From patchwork Thu Oct 12 10:49:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harsh Prateek Bora X-Patchwork-Id: 13418847 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 4EB9DC41513 for ; Thu, 12 Oct 2023 10:52:30 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qqtHU-0001dI-9E; Thu, 12 Oct 2023 06:51:05 -0400 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 1qqtHG-0001Jd-0l; Thu, 12 Oct 2023 06:50:50 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqtGx-0004zk-3R; Thu, 12 Oct 2023 06:50:49 -0400 Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 39CAgadT024044; Thu, 12 Oct 2023 10:50:27 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=A/BCCSNNQndzwE+l1zpST7QV8n+rGngEtJ1Z15pqKps=; b=jC9c2OEGX6WdNwT5mayNa3OB4RCw2O7HvG2t7xcwl0DtnjgPpOvLd2kacHvr7Kp4sv+/ uq9KYG//+Vz+b1yUyjNOqL+cbLVJErWByuOmuTa+jXvO5AXMt6RzJmZ1nu++gnqm9aCC ErPQ2dyG+Yg3QF7MDp4y+FrmaPyGoKertUvnCe5lwWbiAiGOaKEUxQUkKSl+lmBf5YJE zDT2P2Ak5X6FwI2HlWWTb10NrgxeyLspgbTHhn6wDrbsnKuPqzv1cVCYPmEbecA3rT2w TPkClGyQ/u1gNUv/O0lhZ3Dz0/tQj7SPl19scjRG1Pq7Zx075o3syitEaYsZvbsMVnUi zw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3tpf9jrb6v-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Oct 2023 10:50:27 +0000 Received: from m0360083.ppops.net (m0360083.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 39CAgjtX024901; Thu, 12 Oct 2023 10:50:26 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 3tpf9jrb68-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Oct 2023 10:50:26 +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 39C8RUUw023021; Thu, 12 Oct 2023 10:50:24 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 3tkmc1xe90-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Oct 2023 10:50:24 +0000 Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 39CAoL2h21299716 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 12 Oct 2023 10:50:21 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7CCA320043; Thu, 12 Oct 2023 10:50:21 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5F16820040; Thu, 12 Oct 2023 10:50:19 +0000 (GMT) Received: from li-1901474c-32f3-11b2-a85c-fc5ff2c001f3.in.ibm.com (unknown [9.109.242.129]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 12 Oct 2023 10:50:19 +0000 (GMT) From: Harsh Prateek Bora To: npiggin@gmail.com, qemu-ppc@nongnu.org Cc: clegoate@redhat.com, qemu-devel@nongnu.org, mikey@neuling.org, vaibhav@linux.ibm.com, jniethe5@gmail.com, sbhat@linux.ibm.com, kconsul@linux.vnet.ibm.com, danielhb413@gmail.com Subject: [PATCH v2 07/14] spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls. Date: Thu, 12 Oct 2023 16:19:44 +0530 Message-Id: <20231012104951.194876-8-harshpb@linux.ibm.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20231012104951.194876-1-harshpb@linux.ibm.com> References: <20231012104951.194876-1-harshpb@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: nPR_mPCotDtN3sknHRHfyNlmSLHtH5el X-Proofpoint-GUID: a7q4Z7mMLRD4G0jx5ynXpAOE1Zhetl4_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-10-12_05,2023-10-12_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 bulkscore=0 adultscore=0 suspectscore=0 phishscore=0 impostorscore=0 spamscore=0 priorityscore=1501 malwarescore=0 mlxlogscore=580 lowpriorityscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2310120088 Received-SPF: pass client-ip=148.163.156.1; envelope-from=harshpb@linux.ibm.com; helo=mx0a-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, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=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 Introduce the nested PAPR hcalls: - H_GUEST_CREATE which is used to create and allocate resources for nested guest being created. - H_GUEST_DELETE which is used to delete and deallocate resources for the nested guest being deleted. It also supports deleting all nested guests at once using a deleteAll flag. Signed-off-by: Michael Neuling Signed-off-by: Harsh Prateek Bora --- hw/ppc/spapr_nested.c | 101 ++++++++++++++++++++++++++++++++++ include/hw/ppc/spapr.h | 4 +- include/hw/ppc/spapr_nested.h | 7 +++ 3 files changed, 111 insertions(+), 1 deletion(-) diff --git a/hw/ppc/spapr_nested.c b/hw/ppc/spapr_nested.c index c53b310f82..e95e70e20c 100644 --- a/hw/ppc/spapr_nested.c +++ b/hw/ppc/spapr_nested.c @@ -477,6 +477,105 @@ static