This fixes the sparse tree buildconfigs to allow xenU to build
automatically. There's no need to force netdev front/back on from
the arch Kconfig file anymore. Based on patch from Akio Takebe &
Yoshiro Fujita.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
This patch makes frontend drivers being shutdown when devices_shutdown()
is called and walks down the device tree. Most of it is handled by the
xenbus core, which got a new function for the bus->shutdown callback.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
Driver changes: Make backend drivers check it when entering Closed
state, only unregister devices when the "online" node is either "0" or
not present. The later maintains backward compatibility.
Tools changes: Update "online" node when creating and hot-unplugging
devices.
Background: When kexec'ing a new kernel, the old kernel's frontend
driver will shutdown, but the backend device should *NOT* disappear
due to that, so the new kernel instance can reconnect.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
This is because it should only contain real I/O memory address ranges,
otherwise we can get false conflicts between a real I/O range and a
'pseudophysical' RAM range, causing drivers to fail to work in a domU.
Also prevent kernel code/data being requested as iomem resources --
they are not contiguous in 'io memory' space so this would not make
sense.
Signed-off-by: Keir Fraser <keir@xensource.com>
open_netdev is called as very last thing in netdev_probe.
This closes at least one initialization race: uninitialized
mac address is visible for a short time in
/sys/class/net/${if}/address
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
This will allow the tools management to be revised independently
of dom0 kernel interfaces. Currently tools cannot be 'smarter'
than the kernel in terms of hypercalls they know about, because
the kernel disallows access to any hypercalls it does not know
about.
Signed-off-by: Keir Fraser <keir@xensource.com>
ELF notes provide a cleaner interface for passing Xen specific
information from the kernel to the domain builder than the existing
__xen_guest section string. The __xen_guest string is retained in
kernels built with 3.0.2 compatability for domU however dom0 requires
the new interface.
Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
This may allow guest kernels to be run outside ring 3 in future, and
also provides scope for optimisations today (e.g., using global bit on
user mappings).
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
i386 version is taken from 2.6.18-rc4-mm1 and x86_64 version has been
submitted for inclusion.
Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Again needed for domU kexec, so the next kernel instance can register
watches without running into -EBUSY.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
and handle frontend state transition from "Closing" to "Initialising".
Instead of destroying the backend device then they wait for a
reconnect from the frontend. Needed for domU kexec support, to hand over
devices from one kernel instance to the next.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
* move function prototypes to the top of the file.
* uses the "struct bus_type" function pointers instead
of overwriting the "struct device_driver" ones for
xenbus_dev_probe() and xenbus_dev_remove().
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
have extended checksum-offload info fields in teh skbuff structure.
Based on a patch from Steven Smith <ssmith@xensource.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
