[Xen-devel] questions on mem_sharing_op*'s and tools/tests/mem-sharing/memshrtool

[Zhongze Liu <blackskygg@xxxxxxxxx>]

Hi there,

I was experimenting with the mem_sharing_op and I found a handy tool:
tools/tests/mem-sharing/memshrtool
I set up two bare metal x86_64 VMS running some simple code in 16-bit
real mode and I tried to share the first physical page among them. so
I use:

"./memshrtool enable src_dom "
"./memshrtool enable dst_dom"
"./memshrtool nominate src_dom 0"

And it failed with an "error executing xc_memshr_nominate_gfn(xch,
domid, gfn, &handle): Argument list too long "

But when I changed the gfn from 0 to 1000, it succeeds. Is there any
restrition on the gfns to be shared?


Cheers,


Zhongze Liu

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