PCI hotplug SCI fixkvm-84rc1

Generate interrupt only if corespondent EN bit is set.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/hw/acpi.c b/hw/acpi.c
index 5597fd0d9..023b31780 100644
--- a/hw/acpi.c
+++ b/hw/acpi.c
@@ -811,25 +811,26 @@ void qemu_system_cpu_hot_add(int cpu, int state)
 static void enable_device(struct pci_status *p, struct gpe_regs *g, int slot)
 {
     g->sts |= 2;
-    g->en |= 2;
     p->up |= (1 << slot);
 }
 
 static void disable_device(struct pci_status *p, struct gpe_regs *g, int slot)
 {
     g->sts |= 2;
-    g->en |= 2;
     p->down |= (1 << slot);
 }
 
 void qemu_system_device_hot_add(int pcibus, int slot, int state)
 {
-    qemu_set_irq(pm_state->irq, 1);
     pci0_status.up = 0;
     pci0_status.down = 0;
     if (state)
         enable_device(&pci0_status, &gpe, slot);
     else
         disable_device(&pci0_status, &gpe, slot);
-    qemu_set_irq(pm_state->irq, 0);
+
+    if (gpe.en & 2) {
+        qemu_set_irq(pm_state->irq, 1);
+        qemu_set_irq(pm_state->irq, 0);
+    }
 }