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Signed-off-by: Andrew Warfield <andrew.warfield@cl.cam.ac.uk>
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interface defintions for future extensibility. In particular,
grant references are now 32 bits and this has some knock-on
effects on split-driver interfaces.
Signed-off-by: Keir Fraser <keir@xensource.com>
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Mostly this makes the tap code work again with all of the changes that
have happened to the block drivers recently. We now use a shared page
per VBD (to the driver), and handle control information through the
store. The taplib interfaces have changed to be based around per-vbd
data structures that you can attach arbitrary handlers for.
There is also initial code for a user-level blockback driver, which
aims to get around the use of loopbacks for file-based vbds. Still
plenty of work to do here -- this is a working incremental checkin and
I'm away from this for the next four weeks.
Signed-off-by: Andrew Warfield <andrew.warfield@cl.cam.ac.uk>
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Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
--HG--
rename : tools/libxc/xc.h => tools/libxc/xenctrl.h
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Clean up blktaplib headers.
Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>
Signed-off-by: andrew.warfield@cl.cam.ac.uk
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Fix tools build. Clean up barrier defs.
Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
Signed-off-by: Keir Fraser <keir.fraser@cl.cam.ac.uk>
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Rationalise memory-barrier definitions in user-space tools.
Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
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Initial checkin of blktap user-land tools. These are fairly experimental,
but a few people have asked to use them. This checkin also includes
Christian's gnbd client library code.
Signed-off-by: andrew.warfield@cl.cam.ac.uk
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