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From: Denys Fedorysychenko <nuclearcat@nuclearcat.com>
To: legerde@gmail.com, linux-kernel@vger.kernel.org
Subject: Aerospace and linux
Date: Sun, 13 Jun 2010 18:26:58 +0300	[thread overview]
Message-ID: <201006131826.58146.nuclearcat@nuclearcat.com> (raw)

>Storage will probably be something really cheap.  So I assume flash.
>But, possibly a USB stick type device.   Maybe an IDE based solid
>state storage device.

Most of commercial controllers (USB and IDE) use intermediate cache/buffer 
memory, that will be vulnerable to byte flipping (as i know even SRAM 
vulnerable to that).	Some of them have their own firmware, storing somewhere 
chip wearing information, and if bit flipping happen there - they just will 
fail (common issue: USB flash not recognized anymore or have 0 bytes 
capacity).

	I guess you need truly embedded device, including PCB design, and operate 
with storage chips directly (RAM, flash chips). Also flash (NOR and NAND) 
vulnerable to bit-flipping too, and it is prefferable to use hardened IC's (i 
doubt there is hardened USB/IDE controllers), protected bus design, strong 
error recovery algo's, system and parts redundancy and etc.

             reply	other threads:[~2010-06-13 15:27 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-13 15:26 Denys Fedorysychenko [this message]
  -- strict thread matches above, loose matches on Subject: below --
2010-06-10 17:29 Brian Gordon
2010-06-10 18:23 ` Andi Kleen
2010-06-10 18:38   ` Brian Gordon
2010-06-10 18:46     ` Chris Friesen
2010-06-10 19:14       ` Brian Gordon
2010-06-10 18:48     ` Andi Kleen
2010-06-13  8:51     ` Borislav Petkov
2010-06-10 18:27 ` Chris Friesen
2010-06-10 18:42   ` Brian Gordon
2010-06-10 19:23     ` Massimiliano Galanti
2010-06-10 19:37       ` Brian Gordon
2010-06-10 19:42         ` Brian Gordon
2010-06-10 19:52           ` Massimiliano Galanti
2010-06-10 20:12             ` Brian Gordon
2010-06-10 19:59       ` Massimiliano Galanti
2010-06-11 14:37   ` Henrique de Moraes Holschuh

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