From: Georgi Guninski <guninski@guninski.com>
   On Wed, Sep 16, 2015 at 11:46:26PM -0400, grarpamp wrote:
   >[1]http://users.ece.cmu.edu/~omutlu/pub/dram-row-hammer_kim_talk_isca1
   4.pdf
   >p. 32 of the PDF:
   >.– Simple ECC (e.g., SECDED) cannot prevent all errors
   >From wikipedia:  Tests show that simple ECC solutions, providing
   >single-error correction and double-error detection (SECDED)
   >capabilities, are not able to correct or detect all observed
   >disturbance errors because some of them include more than two flipped
   >bits per memory word.[1]:8[11]:32
   >[2]https://en.wikipedia.org/wiki/Row_hammer#cite_ref-isca14-talk_11-0
   But all single-bit and triple-bit errors are detectable by parity, and
   so are all double-bit errors using ECC.
   [3]https://en.wikipedia.org/wiki/Dynamic_random-access_memory#Errors%5F
   and%5Ferror%5Fcorrection
   Jim Bell

References

   1. http://users.ece.cmu.edu/~omutlu/pub/dram-row-hammer_kim_talk_isca14.pdf
   2. https://en.wikipedia.org/wiki/Row_hammer#cite_ref-isca14-talk_11-0
   3. https://en.wikipedia.org/wiki/Dynamic_random-access_memory#Errors_and_error_correction