[Bug 254693] random crashes with armv7 thumb application on arm64

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254693

Robert Clausecker <fuz at fuz.su> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |Not A Bug
             Status|New                         |Closed

--- Comment #2 from Robert Clausecker <fuz at fuz.su> ---
My bad.  It appears that the synchronisation code is indeed incorrect.  Citing
from the ARMv8 ARM, section E2.5.3:

> If software requires coherency between instruction execution and
> memory, it must manage this coherency using Context synchronization
> events and cache maintenance instructions. These can only be
> accessed from an Exception level that is higher than EL0, and
> therefore require a system call [...].

Closing this one as invalid.

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