AMD64: LDTSTOP vs hard reset

Stefan Reinauer stepan at
Thu Nov 20 05:13:01 CET 2003


In addition to lowering the number of resets it would also be possible
to use an LDTSTOP (as I implemented it in older versions of the CVS) 
at least when doing the hypertransport link changes. 
I know that this does not work with some preproduction CPUs, but I don't
think that would really matter. BUT: Could we get rid of all CPU resets
when doing an LDTSTOP assertion (It's a lot quicker than a hard reset)
or would we still need to reset the CPU for some other reasons?


     Stefan Reinauer, SUSE LINUX AG
Teamleader Architecture Development

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