Specification Update
39
BJ59.
XSAVE Executed During Paging-Structure Modification May Cause
Unexpected Processor Behavior
Problem:
Execution of XSAVE may result in unexpected behavior if the XSAVE instruction writes
to a page while another logical processor clears the dirty flag or the accessed flag in
any paging-structure entry that maps that page.
Implication:
This erratum may cause unpredictable system behavior. Intel has not observed this
erratum with any commercially available software.
Workaround:
It is possible for the BIOS to contain a workaround for this erratum.
Status:
For the steppings affected, see the Summary Tables of Changes.
BJ60.
C-state Exit Latencies May be Higher Than Expected
Problem:
Core C-state exit can be delayed if a P-state transition is requested before the pending
C-state exit request is completed. Under certain internal conditions the core C-state
exit latencies may be over twice the value specified in the Intel
®
64 and IA-32
Architectures Optimization Reference Manual.
Implication:
While typical exit latencies are not impacted, the worst case core C-state exit latency
may be over twice the value specified in the Intel
®
64 and IA-32 Architectures
Optimization Reference Manual and may lead to a delay in servicing interrupts. Intel
has not observed any system failures due to this erratum.
Workaround:
It is possible for the BIOS to contain a workaround for this erratum.
Status:
For the steppings affected, see the Summary Tables of Changes.
BJ61.
MSR_Temperature_Target May Have an Incorrect Value in the
Temperature Control Offset Field
Problem:
Under certain conditions the value in MSR_Temperature_Target (1A2H) bits [15:8]
(Temperature Control Offset) may indicate a temperature up to 25 degrees higher than
intended.
Implication:
Due to this erratum, fan speed control algorithms that rely on this value may not
function as expected
Workaround:
It is possible for the BIOS to contain a workaround for this erratum.
Status:
For the steppings affected, see the Summary Tables of Changes.
Summary of Contents for BX80623G530
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