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Project Zero: Exploiting the DRAM rowhammer bug to gain kernel privileges

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Re: Project Zero: Exploiting the DRAM rowhammer bug to gain kernel privileges

#101

Post by Performer »

yuhong wrote: post #64
MichaelGG wrote: post #55

Earlier quoted context omitted.

There are 16GB SODIMMs, so why isn't Intel supporting those? The company that makes them claims this is purely on Intel/OEMs. 1: http://www.intelligentmemory.com/dram-modules/ddr3-so-dimm/ Update: Oh wow, the new Broadwell chips do support them. So maybe the new ThinkPad X250 isn't so useless after all! This is great news if true.

Intelligent Memory's are probably too expensive for the normal laptop market. Micron claims to be sampling them now: http://www.micron.com/products/dram-modules/sodimm/DDR3%20SD...

Be careful... the 5th gen Intel CPUs can NOT run with standard 16GB modules. There is a technical issue which causes instabilities with 16GB modules, except if the modules are specially made to cover this issue. The Intelligent Memory modules do that.

Re: Project Zero: Exploiting the DRAM rowhammer bug to gain kernel privileges

#102

Post by baq »

zf00002 wrote: post #60
mindslight wrote: post #52

Earlier quoted context omitted.

i3 are dual cores that support ECC, aimed at NAS and the like (hence mini ITX boards with ECC SODIMMs). But you still need an explicit workstation chipset/mobo to support it. i5 and i7 have no ECC because there are equivalent Xeons. At this level "Xeon" is just branding implying features like ECC, and it doesn't automatically mean expensive - a single socket non-E (LGA1150) Xeon build costs only a little more (~20%)…

Heck, if you are buying a non-K series i7, the equivalent Xeon E3 will probably be cheaper by a few dollars.

it's also very possible it's not as fast. consult benchmarks first, as usual.

Re: Project Zero: Exploiting the DRAM rowhammer bug to gain kernel privileges

#103

Post by yuhong »

Performer wrote: post #101
yuhong wrote: post #64

Earlier quoted context omitted.

Intelligent Memory's are probably too expensive for the normal laptop market. Micron claims to be sampling them now: http://www.micron.com/products/dram-modules/sodimm/DDR3%20SD...

Be careful... the 5th gen Intel CPUs can NOT run with standard 16GB modules. There is a technical issue which causes instabilities with 16GB modules, except if the modules are specially made to cover this issue. The Intelligent Memory modules do that.

I wonder if this issue is actually in hardware or just in the MRC.
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