Merge tag 'pull-loongarch-20240111' of https://gitlab.com/gaosong/qemu into staging

pull-loongarch-20240111

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* tag 'pull-loongarch-20240111' of https://gitlab.com/gaosong/qemu:
  hw/intc/loongarch_extioi: Add vmstate post_load support
  hw/intc/loongarch_extioi: Add dynamic cpu number support
  hw/loongarch/virt: Set iocsr address space per-board rather than percpu
  hw/intc/loongarch_ipi: Use MemTxAttrs interface for ipi ops
  target/loongarch: Add loongarch kvm into meson build
  target/loongarch: Implement set vcpu intr for kvm
  target/loongarch: Restrict TCG-specific code
  target/loongarch: Implement kvm_arch_handle_exit
  target/loongarch: Implement kvm_arch_init_vcpu
  target/loongarch: Implement kvm_arch_init function
  target/loongarch: Implement kvm get/set registers
  target/loongarch: Supplement vcpu env initial when vcpu reset
  target/loongarch: Define some kvm_arch interfaces
  linux-headers: Synchronize linux headers from linux v6.7.0-rc8

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 336 insertions, 179 deletions

diff --git a/hw/intc/loongarch_extioi.c b/hw/intc/loongarch_extioi.c
index 4fa97f0..bdfa3b4 100644
--- a/hw/intc/loongarch_extioi.c
+++ b/hw/intc/loongarch_extioi.c
@@ -8,6 +8,7 @@
 #include "qemu/osdep.h"
 #include "qemu/module.h"
 #include "qemu/log.h"
+#include "qapi/error.h"
 #include "hw/irq.h"
 #include "hw/sysbus.h"
 #include "hw/loongarch/virt.h"
@@ -32,23 +33,23 @@ static void extioi_update_irq(LoongArchExtIOI *s, int irq, int level)
         if (((s->enable[irq_index]) & irq_mask) == 0) {
             return;
         }
-        s->coreisr[cpu][irq_index] |= irq_mask;
-        found = find_first_bit(s->sw_isr[cpu][ipnum], EXTIOI_IRQS);
-        set_bit(irq, s->sw_isr[cpu][ipnum]);
+        s->cpu[cpu].coreisr[irq_index] |= irq_mask;
+        found = find_first_bit(s->cpu[cpu].sw_isr[ipnum], EXTIOI_IRQS);
+        set_bit(irq, s->cpu[cpu].sw_isr[ipnum]);
         if (found < EXTIOI_IRQS) {
             /* other irq is handling, need not update parent irq level */
             return;
         }
     } else {
-        s->coreisr[cpu][irq_index] &= ~irq_mask;
-        clear_bit(irq, s->sw_isr[cpu][ipnum]);
-        found = find_first_bit(s->sw_isr[cpu][ipnum], EXTIOI_IRQS);
+        s->cpu[cpu].coreisr[irq_index] &= ~irq_mask;
+        clear_bit(irq, s->cpu[cpu].sw_isr[ipnum]);
+        found = find_first_bit(s->cpu[cpu].sw_isr[ipnum], EXTIOI_IRQS);
         if (found < EXTIOI_IRQS) {
             /* other irq is handling, need not update parent irq level */
             return;
         }
     }
-    qemu_set_irq(s->parent_irq[cpu][ipnum], level);
+    qemu_set_irq(s->cpu[cpu].parent_irq[ipnum], level);
 }
 
 static void extioi_setirq(void *opaque, int irq, int level)
@@ -96,7 +97,7 @@ static MemTxResult extioi_readw(void *opaque, hwaddr addr, uint64_t *data,
         index = (offset - EXTIOI_COREISR_START) >> 2;
         /* using attrs to get current cpu index */
         cpu = attrs.requester_id;
-        *data = s->coreisr[cpu][index];
+        *data = s->cpu[cpu].coreisr[index];
         break;
     case EXTIOI_COREMAP_START ... EXTIOI_COREMAP_END - 1:
         index = (offset - EXTIOI_COREMAP_START) >> 2;
@@ -129,12 +130,66 @@ static inline void extioi_enable_irq(LoongArchExtIOI *s, int index,\
     }
 }
 
