From 0990ce6a2e900d0bdda7f3ecdc991746f63551fb Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Thu, 24 Oct 2019 16:27:22 +0200 Subject: ppc: Add intc_destroy() handlers to SpaprInterruptController/PnvChip SpaprInterruptControllerClass and PnvChipClass have an intc_create() method that calls the appropriate routine, ie. icp_create() or xive_tctx_create(), to establish the link between the VCPU and the presenter component of the interrupt controller during realize. There aren't any symmetrical call to be called when the VCPU gets unrealized though. It is assumed that object_unparent() is the only thing to do. This is questionable because the parenting logic around the CPU and presenter objects is really an implementation detail of the interrupt controller. It shouldn't be open-coded in the machine code. Fix this by adding an intc_destroy() method that undoes what was done in intc_create(). Also NULLify the presenter pointers to avoid having stale pointers around. This will allow to reliably check if a vCPU has a valid presenter. Signed-off-by: Greg Kurz Message-Id: <157192724208.3146912.7254684777515287626.stgit@bahia.lan> Signed-off-by: David Gibson Signed-off-by: Laurent Vivier --- hw/ppc/pnv.c | 21 +++++++++++++++++++++ hw/ppc/pnv_core.c | 7 ++++--- hw/ppc/spapr_cpu_core.c | 7 +------ hw/ppc/spapr_irq.c | 14 ++++++++++++++ 4 files changed, 40 insertions(+), 9 deletions(-) (limited to 'hw/ppc') diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 60632720ef..627c08e5b9 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -778,6 +778,7 @@ static void pnv_chip_power8_intc_create(PnvChip *chip, PowerPCCPU *cpu, pnv_cpu->intc = obj; } + static void pnv_chip_power8_intc_reset(PnvChip *chip, PowerPCCPU *cpu) { PnvCPUState *pnv_cpu = pnv_cpu_state(cpu); @@ -785,6 +786,14 @@ static void pnv_chip_power8_intc_reset(PnvChip *chip, PowerPCCPU *cpu) icp_reset(ICP(pnv_cpu->intc)); } +static void pnv_chip_power8_intc_destroy(PnvChip *chip, PowerPCCPU *cpu) +{ + PnvCPUState *pnv_cpu = pnv_cpu_state(cpu); + + icp_destroy(ICP(pnv_cpu->intc)); + pnv_cpu->intc = NULL; +} + /* * 0:48 Reserved - Read as zeroes * 49:52 Node ID @@ -829,6 +838,14 @@ static void pnv_chip_power9_intc_reset(PnvChip *chip, PowerPCCPU *cpu) xive_tctx_reset(XIVE_TCTX(pnv_cpu->intc)); } +static void pnv_chip_power9_intc_destroy(PnvChip *chip, PowerPCCPU *cpu) +{ + PnvCPUState *pnv_cpu = pnv_cpu_state(cpu); + + xive_tctx_destroy(XIVE_TCTX(pnv_cpu->intc)); + pnv_cpu->intc = NULL; +} + /* * Allowed core identifiers on a POWER8 Processor Chip : * @@ -999,6 +1016,7 @@ static void pnv_chip_power8e_class_init(ObjectClass *klass, void *data) k->core_pir = pnv_chip_core_pir_p8; k->intc_create = pnv_chip_power8_intc_create; k->intc_reset = pnv_chip_power8_intc_reset; + k->intc_destroy = pnv_chip_power8_intc_destroy; k->isa_create = pnv_chip_power8_isa_create; k->dt_populate = pnv_chip_power8_dt_populate; k->pic_print_info = pnv_chip_power8_pic_print_info; @@ -1019,6 +1037,7 @@ static void pnv_chip_power8_class_init(ObjectClass *klass, void *data) k->core_pir = pnv_chip_core_pir_p8; k->intc_create = pnv_chip_power8_intc_create; k->intc_reset = pnv_chip_power8_intc_reset; + k->intc_destroy = pnv_chip_power8_intc_destroy; k->isa_create = pnv_chip_power8_isa_create; k->dt_populate = pnv_chip_power8_dt_populate; k->pic_print_info = pnv_chip_power8_pic_print_info; @@ -1039,6 +1058,7 @@ static void pnv_chip_power8nvl_class_init(ObjectClass *klass, void *data) k->core_pir = pnv_chip_core_pir_p8; k->intc_create = pnv_chip_power8_intc_create; k->intc_reset = pnv_chip_power8_intc_reset; + k->intc_destroy = pnv_chip_power8_intc_destroy; k->isa_create = pnv_chip_power8nvl_isa_create; k->dt_populate = pnv_chip_power8_dt_populate; k->pic_print_info = pnv_chip_power8_pic_print_info; @@ -1209,6 +1229,7 @@ static void pnv_chip_power9_class_init(ObjectClass *klass, void *data) k->core_pir = pnv_chip_core_pir_p9; k->intc_create = pnv_chip_power9_intc_create; k->intc_reset = pnv_chip_power9_intc_reset; + k->intc_destroy = pnv_chip_power9_intc_destroy; k->isa_create = pnv_chip_power9_isa_create; k->dt_populate = pnv_chip_power9_dt_populate; k->pic_print_info = pnv_chip_power9_pic_print_info; diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c index e81cd3a3e0..61b3d3ce22 100644 --- a/hw/ppc/pnv_core.c +++ b/hw/ppc/pnv_core.c @@ -269,11 +269,12 @@ err: error_propagate(errp, local_err); } -static void pnv_core_cpu_unrealize(PowerPCCPU *cpu) +static void pnv_core_cpu_unrealize(PowerPCCPU *cpu, PnvChip *chip) { PnvCPUState *pnv_cpu = pnv_cpu_state(cpu); + PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip); - object_unparent(OBJECT(pnv_cpu_state(cpu)->intc)); + pcc->intc_destroy(chip, cpu); cpu_remove_sync(CPU(cpu)); cpu->machine_data = NULL; g_free(pnv_cpu); @@ -289,7 +290,7 @@ static void pnv_core_unrealize(DeviceState *dev, Error **errp) qemu_unregister_reset(pnv_core_reset, pc); for (i = 0; i < cc->nr_threads; i++) { - pnv_core_cpu_unrealize(pc->threads[i]); + pnv_core_cpu_unrealize(pc->threads[i], pc->chip); } g_free(pc->threads); } diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c index ef7b27a66d..8339c4c0f8 100644 --- a/hw/ppc/spapr_cpu_core.c +++ b/hw/ppc/spapr_cpu_core.c @@ -195,12 +195,7 @@ static void spapr_unrealize_vcpu(PowerPCCPU *cpu, SpaprCpuCore *sc) if (!sc->pre_3_0_migration) { vmstate_unregister(NULL, &vmstate_spapr_cpu_state, cpu->machine_data); } - if (spapr_cpu_state(cpu)->icp) { - object_unparent(OBJECT(spapr_cpu_state(cpu)->icp)); - } - if (spapr_cpu_state(cpu)->tctx) { - object_unparent(OBJECT(spapr_cpu_state(cpu)->tctx)); - } + spapr_irq_cpu_intc_destroy(SPAPR_MACHINE(qdev_get_machine()), cpu); cpu_remove_sync(CPU(cpu)); object_unparent(OBJECT(cpu)); } diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c index b941608b69..168044be85 100644 --- a/hw/ppc/spapr_irq.c +++ b/hw/ppc/spapr_irq.c @@ -234,6 +234,20 @@ void spapr_irq_cpu_intc_reset(SpaprMachineState *spapr, PowerPCCPU *cpu) } } +void spapr_irq_cpu_intc_destroy(SpaprMachineState *spapr, PowerPCCPU *cpu) +{ + SpaprInterruptController *intcs[] = ALL_INTCS(spapr); + int i; + + for (i = 0; i < ARRAY_SIZE(intcs); i++) { + SpaprInterruptController *intc = intcs[i]; + if (intc) { + SpaprInterruptControllerClass *sicc = SPAPR_INTC_GET_CLASS(intc); + sicc->cpu_intc_destroy(intc, cpu); + } + } +} + static void spapr_set_irq(void *opaque, int irq, int level) { SpaprMachineState *spapr = SPAPR_MACHINE(opaque); 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