Re: [PATCH] Introduce compat_u64 and compat_s64 types

From: David Howells
Date: Fri Jun 15 2007 - 08:10:56 EST

Andi Kleen <ak@xxxxxxx> wrote:

> Why does it break them? It should just make them a little slower.

Not all CPUs deliver recoverable misalignment exceptions. This is probably
particularly true of NOMMU-mode archs where the CPU designed may have taken
the view that if a data exception is delivered, then the whole system is kaput
anyway and must be restarted.

> The network code requires unaligned accesses to work anyways so if your
> architecture doesn't support them it is already remotely crashable.

I thought we'd fixed all that.

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