+static inline void extioi_update_sw_coremap(LoongArchExtIOI *s, int irq,
+                                            uint64_t val, bool notify)
+{
+    int i, cpu;
+
+    /*
+     * loongarch only support little endian,
+     * so we paresd the value with little endian.
+     */
+    val = cpu_to_le64(val);
+
+    for (i = 0; i < 4; i++) {
+        cpu = val & 0xff;
+        cpu = ctz32(cpu);
+        cpu = (cpu >= 4) ? 0 : cpu;
+        val = val >> 8;
+
+        if (s->sw_coremap[irq + i] == cpu) {
+            continue;
+        }
+
+        if (notify && test_bit(irq, (unsigned long *)s->isr)) {
+            /*
+             * lower irq at old cpu and raise irq at new cpu
+             */
+            extioi_update_irq(s, irq + i, 0);
+            s->sw_coremap[irq + i] = cpu;
+            extioi_update_irq(s, irq + i, 1);
+        } else {
+            s->sw_coremap[irq + i] = cpu;
+        }
+    }
+}
+
+static inline void extioi_update_sw_ipmap(LoongArchExtIOI *s, int index,
+                                          uint64_t val)
+{
+    int i;
+    uint8_t ipnum;
+
+    /*
+     * loongarch only support little endian,
+     * so we paresd the value with little endian.
+     */
+    val = cpu_to_le64(val);
+    for (i = 0; i < 4; i++) {
+        ipnum = val & 0xff;
+        ipnum = ctz32(ipnum);
+        ipnum = (ipnum >= 4) ? 0 : ipnum;
+        s->sw_ipmap[index * 4 + i] = ipnum;
+        val = val >> 8;
+    }
+}
+
 static MemTxResult extioi_writew(void *opaque, hwaddr addr,
                           uint64_t val, unsigned size,
                           MemTxAttrs attrs)
 {
     LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque);
-    int i, cpu, index, old_data, irq;
+    int cpu, index, old_data, irq;
     uint32_t offset;
 
