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* mini-os: stop compiler complaint about unused variablesJohn McDermott2012-02-091-0/+2
| | | | | | | | | gcc (GCC) 4.6.2 20111027 (Red Hat 4.6.2-1) complains about unused variables in mini-os drivers Signed-off-by: John McDermott <john.mcdermott@nrl.navy.mil> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* mini-os: use BSD sys/queue.h instead of Linux list.hIan Campbell2012-01-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The latter is GPL which makes the whole of mini-os GPL rather than BSD as intended. In tree users are all GPL or GPL-compatible but we should fix this so that mini-os is BSD. Do so by using the same BSD sys/queue.h as we use in libxl. Tested with the builtin mini-os test app and qemu stubdomain, both of which appear to still function as expected. Move tools/libxl/external and the associated sed script to tools/include/xen-external to allow more sensible access from mini-os. Also add s/NULL/0/ in the sed script due to NULL not always being defined in stubdom code when mini-os/wait.h is included. As well as the obvious ABI changes there are a few API updates associated with the change: - struct rw_semaphore.wait_list is unused - remove_waiter needs to take the wait_queue_head The latter requires a qemu update, so there is also a QEMU_TAG update in this changeset. I sprinkled some extra-emacs local variables around the files I edited which didn't have them. I think this should be backported to the stable branches since external users of mini-os may have been mislead into thinking they could safely link mini-os against GPL-incompatible code. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* mini-os: Revert 21106:b20f897d6010 "Fix xenbus initialisation"Keir Fraser2010-05-041-3/+2
| | | | | | Jeremy Fitzhardinge (jeremy@goop.org) reports that this fixes HVM+stubdom. Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
* mini-os: Fix crash on frontend shutdown failuresKeir Fraser2010-04-071-2/+4
| | | | | | | Do not free frontend resources if some error happened, since the backend may not have finished properly restarting in such case. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
* mini-os: Fix frontend shutdown wait loopKeir Fraser2010-04-071-5/+10
| | | | | | | minios frontends must wait for backends to be shut down and reinitialized before freeing resources. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
* mini-os: Fix xenbus initialisationKeir Fraser2010-04-061-2/+3
| | | | | | | | | This fixes xenbus initialization of blkfront, netfront and pcifront by uniformizing with fbfront: after writing parameters, set state to initialised, then wait for backend to switch to connect state, and then only read its parameter and switch to the connect state. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
* mini-os: Fix memory leaks in blkfront, netfront, pcifront, etc.Keir Fraser2009-12-141-8/+26
| | | | | | | | | The return value of Xenbus routines xenbus_transaction_start(), xenbus_printf(), xenbus_transaction_end(), etc. is a pointer of error message. This pointer should be passed to free() to release the allocated memory when it is no longer needed. Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
* minios: Fix fb/kbd initializationKeir Fraser2009-11-231-0/+2
| | | | | | | When allocating kbdfront and fbfront structures, we should zero them since we do not initialize all fields. Signed-Off-By: Samuel Thibault <samuel.thibault@ens-lyon.org>
* minios: Fix xenbus_unwatch_path callsKeir Fraser2009-11-231-6/+6
| | | | | | | | | | In a lot of places in MiniOS frontends, xenbus_watch_path_token is used instead of xenbus_watch_path to get more precise wake ups. To free those, xenbus_unwatch_path_token has to be used instead of xenbus_unwatch_path, else the unwatch operation will fail. This fixes spurious watch events left by pv-grub. Signed-Off-By: Samuel Thibault <samuel.thibault@ens-lyon.org>
* stubdom/minios: re-structure headersKeir Fraser2009-10-011-7/+7
| | | | | | | | | As part of making stubdom usable on NetBSD, it is necessary to restructure the minios headers to avoid conflicts with NetBSD's crossbuild toolchain. Signed-off-by: Christoph Egger <Christoph.Egger@amd.com> Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
* minios: fix free_fbfrontKeir Fraser2009-06-271-2/+0
| | | | | | | When a stubdom is destroyed, fbfront tries to unbind the evtchn twice. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
* minios: refactor xenbus state machineKeir Fraser2009-06-031-25/+100
| | | | | | | | Implement xenbus_wait_for_state_change and xenbus_switch_state and change the various frontends to use the two functions and do proper error checking. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
* stubdom: use host's gccKeir Fraser2008-07-041-11/+8
| | | | | | | | This makes stubdom use the host's gcc instead of downloading/compiling binutils+gcc. That requires a bunch of changes and even uncovered a few bugs, but saves a lot of time. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* minios: proper frees are now handled, so drop the FIXME commentKeir Fraser2008-07-011-2/+0
| | | | Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* Add PV-GRUBKeir Fraser2008-06-181-2/+22
| | | | | | | | | | | This fetches GRUB1 sources, applies the {graphical, print function, save default, and ext3_256byte} patches from debian, and applies a patch to make it work on x86_64 and port it to Mini-OS. By using libxc, PV-GRUB can then "kexec" the loaded kernel from inside the domain itself, hence permitting to avoid the security-concerned pygrub. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* stubdom: fix using minios frontends directly when libc is activedKeir Fraser2008-06-181-8/+20
| | | | Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* minios: add proper shutdown facilitiesKeir Fraser2008-06-091-0/+4
| | | | Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* minios: free fbfront resources on error/shutdownKeir Fraser2008-05-131-14/+41
| | | | Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* minios: free netfront resources on error/shutdownKeir Fraser2008-05-121-2/+2
| | | | Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* pvfb/ioemu: transmit refresh interval advice from backend to frontendKeir Fraser2008-05-121-0/+55
| | | | | | which permits the frontend to avoid useless polls. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* minios: fix thread safety of xenbus watches by requiring callers toKeir Fraser2008-05-061-12/+19
| | | | | | | provide their own queue of events, because else we can not dispatch to watchers running in parallel. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* stubdom: make use of PVFB resize eventKeir Fraser2008-04-161-31/+45
| | | | | | | | which with the offset support also permits to expose the VGA vram and non-shared vram throught PVFB at the same time, switching between both as appropriate. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* minios: Fix lost eventsKeir Fraser2008-03-181-18/+10
| | | | | | | | | | | | | | | evtchn_bind_interdomain used to clear any already pending event before binding a handler, because else the handler may be called before it is ready. That however leads to missed events, which I had to workaround for the HVM case. This changes the semantics of bind_evtchn, and thus of all the event channel binding functions (bind_virq, evtchn_alloc_unbound, evtchn_bind_interdomain) into not unmasking the event itself, hence letting the caller initialize properly before unmasking the port (e.g. record the port number in an appropriate place). Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* mini-os: fbfront shouldn't send unsolicited updatesKeir Fraser2008-03-031-1/+8
| | | | Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* stubdom: use PVFB so as to e.g. permit SDL displayKeir Fraser2008-02-281-8/+4
| | | | | | | | This adds support in ioemu for PVFB frontend as stubdomain display. This permits for instance to use SDL in dom0 to perform the eventual display. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
* minios: add PVFB supportKeir Fraser2008-02-261-0/+468
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
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