Merge tag 'pull-loongarch-20250731' of https://github.com/gaosong715/qemu into staging

pull-loongarch-2025-0731-for 10.1

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* tag 'pull-loongarch-20250731' of https://github.com/gaosong715/qemu:
  hw/intc/loongarch_ipi: Fix start fail with smp cpu < smp maxcpus on KVM
  target/loongarch: Fix valid virtual address checking

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

2 files changed, 18 insertions, 13 deletions

diff --git a/hw/intc/loongarch_ipi_kvm.c b/hw/intc/loongarch_ipi_kvm.c
index 4cb3acc921..dd4c367abf 100644
--- a/hw/intc/loongarch_ipi_kvm.c
+++ b/hw/intc/loongarch_ipi_kvm.c
@@ -23,36 +23,41 @@ static void kvm_ipi_access_regs(void *opaque, bool write)
     LoongarchIPIState *lis = LOONGARCH_IPI(opaque);
     IPICore *core;
     uint64_t attr;
-    int cpu, fd = lis->dev_fd;
+    int i, cpu_index, fd = lis->dev_fd;
 
     if (fd == 0) {
         return;
     }
 
-    for (cpu = 0; cpu < ipi->num_cpu; cpu++) {
-        core = &ipi->cpu[cpu];
-        attr = (cpu << 16) | CORE_STATUS_OFF;
+    for (i = 0; i < ipi->num_cpu; i++) {
+        core = &ipi->cpu[i];
+        if (core->cpu == NULL) {
+            continue;
+        }
+        cpu_index = i;
+
+        attr = (cpu_index << 16) | CORE_STATUS_OFF;
         kvm_ipi_access_reg(fd, attr, &core->status, write);
 
-        attr = (cpu << 16) | CORE_EN_OFF;
+        attr = (cpu_index << 16) | CORE_EN_OFF;
         kvm_ipi_access_reg(fd, attr, &core->en, write);
 
-        attr = (cpu << 16) | CORE_SET_OFF;
+        attr = (cpu_index << 16) | CORE_SET_OFF;
         kvm_ipi_access_reg(fd, attr, &core->set, write);
 
-        attr = (cpu << 16) | CORE_CLEAR_OFF;
+        attr = (cpu_index << 16) | CORE_CLEAR_OFF;
         kvm_ipi_access_reg(fd, attr, &core->clear, write);
 
-        attr = (cpu << 16) | CORE_BUF_20;
+        attr = (cpu_index << 16) | CORE_BUF_20;
         kvm_ipi_access_reg(fd, attr, &core->buf[0], write);
 
-        attr = (cpu << 16) | CORE_BUF_28;
+        attr = (cpu_index << 16) | CORE_BUF_28;
         kvm_ipi_access_reg(fd, attr, &core->buf[2], write);
 
-        attr = (cpu << 16) | CORE_BUF_30;
+        attr = (cpu_index << 16) | CORE_BUF_30;
         kvm_ipi_access_reg(fd, attr, &core->buf[4], write);
 
-        attr = (cpu << 16) | CORE_BUF_38;
+        attr = (cpu_index << 16) | CORE_BUF_38;
         kvm_ipi_access_reg(fd, attr, &core->buf[6], write);
     }
 }
diff --git a/target/loongarch/cpu_helper.c b/target/loongarch/cpu_helper.c
index e172b11ce1..b5f732f15b 100644
--- a/target/loongarch/cpu_helper.c
+++ b/target/loongarch/cpu_helper.c
@@ -196,8 +196,8 @@ int get_physical_address(CPULoongArchState *env, hwaddr *physical,
     }
 
     /* Check valid extension */
-    addr_high = sextract64(address, TARGET_VIRT_ADDR_SPACE_BITS, 16);
-    if (!(addr_high == 0 || addr_high == -1)) {
+    addr_high = (int64_t)address >> (TARGET_VIRT_ADDR_SPACE_BITS - 1);
+    if (!(addr_high == 0 || addr_high == -1ULL)) {
         return TLBRET_BADADDR;
     }