Re: [PATCH 1/24] make atomic_read() behave consistently on alpha

[Herbert Xu]

Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> wrote:
>
> The compiler is within its rights to read a 32-bit quantity 16 bits at
> at time, even on a 32-bit machine.  I would be glad to help pummel any
> compiler writer that pulls such a dirty trick, but the C standard really
> does permit this.

Code all over the kernel assumes that 32-bit reads/writes
are atomic so while such a compiler might be legal it certainly
can't compile Linux.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/