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xen-ppc-devel

Re: [Xen-devel] /dev/mem and xlate_dev_mem_ptr*()

To: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] /dev/mem and xlate_dev_mem_ptr*()
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Sat, 27 Jan 2007 13:13:04 +0000
Cc: xen-ppc-devel <xen-ppc-devel@xxxxxxxxxxxxxxxxxxx>
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On 27/1/07 12:49 pm, "Jimi Xenidis" <jimix@xxxxxxxxxxxxxx> wrote:

> in the 2.6.18 linux of the sparse tree you have:
> drivers/xen/char/mem.c  using xlate_dev_mem_ptr as 2 args.
> 
> What is the story with this? has the interface changed from under you?
> Why not invent a new interface that does not conflict, since this is
> your code?

The functions are used only by the /dev/mem driver so really they belong to
us, if you choose to build with our alternative driver. The original
interface is unimplementable over Xen (since we do not have 1:1 mappings of
everything). If those changes get merged upstream I would expect a size
parameter would get added to the function in upstream too.

 -- Keir



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