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Old 03-21-2009, 08:18 PM
Paul Collins
Default Bug#520677: linux-2.6: VMI does not correctly release PGD pages

Package: linux-2.6
Version: 2.6.26-13

A bug in Linux's VMI implementation that can cause hangs and reboots was
fixed by commit 55a8ba4b7f76bebd7e8ce3f74c04b140627a1bad (which in turn
requires commit eba0045ff87bab465d3c80c289f3bf709c1800f5) and has been
incorporated into the 2.6.28 stable series. Please consider including
it in Debian's 2.6.26.

I have had a couple of Debian guests running 2.6.26-13 plus these two
patches on one of our ESX clusters for a few days and the symptom I was
observing (massively excessive hypervisor memory usage as reported in
the Memory Overhead field) is no longer present.

Note that commit eba0045ff87bab465d3c80c289f3bf709c1800f5 will cause an
ABI bump as it alters pv_mmu_ops.

Paul Collins
Wellington, New Zealand

Dag vijandelijk luchtschip de huismeester is dood

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