mtrr_add_page
extern int mtrr_add_page(unsigned long base, unsigned long size,
err = mtrr_add_page((unsigned long)base, (unsigned long)size, i, true);
mtrr_add_page(sentry.base, sentry.size, sentry.type, false);
reg = mtrr_add_page(base, size, type, true);
return mtrr_add_page(base >> PAGE_SHIFT, size >> PAGE_SHIFT, type,