| Message ID | 20160426012418.GA3927@brightrain.aerifal.cx (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 0223e5e..4fa5894 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -44,6 +44,7 @@ config SUPERH select OLD_SIGSUSPEND select OLD_SIGACTION select HAVE_ARCH_AUDITSYSCALL + select HAVE_FUTEX_CMPXCHG if FUTEX help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast
The futex cmpxchg runtime testing in kernel/futex.c depends on accesses to address 0 producing EFAULT, which obviously does not work on nommu. Since SH always has cmpxchg, disable the broken runtime detection. At some point this should be fixed at the kernel/futex.c level. UP machines can always provide a working cmpxchg with interrupt masking, and SMP cannot function without a working cmpxchg anyway. Signed-off-by: Rich Felker <dalias@libc.org> --- arch/sh/Kconfig | 1 + 1 file changed, 1 insertion(+)