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PCIe direct access mapping: 64 bit issue #130

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dietrichb opened this issue Feb 16, 2019 · 3 comments
Closed

PCIe direct access mapping: 64 bit issue #130

dietrichb opened this issue Feb 16, 2019 · 3 comments
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@miree
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@dietrichb
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there might be an issue with 64 bit architecture

users report that values of 'coarse' and 'fine' counters might not be consistent with 64bit. However it is claimed that values are consistent with 32 bit.

remark: users have modified the PCIe kernel driver

please leave this issue open until confirmed 'fixed' by the user
@dietrichb
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a bug has been fixed, leave this issue open until colleagues from EE confirm this is fixed

@dietrichb
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the issue is still there when reading out timestamps from the old TLU

no issue with 32 bit OS, but issue with 64 bit OS

@dietrichb
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it turned this issue was caused by usage of inappropriate use of eb_data_type within the users software / driver

presumably, this is a non-issue -> closed

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