AMD Phenom 8650 Triple-Core HD8650WCGHBOX 사용자 설명서
제품 코드
HD8650WCGHBOX
24
Product Errata
41322
Rev. 3.16 February 2008
Revision Guide for AMD Family 10h Processors
248 INVLPGA of A Guest Page May Not Invalidate Splintered Pages
Description
When an address mapped by a guest uses a larger page size than the host, the TLB entry created uses
the size of the smaller page; this is referred to as page splintering. TLB entries that are the result of
page splintering may not be invalidated when the large page is invalidated in the guest using
INVLPGA.
the size of the smaller page; this is referred to as page splintering. TLB entries that are the result of
page splintering may not be invalidated when the large page is invalidated in the guest using
INVLPGA.
Potential Effect on System
Unpredictable system behavior may result due to inconsistent entries in the TLB.
Suggested Workaround
The hypervisor should always intercept INVLPGA instructions. On returning to the guest from the
INVLPGA intercept the hypervisor should set TLB_Control = 1 in the VMCB to ensure correctness.
INVLPGA intercept the hypervisor should set TLB_Control = 1 in the VMCB to ensure correctness.
Fix Planned
Yes