Re: [PATCH v4] linux-user: Add close_range() syscall

[Richard Henderson]

On 10/25/22 06:43, Helge Deller wrote:
+            abi_long maxfd = arg2;
+
+            if ((sizeof(abi_long) == 4 && arg2 == (abi_long)0x7FFFFFFFUL) ||
+                (sizeof(abi_long) == 8 && arg2 == 
(abi_long)0x7FFFFFFFFFFFFFFFULL)) {
+                maxfd = target_fd_max;
+            }
+
+            for (fd = arg1; fd < maxfd; fd++) {

Why do we need explicit checks for INT32/64_MAX?  If the guest passes 
0x7FFFFFFFFFFFFFFEULL, do we really need to iterate over all of those impossible values?

I should think some expression involving MIN() is in order.


r~