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[XenPPC] Re: Linux PG_arch_1 conflict

Magenheimer, Dan (HP Labs Fort Collins) wrote:
See previous discussion at:


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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