Hi Konrad,

On Sat, Jun 30, 2012 at 12:47:18AM -0400, Konrad Rzeszutek Wilk wrote:

On Thu, Jun 28, 2012 at 02:55:44PM +0200, Andrea Arcangeli wrote:

quoted

Xen has taken over the last reserved bit available for the pagetables

Some time ago when I saw this patch I asked about it (if there is way
to actually stop using this bit) and you mentioned it is not the last
bit available for pagemaps. Perhaps you should alter the comment
in this description?

As far as I can tell the comment is correct, it is the last bit
available. Simply I don't need to use it anymore. There are 3 reserved
bits, one is used by Xen, the second is used by SPECIAL the third is
used by kmemcheck.

quoted

which is set through ioremap, this documents it and makes the code

It actually is through ioremap, gntdev (to map another guest memory),
and on pfns which fall in E820 on the non-RAM and gap sections.

Well I dropped this patch, there's too much other important work to
do, this is only a documentation improvement and a cleanup and I don't
need it.

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