fix: 判断 allow ipi

Signed-off-by: YdrMaster <[email protected]>

Author: YdrMaster

hsm-cell/src/lib.rs

@@ -137,9 +137,18 @@ impl<T> RemoteHsmCell<'_, T> {
     /// 取出当前状态。
     #[inline]
     pub fn sbi_get_status(&self) -> usize {
-        match self.0.status.load(Ordering::Acquire) {
+        match self.0.status.load(Ordering::Relaxed) {
             HART_STATE_START_PENDING_EXT => HART_STATE_START_PENDING,
             normal => normal,
         }
     }
+
+    /// 判断这个 HART 能否接收 IPI。
+    #[inline]
+    pub fn allow_ipi(&self) -> bool {
+        matches!(
+            self.0.status.load(Ordering::Relaxed),
+            HART_STATE_STARTED | HART_STATE_SUSPENDED
+        )
+    }
 }

rustsbi-qemu/src/clint.rs

@@ -1,5 +1,6 @@
 #![allow(unused)]
 
+use crate::trap_stack::remote_hsm;
 use core::cell::UnsafeCell;
 use rustsbi::{spec::binary::SbiRet, HartMask, Ipi, Timer};
 
@@ -8,10 +9,8 @@ pub(crate) struct Clint;
 impl Ipi for Clint {
     #[inline]
     fn send_ipi(&self, hart_mask: HartMask) -> SbiRet {
-        // let hsm = crate::HSM.wait();
         for i in 0..crate::NUM_HART_MAX {
-            if hart_mask.has_bit(i) {
-                //&& hsm.is_ipi_allowed(i) {
+            if hart_mask.has_bit(i) && remote_hsm(i).map_or(false, |hsm| hsm.allow_ipi()) {
                 msip::send(i);
             }
         }