From patchwork Tue Feb 20 08:35:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harsh Prateek Bora X-Patchwork-Id: 13563591 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 13D52C54764 for ; Tue, 20 Feb 2024 08:38:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rcLcL-00032l-9D; Tue, 20 Feb 2024 03:36:45 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rcLcE-0002yy-C3; Tue, 20 Feb 2024 03:36:38 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rcLcC-00055m-Ic; Tue, 20 Feb 2024 03:36:38 -0500 Received: from pps.filterd (m0353724.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 41K67728022148; Tue, 20 Feb 2024 08:36:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=iOmEP+AvDbN6bdfbow9GVdzaZY/VNPtiZH/oAOZXjFs=; b=hMgFSnfzK0nH7stZyGZDDiLTo1fR5EhynEfRAJISlCWJ07k4V6lAfDUjIG7QdF+/vXli k9nO3SAAtYRkgOUXi12Tra0NmiY0NdxLp+OO6LIdZbwOkX3xcL+9MCTa3BvtK7+oIwNV V/5nC7KpAi4e7mm7nexWL7aU/YD9wmE8Jiuj2MBAX+Yez5b9Ss5tnSMgQs6ZxjKWwZBq 1DZWs4Bu8j2CToo4roC2yGJJhMQPrsEcKyvPz3LU+SYSk6P/Tg6o5WxRL0TCxD5Ieziu ilNHg8+KRBpNqQ3fZeCUQ5qRYnc1/+nV3Sl0NnW8Wf0XwD2LF6wr2wMzGsaG37Fzu5XV Kw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3wcnp7459m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 20 Feb 2024 08:36:32 +0000 Received: from m0353724.ppops.net (m0353724.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 41K8WHLs024037; Tue, 20 Feb 2024 08:36:32 GMT Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3wcnp7459c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 20 Feb 2024 08:36:32 +0000 Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 41K6s8xq014347; Tue, 20 Feb 2024 08:36:31 GMT Received: from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 3wb9u2ee0r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 20 Feb 2024 08:36:31 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 41K8aQrp24380076 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 20 Feb 2024 08:36:28 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2C5F02004F; Tue, 20 Feb 2024 08:36:26 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 86BA720040; Tue, 20 Feb 2024 08:36:24 +0000 (GMT) Received: from li-1901474c-32f3-11b2-a85c-fc5ff2c001f3.in.ibm.com (unknown [9.109.243.35]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 20 Feb 2024 08:36:24 +0000 (GMT) From: Harsh Prateek Bora To: npiggin@gmail.com, qemu-ppc@nongnu.org Cc: clegoate@redhat.com, mikey@neuling.org, amachhiw@linux.vnet.ibm.com, vaibhav@linux.ibm.com, sbhat@linux.ibm.com, danielhb413@gmail.com, qemu-devel@nongnu.org Subject: [PATCH v4 04/15] spapr: nested: keep nested-hv related code restricted to its API. Date: Tue, 20 Feb 2024 14:05:58 +0530 Message-Id: <20240220083609.748325-5-harshpb@linux.ibm.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240220083609.748325-1-harshpb@linux.ibm.com> References: <20240220083609.748325-1-harshpb@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: dbo-WFnyNbLr8TqyRL9eDPXhEI3U-rfQ X-Proofpoint-ORIG-GUID: P45rGD_-1bC-CUyualXUdS-EFAgz9K8n X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-20_06,2024-02-19_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=951 phishscore=0 mlxscore=0 adultscore=0 bulkscore=0 suspectscore=0 spamscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402200060 Received-SPF: pass client-ip=148.163.158.5; envelope-from=harshpb@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org spapr_exit_nested and spapr_get_pate_nested_hv contains code which is specific to nested-hv API. Isolating code flows based on API helps extending it to be used with different API as well. Signed-off-by: Harsh Prateek Bora Suggested-by: Nicholas Piggin --- include/hw/ppc/spapr_nested.h | 4 ++++ hw/ppc/spapr.c | 7 ++++++- hw/ppc/spapr_caps.c | 1 + hw/ppc/spapr_nested.c | 27 ++++++++++++++++++++++++--- 4 files changed, 35 insertions(+), 4 deletions(-) diff --git a/include/hw/ppc/spapr_nested.h b/include/hw/ppc/spapr_nested.h index 2488ea98da..3f07c81c3d 100644 --- a/include/hw/ppc/spapr_nested.h +++ b/include/hw/ppc/spapr_nested.h @@ -5,6 +5,8 @@ typedef struct SpaprMachineStateNested { uint64_t ptcr; + uint8_t api; +#define NESTED_API_KVM_HV 1 } SpaprMachineStateNested; /* @@ -103,4 +105,6 @@ void spapr_exit_nested(PowerPCCPU *cpu, int excp); typedef struct SpaprMachineState SpaprMachineState; bool spapr_get_pate_nested_hv(SpaprMachineState *spapr, PowerPCCPU *cpu, target_ulong lpid, ppc_v3_pate_t *entry); +void spapr_nested_init(SpaprMachineState *spapr); +uint8_t spapr_nested_api(SpaprMachineState *spapr); #endif /* HW_SPAPR_NESTED_H */ diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 97b69c0e42..51a1be027a 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1376,7 +1376,11 @@ static bool spapr_get_pate(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu, entry->dw1 = spapr->patb_entry; return true; } else { - return spapr_get_pate_nested_hv(spapr, cpu, lpid, entry); + assert(spapr_nested_api(spapr)); + if (spapr_nested_api(spapr) == NESTED_API_KVM_HV) { + return spapr_get_pate_nested_hv(spapr, cpu, lpid, entry); + } + return false; } } @@ -3443,6 +3447,7 @@ static void spapr_instance_init(Object *obj) spapr_get_host_serial, spapr_set_host_serial); object_property_set_description(obj, "host-serial", "Host serial number to advertise in guest device tree"); + spapr_nested_init(spapr); } static void spapr_machine_finalizefn(Object *obj) diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index f0c2f4de78..721ddad23b 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -487,6 +487,7 @@ static void cap_nested_kvm_hv_apply(SpaprMachineState *spapr, error_append_hint(errp, "Try appending -machine cap-nested-hv=off " "or use threads=1 with -smp\n"); } + spapr->nested.api = NESTED_API_KVM_HV; spapr_unregister_nested_hv(); /* reset across reboots */ spapr_register_nested_hv(); } diff --git a/hw/ppc/spapr_nested.c b/hw/ppc/spapr_nested.c index e43e867295..9096dd96a4 100644 --- a/hw/ppc/spapr_nested.c +++ b/hw/ppc/spapr_nested.c @@ -8,6 +8,16 @@ #include "hw/ppc/spapr_nested.h" #include "mmu-book3s-v3.h" +void spapr_nested_init(SpaprMachineState *spapr) +{ + spapr->nested.api = 0; +} + +uint8_t spapr_nested_api(SpaprMachineState *spapr) +{ + return spapr->nested.api; +} + #ifdef CONFIG_TCG bool spapr_get_pate_nested_hv(SpaprMachineState *spapr, PowerPCCPU *cpu, @@ -302,7 +312,7 @@ static target_ulong h_enter_nested(PowerPCCPU *cpu, return env->gpr[3]; } -void spapr_exit_nested(PowerPCCPU *cpu, int excp) +static void spapr_exit_nested_hv(PowerPCCPU *cpu, int excp) { CPUPPCState *env = &cpu->env; SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); @@ -314,8 +324,6 @@ void spapr_exit_nested(PowerPCCPU *cpu, int excp) struct kvmppc_pt_regs *regs; hwaddr len; - assert(spapr_cpu->in_nested); - nested_save_state(&l2_state, cpu); hsrr0 = env->spr[SPR_HSRR0]; hsrr1 = env->spr[SPR_HSRR1]; @@ -405,6 +413,19 @@ void spapr_exit_nested(PowerPCCPU *cpu, int excp) address_space_unmap(CPU(cpu)->as, regs, len, len, true); } +void spapr_exit_nested(PowerPCCPU *cpu, int excp) +{ + SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); + SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); + + assert(spapr_cpu->in_nested); + if (spapr_nested_api(spapr) == NESTED_API_KVM_HV) { + spapr_exit_nested_hv(cpu, excp); + } else { + g_assert_not_reached(); + } +} + void spapr_register_nested_hv(void) { spapr_register_hypercall(KVMPPC_H_SET_PARTITION_TABLE, h_set_ptbl);