Dear All,

              I was tracking zero blocks (64B 0 value) written to cache.
During experiments, i found that cache block does not hold data sometimes.
To some cache lines non-zero block is written to cache line from lower
level memory but this data is read as Zero block during access by upper
level cache.

             I could not find how this data is changed ?

Many Thanks,
Best Regards,
Avais
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