RISC-V: don't assume PI mutexes and robust futexes before 4.20 (bug 23864)
Commit Message
Support for futex_cmpxchg as only been added to 4.20-rc1.
Andreas.
[BZ #23864]
* sysdeps/unix/sysv/linux/riscv/kernel-features.h
(__ASSUME_SET_ROBUST_LIST) [__LINUX_KERNEL_VERSION < 0x041400]:
Undef.
---
sysdeps/unix/sysv/linux/riscv/kernel-features.h | 5 +++++
1 file changed, 5 insertions(+)
@@ -21,3 +21,8 @@
#undef __ASSUME_CLONE_DEFAULT
#define __ASSUME_CLONE_BACKWARDS 1
+
+/* No support for PI mutexes or robust futexes before 4.20. */
+#if __LINUX_KERNEL_VERSION < 0x041400
+# undef __ASSUME_SET_ROBUST_LIST
+#endif