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Re: [Xen-devel] Re: [PATCH] sysfs attributes for xen

To: Dave Hansen <haveblue@xxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH] sysfs attributes for xen
From: "Mike D. Day" <ncmike@xxxxxxxxxx>
Date: Mon, 30 Jan 2006 12:17:17 -0500
Cc: Greg KH <greg@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, lkml <linux-kernel@xxxxxxxxxxxxxxx>
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Dave Hansen wrote:
In the final version, there will be available Xen headers, and the patch
won't need the open-coded 1024?

Good question, I need some advice. The Xen hcall headers get soft-linked into 
every paravirtualized OS tree: linux, bsd, solaris, etc. In linux right now the 
xen version.h shows up as  /include/asm-xen/version.h.

This file uses typedefs for every important parameter. For example, typedef char [1024] xen_capabilities_info_t;. But as Greg says TYPEDEFS ARE EVIL. Last resort would be to use the funky gcc #include_next to override the xen hcall headers with a linux-specific hcall headers. But I don't know if that would be cool with lkml either. So, advice would be welcome :). thanks,


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