[PATCH v2 0/3] LoongArch machine support Set max 256 cpus.

[PATCH v2 0/3] LoongArch machine support Set max 256 cpus.

[Song Gao]

v2:
  - R-B;
  - Add trace.

Song Gao (3):
  hw/loongarch/virt: Modify ipi as percpu device
  hw/loongarch/virt: Set max 256 cpus support on loongarch virt machine
  hw/intc: Add NULL pointer check on LoongArch ipi device

 hw/intc/loongarch_extioi.c         |  4 +-
 hw/intc/loongarch_ipi.c            | 84 ++++++++++++++++--------------
 hw/intc/trace-events               |  1 +
 hw/loongarch/virt.c                | 25 +++++----
 include/hw/intc/loongarch_extioi.h | 10 ++--
 include/hw/intc/loongarch_ipi.h    | 10 ++--
 include/hw/loongarch/virt.h        |  3 +-
 7 files changed, 74 insertions(+), 63 deletions(-)

-- 
2.39.1

[PATCH v2 1/3] hw/loongarch/virt: Modify ipi as percpu device

[Song Gao]

ipi is used to communicate between cpus, this patch modified
loongarch ipi device as percpu deivce, so that there are
2 MemoryRegions with ipi device, rather than 2*cpus
MemoryRegions, which may be large than QDEV_MAX_MMIO if
more cpus are added on loongarch virt machine.

Signed-off-by: Song Gao <gaosong@loongson.cn>
---
 hw/intc/loongarch_ipi.c         | 44 ++++++++++++---------------------
 hw/loongarch/virt.c             | 12 ++++-----
 include/hw/intc/loongarch_ipi.h | 10 +++-----
 include/hw/loongarch/virt.h     |  1 -
 4 files changed, 26 insertions(+), 41 deletions(-)

diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c
index 9de7c01e11..054e143842 100644
--- a/hw/intc/loongarch_ipi.c
+++ b/hw/intc/loongarch_ipi.c
@@ -201,55 +201,43 @@ static const MemoryRegionOps loongarch_ipi64_ops = {
 
 static void loongarch_ipi_init(Object *obj)
 {
-    int cpu;
-    LoongArchMachineState *lams;
     LoongArchIPI *s = LOONGARCH_IPI(obj);
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
-    Object *machine = qdev_get_machine();
-    ObjectClass *mc = object_get_class(machine);
-    /* 'lams' should be initialized */
-    if (!strcmp(MACHINE_CLASS(mc)->name, "none")) {
-        return;
-    }
-    lams = LOONGARCH_MACHINE(machine);
-    for (cpu = 0; cpu < MAX_IPI_CORE_NUM; cpu++) {
-        memory_region_init_io(&s->ipi_iocsr_mem[cpu], obj, &loongarch_ipi_ops,
-                            &lams->ipi_core[cpu], "loongarch_ipi_iocsr", 0x48);
 
-        /* loongarch_ipi_iocsr performs re-entrant IO through ipi_send */
-        s->ipi_iocsr_mem[cpu].disable_reentrancy_guard = true;
+    memory_region_init_io(&s->ipi_iocsr_mem, obj, &loongarch_ipi_ops,
+                          &s->ipi_core, "loongarch_ipi_iocsr", 0x48);
 
-        sysbus_init_mmio(sbd, &s->ipi_iocsr_mem[cpu]);
+    /* loongarch_ipi_iocsr performs re-entrant IO through ipi_send */
+    s->ipi_iocsr_mem.disable_reentrancy_guard = true;
 
-        memory_region_init_io(&s->ipi64_iocsr_mem[cpu], obj, &loongarch_ipi64_ops,
-                              &lams->ipi_core[cpu], "loongarch_ipi64_iocsr", 0x118);
-        sysbus_init_mmio(sbd, &s->ipi64_iocsr_mem[cpu]);
-        qdev_init_gpio_out(DEVICE(obj), &lams->ipi_core[cpu].irq, 1);
-    }
+    sysbus_init_mmio(sbd, &s->ipi_iocsr_mem);
+
+    memory_region_init_io(&s->ipi64_iocsr_mem, obj, &loongarch_ipi64_ops,
+                          &s->ipi_core, "loongarch_ipi64_iocsr", 0x118);
+    sysbus_init_mmio(sbd, &s->ipi64_iocsr_mem);
+    qdev_init_gpio_out(DEVICE(obj), &s->ipi_core.irq, 1);
 }
 
