PLB reference

By: Carson (carson.delete@this.example.edu), September 20, 2021 10:19 pm
Room: Moderated Discussions
Michael S (already5chosen.delete@this.yahoo.com) on September 18, 2021 4:14 pm wrote:
> With permission coarser-grained than translation how are you going to emulate a Present bit in PTE?
> Or do you propose to totally give up on demand paging?

You can have additional checks on cache miss. Permission to access a cache line does not guarantee success. (You could still have an ECC failure, for example.)

Even a conventional TLB design has to deal with post-TLB failures. For example, a cache miss could race with a TLB shootdown. Or an access could have to be aborted after an earlier access faults.

The purpose of the PLB is to regulate access to virtually-cached data. If an access misses in the virtual cache layers, the miss handler may do whatever it likes. Including, presumably, address translation, but it may fail the access for any reason it likes.
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TopicPosted ByDate
POWER10 SAP SD benchmarkanon22021/09/06 03:36 PM
  POWER10 SAP SD benchmarkDaniel B2021/09/07 02:31 AM
    "Cores" (and SPEC)Rayla2021/09/07 07:51 AM
      "Cores" (and SPEC)anon2021/09/07 03:56 PM
  POWER10 SAP SD benchmarkAnon2021/09/07 03:24 PM
    POWER10 SAP SD benchmarkAnon2021/09/07 03:27 PM
  Virtually tagged L1-cachessr2021/09/08 05:49 AM
    Virtually tagged L1-cachesdmcq2021/09/08 08:22 AM
      Virtually tagged L1-cachessr2021/09/08 08:56 AM
      Virtually tagged L1-cachesHugo Décharnes2021/09/08 08:58 AM
        Virtually tagged L1-cachessr2021/09/08 10:09 AM
          Virtually tagged L1-cachesHugo Décharnes2021/09/08 10:46 AM
            Virtually tagged L1-cachessr2021/09/08 11:35 AM
              Virtually tagged L1-cachesHugo Décharnes2021/09/08 12:23 PM
                Virtually tagged L1-cachessr2021/09/08 12:40 PM
                  Virtually tagged L1-cachesanon2021/09/09 03:16 AM
                    Virtually tagged L1-cachesKonrad Schwarz2021/09/10 05:19 AM
                      Virtually tagged L1-cachesHugo Décharnes2021/09/10 06:59 AM
                        Virtually tagged L1-cachesanon2021/09/14 03:17 AM
                          Virtually tagged L1-cachesdmcq2021/09/14 09:34 AM
                            Or use a PLB (NT)Paul A. Clayton2021/09/14 09:45 AM
                              Or use a PLBLinus Torvalds2021/09/14 03:27 PM
                                Or use a PLBanon2021/09/15 12:15 AM
                                  Or use a PLBMichael S2021/09/15 03:21 AM
                                    Or use a PLBdmcq2021/09/15 03:42 PM
                                      Or use a PLBKonrad Schwarz2021/09/16 04:24 AM
                                        Or use a PLBMichael S2021/09/16 10:13 AM
                                          Or use a PLB---2021/09/16 01:02 PM
                                  PLB referencePaul A. Clayton2021/09/18 02:35 PM
                                    PLB referenceMichael S2021/09/18 04:14 PM
                                      Demand paging/translation orthogonalPaul A. Clayton2021/09/19 07:33 AM
                                        Demand paging/translation orthogonalMichael S2021/09/19 09:10 AM
                                      PLB referenceCarson2021/09/20 10:19 PM
                                    PLB referencesr2021/09/20 06:02 AM
                                      PLB referenceMichael S2021/09/20 07:03 AM
                                        PLB referenceLinus Torvalds2021/09/20 12:10 PM
                                  Or use a PLBsr2021/09/20 04:32 AM
                              Or use a PLBsr2021/09/21 09:36 AM
                                Or use a PLBLinus Torvalds2021/09/21 10:04 AM
                                  Or use a PLBsr2021/09/21 10:48 AM
                                    Or use a PLBLinus Torvalds2021/09/21 01:55 PM
                                      Or use a PLBsr2021/09/22 06:55 AM
                                        Or use a PLBrwessel2021/09/22 07:09 AM
                                        Or use a PLBLinus Torvalds2021/09/22 11:50 AM
