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sparc: Align clone and signal stacks to 16 bytes.

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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>
This commit is contained in:
David S. Miller
2010-02-09 16:18:40 -08:00
parent 6abce7711f
commit f036d9f398
5 changed files with 20 additions and 14 deletions
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2
arch/sparc/kernel/process_32.c
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@@ -526,7 +526,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
* Set some valid stack frames to give to the child.
*/
childstack = (struct sparc_stackf __user *)
(sp & ~0x7UL);
(sp & ~0x15UL);
parentstack = (struct sparc_stackf __user *)
regs->u_regs[UREG_FP];