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From 43100bba2bfd9de0c3bab7c3e815b02faa69242d Mon Sep 17 00:00:00 2001
From: Bibo Mao <maobibo@loongson.cn>
Date: Wed, 13 Dec 2023 12:13:14 +0800
Subject: [PATCH] hw/loongarch/virt: Set iocsr address space per-board rather
than percpu
LoongArch system has iocsr address space, most iocsr registers are
per-board, however some iocsr register spaces banked for percpu such
as ipi mailbox and extioi interrupt status. For banked iocsr space,
each cpu has the same iocsr space, but separate data.
This patch changes iocsr address space per-board rather percpu,
for iocsr registers specified for cpu, MemTxAttrs.requester_id
can be parsed for the cpu. With this patches, the total address space
on board will be simple, only iocsr address space and system memory,
rather than the number of cpu and system memory.
confict:
+<<<<<<< HEAD
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_STRUCT(ipi_core, LoongArchIPI, 0, vmstate_ipi_core, IPICore),
++=======
+ .version_id = 2,
+ .minimum_version_id = 2,
+ .fields = (const VMStateField[]) {
+ VMSTATE_STRUCT_VARRAY_POINTER_UINT32(cpu, LoongArchIPI, num_cpu,
+ vmstate_ipi_core, IPICore),
++>>>>>>> hw/loongarch/virt: Set iocsr address space per-board rather than percpu
solve:
save: hw/loongarch/virt: Set iocsr address space per-board rather than percpu
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20231215100333.3933632-3-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
---
hw/intc/loongarch_extioi.c | 3 -
hw/intc/loongarch_ipi.c | 63 +++++++++++++++-----
hw/loongarch/virt.c | 91 +++++++++++++++++++++--------
include/hw/intc/loongarch_extioi.h | 1 -
include/hw/intc/loongarch_ipi.h | 3 +-
include/hw/loongarch/virt.h | 3 +
target/loongarch/cpu.c | 48 ---------------
target/loongarch/cpu.h | 4 +-
target/loongarch/kvm/kvm.c | 2 +-
target/loongarch/tcg/iocsr_helper.c | 16 ++---
10 files changed, 129 insertions(+), 105 deletions(-)
diff --git a/hw/intc/loongarch_extioi.c b/hw/intc/loongarch_extioi.c
index 24fb3af8cc..77b4776958 100644
--- a/hw/intc/loongarch_extioi.c
+++ b/hw/intc/loongarch_extioi.c
@@ -282,9 +282,6 @@ static void loongarch_extioi_instance_init(Object *obj)
qdev_init_gpio_in(DEVICE(obj), extioi_setirq, EXTIOI_IRQS);
for (cpu = 0; cpu < EXTIOI_CPUS; cpu++) {
- memory_region_init_io(&s->extioi_iocsr_mem[cpu], OBJECT(s), &extioi_ops,
- s, "extioi_iocsr", 0x900);
- sysbus_init_mmio(dev, &s->extioi_iocsr_mem[cpu]);
for (pin = 0; pin < LS3A_INTC_IP; pin++) {
qdev_init_gpio_out(DEVICE(obj), &s->parent_irq[cpu][pin], 1);
}
diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c
index 221246c5cb..e228669aa5 100644
--- a/hw/intc/loongarch_ipi.c
+++ b/hw/intc/loongarch_ipi.c
@@ -9,6 +9,7 @@
#include "hw/sysbus.h"
#include "hw/intc/loongarch_ipi.h"
#include "hw/irq.h"
+#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu/log.h"
#include "exec/address-spaces.h"
@@ -26,7 +27,7 @@ static MemTxResult loongarch_ipi_readl(void *opaque, hwaddr addr,
uint64_t ret = 0;
int index = 0;
- s = &ipi->ipi_core;
+ s = &ipi->cpu[attrs.requester_id];
addr &= 0xff;
switch (addr) {
case CORE_STATUS_OFF:
@@ -65,7 +66,7 @@ static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr,
* if the mask is 0, we need not to do anything.
