Proposal to change page allocation to zero on free in the -virtual kernel
Peter Lieven
lieven-lists at dlhnet.de
Mon Jan 28 08:45:46 UTC 2013
Hi,
I would like to know if it would be a good idea to change the page allocator zeroing
policy from zero on allocate (for GFP_USER) to zero on free for the -virtual kernel builds.
This has been initally proposed in grsecurity for security reasons, but it is extremely
beneficial in virtual environments for 2 additional reasons:
a) live migration
b) ksm
What is your opinion on this?
Thanks,
Peter
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