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

[Zhongze Liu <blackskygg@xxxxxxxxx>]

2017-06-16 11:50 GMT+08:00 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
>

And both of them are hvms and have a memory of 32M.

>
> 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?
>

and the minimum gfn for the call to succeed is 256.


Cheers,

Zhongze Liu

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel