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Wed, 6 Sep 2023 04:34:17 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C520620040; Wed, 6 Sep 2023 04:34:15 +0000 (GMT) Received: from li-1901474c-32f3-11b2-a85c-fc5ff2c001f3.in.ibm.com (unknown [9.109.242.129]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 6 Sep 2023 04:34:15 +0000 (GMT) From: Harsh Prateek Bora To: npiggin@gmail.com, danielhb413@gmail.com, qemu-ppc@nongnu.org Cc: qemu-devel@nongnu.org, mikey@neuling.org, vaibhav@linux.ibm.com, jniethe5@gmail.com, sbhat@linux.ibm.com, kconsul@linux.vnet.ibm.com Subject: [PATCH RESEND 14/15] ppc: spapr: Implement nested PAPR hcall - H_GUEST_DELETE Date: Wed, 6 Sep 2023 10:03:32 +0530 Message-Id: <20230906043333.448244-15-harshpb@linux.ibm.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20230906043333.448244-1-harshpb@linux.ibm.com> References: <20230906043333.448244-1-harshpb@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 5oKypm2iIC1tcMTaJnoiK0mRa2KO1M1G X-Proofpoint-ORIG-GUID: 5AkJ-wH4NtFAY4KkyYKkV_BhadVhytyq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-05_13,2023-09-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 adultscore=0 mlxlogscore=803 impostorscore=0 phishscore=0 mlxscore=0 suspectscore=0 priorityscore=1501 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309060040 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 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 This hcall is used by L1 to delete a guest entry in L0 or can also be used to delete all guests if needed (usually in shutdown scenarios). Signed-off-by: Michael Neuling Signed-off-by: Harsh Prateek Bora --- hw/ppc/spapr_nested.c | 32 ++++++++++++++++++++++++++++++++ include/hw/ppc/spapr_nested.h | 1 + 2 files changed, 33 insertions(+) diff --git a/hw/ppc/spapr_nested.c b/hw/ppc/spapr_nested.c index 3605f27115..5afdad4990 100644 --- a/hw/ppc/spapr_nested.c +++ b/hw/ppc/spapr_nested.c @@ -1692,6 +1692,37 @@ static void exit_process_output_buffer(PowerPCCPU *cpu, return; } +static target_ulong h_guest_delete(PowerPCCPU *cpu, + SpaprMachineState *spapr, + target_ulong opcode, + target_ulong *args) +{ + target_ulong flags = args[0]; + target_ulong lpid = args[1]; + struct SpaprMachineStateNestedGuest *guest; + + if (!spapr_get_cap(spapr, SPAPR_CAP_NESTED_PAPR)) { + return H_FUNCTION; + } + + /* handle flag deleteAllGuests, remaining bits reserved */ + if (flags & ~H_GUEST_DELETE_ALL_MASK) { + return H_UNSUPPORTED_FLAG; + } else if (flags & H_GUEST_DELETE_ALL_MASK) { + g_hash_table_destroy(spapr->nested.guests); + return H_SUCCESS; + } + + guest = g_hash_table_lookup(spapr->nested.guests, GINT_TO_POINTER(lpid)); + if (!guest) { + return H_P2; + } + + g_hash_table_remove(spapr->nested.guests, GINT_TO_POINTER(lpid)); + + return H_SUCCESS; +} + void spapr_register_nested(void) { spapr_register_hypercall(KVMPPC_H_SET_PARTITION_TABLE, h_set_ptbl); @@ -1709,6 +1740,7 @@ void spapr_register_nested_phyp(void) spapr_register_hypercall(H_GUEST_SET_STATE , h_guest_set_state); spapr_register_hypercall(H_GUEST_GET_STATE , h_guest_get_state); spapr_register_hypercall(H_GUEST_RUN_VCPU , h_guest_run_vcpu); + spapr_register_hypercall(H_GUEST_DELETE , h_guest_delete); } #else diff --git a/include/hw/ppc/spapr_nested.h b/include/hw/ppc/spapr_nested.h index ca5d28c06e..9eb43778ad 100644 --- a/include/hw/ppc/spapr_nested.h +++ b/include/hw/ppc/spapr_nested.h @@ -209,6 +209,7 @@ #define H_GUEST_GETSET_STATE_FLAG_GUEST_WIDE 0x8000000000000000 /* BE in GSB */ #define GUEST_STATE_REQUEST_GUEST_WIDE 0x1 #define GUEST_STATE_REQUEST_SET 0x2 +#define H_GUEST_DELETE_ALL_MASK 0x8000000000000000ULL #define GUEST_STATE_ELEMENT(i, sz, s, f, ptr, c) { \ .id = (i), \