049,6 +2051,18 @@ void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy) } } +int kvmppc_fwnmi_enable(PowerPCCPU *cpu) +{ + CPUState *cs = CPU(cpu); + + if (!cap_ppc_fwnmi) { + return 1; + } + + return kvm_vcpu_enable_cap(cs, KVM_CAP_PPC_FWNMI, 0); +} + + int kvmppc_smt_threads(void) { return cap_ppc_smt ? cap_ppc_smt : 1; diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h index 0f40222..3645eb4 100644 --- a/target/ppc/kvm_ppc.h +++ b/target/ppc/kvm_ppc.h @@ -26,6 +26,7 @@ void kvmppc_enable_clear_ref_mod_hcalls(void); void kvmppc_set_papr(PowerPCCPU *cpu); int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr); void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy); +int kvmppc_fwnmi_enable(PowerPCCPU *cpu); int kvmppc_smt_threads(void); void kvmppc_hint_smt_possible(Error **errp); int kvmppc_set_smt_threads(int smt); @@ -150,6 +151,11 @@ static inline void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy) { } +int kvmppc_fwnmi_enable(PowerPCCPU *cpu) +{ + return 1; +} + static inline int kvmppc_smt_threads(void) { return 1;