Re: [PATCH] ARM: Do not allow unaligned accesses when CONFIG_ALIGNMENT_TRAP

[Andi Kleen]

> Catalin said in his mail "I haven't tried with -mno-unaligned-access, I
> suspect the variables on the stack would be aligned.".  So I don't think
> we know enough to say whether -mno-unaligned-access avoids the stack
> packing.

It won't, the arm gcc code just checks flag_conserve_stack.
IMHO it's just a gcc bug. You should report it to 
http://gcc.gnu.org/bugzilla

As a temporary workaround you can disable it in the kernel too, but as soon
as the compiler it's fixed I would recommend considering to reenable it.

-Andi

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