Re: [PATCH 2 of 2] __raw_memcpy_toio32 for x86_64

From: Andi Kleen
Date: Wed Jan 11 2006 - 20:39:34 EST


On Thursday 12 January 2006 02:32, Roland Dreier wrote:
> Andi> Well then they can just as well use normal memcpy as long as
> Andi> they don't pass any sizes % 4 != 0. That should be ok as
> Andi> long as they add a comment there.
>
> But then the driver will be doing memcpy() to I/O memory, which may
> work by chance on x86_64 but will blow up on other archs.

I meant aliasing it to memcpy on x86-64

But with the nasty qword splitup assumptions it would be wrong anyways,
so scratch that.

-Andi
-
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/