On 11/26/2014 01:41 AM, Bryan D. Payne wrote: > This patch adds a new QMP command that sets up a domain socket. This > socket can then be used for fast read/write access to the guest's > physical memory. The key benefit to this system over existing solutions > is speed. Using this patch, guest memory can be copied out at a rate of > ~200MB/sec, depending on the hardware. Existing solutions only achieve > a small fraction of this speed. > > Signed-off-by: Bryan D. Payne <bdpa...@acm.org> > --- > Makefile.target | 2 +- > memory-access.c | 200 > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > memory-access.h | 11 ++++ > monitor.c | 10 +++ > qmp-commands.hx | 27 ++++++++
Where is the *.json file that adds the QMP command contract?
> +++ b/qmp-commands.hx
> @@ -609,6 +609,33 @@ Example:
> EQMP
>
> {
> + .name = "pmemaccess",
> + .args_type = "path:s",
> + .params = "path",
> + .help = "mount guest physical memory image at 'path'",
> + .user_print = monitor_user_noop,
> + .mhandler.cmd_new = do_physical_memory_access,
> + },
> +
> +SQMP
> +pmemaccess
> +----------
> +
> +Mount guest physical memory image at 'path'.
> +
> +Arguments:
> +
> +- "path": mount point path (json-string)
> +
> +Example:
> +
> +-> { "execute": "pmemaccess",
> + "arguments": { "path": "/tmp/guestname" } }
Sounds like you are missing this entry (probably best to put it in the
top-level qapi-schema.json):
{ 'command': 'pmemaccess', 'data': { 'path': 'str' } }
as well as documentation that mentions it is targetted for addition in 2.3.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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