     trace_loongarch_extioi_writew(addr, val);
@@ -152,20 +207,7 @@ static MemTxResult extioi_writew(void *opaque, hwaddr addr,
          */
         index = (offset - EXTIOI_IPMAP_START) >> 2;
         s->ipmap[index] = val;
-        /*
-         * loongarch only support little endian,
-         * so we paresd the value with little endian.
-         */
-        val = cpu_to_le64(val);
-        for (i = 0; i < 4; i++) {
-            uint8_t ipnum;
-            ipnum = val & 0xff;
-            ipnum = ctz32(ipnum);
-            ipnum = (ipnum >= 4) ? 0 : ipnum;
-            s->sw_ipmap[index * 4 + i] = ipnum;
-            val = val >> 8;
-        }
-
+        extioi_update_sw_ipmap(s, index, val);
         break;
     case EXTIOI_ENABLE_START ... EXTIOI_ENABLE_END - 1:
         index = (offset - EXTIOI_ENABLE_START) >> 2;
@@ -189,8 +231,8 @@ static MemTxResult extioi_writew(void *opaque, hwaddr addr,
         index = (offset - EXTIOI_COREISR_START) >> 2;
         /* using attrs to get current cpu index */
         cpu = attrs.requester_id;
-        old_data = s->coreisr[cpu][index];
-        s->coreisr[cpu][index] = old_data & ~val;
+        old_data = s->cpu[cpu].coreisr[index];
+        s->cpu[cpu].coreisr[index] = old_data & ~val;
         /* write 1 to clear interrupt */
         old_data &= val;
         irq = ctz32(old_data);
@@ -204,33 +246,8 @@ static MemTxResult extioi_writew(void *opaque, hwaddr addr,
         irq = offset - EXTIOI_COREMAP_START;
         index = irq / 4;
         s->coremap[index] = val;
-        /*
-         * loongarch only support little endian,
-         * so we paresd the value with little endian.
-         */
-        val = cpu_to_le64(val);
-
-        for (i = 0; i < 4; i++) {
-            cpu = val & 0xff;
-            cpu = ctz32(cpu);
-            cpu = (cpu >= 4) ? 0 : cpu;
-            val = val >> 8;
-
-            if (s->sw_coremap[irq + i] == cpu) {
-                continue;
-            }
-
-            if (test_bit(irq, (unsigned long *)s->isr)) {
-                /*
-                 * lower irq at old cpu and raise irq at new cpu
-                 */
-                extioi_update_irq(s, irq + i, 0);
-                s->sw_coremap[irq + i] = cpu;
-                extioi_update_irq(s, irq + i, 1);
-            } else {
-                s->sw_coremap[irq + i] = cpu;
-            }
-        }
+
+        extioi_update_sw_coremap(s, irq, val, true);
         break;
     default:
         break;
@@ -248,65 +265,112 @@ static const MemoryRegionOps extioi_ops = {
     .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
-static const VMStateDescription vmstate_loongarch_extioi = {
-    .name = TYPE_LOONGARCH_EXTIOI,
+static void loongarch_extioi_realize(DeviceState *dev, Error **errp)
+{
+    LoongArchExtIOI *s = LOONGARCH_EXTIOI(dev);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    int i, pin;
+
+    if (s->num_cpu == 0) {
+        error_setg(errp, "num-cpu must be at least 1");
+        return;
+    }
+
+    for (i = 0; i < EXTIOI_IRQS; i++) {
+        sysbus_init_irq(sbd, &s->irq[i]);
+    }
+
+    qdev_init_gpio_in(dev, extioi_setirq, EXTIOI_IRQS);
+    memory_region_init_io(&s->extioi_system_mem, OBJECT(s), &extioi_ops,
+                          s, "extioi_system_mem", 0x900);
+    sysbus_init_mmio(sbd, &s->extioi_system_mem);
+    s->cpu = g_new0(ExtIOICore, s->num_cpu);
+    if (s->cpu == NULL) {
+        error_setg(errp, "Memory allocation for ExtIOICore faile");
+        return;
+    }
+
+    for (i = 0; i < s->num_cpu; i++) {
+        for (pin = 0; pin < LS3A_INTC_IP; pin++) {
+            qdev_init_gpio_out(dev, &s->cpu[i].parent_irq[pin], 1);
+        }
+    }
+}
+
+static void loongarch_extioi_finalize(Object *obj)
+{
+    LoongArchExtIOI *s = LOONGARCH_EXTIOI(obj);
+
+    g_free(s->cpu);
+}
+
+static int vmstate_extioi_post_load(void *opaque, int version_id)
+{
+    LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque);
+    int i, start_irq;
+
+    for (i = 0; i < (EXTIOI_IRQS / 4); i++) {
+        start_irq = i * 4;
+        extioi_update_sw_coremap(s, start_irq, s->coremap[i], false);
+    }
+
+    for (i = 0; i < (EXTIOI_IRQS_IPMAP_SIZE / 4); i++) {
+        extioi_update_sw_ipmap(s, i, s->ipmap[i]);
+    }
+
+    return 0;
+}
+
+static const VMStateDescription vmstate_extioi_core = {
+    .name = "extioi-core",
     .version_id = 1,
     .minimum_version_id = 1,
     .fields = (const VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(coreisr, ExtIOICore, EXTIOI_IRQS_GROUP_COUNT),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const VMStateDescription vmstate_loongarch_extioi = {
+    .name = TYPE_LOONGARCH_EXTIOI,
+    .version_id = 2,
+    .minimum_version_id = 2,
+    .post_load = vmstate_extioi_post_load,
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT32_ARRAY(bounce, LoongArchExtIOI, EXTIOI_IRQS_GROUP_COUNT),
-        VMSTATE_UINT32_2DARRAY(coreisr, LoongArchExtIOI, EXTIOI_CPUS,
-                               EXTIOI_IRQS_GROUP_COUNT),
         VMSTATE_UINT32_ARRAY(nodetype, LoongArchExtIOI,
                              EXTIOI_IRQS_NODETYPE_COUNT / 2),
         VMSTATE_UINT32_ARRAY(enable, LoongArchExtIOI, EXTIOI_IRQS / 32),
         VMSTATE_UINT32_ARRAY(isr, LoongArchExtIOI, EXTIOI_IRQS / 32),
         VMSTATE_UINT32_ARRAY(ipmap, LoongArchExtIOI, EXTIOI_IRQS_IPMAP_SIZE / 4),
         VMSTATE_UINT32_ARRAY(coremap, LoongArchExtIOI, EXTIOI_IRQS / 4),
-        VMSTATE_UINT8_ARRAY(sw_ipmap, LoongArchExtIOI, EXTIOI_IRQS_IPMAP_SIZE),
-        VMSTATE_UINT8_ARRAY(sw_coremap, LoongArchExtIOI, EXTIOI_IRQS),
 
