{"id":2230470,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2230470/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429183310.12455-7-harshpb@linux.ibm.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260429183310.12455-7-harshpb@linux.ibm.com>","date":"2026-04-29T18:32:56","name":"[PULL,06/13] pnv/mpipl: Set thread entry size to be allocated by firmware","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"2e13b5bf6ebc2fad50618e28174d2d4d0a18bac1","submitter":{"id":85411,"url":"http://patchwork.ozlabs.org/api/1.1/people/85411/?format=json","name":"Harsh Prateek Bora","email":"harshpb@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260429183310.12455-7-harshpb@linux.ibm.com/mbox/","series":[{"id":502132,"url":"http://patchwork.ozlabs.org/api/1.1/series/502132/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502132","date":"2026-04-29T18:32:53","name":"[PULL,01/13] ppc/pnv: Move SBE host doorbell function to top of file","version":1,"mbox":"http://patchwork.ozlabs.org/series/502132/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230470/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230470/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 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requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7,\n RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001,\n 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":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"From: Aditya Gupta \n\nSet the \"Thread Register State Entry Size\" that is required by firmware\n(OPAL), to know size of memory to allocate to capture CPU state, in the\nevent of a crash\n\nReviewed-by: Hari Bathini \nReviewed-by: Sourabh Jain \nSigned-off-by: Aditya Gupta \nTested-by: Shivang Upadhyay \nLink: https://lore.kernel.org/qemu-devel/20260424083837.214947-7-adityag@linux.ibm.com\nSigned-off-by: Harsh Prateek Bora \n---\n hw/ppc/pnv.c | 25 +++++++++++++++++++++++++\n 1 file changed, 25 insertions(+)","diff":"diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c\nindex 524563dcfc..09b69c355a 100644\n--- a/hw/ppc/pnv.c\n+++ b/hw/ppc/pnv.c\n@@ -748,10 +748,35 @@ static void pnv_powerdown_notify(Notifier *n, void *opaque)\n \n static void pnv_reset(MachineState *machine, ResetType type)\n {\n+ PnvMachineState *pnv = PNV_MACHINE(machine);\n void *fdt;\n \n qemu_devices_reset(type);\n \n+ if (!pnv->mpipl_state.is_next_boot_mpipl) {\n+ /*\n+ * Set the \"Thread Register State Entry Size\", so that firmware can\n+ * allocate enough memory to capture CPU state in the event of a\n+ * crash\n+ */\n+\n+ MpiplProcDumpArea proc_area;\n+\n+ proc_area.version = PROC_DUMP_AREA_VERSION_P9;\n+ proc_area.thread_size = cpu_to_be32(sizeof(MpiplPreservedCPUState));\n+\n+ /* These are to be allocated & assigned by the firmware */\n+ proc_area.alloc_addr = 0;\n+ proc_area.alloc_size = 0;\n+\n+ /* These get assigned after crash, when QEMU preserves the registers */\n+ proc_area.dest_addr = 0;\n+ proc_area.act_size = 0;\n+\n+ cpu_physical_memory_write(PROC_DUMP_AREA_OFF, &proc_area,\n+ sizeof(proc_area));\n+ }\n+\n fdt = machine->fdt;\n cpu_physical_memory_write(PNV_FDT_ADDR, fdt, fdt_totalsize(fdt));\n }\n","prefixes":["PULL","06/13"]}