arch/x86_64/intel64: re-enable interrupts before syscall handle

apache · Nov 27, 2024 · eca40ff · eca40ff
1 parent 908ac75
commit eca40ff
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/arch/x86_64/src/common/x86_64_syscall.c b/arch/x86_64/src/common/x86_64_syscall.c
@@ -302,6 +302,15 @@ uint64_t *x86_64_syscall(uint64_t *regs)
           rtcb->xcp.saved_ursp = regs[REG_RSP];
 #endif
 
+          /* Re-enable interrupts if enabled before.
+           * Current task RFLAGS are stored in R11.
+           */
+
+          if (regs[REG_R11] & X86_64_RFLAGS_IF)
+            {
+              up_irq_restore(X86_64_RFLAGS_IF);
+            }
+
           /* Call syscall function */
 
           ret = stub(nbr, arg1, arg2, arg3, arg4, arg5, arg6);