+        VMSTATE_STRUCT_VARRAY_POINTER_UINT32(cpu, LoongArchExtIOI, num_cpu,
+                         vmstate_extioi_core, ExtIOICore),
         VMSTATE_END_OF_LIST()
     }
 };
 
-static void loongarch_extioi_instance_init(Object *obj)
-{
-    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
-    LoongArchExtIOI *s = LOONGARCH_EXTIOI(obj);
-    int i, cpu, pin;
-
-    for (i = 0; i < EXTIOI_IRQS; i++) {
-        sysbus_init_irq(dev, &s->irq[i]);
-    }
-
-    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);
-        }
-    }
-    memory_region_init_io(&s->extioi_system_mem, OBJECT(s), &extioi_ops,
-                          s, "extioi_system_mem", 0x900);
-    sysbus_init_mmio(dev, &s->extioi_system_mem);
-}
+static Property extioi_properties[] = {
+    DEFINE_PROP_UINT32("num-cpu", LoongArchExtIOI, num_cpu, 1),
+    DEFINE_PROP_END_OF_LIST(),
+};
 
 static void loongarch_extioi_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
+    dc->realize = loongarch_extioi_realize;
+    device_class_set_props(dc, extioi_properties);
     dc->vmsd = &vmstate_loongarch_extioi;
 }
 
 static const TypeInfo loongarch_extioi_info = {
     .name          = TYPE_LOONGARCH_EXTIOI,
     .parent        = TYPE_SYS_BUS_DEVICE,
-    .instance_init = loongarch_extioi_instance_init,
     .instance_size = sizeof(struct LoongArchExtIOI),
     .class_init    = loongarch_extioi_class_init,
+    .instance_finalize = loongarch_extioi_finalize,
 };
 
 static void loongarch_extioi_register_types(void)
diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c
index a155c16..a184112 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"
@@ -17,14 +18,16 @@
 #include "target/loongarch/internals.h"
 #include "trace.h"
 
-static void loongarch_ipi_writel(void *, hwaddr, uint64_t, unsigned);
-
-static uint64_t loongarch_ipi_readl(void *opaque, hwaddr addr, unsigned size)
+static MemTxResult loongarch_ipi_readl(void *opaque, hwaddr addr,
+                                       uint64_t *data,
+                                       unsigned size, MemTxAttrs attrs)
 {
-    IPICore *s = opaque;
+    IPICore *s;
+    LoongArchIPI *ipi = opaque;
     uint64_t ret = 0;
     int index = 0;
 
+    s = &ipi->cpu[attrs.requester_id];
     addr &= 0xff;
     switch (addr) {
     case CORE_STATUS_OFF:
@@ -49,10 +52,12 @@ static uint64_t loongarch_ipi_readl(void *opaque, hwaddr addr, unsigned size)
     }
 
     trace_loongarch_ipi_read(size, (uint64_t)addr, ret);
-    return ret;
+    *data = ret;
+    return MEMTX_OK;
 }
 
