Re: [PATCH 0/4] Add support of guest user space symbols for perfkvm command.

From: David Ahern
Date: Thu Dec 19 2013 - 11:29:03 EST


On 12/19/13, 8:34 AM, Ingo Molnar wrote:

Btw., having to specify a '--guestmount /tmp/guestmount/' just to
achieve a natural feature (proper guest symbol resolution) is a poor
user interface, obviously.

Is there perhaps a predictable pattern as to where qemu (or libvirt)
puts a user's guest mounts, or some other discovery method?

No, qemu does not export guest info to the host. A user has to create it -- either using something like sshfs or copying the files. I tend to use the latter as it is simpler.

David


If yes then it would be possible to automatically look for that
pattern, and use the guest filesystem when it's available, without the
user having to manually configure the path.

( Ideally we'd have kernel help for discovering this, but last time I
raised that with the KVM folks there was resistence. )


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