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A comment on The mysterious case of the Linux Page Table Isolation patches. Parent comment

Re:The mysterious case of the Linux Page Table Isolation pat... by userbinator on Monday January 01, 2018 @01:01PM (#16047112)
If the bounds were tightened up to the level of perfection to prevent the attack it would drop the yield a considerable amount.

The fact that DRAM older than a few years is effectively immune to RH suggests it is possible to manufacture such. Yes, it will cost more, but I think many would be willing to pay for it like they used to, for none other than the assurance of having more reliable memory.

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Re:The mysterious case of the Linux Page Table Isolation pat... by fiddlerwoaroof on Monday January 01, 2018 @01:21PM (#16047225)
Isn’t the problem related to the capacity of current memory modules? So you can have, say, a 32GB module that’s vulnerable or a 8GB module that isn’t? (Assuming the 8GB module uses lower density DRAM chips)
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Re:The mysterious case of the Linux Page Table Isolation pat... by HelloNurse on Monday January 01, 2018 @02:12PM (#16047491)
A new 8GB DIMM module has about 1/4 the silicon area of a new 32GB module and the same density (often 1/4 the number of identical chips); only an old 8GB module, made with an entirely different process, would have larger and less dense safer DRAM cells.
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Re:The mysterious case of the Linux Page Table Isolation pat... by fiddlerwoaroof on Monday January 01, 2018 @02:38PM (#16047629)
Yeah, that's why I included the qualification
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Re:The mysterious case of the Linux Page Table Isolation pat... by joshtopher on Tuesday January 02, 2018 @12:05AM (#16049991)
I only buy DRAM that's aged at least 18 months
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