-static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr)
+static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr,
+                          MemTxAttrs attrs)
 {
     int i, mask = 0, data = 0;
 
@@ -61,8 +66,8 @@ 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,
-                                 MEMTXATTRS_UNSPECIFIED, NULL);
+        data = address_space_ldl(env->address_space_iocsr, addr,
+                                 attrs, NULL);
         for (i = 0; i < 4; i++) {
             /* get mask for byte writing */
             if (val & (0x1 << (27 + i))) {
@@ -73,8 +78,8 @@ 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,
-                      data, MEMTXATTRS_UNSPECIFIED, NULL);
+    address_space_stl(env->address_space_iocsr, addr,
+                      data, attrs, NULL);
 }
 
 static int archid_cmp(const void *a, const void *b)
@@ -103,80 +108,72 @@ static CPUState *ipi_getcpu(int arch_id)
     CPUArchId *archid;
 
     archid = find_cpu_by_archid(machine, arch_id);
-    return CPU(archid->cpu);
-}
-
-static void ipi_send(uint64_t val)
-{
-    uint32_t cpuid;
-    uint8_t vector;
-    CPUState *cs;
-    LoongArchCPU *cpu;
-    LoongArchIPI *s;
-
-    cpuid = extract32(val, 16, 10);
-    if (cpuid >= LOONGARCH_MAX_CPUS) {
-        trace_loongarch_ipi_unsupported_cpuid("IOCSR_IPI_SEND", cpuid);
-        return;
+    if (archid) {
+        return CPU(archid->cpu);
     }
 
-    /* IPI status vector */
-    vector = extract8(val, 0, 5);
-
-    cs = ipi_getcpu(cpuid);
-    cpu = LOONGARCH_CPU(cs);
-    s = LOONGARCH_IPI(cpu->env.ipistate);
-    loongarch_ipi_writel(&s->ipi_core, CORE_SET_OFF, BIT(vector), 4);
+    return NULL;
 }
 
-static void mail_send(uint64_t val)
+static MemTxResult mail_send(uint64_t val, MemTxAttrs attrs)
 {
     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_MAIL_SEND", cpuid);
-        return;
+        return MEMTX_DECODE_ERROR;
     }
 
-    addr = 0x1020 + (val & 0x1c);
     cs = ipi_getcpu(cpuid);
-    cpu = LOONGARCH_CPU(cs);
-    env = &cpu->env;
-    send_ipi_data(env, val, addr);
+    if (cs == NULL) {
+        return MEMTX_DECODE_ERROR;
+    }
+
+    /* override requester_id */
+    addr = SMP_IPI_MAILBOX + CORE_BUF_20 + (val & 0x1c);
+    attrs.requester_id = cs->cpu_index;
+    send_ipi_data(&LOONGARCH_CPU(cs)->env, val, addr, attrs);
+    return MEMTX_OK;
 }
 
-static void any_send(uint64_t val)
+static MemTxResult any_send(uint64_t val, MemTxAttrs attrs)
 {
     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;
+        return MEMTX_DECODE_ERROR;
     }
 
-    addr = val & 0xffff;
     cs = ipi_getcpu(cpuid);
-    cpu = LOONGARCH_CPU(cs);
-    env = &cpu->env;
-    send_ipi_data(env, val, addr);
+    if (cs == NULL) {
+        return MEMTX_DECODE_ERROR;
+    }
+
+    /* override requester_id */
+    addr = val & 0xffff;
+    attrs.requester_id = cs->cpu_index;
+    send_ipi_data(&LOONGARCH_CPU(cs)->env, val, addr, attrs);
+    return MEMTX_OK;
 }
 
-static void loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
-                                 unsigned size)
+static MemTxResult loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
+                                        unsigned size, MemTxAttrs attrs)
 {
-    IPICore *s = opaque;
+    LoongArchIPI *ipi = opaque;
+    IPICore *s;
     int index = 0;
+    uint32_t cpuid;
+    uint8_t vector;
+    CPUState *cs;
 