                                          Or use a PLBsr2021/09/22 01:00 PM
                                            Or use a PLBdmcq2021/09/22 04:07 PM
                                            Or use a PLBEtienne Lorrain2021/09/23 08:50 AM
                                          Or use a PLBanon22021/09/22 04:09 PM
                                            Or use a PLBdmcq2021/09/23 02:35 AM
                                          Or use a PLB2021/09/23 09:37 AM
                                            Or use a PLBLinus Torvalds2021/09/23 12:01 PM
                                              Or use a PLBgpd2021/09/24 03:59 AM
                                                Or use a PLBLinus Torvalds2021/09/24 10:45 AM
                                                  Or use a PLBdmcq2021/09/24 12:43 PM
                                                  Or use a PLBsr2021/09/25 10:19 AM
                                                    Or use a PLBLinus Torvalds2021/09/25 10:44 AM
                                                      Or use a PLBsr2021/09/25 11:11 AM
                                                        Or use a PLBLinus Torvalds2021/09/25 11:31 AM
                                                          Or use a PLBsr2021/09/25 11:52 AM
                                                            Or use a PLBLinus Torvalds2021/09/25 12:05 PM
                                                              Or use a PLBsr2021/09/25 12:23 PM
                                                                Or use a PLBrwessel2021/09/25 03:29 PM
                                                                  Or use a PLBsr2021/10/01 12:22 AM
                                                                    Or use a PLBrwessel2021/10/01 06:19 AM
                                                                      Or use a PLBDavid Hess2021/10/01 10:35 AM
                                                                        Or use a PLBrwessel2021/10/02 04:47 AM
                                                                      Or use a PLBsr2021/10/02 11:16 AM
                                                                        Or use a PLBrwessel2021/10/02 11:53 AM
                                                          Or use a PLBLinus Torvalds2021/09/25 11:57 AM
                                                            Or use a PLBsr2021/09/25 12:07 PM
                                                              Or use a PLBLinus Torvalds2021/09/25 12:21 PM
                                                                Or use a PLBsr2021/09/25 12:40 PM
                                                                  Or use a PLBnksingh2021/09/27 09:07 AM
                                                          Or use a PLB2021/09/27 09:02 AM
                                                            Or use a PLBLinus Torvalds2021/09/27 10:20 AM
                                                              Or use a PLBLinus Torvalds2021/09/27 12:58 PM
                                                                Or use a PLBdmcq2021/09/28 10:59 AM
                                              Or use a PLBsr2021/09/25 10:34 AM
                                                Or use a PLBrwessel2021/09/25 03:44 PM
                                                  Or use a PLBsr2021/10/01 01:04 AM
                                                    Or use a PLBrwessel2021/10/01 06:33 AM
                                                      I386 segmentation highlightssr2021/10/04 07:53 AM
                                                        I386 segmentation highlightsAdrian2021/10/04 09:53 AM
                                                          I386 segmentation highlightssr2021/10/04 10:19 AM
                                                        I386 segmentation highlightsrwessel2021/10/04 04:57 PM
                                                          I386 segmentation highlightssr2021/10/05 11:16 AM
                                                            I386 segmentation highlightsMichael S2021/10/05 12:27 PM
