To allow for more flexibility, this notifies domain shutdown through a
function rather than a wake queue, to let the application use a wake
queue only if it wishes.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Committed-by: Keir Fraser <keir@xen.org>
Shutdown variables are meaningless when CONFIG_XENBUS=n since no
shutdown event will ever happen. Better make sure that no code tries
to use it and never get the hoped shutdown event.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Committed-by: Keir Fraser <keir@xen.org>
This fixes the build of the xenstore stub domain, which should never
be shut down and so does not need this feature.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Committed-by: Keir Fraser <keir@xen.org>
Add a thread watching the xenbus shutdown control path and notifies a
wait queue.
Add HYPERVISOR_shutdown convenient inline for minios shutdown.
Add proper shutdown to the minios test application.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Committed-by: Keir Fraser <keir@xen.org>
This adds compile-time logic to disable certain frontends in mini-os:
- pcifront is disabled by default, enabled for ioemu
- blkfront, netfront, fbfront, kbdfront, consfront are enabled by default
- xenbus is required for any frontend, and is enabled by default
If all frontends and xenbus are disabled, mini-os will run without
needing to communicate with xenstore, making it suitable to run the
xenstore daemon. The console frontend is not required for the initial
console, only consoles opened via openpt or ptmx.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
This blocks the main thread indefinitely if there is no PCI backend present in
xenstore.
Even in the case where there are passthrough devices configured libxl creates
the stubdom and waits for it to startup _before_ adding the backend. Since the
stub domains main thread is blocked before it can write the "running" state to
xenstore the toolstack eventually times out and kills everything.
There is already a separate pcifront thread which waits for the backend to
appear and calls init_pcifront at the appropriate time should a backend ever
appear.
Unfortunately I don't have any free test boxes with VT-d so I haven't been able
to test the cases where PCI deivces are passed through but I obviously have
tested that I can now start an HVM domain with stub qemu without PCI devices
passed through which I couldn't do before so this is an improvement. This stuff
is a bit like pushing the lump around the carpet :-/
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson.citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Its access controls are really not OK. In particular, it's not good for
libxl, which stores per-VM config blobs in a directory that is exported
to all VMs.
This will break stub-qemu save/restore, which is the only user of
fs-front that I'm aware of, but:
- It's currently broken anyway (fs-back isn't run by default and crashes
if it is run manually); and
- Stefano has a plan to plumb qemu save records through a dedicated
console channel instead.
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
To enqueue the kbdfront thread on two separate wait queues, we need
two different wait elements.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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>
Major clean up of mm.c. Added comments, fixed coding style, more
sensible variable names, mark some local functions static etc.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@netronome.com>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
- Avoid nested function to avoid a trampoline.
- Do not link mini-os_app.o when it is empty.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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>
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>
a) 64-bit switch_to scheduler macro (by Aravindh Puthiyaparambil)
b) implements 64-bit hypervisor_callback
c) fixes thread creation issues (thread_starter used to perform
initialisation)
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
version compiles and starts up, but I'm not really sure how to test the new
xenbus implementation.
* Added unbind_evtchn
* Copied parts of the Linux spinlock implementation to make the changes to
xenbus compared to Linux smaller. Also added a dummy rwsem implementation.
* Updated the xenbus-files
Signed-off-by: Simon Kagstrom <simon.kagstrom@bth.se>
is pretty big, but this is mostly because I've replaced hypervisor.h with the
hypercalls.h header file from Linux (which seems easier to maintain
anyway). I've ignored X86_64.
Signed-off-by: Simon Kagstrom <simon.kagstrom@bth.se>
to simplify the porting. 64 bit version of Mini-os now compiles, but does not work
because of the pagetables and some bits of scheduler not being written.
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
Samuel Thibault
Samuel Thibault
Daniel De Graaf
Ian Campbell
Tim Deegan
Keir Fraser
kfraser@localhost.localdomain
kaf24@firebug.cl.cam.ac.uk