In order to do so it modifies map_frames_ex and do_map_frames to take
an int *err as parameter and return any error that way.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
this patch implements dynamic connections and disconnections in
pcifront.
This feature is required to properly support pci hotplug, because when
no pci devices are assigned to a guest, xend will remove the pci
backend altogether.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This patch adds support for mmap on /dev/mem in a stubdom; it is
secure because it only works for memory areas that have been
explicitly allowed by the toolstack (xc_domain_iomem_permission).
Incidentally this is all that is needed to make MSI-X passthrough work
with stubdoms.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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>
The first function is compiled only in case minios is compiled without
newlib, since newlib already provides an implementation for ffs.
On the other hand ffsl and ffsll are always compiled because newlib
misses those functions.
This patch also provides an implementation for __ffsti2 and __ffsdi2
because they are needed by gcc in order to successfully link ffsll.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
We could stub them out as unsupported, but we may as well implement
them as they are very simple.
Signed-off-by: Alex Zeffertt <alex.zeffertt@eu.citrix.com>
This is a port of XenLinux xen_alloc_contig_memory() to mini-os. A
sufficiently privileged mini-os guest can exchange a small number of
its pages with machine contiguous pages.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@netronome.com>
This patch removes all the useless big endian stuff from the mini-os.
Before there was an effort to support big endian for PV-guest.
But the big endian support was never gotten into the common parts of
the mini-os so it makes no sense to have this only in the ia64
specific sources. And as there is no open source big endian os and
porting our BS2000 os to ia64 was stopped, nobody wants that stuff
in the common minos.
So this looks ugly then and remove the big endian stuff.
Signed-off-by: Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>
net/if.h is a standard header but unfortunately lwip doesn't provide
it for any target but linux. Therefore I am adding a net/if.h, with an
empty implementation of the declared functions.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Currently the minios headers do this:
#define current get_current()
Obviously when porting general code to this environment, this can
cause problems !
The attached patch arranges for this only to be done if
#define __MINIOS__
is declared, which is set up by the makefile in extras/mini-os.
Suppressing the namespace pollution is necessary to get recent
upstream qemu's to compile, since they (quite properly) use `current'
as an ordinary identifier.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Adding some missing posix function declarations, to get rid of some
qemu-remote compile time warnings.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
We can decide to make off_t 64bit instead of implementing the LFS
tricks. Name corresponding functions foo64 to permit simple caml
programs linking.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
I've implemented a grant map for mini-os to support the xc_gnttab_*()
functions, the equivalent of gntdev in linux. This is useful for my
work in putting xenstored in a stub domain.
Signed-off-by: Diego Ongaro <diego.ongaro@citrix.com>
allocate_ondemand can be used to allocate addresse space. Primarily
used for mapping MFNs, it can also be used e.g. to map grant refs.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
This adds fixes to the stub domain build into compiling Ian Jackson's
qemu-xen. The most notable change is that mini-os headers now
#include each other through a mini-os/ prefix, so that we can turn all
-I into -isystem and still be sure that we include Mini-OS headers
(and not qemu's console.h or blktaplib's list.h for instance...).
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
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>
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>
Ian Campbell
Keir Fraser
Isaku Yamahata
dietmar.hahn@fujitsu-siemens.com