[lkml]   [2012]   [Mar]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRE: [PATCH 1/3] mce: Add a msg string to the MCE tracepoint
    > > My concern is; on Sandy Bridge, is it safe to gather info about the DIMM
    > > location in/from machine check context in a reasonable time span?
    > Well, what amd64_edac does is "buffer" the required lookup info so
    > whenever you get an error, you simply lookup the channel and chip select
    > - all ops which can be done in atomic context.

    Yes - we could pre-read all the config space registers ahead of time and
    save them in memory (none of the values should change - except if the platform
    supports hot-plug for memory). Total is only a few Kbytes. Then decode in
    machine check context is both safe, and fast.


     \ /
      Last update: 2012-03-01 19:31    [W:0.023 / U:1.384 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site