[XenPPC] Re: Linux PG_arch_1 conflict

[Hollis Blanchard <hollisb@xxxxxxxxxx>]

Magenheimer, Dan (HP Labs Fort Collins) wrote:
> See previous discussion at:
>
> http://lists.xensource.com/archives/html/xen-devel/2005-12/msg00238.html
>
>
> The issue is that PG_arch_1 is reserved for arch-specific
> usage, the paravirtualization changes for Xenlinux utilize
> it (to mark foreign pages) because it was otherwise unused
> in Linux/x86.  But Xen is no longer an arch.
>
> Grep'ing for "PageForeign" in -sparse will show most (all?)
> of the actual uses of it.  Nearly all are in x86-specific
> code.  But one is in netback_init().
That thread seems to already have a solution. Has anybody run it past 
Linux MM people? (Adding xen-devel to CC for greater exposure.)
--
Hollis Blanchard
IBM Linux Technology Center

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