From patchwork Thu Jan 18 05:24:30 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: 13522378 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 D38AFC47077 for ; Thu, 18 Jan 2024 05:28:29 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rQKuE-0006RN-Dg; Thu, 18 Jan 2024 00:25:34 -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 1rQKtx-0006LA-9B; Thu, 18 Jan 2024 00:25:17 -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 1rQKtu-0006Zu-5x; Thu, 18 Jan 2024 00:25:17 -0500 Received: from pps.filterd (m0356516.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 40I5Fma8010662; Thu, 18 Jan 2024 05:25:10 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=JFqYtlh3ZnRchRdc4uetXL5jcE04VUHLPgTyGulm6+k=; b=op4KnvJdF3aieKE3f8NKXyRfIBf66JWCQWwTlB+Vxfhq2iyxq7gBrBKU3bLjg4AKjL2H PQf9LRiewtuX2asWn4rZ1CLY5Bhd9CXKyQfq/khA8qsxvRA6bKxq94Fj0PPobyZo+2iA hF+Y18Xuu5hVMWAtap2YaIb4XRJBwo006kqD2reVOTjlyNImzZMhIaWLLz8H7YZxwoDJ 61hzY+9r27d+f/tdhSoyVyM1o/Vn8sIcyPpzcZKiDGnFWT9TTNZ5QF0s22jR6CVphYx4 KBB5XU8WW6uNFiW1DoNEFg3dkk91+MYhzrjs1VMVX0NUhsWuS4C8G6un9speDEeF6Gzq hA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3vpwpbg8r7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Jan 2024 05:25:10 +0000 Received: from m0356516.ppops.net (m0356516.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 40I5OHA6012938; Thu, 18 Jan 2024 05:25:09 GMT Received: from ppma13.dal12v.mail.ibm.com (dd.9e.1632.ip4.static.sl-reverse.com [50.22.158.221]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3vpwpbg8qp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Jan 2024 05:25:09 +0000 Received: from pps.filterd (ppma13.dal12v.mail.ibm.com [127.0.0.1]) by ppma13.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 40I3Jqw0030434; Thu, 18 Jan 2024 05:25:09 GMT Received: from smtprelay07.fra02v.mail.ibm.com ([9.218.2.229]) by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 3vm72k965n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Jan 2024 05:25:08 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay07.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 40I5P6Ub23003806 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 18 Jan 2024 05:25:06 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 179C92004B; Thu, 18 Jan 2024 05:25:06 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 77A8D20043; Thu, 18 Jan 2024 05:25:04 +0000 (GMT) Received: from li-1901474c-32f3-11b2-a85c-fc5ff2c001f3.in.ibm.com (unknown [9.109.243.35]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 18 Jan 2024 05:25:04 +0000 (GMT) From: Harsh Prateek Bora To: npiggin@gmail.com, qemu-ppc@nongnu.org Cc: qemu-devel@nongnu.org, clegoate@redhat.com, mikey@neuling.org, amachhiw@linux.vnet.ibm.com, vaibhav@linux.ibm.com, sbhat@linux.ibm.com, danielhb413@gmail.com Subject: [PATCH v3 07/15] spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls. Date: Thu, 18 Jan 2024 10:54:30 +0530 Message-Id: <20240118052438.1475437-8-harshpb@linux.ibm.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240118052438.1475437-1-harshpb@linux.ibm.com> References: <20240118052438.1475437-1-harshpb@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: VMx4GiuXGeRQe7oQhD79uUn31oTXWqZg X-Proofpoint-ORIG-GUID: AL-R7Rervf_9nHwUzmyOhapoMqsb8CPq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-01-18_02,2024-01-17_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 phishscore=0 mlxscore=0 spamscore=0 bulkscore=0 mlxlogscore=676 clxscore=1015 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2401180035 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_H4=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 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. [amachhiw: set capabilities check for no guests created before calling] Signed-off-by: Michael Neuling Signed-off-by: Amit Machhiwal Signed-off-by: Harsh Prateek Bora --- include/hw/ppc/spapr.h | 4 +- include/hw/ppc/spapr_nested.h | 7 +++ hw/ppc/spapr_nested.c | 106 ++++++++++++++++++++++++++++++++++ 3 files changed, 116 insertions(+), 1 deletion(-) diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 5e0939fcc0..5a001a7c00 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -586,8 +586,10 @@ 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 ea617c4710..a01f8e37ab 100644 --- a/include/hw/ppc/spapr_nested.h +++ b/include/hw/ppc/spapr_nested.h @@ -10,8 +10,13 @@ typedef struct SpaprMachineStateNested { #define NESTED_API_KVM_HV 1 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 @@ -21,6 +26,8 @@ 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. diff --git a/hw/ppc/spapr_nested.c b/hw/ppc/spapr_nested.c index d29224c3c9..1e620ef2fb 100644 --- a/hw/ppc/spapr_nested.c +++ b/hw/ppc/spapr_nested.c @@ -474,6 +474,11 @@ static target_ulong h_guest_set_capabilities(PowerPCCPU *cpu, return H_P2; /* isn't supported */ } + /* Confirm there are no guests created yet */ + if (spapr->nested.guests) { + return H_STATE; + } + /* If there are no capabilities configured, set the R5 to the index of * the first supported Power Processor Mode */ @@ -514,6 +519,105 @@ 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_hv(void) { spapr_register_hypercall(KVMPPC_H_SET_PARTITION_TABLE, h_set_ptbl); @@ -526,6 +630,8 @@ void spapr_register_nested_papr(void) { 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