Re: [XenAccess-devel] Towards HVM support

[Steve B. <st...@at...>]

> Interesting.  So it looks to me like these values are wrong.
> Specifically, the value for swapper_pg_dir should match what you see
> in the System.map file.  It looks like the value is getting truncated
> somewhere (perhaps just formatted wrong in printf?).  Also,
> XA_PAGE_OFFSET is defined in xenaccess.h and should not be zero
> (again, perhaps a printf formatting issue?).    

Silly me, it was a printf formatting mistake as you suspected 
(%hx instead of %x had cut off the first 4 hex digits).  
So now the output is:

# ./run ./module_list 16
dom!=NULL
kernel_name=hvm
sysmap=/boot/System.map-2.6.17
swapper_pg_dir=c044e000
XA_PAGE_OFFSET=c00000000
memory=NULL
failed to init XenAccess library: Bad address
 
> If the values are correct, then I'm a little confused as I would have
> expected it to work from there.  But I'll research how xen handles 
> memory in a HVM domain while you look into the variable values.
> Hopefully one of us will find something :-)

My above output is using a Knoppix DVD as a guest domain.  I also tried
A vanilla Fedora Core 5 install as a guest and got the same results (the
only difference is a different System.map name and a different address for
Swapper_pg_dir).  So possibly there must be a fundamental difference in 
how HVM domain memory is treated, which I take it is what you're looking 
into now. :)

 - Steve