sparc: Align clone and signal stacks to 16 bytes.
This is mandatory for 64-bit processes, and doing it also for 32-bit
processes saves a conditional in the compat case.
This fixes the glibc/nptl/tst-stdio1 test case, as well
as many others, on 64-bit.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index 18d6785..6679eeb 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -406,11 +406,11 @@
} else
__get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6]));
- /* Now 8-byte align the stack as this is mandatory in the
- * Sparc ABI due to how register windows work. This hides
- * the restriction from thread libraries etc. -DaveM
+ /* Now align the stack as this is mandatory in the Sparc ABI
+ * due to how register windows work. This hides the
+ * restriction from thread libraries etc.
*/
- csp &= ~7UL;
+ csp &= ~15UL;
distance = fp - psp;
rval = (csp - distance);