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Subject: Re: [Qemu-devel] [RFC PATCH 01/13] Generic DMA memory access
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To: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Cc: aliguori@us.ibm.com, kvm@vger.kernel.org, mst@redhat.com, aik@ozlabs.ru, joro@8bytes.org, seabios@seabios.org, qemu-devel@nongnu.org, agraf@suse.de, blauwirbel@gmail.com, yamahata@valinux.co.jp, paul@codesourcery.com, kevin@koconnor.net, avi@redhat.com, dwg@au1.ibm.com, david@gibson.dropbear.id.au

On 06/01/2011 08:35 AM, Eduard - Gabriel Munteanu wrote:
> Maybe it's not nice, but you're missing the fact upcasting gives you
> some type safety. With opaques you have none.

Lol.  Do you understand what container_of does?
This is not dynamic_cast<> with RTTI.

You can put any type name in there that you like,
so long as it has a field name to match.  The type
of the field you give doesn't even have to match
the type of the pointer that you pass in.

Type safety this is not.


r~