 static const VMStateDescription vmstate_ipi_core = {
     .name = "ipi-single",
-    .version_id = 0,
-    .minimum_version_id = 0,
+    .version_id = 1,
+    .minimum_version_id = 1,
     .fields = (VMStateField[]) {
         VMSTATE_UINT32(status, IPICore),
         VMSTATE_UINT32(en, IPICore),
         VMSTATE_UINT32(set, IPICore),
         VMSTATE_UINT32(clear, IPICore),
-        VMSTATE_UINT32_ARRAY(buf, IPICore, MAX_IPI_MBX_NUM * 2),
+        VMSTATE_UINT32_ARRAY(buf, IPICore, 2),
         VMSTATE_END_OF_LIST()
     }
 };
 
 static const VMStateDescription vmstate_loongarch_ipi = {
     .name = TYPE_LOONGARCH_IPI,
-    .version_id = 0,
-    .minimum_version_id = 0,
+    .version_id = 1,
+    .minimum_version_id = 1,
     .fields = (VMStateField[]) {
-        VMSTATE_STRUCT_ARRAY(ipi_core, LoongArchMachineState,
-                             MAX_IPI_CORE_NUM, 0,
-                             vmstate_ipi_core, IPICore),
+        VMSTATE_STRUCT(ipi_core, LoongArchIPI, 0, vmstate_ipi_core, IPICore),
         VMSTATE_END_OF_LIST()
     }
 };
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index f4bf14c1c8..c8a01b1fb6 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -565,9 +565,6 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
     CPUState *cpu_state;
     int cpu, pin, i, start, num;
 
-    ipi = qdev_new(TYPE_LOONGARCH_IPI);
-    sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
-
     extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
 
@@ -598,15 +595,18 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
         lacpu = LOONGARCH_CPU(cpu_state);
         env = &(lacpu->env);
 
+        ipi = qdev_new(TYPE_LOONGARCH_IPI);
+        sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
+
         /* connect ipi irq to cpu irq */
-        qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI));
+        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),
-                                    cpu * 2));
+                                    0));
         memory_region_add_subregion(&env->system_iocsr, MAIL_SEND_ADDR,
                                     sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
-                                    cpu * 2 + 1));
+                                    1));
         /* extioi iocsr memory region */
         memory_region_add_subregion(&env->system_iocsr, APIC_BASE,
                                 sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi),
diff --git a/include/hw/intc/loongarch_ipi.h b/include/hw/intc/loongarch_ipi.h
index 0ee48fca55..664e050b92 100644
--- a/include/hw/intc/loongarch_ipi.h
+++ b/include/hw/intc/loongarch_ipi.h
@@ -28,9 +28,6 @@
 #define MAIL_SEND_OFFSET      0
 #define ANY_SEND_OFFSET       (IOCSR_ANY_SEND - IOCSR_MAIL_SEND)
 
-#define MAX_IPI_CORE_NUM      4
-#define MAX_IPI_MBX_NUM       4
-
 #define TYPE_LOONGARCH_IPI "loongarch_ipi"
 OBJECT_DECLARE_SIMPLE_TYPE(LoongArchIPI, LOONGARCH_IPI)
 
@@ -40,14 +37,15 @@ typedef struct IPICore {
     uint32_t set;
     uint32_t clear;
     /* 64bit buf divide into 2 32bit buf */
-    uint32_t buf[MAX_IPI_MBX_NUM * 2];
+    uint32_t buf[2];
     qemu_irq irq;
 } IPICore;
 
 struct LoongArchIPI {
     SysBusDevice parent_obj;
-    MemoryRegion ipi_iocsr_mem[MAX_IPI_CORE_NUM];
-    MemoryRegion ipi64_iocsr_mem[MAX_IPI_CORE_NUM];
+    MemoryRegion ipi_iocsr_mem;
+    MemoryRegion ipi64_iocsr_mem;
+    IPICore ipi_core;
 };
 
 #endif
diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h
index 7ae8a91229..54a9f595bb 100644
--- a/include/hw/loongarch/virt.h
+++ b/include/hw/loongarch/virt.h
@@ -36,7 +36,6 @@ struct LoongArchMachineState {
     /*< private >*/
     MachineState parent_obj;
 
-    IPICore ipi_core[MAX_IPI_CORE_NUM];
     MemoryRegion lowmem;
     MemoryRegion highmem;
     MemoryRegion isa_io;
-- 
2.39.1

[PATCH v2 2/3] hw/loongarch/virt: Set max 256 cpus support on loongarch virt machine

[Song Gao]

Add separate macro EXTIOI_CPUS for extioi interrupt controller, extioi
only supports 4 cpu. And set macro LOONGARCH_MAX_CPUS as 256 so that
loongarch virt machine supports more cpus.

