Re: [Xen-devel] [PATCH 0/2] PV framebuffer

[Atsushi SAKAI <sakaia@xxxxxxxxxxxxxx>]

Hello, Markus

 I want to test PV patch but current patch does not work.
(as Steven Smith suggested, for example xenfb.h xenkbd.h location is not 
correct)
Could you give me a working version patch?

Thanks
Atsushi SAKAI

>Summary of changes:
>
>* Use xenbus_device API.
>
>  Some xm configuration magic is still missing, see below.
>
>* Negotiate features through Xen Store.
>
>* Key identification
>
>  Discussed at length on this list.  I fixed sdlfb to use scan codes
>  (assumes standard AT or PS/2 keyboard).  vncfb is not fixable.  See
>  comments in the code.
>
>* Drop XENKBD_TYPE_BUTTON in favour of XENKBD_TYPE_KEY.  Simpler, and
>  gets rid of the three button limit.
>
>* Support shadow translate mode guests (untested).
>
>* Absolute mouse pointer (optional feature)
>
>* Fix event delivery and receipt notification.
>
>* Use __s32 for coordinates instead of __u16 and __s16 for pixel
>  coordinates, to match linux/input.h, which uses int.
>
>* Don't drop the first pointer event on the floor in vncfb.
>
>* Backends diagnose lost kbd events.
>
>* Some renames to make xenkbd and xenfb drivers more similar.  Sorry
>  for the extra diffs, but the inconsistencies were just too
>  confusing.
>
>Known issues:
>
>* What to do when backend closes the connection?  I guess we want to
>  keep the frontend running, ready for another connection.  This works
>  already, but in a rather hackish and limited way.
>
>* What to do when the frontend closes the connection?  Make backend
>  exit?
>
>* What happens when multiple backends connect to the same frontend?
>  Chaos, most likely.
>
>* Resume not implemented.
>
>* xm configuration magic doesn't know the new devices, yet.  I'm
>  ignorant of how this magic works, perhaps somebody can lend me a
>  hand with it.
>
>  Workaround:
>
>  - Convert /etc/xen/FOO into FOO.sxp with xm create -n.  Make sure to
>    delete the junk at the beginning of the output.
>
>  - Add
>        (device (vfb ()))
>        (device (vkbd ())
>    and change kernel and ramdisk to point to suitable copies.
>
>  - xm create -F FOO.sxp.
>
>* A couple of FIXMEs are still left in the code.
>
>Future work:
>
>* Investigate ditching LibVNCServer.
>
>* Use grant tables when they become capable of mapping the
>  framebuffer.
>
>* Support multiple framebuffers.
>
>* Dynamic screen resolution.
>
>* Support other keyboards.
>
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