diff options
Diffstat (limited to 'target/riscv/csr.c')
| -rw-r--r-- | target/riscv/csr.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 9a40b4c..385bb38 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -550,16 +550,10 @@ static int rmw_mip(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask) { RISCVCPU *cpu = riscv_env_get_cpu(env); - target_ulong mask = write_mask & delegable_ints; + /* Allow software control of delegable interrupts not claimed by hardware */ + target_ulong mask = write_mask & delegable_ints & ~env->miclaim; uint32_t old_mip; - /* We can't allow the supervisor to control SEIP as this would allow the - * supervisor to clear a pending external interrupt which will result in - * lost a interrupt in the case a PLIC is attached. The SEIP bit must be - * hardware controlled when a PLIC is attached. This should be an option - * for CPUs with software-delegated Supervisor External Interrupts. */ - mask &= ~MIP_SEIP; - if (mask) { qemu_mutex_lock_iothread(); old_mip = riscv_cpu_update_mip(cpu, mask, (new_value & mask)); |