The old code cuts off the higher bits in CR4 (such as X86_CR4_OSFXSR,
X86_CR4_OSXMMEXCPT).

Signed-off-by: leendert@watson.ibm.com
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>