                                                            I386 segmentation highlightsrwessel2021/10/05 04:20 PM
                                                Or use a PLBJohnG2021/09/25 10:18 PM
                                              Or use a PLB2021/09/27 07:37 AM
                                                Or use a PLBHeikki Kultala2021/09/28 03:53 AM
                                                  Or use a PLBrwessel2021/09/28 07:29 AM
                                        Or use a PLBDavid Hess2021/09/23 06:00 PM
                                          Or use a PLBAdrian2021/09/24 01:21 AM
                                            Or use a PLBdmcq2021/09/25 12:41 PM
                                        Or use a PLBblaine2021/09/26 11:19 PM
                                          Or use a PLBDavid Hess2021/09/27 11:35 AM
                                            Or use a PLBblaine2021/09/27 05:19 PM
                                            Or use a PLBAdrian2021/09/27 10:40 PM
                                              Or use a PLBAdrian2021/09/27 10:59 PM
                                                Or use a PLBdmcq2021/09/28 07:45 AM
                                              Or use a PLBrwessel2021/09/28 07:45 AM
                                              Or use a PLBDavid Hess2021/09/28 12:50 PM
                                                Or use a PLBEtienne Lorrain2021/09/30 01:25 AM
                                                  Or use a PLBDavid Hess2021/10/01 10:40 AM
                                  MMU privilegessr2021/09/21 11:07 AM
                                    MMU privilegesLinus Torvalds2021/09/21 01:49 PM
                            Virtually tagged L1-cachesKonrad Schwarz2021/09/16 04:18 AM
                          Virtually tagged L1-cachesCarson2021/09/16 01:12 PM
                            Virtually tagged L1-cachesanon22021/09/16 05:16 PM
                              Virtually tagged L1-cachesrwessel2021/09/16 06:29 PM
                          Virtually tagged L1-cachessr2021/09/20 04:20 AM
              Virtually tagged L1-caches---2021/09/08 02:28 PM
                Virtually tagged L1-cachesanonymou52021/09/08 08:28 PM
                  Virtually tagged L1-cachesanonymou52021/09/08 08:34 PM
                  Virtually tagged L1-caches---2021/09/09 10:14 AM
                    Virtually tagged L1-cachesanonymou52021/09/09 10:44 PM
                Multi-threading?David Kanter2021/09/09 09:32 PM
                  Multi-threading?---2021/09/10 09:19 AM
                Virtually tagged L1-cachessr2021/09/11 01:19 AM
                Virtually tagged L1-cachessr2021/09/11 01:36 AM
                  Virtually tagged L1-caches---2021/09/11 09:53 AM
                    Virtually tagged L1-cachessr2021/09/12 12:43 AM
                      Virtually tagged L1-cachesLinus Torvalds2021/09/12 11:10 AM
                        Virtually tagged L1-cachessr2021/09/12 11:57 AM
                          Virtually tagged L1-cachesdmcq2021/09/13 08:31 AM
                            Virtually tagged L1-cachessr2021/09/20 04:11 AM
            Virtually tagged L1-cachessr2021/09/11 02:49 AM
      Virtually tagged L1-cachesLinus Torvalds2021/09/08 12:34 PM
        Virtually tagged L1-cachesdmcq2021/09/09 02:46 AM
          Virtually tagged L1-cachesdmcq2021/09/09 02:58 AM
          Virtually tagged L1-cachessr2021/09/11 01:29 AM
            Virtually tagged L1-cachesdmcq2021/09/11 08:59 AM
              Virtually tagged L1-cachessr2021/09/12 12:57 AM
                Virtually tagged L1-cachesdmcq2021/09/12 08:44 AM
                  Virtually tagged L1-cachessr2021/09/12 09:48 AM
                    Virtually tagged L1-cachesdmcq2021/09/12 01:22 PM
                      Virtually tagged L1-cachessr2021/09/20 04:40 AM
    Where do you see this information? (NT)anon22021/09/09 02:45 AM
      Where do you see this information?sr2021/09/11 01:40 AM
        Where do you see this information?anon22021/09/11 01:53 AM
          Where do you see this information?sr2021/09/11 02:08 AM
            Thank you (NT)anon22021/09/11 04:31 PM
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