On Wed, Apr 10, 2002 at 04:14:08AM +0200, Rani Assaf wrote: > I was cleaning duplicate code between my port of IDT RC32355 and the > current tree. I want to use r4k_clear_page_d16() but the function uses > store double (sd) which is not available on this processor. > > What's the reason for having r4k_clear_page_xxx() use store double and > not r4k_copy_page_xxx()?? The 32-bit kernel doesn't save or restore the upper 32-bits of general purpose registers. Therefore 64-bit stores can only be used with the $zero register. Ralf