*/
if ((val >> 27) & 0xf) {
- data = address_space_ldl(&env->address_space_iocsr, addr,
+ data = address_space_ldl(env->address_space_iocsr, addr,
attrs, NULL);
for (i = 0; i < 4; i++) {
/* get mask for byte writing */
@@ -77,7 +78,7 @@ static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr,
data &= mask;
data |= (val >> 32) & ~mask;
- address_space_stl(&env->address_space_iocsr, addr,
+ address_space_stl(env->address_space_iocsr, addr,
data, attrs, NULL);
}
@@ -172,7 +173,7 @@ static MemTxResult loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
uint8_t vector;
CPUState *cs;
- s = &ipi->ipi_core;
+ s = &ipi->cpu[attrs.requester_id];
addr &= 0xff;
trace_loongarch_ipi_write(size, (uint64_t)addr, val);
switch (addr) {
@@ -214,7 +215,6 @@ static MemTxResult loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
/* override requester_id */
attrs.requester_id = cs->cpu_index;
- ipi = LOONGARCH_IPI(LOONGARCH_CPU(cs)->env.ipistate);
loongarch_ipi_writel(ipi, CORE_SET_OFF, BIT(vector), 4, attrs);
break;
default:
@@ -265,12 +265,18 @@ static const MemoryRegionOps loongarch_ipi64_ops = {
.endianness = DEVICE_LITTLE_ENDIAN,
};
-static void loongarch_ipi_init(Object *obj)
+static void loongarch_ipi_realize(DeviceState *dev, Error **errp)
{
- LoongArchIPI *s = LOONGARCH_IPI(obj);
- SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+ LoongArchIPI *s = LOONGARCH_IPI(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+ int i;
+
+ if (s->num_cpu == 0) {
+ error_setg(errp, "num-cpu must be at least 1");
+ return;
+ }
- memory_region_init_io(&s->ipi_iocsr_mem, obj, &loongarch_ipi_ops,
+ memory_region_init_io(&s->ipi_iocsr_mem, OBJECT(dev), &loongarch_ipi_ops,
s, "loongarch_ipi_iocsr", 0x48);
/* loongarch_ipi_iocsr performs re-entrant IO through ipi_send */
@@ -278,10 +284,20 @@ static void loongarch_ipi_init(Object *obj)
sysbus_init_mmio(sbd, &s->ipi_iocsr_mem);
- memory_region_init_io(&s->ipi64_iocsr_mem, obj, &loongarch_ipi64_ops,
+ memory_region_init_io(&s->ipi64_iocsr_mem, OBJECT(dev),
+ &loongarch_ipi64_ops,
s, "loongarch_ipi64_iocsr", 0x118);
sysbus_init_mmio(sbd, &s->ipi64_iocsr_mem);
- qdev_init_gpio_out(DEVICE(obj), &s->ipi_core.irq, 1);
+
+ s->cpu = g_new0(IPICore, s->num_cpu);
+ if (s->cpu == NULL) {
+ error_setg(errp, "Memory allocation for ExtIOICore faile");
+ return;
+ }
+
+ for (i = 0; i < s->num_cpu; i++) {
+ qdev_init_gpio_out(dev, &s->cpu[i].irq, 1);
+ }
}
static const VMStateDescription vmstate_ipi_core = {
@@ -300,27 +316,42 @@ static const VMStateDescription vmstate_ipi_core = {
static const VMStateDescription vmstate_loongarch_ipi = {
.name = TYPE_LOONGARCH_IPI,
- .version_id = 1,
- .minimum_version_id = 1,
- .fields = (VMStateField[]) {
- VMSTATE_STRUCT(ipi_core, LoongArchIPI, 0, vmstate_ipi_core, IPICore),
+ .version_id = 2,
+ .minimum_version_id = 2,
+ .fields = (const VMStateField[]) {
+ VMSTATE_STRUCT_VARRAY_POINTER_UINT32(cpu, LoongArchIPI, num_cpu,
+ vmstate_ipi_core, IPICore),
VMSTATE_END_OF_LIST()
}
};
+static Property ipi_properties[] = {
+ DEFINE_PROP_UINT32("num-cpu", LoongArchIPI, num_cpu, 1),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
static void loongarch_ipi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
+ dc->realize = loongarch_ipi_realize;
+ device_class_set_props(dc, ipi_properties);
dc->vmsd = &vmstate_loongarch_ipi;
}
+static void loongarch_ipi_finalize(Object *obj)
+{
+ LoongArchIPI *s = LOONGARCH_IPI(obj);
+
+ g_free(s->cpu);
+}
+
static const TypeInfo loongarch_ipi_info = {
