EPT Accessed bit

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Hi,

From the Intel processor manual I read that accessed bit has been introduced in EPT. The Redhat 6 release notes mentions that "Extended Page Table age bits enables a host to make smarter choices for swapping memory under memory pressure".  I couldn't find any related patches on the LKML that use this accessed bit to swap out the inactive VM pages. I was wondering if this feature is available in rhel or any other non-enterprise versions.

Thanks,
Umesh
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