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.
Keir Fraser [Tue, 11 Nov 2008 11:03:58 +0000 (11:03 +0000)]
minios: add a barebone net/if.h
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.
Keir Fraser [Mon, 27 Oct 2008 18:51:52 +0000 (18:51 +0000)]
minios: do not expose #define current to applications
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>
* Uninitialized dev_bus_addr argument to GNTTABOP_unmap_grant_ref
results in an angry hypervisor.
* Set errno in libxc and return -1 on error.
* op.status is a int16_t, so it should be printed with PRId16.
* Don't print domids[0] or refs[0] if the ptr is NULL. It's more
polite to crash later, after the message has been printed.
Signed-off-by: Diego Ongaro <diego.ongaro@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>
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>
Keir Fraser [Wed, 18 Jun 2008 08:36:47 +0000 (09:36 +0100)]
Add PV-GRUB
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>
Keir Fraser [Tue, 17 Jun 2008 08:36:25 +0000 (09:36 +0100)]
minios,stubdom: Add OBJ_DIR parameter to compile outside sources,
which permits to easily compile mini-os in various flavors. Also clean
some parts of stubdom build.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser [Wed, 28 May 2008 08:30:48 +0000 (09:30 +0100)]
stubdom: make the build more generic by moving as many stubdom parts
into stubdom/ as possible. That also permits to build all of
ioemu, c and caml stubdoms at the same time.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser [Thu, 8 May 2008 12:14:27 +0000 (13:14 +0100)]
minios: fix and enforce block_domain atomicity
To ensure that the timer event is not lost, block_domain requires that
event delivery is disabled. SCHEDOP_block re-enables them, so for
coherency (and fixing a bug actually), we should re-disable them
after. Also, make sure that the caller disabled them.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser [Thu, 8 May 2008 10:53:39 +0000 (11:53 +0100)]
minios: clear the event before calling the handler since (especially
in the SMP case) the handler may make another domain send an event
again, and that must not be lost.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser [Tue, 6 May 2008 15:35:44 +0000 (16:35 +0100)]
minios: drop volatile qualifier from some status variables
since we already use memory barriers as approriate to prevent
concurrent access with event handlers.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser [Tue, 6 May 2008 12:34:52 +0000 (13:34 +0100)]
minios: fix thread safety of xenbus watches by requiring callers to
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 event
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: simplify schedule()
- Merge the search, wakeup, and timeout loops.
- Avoid unnecessarily switching to the idle thread.
- Perform stack release _after_ we get out of it.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
stubdom: sparse application's BSS by linking it separately first, put
markers at its beginning and end, and then link with mini-os.
That permits to stick a bit more to upstream qemu.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
It has to check first if the memory to free is so big as to be freed
directly by free_pages. mini-os domains crash without this patch if
vfb is misconfigured.
Keir Fraser [Wed, 26 Mar 2008 13:15:00 +0000 (13:15 +0000)]
minios: blkfront_aio_poll may reenter
if the callback calls blkfront_sync for instance.
In such a case, we would see responses and hence release grants
several times. We need to be more synchronous and stop when we detect
that we have re-entered.
This fixes HVM restore with stubdomains.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
Keir Fraser [Wed, 26 Mar 2008 13:13:50 +0000 (13:13 +0000)]
minios: more assertions
- assert that we never allocate or free the same grant twice
- assert that network packets do not exceed a page
- assert that incoming network event IDs make sense
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
projects / people / liuw / libxenctrl-split / mini-os.git / log