Messages in this thread | | | Date | Tue, 6 Jan 2015 03:47:18 +0200 | From | "Kirill A. Shutemov" <> | Subject | Re: DRAM unreliable under specific access patern |
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On Mon, Jan 05, 2015 at 11:50:04AM -0800, Andy Lutomirski wrote: > On Mon, Jan 5, 2015 at 11:23 AM, One Thousand Gnomes > <gnomes@lxorguk.ukuu.org.uk> 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 ? > > Can you actually damage anyone else's data using a 1 GB hugepage?
hugetlbfs is a filesystem: the answer is yes. Although I don't see the issue as a big attach vector.
-- Kirill A. Shutemov
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