[libvirt] Memory access API

Wed Jun 19 02:29:48 UTC 2013

Hi,

Is there any zero-copy VM memory access API in libvirt? I see only
virDomainMemoryPeek function, which copy some memory from VM and do not permit
VM memory modifications.
What I'm looking for is xen xc_map_foreign_pages or
xc_gnttab_map_domain_grant_refs equivalent/wrapper. IOW map memory pages to
dom0 address space, without copy. I know that not every hypervisor supports
it, but it is useful to build a high-performance communication channel on top
of it.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab

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