Interrupts from external devices can only be routed cpu 0-3 because
of extioi limits, cpu internal interrupt such as timer/ipi can be
triggered on all cpus.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
---
 hw/intc/loongarch_extioi.c         |  4 ++--
 hw/loongarch/virt.c                | 13 +++++++++----
 include/hw/intc/loongarch_extioi.h | 10 ++++++----
 include/hw/loongarch/virt.h        |  2 +-
 4 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/hw/intc/loongarch_extioi.c b/hw/intc/loongarch_extioi.c
index 4b8ec3f28a..0e7a3e32f3 100644
--- a/hw/intc/loongarch_extioi.c
+++ b/hw/intc/loongarch_extioi.c
@@ -254,7 +254,7 @@ static const VMStateDescription vmstate_loongarch_extioi = {
     .minimum_version_id = 1,
     .fields = (VMStateField[]) {
         VMSTATE_UINT32_ARRAY(bounce, LoongArchExtIOI, EXTIOI_IRQS_GROUP_COUNT),
-        VMSTATE_UINT32_2DARRAY(coreisr, LoongArchExtIOI, LOONGARCH_MAX_VCPUS,
+        VMSTATE_UINT32_2DARRAY(coreisr, LoongArchExtIOI, EXTIOI_CPUS,
                                EXTIOI_IRQS_GROUP_COUNT),
         VMSTATE_UINT32_ARRAY(nodetype, LoongArchExtIOI,
                              EXTIOI_IRQS_NODETYPE_COUNT / 2),
@@ -281,7 +281,7 @@ static void loongarch_extioi_instance_init(Object *obj)
 
     qdev_init_gpio_in(DEVICE(obj), extioi_setirq, EXTIOI_IRQS);
 
-    for (cpu = 0; cpu < LOONGARCH_MAX_VCPUS; cpu++) {
+    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(SYS_BUS_DEVICE(dev), &s->extioi_iocsr_mem[cpu]);
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c
index c8a01b1fb6..2b7588e32a 100644
--- a/hw/loongarch/virt.c
+++ b/hw/loongarch/virt.c
@@ -607,8 +607,13 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
         memory_region_add_subregion(&env->system_iocsr, MAIL_SEND_ADDR,
                                     sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
                                     1));
-        /* extioi iocsr memory region */
-        memory_region_add_subregion(&env->system_iocsr, APIC_BASE,
+        /*
+	 * 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));
     }
@@ -617,7 +622,7 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
      * connect ext irq to the cpu irq
      * cpu_pin[9:2] <= intc_pin[7:0]
      */
-    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
+    for (cpu = 0; cpu < MIN(ms->smp.cpus, EXTIOI_CPUS); cpu++) {
         cpudev = DEVICE(qemu_get_cpu(cpu));
         for (pin = 0; pin < LS3A_INTC_IP; pin++) {
             qdev_connect_gpio_out(extioi, (cpu * 8 + pin),
@@ -1026,7 +1031,7 @@ static void loongarch_class_init(ObjectClass *oc, void *data)
     mc->default_ram_size = 1 * GiB;
     mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464");
     mc->default_ram_id = "loongarch.ram";
-    mc->max_cpus = LOONGARCH_MAX_VCPUS;
+    mc->max_cpus = LOONGARCH_MAX_CPUS;
     mc->is_default = 1;
     mc->default_kernel_irqchip_split = false;
     mc->block_default_type = IF_VIRTIO;
diff --git a/include/hw/intc/loongarch_extioi.h b/include/hw/intc/loongarch_extioi.h
index 15b8c999f6..fbdef9a7b3 100644
--- a/include/hw/intc/loongarch_extioi.h
+++ b/include/hw/intc/loongarch_extioi.h
@@ -14,6 +14,8 @@
 #define LS3A_INTC_IP               8
 #define EXTIOI_IRQS                (256)
 #define EXTIOI_IRQS_BITMAP_SIZE    (256 / 8)
+/* irq from EXTIOI is routed to no more than 4 cpus */
+#define EXTIOI_CPUS                (4)
 /* map to ipnum per 32 irqs */
 #define EXTIOI_IRQS_IPMAP_SIZE     (256 / 32)
 #define EXTIOI_IRQS_COREMAP_SIZE   256
@@ -46,17 +48,17 @@ struct LoongArchExtIOI {
     uint32_t nodetype[EXTIOI_IRQS_NODETYPE_COUNT / 2];
     uint32_t bounce[EXTIOI_IRQS_GROUP_COUNT];
     uint32_t isr[EXTIOI_IRQS / 32];
-    uint32_t coreisr[LOONGARCH_MAX_VCPUS][EXTIOI_IRQS_GROUP_COUNT];
+    uint32_t coreisr[EXTIOI_CPUS][EXTIOI_IRQS_GROUP_COUNT];
     uint32_t enable[EXTIOI_IRQS / 32];
     uint32_t ipmap[EXTIOI_IRQS_IPMAP_SIZE / 4];
     uint32_t coremap[EXTIOI_IRQS / 4];
     uint32_t sw_pending[EXTIOI_IRQS / 32];
-    DECLARE_BITMAP(sw_isr[LOONGARCH_MAX_VCPUS][LS3A_INTC_IP], EXTIOI_IRQS);
+    DECLARE_BITMAP(sw_isr[EXTIOI_CPUS][LS3A_INTC_IP], EXTIOI_IRQS);
     uint8_t  sw_ipmap[EXTIOI_IRQS_IPMAP_SIZE];
     uint8_t  sw_coremap[EXTIOI_IRQS];
-    qemu_irq parent_irq[LOONGARCH_MAX_VCPUS][LS3A_INTC_IP];
+    qemu_irq parent_irq[EXTIOI_CPUS][LS3A_INTC_IP];
     qemu_irq irq[EXTIOI_IRQS];
-    MemoryRegion extioi_iocsr_mem[LOONGARCH_MAX_VCPUS];
+    MemoryRegion extioi_iocsr_mem[EXTIOI_CPUS];
     MemoryRegion extioi_system_mem;
 };
 #endif /* LOONGARCH_EXTIOI_H */
diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h
index 54a9f595bb..f1659655c6 100644
--- a/include/hw/loongarch/virt.h
+++ b/include/hw/loongarch/virt.h
@@ -14,7 +14,7 @@
 #include "hw/intc/loongarch_ipi.h"
 #include "hw/block/flash.h"
 
-#define LOONGARCH_MAX_VCPUS     4
+#define LOONGARCH_MAX_CPUS      256
 
 #define VIRT_ISA_IO_BASE        0x18000000UL
 #define VIRT_ISA_IO_SIZE        0x0004000
-- 
2.39.1

[PATCH v2 3/3] hw/intc: Add NULL pointer check on LoongArch ipi device

[Song Gao]

When ipi mailbox is used, cpu_index is decoded from iocsr register.
cpu maybe does not exist. This patch adss NULL pointer check on
ipi device.

Signed-off-by: Song Gao <gaosong@loongson.cn>
---
 hw/intc/loongarch_ipi.c | 40 +++++++++++++++++++++++++++++-----------
 hw/intc/trace-events    |  1 +
 2 files changed, 30 insertions(+), 11 deletions(-)

diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c
index 054e143842..d6ab91721e 100644
--- a/hw/intc/loongarch_ipi.c
+++ b/hw/intc/loongarch_ipi.c
@@ -77,31 +77,42 @@ static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr)
 
 static void ipi_send(uint64_t val)
 {
-    int cpuid, data;
+    uint32_t cpuid;
+    uint8_t vector;
     CPULoongArchState *env;
     CPUState *cs;
     LoongArchCPU *cpu;
 
-    cpuid = (val >> 16) & 0x3ff;
+    cpuid = extract32(val, 16, 10);
+    if (cpuid >= LOONGARCH_MAX_CPUS) {
+        trace_loongarch_ipi_unsupported_cpuid("IOCSR_IPI_SEND", cpuid);
+        return;
+    }
+
     /* IPI status vector */
-    data = 1 << (val & 0x1f);
+    vector = extract8(val, 0, 5);
+
     cs = qemu_get_cpu(cpuid);
     cpu = LOONGARCH_CPU(cs);
     env = &cpu->env;
     address_space_stl(&env->address_space_iocsr, 0x1008,
-                      data, MEMTXATTRS_UNSPECIFIED, NULL);
-
+                      BIT(vector), MEMTXATTRS_UNSPECIFIED, NULL);
 }
 
 static void mail_send(uint64_t val)
 {
-    int cpuid;
+    uint32_t cpuid;
     hwaddr addr;
     CPULoongArchState *env;
     CPUState *cs;
     LoongArchCPU *cpu;
 
-    cpuid = (val >> 16) & 0x3ff;
+    cpuid = extract32(val, 16, 10);
+    if (cpuid >= LOONGARCH_MAX_CPUS) {
+        trace_loongarch_ipi_unsupported_cpuid("IOCSR_MAIL_SEND", cpuid);
+        return;
+    }
+
     addr = 0x1020 + (val & 0x1c);
     cs = qemu_get_cpu(cpuid);
     cpu = LOONGARCH_CPU(cs);
@@ -111,14 +122,21 @@ static void mail_send(uint64_t val)
 
 static void any_send(uint64_t val)
 {
-    int cpuid;
+    uint32_t cpuid;
     hwaddr addr;
     CPULoongArchState *env;
+    CPUState *cs;
+    LoongArchCPU *cpu;
+
+    cpuid = extract32(val, 16, 10);
+    if (cpuid >= LOONGARCH_MAX_CPUS) {
+        trace_loongarch_ipi_unsupported_cpuid("IOCSR_ANY_SEND", cpuid);
+        return;
+    }
 
-    cpuid = (val >> 16) & 0x3ff;
     addr = val & 0xffff;
-    CPUState *cs = qemu_get_cpu(cpuid);
-    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+    cs = qemu_get_cpu(cpuid);
+    cpu = LOONGARCH_CPU(cs);
     env = &cpu->env;
     send_ipi_data(env, val, addr);
 }
diff --git a/hw/intc/trace-events b/hw/intc/trace-events
index 50cadfb996..5c6094c457 100644
--- a/hw/intc/trace-events
+++ b/hw/intc/trace-events
@@ -292,6 +292,7 @@ sh_intc_set(int id, int enable) "setting interrupt group %d to %d"
 # loongarch_ipi.c
 loongarch_ipi_read(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
 loongarch_ipi_write(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64
+loongarch_ipi_unsupported_cpuid(const char *s, uint32_t cpuid) "%s unsupported cpuid 0x%" PRIx32
 
 # loongarch_pch_pic.c
 loongarch_pch_pic_irq_handler(int irq, int level) "irq %d level %d"
-- 
2.39.1

Re: [PATCH v2 3/3] hw/intc: Add NULL pointer check on LoongArch ipi device

[Philippe Mathieu-Daudé]

On 12/5/23 12:04, Song Gao wrote:
> When ipi mailbox is used, cpu_index is decoded from iocsr register.
> cpu maybe does not exist. This patch adss NULL pointer check on

"adds"

> ipi device.
> 
> Signed-off-by: Song Gao <gaosong@loongson.cn>
> ---
>   hw/intc/loongarch_ipi.c | 40 +++++++++++++++++++++++++++++-----------
>   hw/intc/trace-events    |  1 +
>   2 files changed, 30 insertions(+), 11 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

Re: [PATCH v2 1/3] hw/loongarch/virt: Modify ipi as percpu device

[Philippe Mathieu-Daudé]

On 12/5/23 12:04, Song Gao wrote:
> ipi is used to communicate between cpus, this patch modified
> loongarch ipi device as percpu deivce, so that there are

"device"

> 2 MemoryRegions with ipi device, rather than 2*cpus
> MemoryRegions, which may be large than QDEV_MAX_MMIO if
> more cpus are added on loongarch virt machine.
> 
> Signed-off-by: Song Gao <gaosong@loongson.cn>
> ---
>   hw/intc/loongarch_ipi.c         | 44 ++++++++++++---------------------
>   hw/loongarch/virt.c             | 12 ++++-----
>   include/hw/intc/loongarch_ipi.h | 10 +++-----
>   include/hw/loongarch/virt.h     |  1 -
>   4 files changed, 26 insertions(+), 41 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>

Re: [PATCH v2 3/3] hw/intc: Add NULL pointer check on LoongArch ipi device

[Richard Henderson]

On 5/12/23 03:04, Song Gao wrote:
> When ipi mailbox is used, cpu_index is decoded from iocsr register.
> cpu maybe does not exist. This patch adss NULL pointer check on
> ipi device.
> 
> Signed-off-by: Song Gao<gaosong@loongson.cn>
> ---
>   hw/intc/loongarch_ipi.c | 40 +++++++++++++++++++++++++++++-----------
>   hw/intc/trace-events    |  1 +
>   2 files changed, 30 insertions(+), 11 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~