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Specifications

ManualsBrandsIntel Manualscomputer componentsCore 2 Duo E7300
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Errata
Intel
®
Core
™
2 Duo Processor
Specification Update 41
the PECI hold-off indication by keeping the PECI bus high when the PECI host
sends the first bit of the address timing negotiation phase. If the PECI host
does not choose to complete the transaction, it should consider the
transaction a failure and retry 1ms after the processor deactivates the hold-
off indication.
Status: For the steppings affected, see the Summary Tables of Changes.
AW62. VM Entry May Use Wrong Address to Access Virtual-APIC Page
Problem: When XFEATURE_ENABLED_MASK register (XCR0) bit 1 (SSE) is 1, a VM
entry executed with the “use TPR shadow” VM-execution control set to 1 may
use the wrong address to access data on the virtual-APIC page.
Implication: An affected VM entry may exhibit the following behaviors: (1) it may use
wrong areas of the virtual-APIC page to determine whether VM entry fails or
whether it induces a VM exit due to the TPR threshold; or (2) it may clear
wrong areas of the virtual-APIC page.
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.
AW63. XRSTORE Instruction May Cause Extra Memory Reads
Problem: An XRSTOR instruction will cause non-speculative accesses to XSAVE memory
area locations containing the FCW/FSW and FOP/FTW Floating Point (FP)
registers even though the 64-bit restore mask specified in the EDX:EAX
register pair does not indicate to restore the x87 FPU state.
Implication: Page faults, data breakpoint triggers, etc. may occur due to the unexpected
non-speculative accesses to these memory locations.
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.
AW64. CPUID Instruction May Return Incorrect Brand String
Problem: When a CPUID instruction is executed with EAX = 8000_0002H,
8000_0003H, or 8000_0004H, the returned EAX, EBX, ECX, and/or EDX
values may be incorrect.
Implication: When this erratum occurs, the processor may report an incorrect brand
string.
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.