.name = TYPE_LOONGARCH_IPI,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(LoongArchIPI),
- .instance_init = loongarch_ipi_init,
.class_init = loongarch_ipi_class_init,
+ .instance_finalize = loongarch_ipi_finalize,
};
static void loongarch_ipi_register_types(void)
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index 4b7dc67a2d..13d19b6da3 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -535,9 +535,6 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
CPUState *cpu_state;
int cpu, pin, i, start, num;
- extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
- sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
-
/*
* The connection of interrupts:
* +-----+ +---------+ +-------+
@@ -559,36 +556,36 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
* | UARTs | | Devices | | Devices |
* +--------+ +---------+ +---------+
*/
+
+ /* Create IPI device */
+ ipi = qdev_new(TYPE_LOONGARCH_IPI);
+ qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.cpus);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
+
+ /* IPI iocsr memory region */
+ memory_region_add_subregion(&lams->system_iocsr, SMP_IPI_MAILBOX,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0));
+ memory_region_add_subregion(&lams->system_iocsr, MAIL_SEND_ADDR,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1));
+
for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
cpu_state = qemu_get_cpu(cpu);
cpudev = DEVICE(cpu_state);
lacpu = LOONGARCH_CPU(cpu_state);
env = &(lacpu->env);
-
- ipi = qdev_new(TYPE_LOONGARCH_IPI);
- sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
+ env->address_space_iocsr = &lams->as_iocsr;
/* connect ipi irq to cpu irq */
- qdev_connect_gpio_out(ipi, 0, qdev_get_gpio_in(cpudev, IRQ_IPI));
- /* IPI iocsr memory region */
- memory_region_add_subregion(&env->system_iocsr, SMP_IPI_MAILBOX,
- sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
- 0));
- memory_region_add_subregion(&env->system_iocsr, MAIL_SEND_ADDR,
- sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
- 1));
- /*
- * extioi iocsr memory region
- * only one extioi is added on loongarch virt machine
- * external device interrupt can only be routed to cpu 0-3
- */
- if (cpu < EXTIOI_CPUS)
- memory_region_add_subregion(&env->system_iocsr, APIC_BASE,
- sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi),
- cpu));
+ qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI));
env->ipistate = ipi;
}
+ /* Create EXTIOI device */
+ extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
+ memory_region_add_subregion(&lams->system_iocsr, APIC_BASE,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0));
+
/*
* connect ext irq to the cpu irq
* cpu_pin[9:2] <= intc_pin[7:0]
@@ -733,6 +730,43 @@ static void loongarch_direct_kernel_boot(LoongArchMachineState *lams,
}
}
+static void loongarch_qemu_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+}
+
+static uint64_t loongarch_qemu_read(void *opaque, hwaddr addr, unsigned size)
+{
+ switch (addr) {
+ case VERSION_REG:
+ return 0x11ULL;
+ case FEATURE_REG:
+ return 1ULL << IOCSRF_MSI | 1ULL << IOCSRF_EXTIOI |
+ 1ULL << IOCSRF_CSRIPI;
+ case VENDOR_REG:
+ return 0x6e6f73676e6f6f4cULL; /* "Loongson" */
+ case CPUNAME_REG:
+ return 0x303030354133ULL; /* "3A5000" */
+ case MISC_FUNC_REG:
+ return 1ULL << IOCSRM_EXTIOI_EN;
+ }
+ return 0ULL;
+}
+
+static const MemoryRegionOps loongarch_qemu_ops = {
+ .read = loongarch_qemu_read,
+ .write = loongarch_qemu_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 8,
+ },
+ .impl = {
+ .min_access_size = 8,
+ .max_access_size = 8,
+ },
+};
+
static void loongarch_init(MachineState *machine)
{
LoongArchCPU *lacpu;
@@ -761,8 +795,17 @@ static void loongarch_init(MachineState *machine)
exit(1);
}
create_fdt(lams);
- /* Init CPUs */
+ /* Create IOCSR space */
+ memory_region_init_io(&lams->system_iocsr, OBJECT(machine), NULL,
+ machine, "iocsr", UINT64_MAX);
+ address_space_init(&lams->as_iocsr, &lams->system_iocsr, "IOCSR");
+ memory_region_init_io(&lams->iocsr_mem, OBJECT(machine),
+ &loongarch_qemu_ops,
+ machine, "iocsr_misc", 0x428);
+ memory_region_add_subregion(&lams->system_iocsr, 0, &lams->iocsr_mem);
+
+ /* Init CPUs */
possible_cpus = mc->possible_cpu_arch_ids(machine);
for (i = 0; i < possible_cpus->len; i++) {
cpu = cpu_create(machine->cpu_type);
diff --git a/include/hw/intc/loongarch_extioi.h b/include/hw/intc/loongarch_extioi.h
index fbdef9a7b3..110e5e8873 100644
--- a/include/hw/intc/loongarch_extioi.h
+++ b/include/hw/intc/loongarch_extioi.h
@@ -58,7 +58,6 @@ struct LoongArchExtIOI {
uint8_t sw_coremap[EXTIOI_IRQS];
qemu_irq parent_irq[EXTIOI_CPUS][LS3A_INTC_IP];
qemu_irq irq[EXTIOI_IRQS];
- MemoryRegion extioi_iocsr_mem[EXTIOI_CPUS];
MemoryRegion extioi_system_mem;
};
#endif /* LOONGARCH_EXTIOI_H */
diff --git a/include/hw/intc/loongarch_ipi.h b/include/hw/intc/loongarch_ipi.h
index 6c6194786e..1c1e834849 100644
--- a/include/hw/intc/loongarch_ipi.h
+++ b/include/hw/intc/loongarch_ipi.h
@@ -47,7 +47,8 @@ struct LoongArchIPI {
SysBusDevice parent_obj;
MemoryRegion ipi_iocsr_mem;
MemoryRegion ipi64_iocsr_mem;
- IPICore ipi_core;
+ uint32_t num_cpu;
+ IPICore *cpu;
};
#endif
diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h
index db0831b471..6ef9a92394 100644
--- a/include/hw/loongarch/virt.h
+++ b/include/hw/loongarch/virt.h
@@ -50,6 +50,9 @@ struct LoongArchMachineState {
DeviceState *platform_bus_dev;
PCIBus *pci_bus;
PFlashCFI01 *flash;
+ MemoryRegion system_iocsr;
+ MemoryRegion iocsr_mem;
+ AddressSpace as_iocsr;
};
#define TYPE_LOONGARCH_MACHINE MACHINE_TYPE_NAME("virt")
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 413414392b..6611d137a1 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -602,47 +602,6 @@ static void loongarch_cpu_realizefn(DeviceState *dev, Error **errp)
lacc->parent_realize(dev, errp);
}
-#ifndef CONFIG_USER_ONLY
-static void loongarch_qemu_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
- qemu_log_mask(LOG_UNIMP, "[%s]: Unimplemented reg 0x%" HWADDR_PRIx "\n",
- __func__, addr);
-}
-
-static uint64_t loongarch_qemu_read(void *opaque, hwaddr addr, unsigned size)
-{
- switch (addr) {
- case VERSION_REG:
- return 0x11ULL;
- case FEATURE_REG:
- return 1ULL << IOCSRF_MSI | 1ULL << IOCSRF_EXTIOI |
- 1ULL << IOCSRF_CSRIPI;
- case VENDOR_REG:
- return 0x6e6f73676e6f6f4cULL; /* "Loongson" */
- case CPUNAME_REG:
- return 0x303030354133ULL; /* "3A5000" */
- case MISC_FUNC_REG:
- return 1ULL << IOCSRM_EXTIOI_EN;
- }
- return 0ULL;
-}
-
-static const MemoryRegionOps loongarch_qemu_ops = {
- .read = loongarch_qemu_read,
- .write = loongarch_qemu_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 8,
- },
- .impl = {
- .min_access_size = 8,
- .max_access_size = 8,
- },
-};
-#endif
-
static bool loongarch_get_lsx(Object *obj, Error **errp)
{
LoongArchCPU *cpu = LOONGARCH_CPU(obj);
@@ -713,19 +672,12 @@ static void loongarch_cpu_init(Object *obj)
{
#ifndef CONFIG_USER_ONLY
LoongArchCPU *cpu = LOONGARCH_CPU(obj);
- CPULoongArchState *env = &cpu->env;
qdev_init_gpio_in(DEVICE(cpu), loongarch_cpu_set_irq, N_IRQS);