target_ulong h_guest_set_capabilities(PowerPCCPU *cpu, } } +static void +destroy_guest_helper(gpointer value) +{ + struct SpaprMachineStateNestedGuest *guest = value; + g_free(guest); +} + +static target_ulong h_guest_create(PowerPCCPU *cpu, + SpaprMachineState *spapr, + target_ulong opcode, + target_ulong *args) +{ + CPUPPCState *env = &cpu->env; + target_ulong flags = args[0]; + target_ulong continue_token = args[1]; + uint64_t guestid; + int nguests = 0; + struct SpaprMachineStateNestedGuest *guest; + + if (flags) { /* don't handle any flags for now */ + return H_UNSUPPORTED_FLAG; + } + + if (continue_token != -1) { + return H_P2; + } + + if (!spapr->nested.capabilities_set) { + return H_STATE; + } + + if (!spapr->nested.guests) { + spapr->nested.guests = g_hash_table_new_full(NULL, + NULL, + NULL, + destroy_guest_helper); + } + + nguests = g_hash_table_size(spapr->nested.guests); + + if (nguests == PAPR_NESTED_GUEST_MAX) { + return H_NO_MEM; + } + + /* Lookup for available guestid */ + for (guestid = 1; guestid < PAPR_NESTED_GUEST_MAX; guestid++) { + if (!(g_hash_table_lookup(spapr->nested.guests, + GINT_TO_POINTER(guestid)))) { + break; + } + } + + if (guestid == PAPR_NESTED_GUEST_MAX) { + return H_NO_MEM; + } + + guest = g_try_new0(struct SpaprMachineStateNestedGuest, 1); + if (!guest) { + return H_NO_MEM; + } + + guest->pvr_logical = spapr->nested.pvr_base; + g_hash_table_insert(spapr->nested.guests, GINT_TO_POINTER(guestid), guest); + env->gpr[4] = guestid; + + return H_SUCCESS; +} + +static target_ulong h_guest_delete(PowerPCCPU *cpu, + SpaprMachineState *spapr, + target_ulong opcode, + target_ulong *args) +{ + target_ulong flags = args[0]; + target_ulong guestid = args[1]; + struct SpaprMachineStateNestedGuest *guest; + + /* + * handle flag deleteAllGuests, if set: + * guestid is ignored and all guests are deleted + * + */ + if (flags & ~H_GUEST_DELETE_ALL_FLAG) { + return H_UNSUPPORTED_FLAG; /* other flag bits reserved */ + } else if (flags & H_GUEST_DELETE_ALL_FLAG) { + g_hash_table_destroy(spapr->nested.guests); + return H_SUCCESS; + } + + guest = g_hash_table_lookup(spapr->nested.guests, GINT_TO_POINTER(guestid)); + if (!guest) { + return H_P2; + } + + g_hash_table_remove(spapr->nested.guests, GINT_TO_POINTER(guestid)); + + return H_SUCCESS; +} + void spapr_register_nested(void) { spapr_register_hypercall(KVMPPC_H_SET_PARTITION_TABLE, h_set_ptbl); @@ -490,6 +589,8 @@ void spapr_register_nested_papr(void) /* register hcalls here */ spapr_register_hypercall(H_GUEST_GET_CAPABILITIES, h_guest_get_capabilities); spapr_register_hypercall(H_GUEST_SET_CAPABILITIES, h_guest_set_capabilities); + spapr_register_hypercall(H_GUEST_CREATE , h_guest_create); + spapr_register_hypercall(H_GUEST_DELETE , h_guest_delete); } #else void spapr_exit_nested(PowerPCCPU *cpu, int excp) diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index c83dd76a84..fcc6f0a3d9 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -588,8 +588,10 @@ struct SpaprMachineState { #define H_WATCHDOG 0x45C #define H_GUEST_GET_CAPABILITIES 0x460 #define H_GUEST_SET_CAPABILITIES 0x464 +#define H_GUEST_CREATE 0x470 +#define H_GUEST_DELETE 0x488 -#define MAX_HCALL_OPCODE H_GUEST_SET_CAPABILITIES +#define MAX_HCALL_OPCODE H_GUEST_DELETE /* The hcalls above are standardized in PAPR and implemented by pHyp * as well. diff --git a/include/hw/ppc/spapr_nested.h b/include/hw/ppc/spapr_nested.h index b7586d06a4..f186005f00 100644 --- a/include/hw/ppc/spapr_nested.h +++ b/include/hw/ppc/spapr_nested.h @@ -11,8 +11,13 @@ typedef struct SpaprMachineStateNested { #define NESTED_API_PAPR 2 bool capabilities_set; uint32_t pvr_base; + GHashTable *guests; } SpaprMachineStateNested; +typedef struct SpaprMachineStateNestedGuest { + uint32_t pvr_logical; +} SpaprMachineStateNestedGuest; + /* Nested PAPR API related macros */ #define H_GUEST_CAPABILITIES_COPY_MEM 0x8000000000000000 #define H_GUEST_CAPABILITIES_P9_MODE 0x4000000000000000 @@ -20,6 +25,8 @@ typedef struct SpaprMachineStateNested { #define H_GUEST_CAP_COPY_MEM_BMAP 0 #define H_GUEST_CAP_P9_MODE_BMAP 1 #define H_GUEST_CAP_P10_MODE_BMAP 2 +#define PAPR_NESTED_GUEST_MAX 4096 +#define H_GUEST_DELETE_ALL_FLAG 0x8000000000000000ULL /* * Register state for entering a nested guest with H_ENTER_NESTED.