ARMv8 getting atomic operations

By: Maynard Handley (name99.delete@this.name99.org), December 2, 2014 7:33 pm
Room: Moderated Discussions
dmcq (dmcq.delete@this.fano.co.uk) on December 2, 2014 5:32 pm wrote:
> It seems ARM have decided that atomic operations are a good idea
>
> http://community.arm.com/groups/processors/blog/2014/12/02/the-armv8-a-architecture-and-its-ongoing-development
>
> they are sticking a whole load of atomic operations into their 64 bit ARM architecture as
> well as the current acquire and release and memory exclusive ones. I'd guess so the operation
> can be exported to the cache or whereever and done there quickly but it is interesting that
> they think it worthwhile to implement these as well as all the other special memory operations
> they have. They will now have a quite amazing range of memory access operations.
>
> The link also describes a number of other additions they are making, they seem to be targetting
> large systems. Still no transactional memory or decimal floating point like POWER yet though ;-)

Hmm. Interesting in light of the rumors (RUMORS!) that the mythical large screen iPad is due in about six months and with an A9 (rather than the expected A8X) SoC. That certainly gives one (admittedly not overwhelming) reason why Apple might want to rush forward with a new core faster than expected, and perhaps why the A8 was so much just a tweaked A7.
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ARMv8 getting atomic operationsdmcq2014/12/02 05:32 PM
  ARMv8 getting atomic operationsMaynard Handley2014/12/02 07:33 PM
    ARMv8 getting atomic operationsDoug S2014/12/02 10:30 PM
      ARMv8 getting atomic operationsdmcq2014/12/03 03:16 AM
      ARMv8 getting atomic operationsMaynard Handley2014/12/03 09:20 AM
      ARMv8 getting atomic operationsBrett2014/12/03 04:46 PM
    ARMv8 getting atomic operationsAndreas2014/12/03 06:51 AM
      ARMv8 getting atomic operationsLinus Torvalds2014/12/03 11:15 AM
        ARMv8 getting atomic operationsanon2014/12/03 05:08 PM
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                                            Why read RWT or Reddit when you can get journalists to do it for you?Rob Thorpe2015/01/02 08:20 AM
                                              Why read RWT or Reddit when you can get journalists to do it for you?juanrga2015/01/02 11:21 AM
                                                Why read RWT or Reddit when you can get journalists to do it for you?EduardoS2015/01/02 11:37 AM
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                                                        Why read RWT or Reddit when you can get journalists to do it for you?Eric Bron2015/01/03 02:54 PM
                                                          Why read RWT or Reddit when you can get journalists to do it for you?juanrga2015/01/07 05:48 AM
                                                            Why read RWT or Reddit when you can get journalists to do it for you?Eric Bron2015/01/07 07:41 AM
                                                              Manycores vs multicoresjuanrga2015/01/10 04:14 PM
                                                    Why read RWT or Reddit when you can get journalists to do it for you?Eric Bron2015/01/03 02:42 PM
                                                      Why read RWT or Reddit when you can get journalists to do it for you?juanrga2015/01/07 06:03 AM
                                                        Why read RWT or Reddit when you can get journalists to do it for you?Eric Bron2015/01/07 07:45 AM
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                                                          Intentionally picking a competitors slow part is cheating ...coppice2015/01/08 11:38 PM
                                                            Intentionally picking a competitors slow part is cheating ...Mark Roulo2015/01/09 09:13 AM
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                                                              Intentionally picking a competitors slow part is cheating ...David Hess2015/01/11 01:03 PM
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                                                                      Intentionally picking a competitors slow part is cheating ...Michael S2015/01/13 10:01 AM
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                                                                      Core sizesjuanrga2015/01/13 12:28 PM
                                                          NVIDIA'S FIRST CPU IS A WINNER (Linley Gwennap)juanrga2015/01/10 04:34 PM
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                                                              Why read RWT or Reddit when you can get journalists to do it for you?Patrick Chase2015/01/09 03:20 PM
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                                                            Why read RWT or Reddit when you can get journalists to do it for you?Gabriele Svelto2015/01/11 12:53 AM
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                                                Why read RWT or Reddit when you can get journalists to do it for you?Rob Thorpe2015/01/03 08:25 PM
                                          Avoiding ping pongMaynard Handley2014/12/09 11:33 AM
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                                              Avoiding ping pongMaynard Handley2014/12/09 06:56 PM
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                            Object reference lockingPatrick Chase2014/12/09 04:52 PM
                              Object reference lockingDavid W2014/12/11 05:18 AM
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                      ISA != interface for "most programmers"rwessel2014/12/04 07:50 PM
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                  Avoiding ping pongMichael S2014/12/06 03:48 PM
          ARMv8 getting atomic operationsLinus Torvalds2014/12/04 12:05 PM
            LL/SC idiom recognition is not admitting RMW superiorityPaul A. Clayton2014/12/04 02:34 PM
            ARMv8 getting atomic operationsanon2014/12/04 10:17 PM
    ARMv8 getting atomic operationsPatrick Chase2014/12/03 12:09 PM
  limited ordernksingh2014/12/04 10:17 PM
    I didn't understand this either. (NT)Konrad Schwarz2014/12/04 10:32 PM
    limited orderdmcq2014/12/05 02:13 AM
    limited orderbakaneko2014/12/05 09:11 AM
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