x86: processor.h - use PAGE_SIZE instead of numeric value
This patch replaces numeric constant with an appropriate macro Also 0x800000000000UL is changed to bit shifting which is complement to the code comment (thanks hpa for notice) Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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