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-rw-r--r--hw/intc/sifive_plic.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/hw/intc/sifive_plic.c b/hw/intc/sifive_plic.c
index af4ae3630e..f864efa761 100644
--- a/hw/intc/sifive_plic.c
+++ b/hw/intc/sifive_plic.c
@@ -180,8 +180,10 @@ static void sifive_plic_write(void *opaque, hwaddr addr, uint64_t value,
if (addr_between(addr, plic->priority_base, plic->num_sources << 2)) {
uint32_t irq = ((addr - plic->priority_base) >> 2) + 1;
- plic->source_priority[irq] = value & 7;
- sifive_plic_update(plic);
+ if (value <= plic->num_priorities) {
+ plic->source_priority[irq] = value;
+ sifive_plic_update(plic);
+ }
} else if (addr_between(addr, plic->pending_base,
plic->num_sources >> 3)) {
qemu_log_mask(LOG_GUEST_ERROR,