Visible to Intel only — GUID: suc1423236847065
Ixiasoft
Visible to Intel only — GUID: suc1423236847065
Ixiasoft
1.2.1.27. 775419: PMU Event 0x0A Might Count Twice the LDM PC ^ Instruction with Base Address Register Write-Back
Description
The LDM PC ^ instructions with base address register write-back might be counted twice in the PMU event 0x0A, which is counting the number of exception returns. The associated PMUEVENT[11] signal is also affected by this erratum and might be asserted twice by a single LDM PC ^ with base address register write-back.
Impact
Because of this erratum, the count of exception returns is imprecise. The error rate depends on the ratio between exception returns of the form LDM PC ^ with base address register write-back and the total number of exceptions returns
Workaround
There is no workaround to this erratum.
Category
Category 3