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ppc: Add intc_destroy() handlers to SpaprInterruptController/PnvChip

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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 <groug@kaod.org>
Message-Id: <157192724208.3146912.7254684777515287626.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
This commit is contained in:
Greg Kurz 2019-10-24 16:27:22 +02:00 committed by Laurent Vivier
parent 36609b4fa3
commit 0990ce6a2e
12 changed files with 75 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
hw/intc/spapr_xive.c
View File

@ -555,6 +555,15 @@ static void spapr_xive_cpu_intc_reset(SpaprInterruptController *intc,
xive_tctx_set_os_cam(tctx, xive_nvt_cam_line(nvt_blk, nvt_idx));
}
static void spapr_xive_cpu_intc_destroy(SpaprInterruptController *intc,
PowerPCCPU *cpu)
{
SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu);
xive_tctx_destroy(spapr_cpu->tctx);
spapr_cpu->tctx = NULL;
}
static void spapr_xive_set_irq(SpaprInterruptController *intc, int irq, int val)
{
SpaprXive *xive = SPAPR_XIVE(intc);
@ -692,6 +701,7 @@ static void spapr_xive_class_init(ObjectClass *klass, void *data)
sicc->deactivate = spapr_xive_deactivate;
sicc->cpu_intc_create = spapr_xive_cpu_intc_create;
sicc->cpu_intc_reset = spapr_xive_cpu_intc_reset;
sicc->cpu_intc_destroy = spapr_xive_cpu_intc_destroy;
sicc->claim_irq = spapr_xive_claim_irq;
sicc->free_irq = spapr_xive_free_irq;
sicc->set_irq = spapr_xive_set_irq;

5
hw/intc/xics.c
View File

@ -401,6 +401,11 @@ Object *icp_create(Object *cpu, const char *type, XICSFabric *xi, Error **errp)
return obj;
}
void icp_destroy(ICPState *icp)
{
object_unparent(OBJECT(icp));
}
/*
* ICS: Source layer
*/

10
hw/intc/xics_spapr.c
View File

@ -352,6 +352,15 @@ static void xics_spapr_cpu_intc_reset(SpaprInterruptController *intc,
icp_reset(spapr_cpu_state(cpu)->icp);
}
static void xics_spapr_cpu_intc_destroy(SpaprInterruptController *intc,
PowerPCCPU *cpu)
{
SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu);
icp_destroy(spapr_cpu->icp);
spapr_cpu->icp = NULL;
}
static int xics_spapr_claim_irq(SpaprInterruptController *intc, int irq,
bool lsi, Error **errp)
{
@ -440,6 +449,7 @@ static void ics_spapr_class_init(ObjectClass *klass, void *data)
sicc->deactivate = xics_spapr_deactivate;
sicc->cpu_intc_create = xics_spapr_cpu_intc_create;
sicc->cpu_intc_reset = xics_spapr_cpu_intc_reset;
sicc->cpu_intc_destroy = xics_spapr_cpu_intc_destroy;
sicc->claim_irq = xics_spapr_claim_irq;
sicc->free_irq = xics_spapr_free_irq;
sicc->set_irq = xics_spapr_set_irq;

5
hw/intc/xive.c
View File

@ -696,6 +696,11 @@ error:
return NULL;
}
void xive_tctx_destroy(XiveTCTX *tctx)
{
object_unparent(OBJECT(tctx));
}
/*
* XIVE ESB helpers
*/

21
hw/ppc/pnv.c
View File

@ -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;

7
hw/ppc/pnv_core.c
View File

@ -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);
}

7
hw/ppc/spapr_cpu_core.c
View File

@ -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));
}

14
hw/ppc/spapr_irq.c
View File

@ -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);

1
include/hw/ppc/pnv.h
View File

@ -112,6 +112,7 @@ typedef struct PnvChipClass {
uint32_t (*core_pir)(PnvChip *chip, uint32_t core_id);
void (*intc_create)(PnvChip *chip, PowerPCCPU *cpu, Error **errp);
void (*intc_reset)(PnvChip *chip, PowerPCCPU *cpu);
void (*intc_destroy)(PnvChip *chip, PowerPCCPU *cpu);
ISABus *(*isa_create)(PnvChip *chip, Error **errp);
void (*dt_populate)(PnvChip *chip, void *fdt);
void (*pic_print_info)(PnvChip *chip, Monitor *mon);

2
include/hw/ppc/spapr_irq.h
View File

@ -53,6 +53,7 @@ typedef struct SpaprInterruptControllerClass {
int (*cpu_intc_create)(SpaprInterruptController *intc,
PowerPCCPU *cpu, Error **errp);
void (*cpu_intc_reset)(SpaprInterruptController *intc, PowerPCCPU *cpu);
void (*cpu_intc_destroy)(SpaprInterruptController *intc, PowerPCCPU *cpu);
int (*claim_irq)(SpaprInterruptController *intc, int irq, bool lsi,
Error **errp);
void (*free_irq)(SpaprInterruptController *intc, int irq);
@ -70,6 +71,7 @@ void spapr_irq_update_active_intc(SpaprMachineState *spapr);
int spapr_irq_cpu_intc_create(SpaprMachineState *spapr,
PowerPCCPU *cpu, Error **errp);
void spapr_irq_cpu_intc_reset(SpaprMachineState *spapr, PowerPCCPU *cpu);
void spapr_irq_cpu_intc_destroy(SpaprMachineState *spapr, PowerPCCPU *cpu);
void spapr_irq_print_info(SpaprMachineState *spapr, Monitor *mon);
void spapr_irq_dt(SpaprMachineState *spapr, uint32_t nr_servers,
void *fdt, uint32_t phandle);

1
include/hw/ppc/xics.h
View File

@ -181,6 +181,7 @@ void icp_resend(ICPState *ss);
Object *icp_create(Object *cpu, const char *type, XICSFabric *xi,
Error **errp);
void icp_destroy(ICPState *icp);
/* KVM */
void icp_get_kvm_state(ICPState *icp);

1
include/hw/ppc/xive.h
View File

@ -416,6 +416,7 @@ uint64_t xive_tctx_tm_read(XiveTCTX *tctx, hwaddr offset, unsigned size);
void xive_tctx_pic_print_info(XiveTCTX *tctx, Monitor *mon);
Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp);
void xive_tctx_reset(XiveTCTX *tctx);
void xive_tctx_destroy(XiveTCTX *tctx);
static inline uint32_t xive_nvt_cam_line(uint8_t nvt_blk, uint32_t nvt_idx)
{