EPT Accessed bit

Umesh Deshpande <[email protected]> Tue, 12 Aug 2014 10:36:59 -0500
Newsgroups gmane.linux.redhat.devel
Message-ID <CAAgWMLvX6uO7q2c18E+hfdKf9ca3OmmvnPvjLpXW5oqvskrYGw@mail.gmail.com>
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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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<div dir=3D"ltr"><div><div>Hi,<br><br></div>From the Intel processor manual=
 I read that accessed bit has been introduced=20
in EPT. The Redhat 6 release notes mentions that &quot;Extended Page Table=
=20
age bits enables a host to make smarter choices for swapping memory=20
under memory pressure&quot;.=C2=A0
I couldn&#39;t find any related patches on the LKML that use this accessed=
=20
bit to swap out the inactive VM pages. I was wondering if this feature=20
is available in rhel or any other non-enterprise versions.<br><br></div>Tha=
nks,<br>
Umesh</div>

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