Messages in this thread | | | Date | Wed, 7 Jan 2015 00:20:25 +0100 | From | Pavel Machek <> | Subject | Re: DRAM unreliable under specific access patern |
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On Mon 2015-01-05 19:23:29, One Thousand Gnomes wrote: > > In the meantime, I created test that actually uses physical memory, > > 8MB apart, as described in some footnote. It is attached. It should > > work, but it needs boot with specific config options and specific > > kernel parameters. > > Why not just use hugepages. You know the alignment guarantees for 1GB > pages and that means you don't even need to be root > > In fact - should we be disabling 1GB huge page support by default at this > point, at least on non ECC boxes ?
Actually, I could not get my test code to run; and as code from
https://github.com/mseaborn/rowhammer-test
reproduces issue for me, I stopped trying. I could not get it to damage memory of other process than itself (but that should be possible), I guess that's next thing to try.
Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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