+    s = &ipi->cpu[attrs.requester_id];
     addr &= 0xff;
     trace_loongarch_ipi_write(size, (uint64_t)addr, val);
     switch (addr) {
@@ -203,17 +200,34 @@ static void loongarch_ipi_writel(void *opaque, hwaddr addr, uint64_t val,
         s->buf[index] = val;
         break;
     case IOCSR_IPI_SEND:
-        ipi_send(val);
+        cpuid = extract32(val, 16, 10);
+        if (cpuid >= LOONGARCH_MAX_CPUS) {
+            trace_loongarch_ipi_unsupported_cpuid("IOCSR_IPI_SEND", cpuid);
+            return MEMTX_DECODE_ERROR;
+        }
+
+        /* IPI status vector */
+        vector = extract8(val, 0, 5);
+        cs = ipi_getcpu(cpuid);
+        if (cs == NULL) {
+            return MEMTX_DECODE_ERROR;
+        }
+
+        /* override requester_id */
+        attrs.requester_id = cs->cpu_index;
+        loongarch_ipi_writel(ipi, CORE_SET_OFF, BIT(vector), 4, attrs);
         break;
     default:
         qemu_log_mask(LOG_UNIMP, "invalid write: %x", (uint32_t)addr);
         break;
     }
+
+    return MEMTX_OK;
 }
 
 static const MemoryRegionOps loongarch_ipi_ops = {
-    .read = loongarch_ipi_readl,
-    .write = loongarch_ipi_writel,
+    .read_with_attrs = loongarch_ipi_readl,
+    .write_with_attrs = loongarch_ipi_writel,
     .impl.min_access_size = 4,
     .impl.max_access_size = 4,
     .valid.min_access_size = 4,
@@ -222,24 +236,28 @@ static const MemoryRegionOps loongarch_ipi_ops = {
 };
 
 /* mail send and any send only support writeq */
-static void loongarch_ipi_writeq(void *opaque, hwaddr addr, uint64_t val,
-                                 unsigned size)
+static MemTxResult loongarch_ipi_writeq(void *opaque, hwaddr addr, uint64_t val,
+                                        unsigned size, MemTxAttrs attrs)
 {
+    MemTxResult ret = MEMTX_OK;
+
     addr &= 0xfff;
     switch (addr) {
     case MAIL_SEND_OFFSET:
-        mail_send(val);
+        ret = mail_send(val, attrs);
         break;
     case ANY_SEND_OFFSET:
-        any_send(val);
+        ret = any_send(val, attrs);
         break;
     default:
        break;
     }
+
+    return ret;
 }
 
 static const MemoryRegionOps loongarch_ipi64_ops = {
-    .write = loongarch_ipi_writeq,
+    .write_with_attrs = loongarch_ipi_writeq,
     .impl.min_access_size = 8,
     .impl.max_access_size = 8,
     .valid.min_access_size = 8,
@@ -247,23 +265,39 @@ 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,
-                          &s->ipi_core, "loongarch_ipi_iocsr", 0x48);
+    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 */
     s->ipi_iocsr_mem.disable_reentrancy_guard = true;
 
     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);
+    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 = {
@@ -282,27 +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,
+    .version_id = 2,
+    .minimum_version_id = 2,
     .fields = (const VMStateField[]) {
-        VMSTATE_STRUCT(ipi_core, LoongArchIPI, 0, vmstate_ipi_core, IPICore),
+        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 4b7dc67..c9a680e 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:
      *   +-----+    +---------+     +-------+
@@ -559,41 +556,42 @@ 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);
+    qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus);
+    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]
      */
-    for (cpu = 0; cpu < MIN(ms->smp.cpus, EXTIOI_CPUS); cpu++) {
+    for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
         cpudev = DEVICE(qemu_get_cpu(cpu));
         for (pin = 0; pin < LS3A_INTC_IP; pin++) {
             qdev_connect_gpio_out(extioi, (cpu * 8 + pin),
@@ -733,6 +731,43 @@ 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 +796,17 @@ 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);