linux: disable io_uring on hppa below kernel 6.1.51 (libuv#4224)

First kernel with support is 6.1, was only fully functional from .51 onwards: https://lore.kernel.org/all/[email protected]/ Co-authored-by: matoro <[email protected]>
abmusse · Nov 15, 2023 · f144429 · f144429
1 parent 35da5de
commit f144429
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/src/unix/linux.c b/src/unix/linux.c
@@ -487,8 +487,16 @@ static int uv__use_io_uring(void) {
   use = atomic_load_explicit(&use_io_uring, memory_order_relaxed);
 
   if (use == 0) {
+    use = uv__kernel_version() >=
+#if defined(__hppa__)
+    /* io_uring first supported on parisc in 6.1, functional in .51 */
+    /* https://lore.kernel.org/all/[email protected]/ */
+    /* 6.1.51 */ 0x060133
+#else
     /* Older kernels have a bug where the sqpoll thread uses 100% CPU. */
-    use = uv__kernel_version() >= /* 5.10.186 */ 0x050ABA ? 1 : -1;
+    /* 5.10.186 */ 0x050ABA
+#endif
+    ? 1 : -1;
 
     /* But users can still enable it if they so desire. */
     val = getenv("UV_USE_IO_URING");