Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [RFC] ARM DMA mapping TODO, v1 | Date | Thu, 28 Apr 2011 14:12:40 +0200 |
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On Thursday 28 April 2011, Catalin Marinas wrote: > On Thu, 2011-04-28 at 01:15 +0100, Valdis.Kletnieks@vt.edu wrote: > > On Wed, 27 Apr 2011 12:08:28 BST, Catalin Marinas said: > > > > > The current version of the ARM ARM says "unpredictable". But this > > > general definition of "unpredictable" does not allow it to deadlock > > > (hardware) or have security implications. It is however allowed to > > > corrupt data. > > > > Not allowed to have security implications, but is allowed to corrupt data. > > By security I was referring to TrustZone extensions. IOW, unpredictable > in normal (non-secure) world should not cause data corruption in the > secure world.
That definition is rather useless for operating systems that don't use Trustzone then, right?
Arnd
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