linux-kernel - Re: [PATCH] virtio_pci: fix macro exported in uapi

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Message-ID: <32418.1368781063@warthog.procyon.org.uk>
Date:	Fri, 17 May 2013 09:57:43 +0100
From:	David Howells <dhowells@...hat.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	dhowells@...hat.com, "Michael S. Tsirkin" <mst@...hat.com>,
	kvm@...r.kernel.org, Stephen Hemminger <shemminger@...tta.com>,
	Jason Wang <jasowang@...hat.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Dave Jones <davej@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] virtio_pci: fix macro exported in uapi

Rusty Russell <rusty@...tcorp.com.au> wrote:

> Macro still isn't usable, because userspace can't know whether it's the
> new or old.
> 
> We need to either remove it from UAPI, or rename it to
> VIRTIO_PCI_CONFIG_OFF.

Surely, if userspace is using it as is, you can't remove it, rename it or
alter it?

David
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