x86, xsave: use BUG_ON() instead of BUILD_BUG_ON()

All these structure sizes are runtime determined. So use a runtime
bug check.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index bb097b1644d832025a6bc453ad158fdd45d8daa0..07713d64debe2fffa7cb49e3bcd5bb129572f6a0 100644 (file)
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -82,8 +82,7 @@ int save_i387_xstate(void __user *buf)
        if (!access_ok(VERIFY_WRITE, buf, sig_xstate_size))
                return -EACCES;
 
-       BUILD_BUG_ON(sizeof(struct user_i387_struct) !=
-                       sizeof(tsk->thread.xstate->fxsave));
+       BUG_ON(sig_xstate_size < xstate_size);
 
        if ((unsigned long)buf % 64)
                printk("save_i387_xstate: bad fpstate %p\n", buf);