Messages in this thread | | | Date | Wed, 28 Mar 2018 07:20:04 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH RFC tools/memory-model] Add s390.{cfg,cat} |
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On Wed, Mar 28, 2018 at 03:48:13PM +0200, Peter Zijlstra wrote: > On Wed, Mar 28, 2018 at 06:42:32AM -0700, Paul E. McKenney wrote: > > Hello! > > > > The prototype patch shown below provides files required to allow herd7 to > > evaluate C-language litmus tests for the multicopy-atomic TSO ordering > > provided by s390. > > There really isn't anything s390 specific here is there? That is, would > this not equally work for x86 and sparc, both of which are similarly TSO > ?
As I understand it, there is a difference. The difference from TSO systems such as x86 is that s390 is multicopy atomic as well as TSO. In contrast, x86 is TSO as well as other-multicopy-atomic. I must defer to Martin and Christian for details -- this should be interpreted as a feeble first attempt on my part, not any sort of IBM-approved definition of s390. ;-)
> Given that, should this not be called TSO instead of s390 ?
I agree completely with a single tso.cfg, TSO.cfg, or whatever name, as opposed to a bunch of identical files for x86, SPARC, ...
Thanx, Paul
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