[Xen-devel] [Q] mfn_to_gmfn macro, log-dirty bitmap,

[Min Lee <min.lee@xxxxxxxxxx>]

Hi, folks.
I'm running 32bit PV-domu on 64bit xen&dom0 and I'm using 
XEN_DOMCTL_SHADOW_OP_PEEK to get log-dirty bitmap.
First, I'm assuming this bitmap is indexed by gmfn, right? because we're 
passing p2m->size parameter to xen.
Second, I have mfn (not gmfn) which I want to translate to gmfn so that I 
can correctly read corresponding bit in log-dirty bitmap. so I've tried 
mfn_to_gmfn() macro below but it doesn't seem to work. (always mfn==gmfn) 
Maybe because m2p table is not enabled?
How can I properly do mfn_to_gmfn?

#define mfn_to_gmfn(_d, mfn)                            \
    ( (paging_mode_translate(_d))                       \
      ? get_gpfn_from_mfn(mfn)                          \
      : (mfn) )


Thanks for any help.
Min

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