#ifdef CONFIG_TCG
timer_init_ns(&cpu->timer, QEMU_CLOCK_VIRTUAL,
&loongarch_constant_timer_cb, cpu);
#endif
- memory_region_init_io(&env->system_iocsr, OBJECT(cpu), NULL,
- env, "iocsr", UINT64_MAX);
- address_space_init(&env->address_space_iocsr, &env->system_iocsr, "IOCSR");
- memory_region_init_io(&env->iocsr_mem, OBJECT(cpu), &loongarch_qemu_ops,
- NULL, "iocsr_misc", 0x428);
- memory_region_add_subregion(&env->system_iocsr, 0, &env->iocsr_mem);
#endif
}
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
index 8ebd6fa1a7..4aba8aba4c 100644
--- a/target/loongarch/cpu.h
+++ b/target/loongarch/cpu.h
@@ -355,9 +355,7 @@ typedef struct CPUArchState {
#ifndef CONFIG_USER_ONLY
LoongArchTLB tlb[LOONGARCH_TLB_MAX];
- AddressSpace address_space_iocsr;
- MemoryRegion system_iocsr;
- MemoryRegion iocsr_mem;
+ AddressSpace *address_space_iocsr;
bool load_elf;
uint64_t elf_address;
uint32_t mp_state;
diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c
index bd33ec2114..84bcdf5f86 100644
--- a/target/loongarch/kvm/kvm.c
+++ b/target/loongarch/kvm/kvm.c
@@ -733,7 +733,7 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
trace_kvm_arch_handle_exit(run->exit_reason);
switch (run->exit_reason) {
case KVM_EXIT_LOONGARCH_IOCSR:
- address_space_rw(&env->address_space_iocsr,
+ address_space_rw(env->address_space_iocsr,
run->iocsr_io.phys_addr,
attrs,
run->iocsr_io.data,
diff --git a/target/loongarch/tcg/iocsr_helper.c b/target/loongarch/tcg/iocsr_helper.c
index 6cd01d5f09..b6916f53d2 100644
--- a/target/loongarch/tcg/iocsr_helper.c
+++ b/target/loongarch/tcg/iocsr_helper.c
@@ -17,52 +17,52 @@
uint64_t helper_iocsrrd_b(CPULoongArchState *env, target_ulong r_addr)
{
- return address_space_ldub(&env->address_space_iocsr, r_addr,
+ return address_space_ldub(env->address_space_iocsr, r_addr,
GET_MEMTXATTRS(env), NULL);
}
uint64_t helper_iocsrrd_h(CPULoongArchState *env, target_ulong r_addr)
{
- return address_space_lduw(&env->address_space_iocsr, r_addr,
+ return address_space_lduw(env->address_space_iocsr, r_addr,
GET_MEMTXATTRS(env), NULL);
}
uint64_t helper_iocsrrd_w(CPULoongArchState *env, target_ulong r_addr)
{
- return address_space_ldl(&env->address_space_iocsr, r_addr,
+ return address_space_ldl(env->address_space_iocsr, r_addr,
GET_MEMTXATTRS(env), NULL);
}
uint64_t helper_iocsrrd_d(CPULoongArchState *env, target_ulong r_addr)
{
- return address_space_ldq(&env->address_space_iocsr, r_addr,
+ return address_space_ldq(env->address_space_iocsr, r_addr,
GET_MEMTXATTRS(env), NULL);
}
void helper_iocsrwr_b(CPULoongArchState *env, target_ulong w_addr,
target_ulong val)
{
- address_space_stb(&env->address_space_iocsr, w_addr,
+ address_space_stb(env->address_space_iocsr, w_addr,
val, GET_MEMTXATTRS(env), NULL);
}
void helper_iocsrwr_h(CPULoongArchState *env, target_ulong w_addr,
target_ulong val)
{
- address_space_stw(&env->address_space_iocsr, w_addr,
+ address_space_stw(env->address_space_iocsr, w_addr,
val, GET_MEMTXATTRS(env), NULL);
}
void helper_iocsrwr_w(CPULoongArchState *env, target_ulong w_addr,
target_ulong val)
{
- address_space_stl(&env->address_space_iocsr, w_addr,
+ address_space_stl(env->address_space_iocsr, w_addr,
val, GET_MEMTXATTRS(env), NULL);
}
void helper_iocsrwr_d(CPULoongArchState *env, target_ulong w_addr,
target_ulong val)
{
- address_space_stq(&env->address_space_iocsr, w_addr,
+ address_space_stq(env->address_space_iocsr, w_addr,
val, GET_MEMTXATTRS(env), NULL);
}
--
2.27.0
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