This fixes a common bug with initial region_offset value.
Usually, the pages are re-assigned afterwards, so the bug
has a very small effect on regular QEMU use flows.
Signed-off-by: NAlex Rozenman <Alex_Rozenman@mentor.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This patch fixes a bug where child processes of launch_script() can
misbehave due to SIGCHLD being blocked. In the case of `sudo`, this
causes a permanent hang.

Previously a SIGCHLD handler was added to reap fork_exec()'d zombie
processes by calling waitpid(-1, ...). This required other
fork()/waitpid() callers to temporarilly block SIGCHILD to avoid
having the final wait status being intercepted by the SIGCHLD
handler:

7c3370d4

Since then, the qemu_add_child_watch() interface was added to allow
registration of such processes and reap only from that specific set
of PIDs:

4d54ec78

As a result, we can now avoid blocking SIGCHLD in launch_script(), so
drop that behavior.
Reviewed-by: NJan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Clarify the allocation/free recommendations; this is mostly
just tidying up following the global-search-and-replace done
with the conversion to the GLib g_malloc and friends.
Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Commit f462141f introduced clean up code
when usb_qdev_init() fails.  Unfortunately it calls .handle_destroy()
when .init() was never invoked or failed.  This can lead to crashes when
.handle_destroy() tries to clean up things that were never initialized.

This patch is careful to undo only those steps that completed along the
usb_qdev_init() code path.  It's not as pretty as the unified error
handling in f462141f but it's necessary.
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Commit 95c318f5 (Fix segfault in mmio
subpage handling code.) prevented a segfault by making all subpage
registrations over an existing memory page perform an unassigned access.
Symptoms were writes not taking effect and reads returning zero.

Very small page sizes are not currently supported either,
so subpage memory areas cannot fully be avoided.

Therefore change the previous fix to use a new IO_MEM_SUBPAGE_RAM
instead of IO_MEM_UNASSIGNED. Suggested by Avi.
Reviewed-by: NAvi Kivity <avi@redhat.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Cc: Avi Kivity <avi@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

In help() we do what boils down to:

  printf("%s", "qemu");

This seems to be an artifact of be995c27
("removed unused code"), which removed some ifdef'ery that used to print
a different name depending on CONFIG_SOFTMMU.

Instead print the actual program name, originally from argv[0].
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

We'd like to get the progname for help output, so add an accessor.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Reviewed-by: NAndreas F=E4rber <afaerber@suse.de>
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

On Windows, cpus.c needs access to the hThread.  Add a Windows-specific
function to grab it.  This requires changing the CPU threads to
joinable.  There is no substantial change because the threads run
in an infinite loop.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The full tree search was a bit unreasonable.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This really shows the power of dynamic object properties compared to qdev
static properties.

This property represents a complex structure who's format is preserved over the
wire.  This is enabled by visitors.

It also shows an entirely synthetic property that is not tied to device state.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

We first add a 'peripheral' container to the root device that we add user
created devices to.  This provides all user created devices with a unique and
isolated namespace.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This allows clients to read and write device model properties through QMP.  QAPI
doesn't support Visitor types yet and these commands are special in that they
don't work with fixed types.

I've added a documentation stub to qapi-schema.json so we can keep consistency
there.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This can be used to list properties in the device model.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Links represent an ephemeral relationship between devices.  They are meant to
replace the qdev concept of busses by allowing more informal relationships
between devices.

Links are fairly limited in their usefulness without implementing QOM-style
subclassing and interfaces.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Child properties express a relationship of composition.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

There are two types of supported paths--absolute paths and partial paths.

Absolute paths are derived from the root device and can follow child<> or
link<> properties.  Since they can follow link<> properties, they can be
arbitrarily long.  Absolute paths look like absolute filenames and are prefixed
with a leading slash.

Partial paths are look like relative filenames.  They do not begin with a
prefix.  The matching rules for partial paths are subtle but designed to make
specifying devices easy.  At each level of the composition tree, the partial
path is matched as an absolute path.  The first match is not returned.  At
least two matches are searched for.  A successful result is only returned if
only one match is founded.  If more than one match is found, a flag is returned
to indicate that the match was ambiguous.

At the end of the day, partial path support means that if you create a device
called 'ide0', you can just say 'ide0' as the path name and it will Just Work.
If we internally create a device called 'i440fx', you can just say 'i440fx' and
it will Just Work and long as you don't do anything silly.

A management tool should probably always use absolute paths since then they
don't have to deal with the possibility of ambiguity.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The canonical path is the path in the composition tree from the root to the
device.  This is effectively the name of the device.

This is an incredibly unefficient implementation that will be optimized in
a future patch.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This is based on Jan's suggestion for how to do unique naming.  The root device
is the root of composition.  All devices are reachable via child<> links from
this device.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Expose all legacy properties through the new QOM property mechanism.  The qdev
property types are exposed through the 'legacy<>' namespace.  They are always
visited as strings since they do their own string parsing.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

qdev properties are settable only during construction and static to classes.
This isn't flexible enough for QOM.

This patch introduces a property interface for qdev that provides dynamic
properties that are tied to objects, instead of classes.  These properties are
Visitor based instead of string based too.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

To ensure that a device isn't removed from the graph until all of its links are
broken.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

On ARM, don't map the code buffer at a fixed location, and fix up the
call/goto tcg routines to let it do long jumps.

Mapping the code buffer at a fixed address could sometimes result in it being
mapped over the top of the heap with pretty random results.
Signed-off-by: NDr. David Alan Gilbert <david.gilbert@linaro.org>
Signed-off-by: NAndrzej Zaborowski <andrew.zaborowski@intel.com>

Commit d396a657 removed the code
for SVP, so the documentation needs this update.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

The variable is deleted by 1bcef683
So remove its declaration.
Acked-by: NLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: NIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

Make tcg_const_ptr() include a cast so that you can pass it a
pointer. This allows us to drop the casts we had in all the places
that use this macro.
Acked-by: NAndreas Färber <andreas.faerber@web.de>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

accidently->accidentally
annother->another
choosen->chosen
consideres->considers
decriptor->descriptor
developement->development
paramter->parameter
preceed->precede
preceeding->preceding
priviledge->privilege
propogation->propagation
substraction->subtraction
throught->through
upto->up to
usefull->useful

Fix also grammar in posix-aio-compat.c
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

compatiblity->compatibility
transfered->transferred
transfering->transferring
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

adress->address
advertisment->advertisement
begining->beginning
bondary->boundary
controler->controller
controll->control
convertion->conversion
doesnt->doesn't
existant->existent
instuction->instruction
loosing->losing
managment->management
multipled->multiplied
negotation->negotiation
runing->running
teh->the
unchangable->unchangeable
writen->written
yeild->yield
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

New code introduced old misspellings.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

algorythm->algorithm
rythm->rhythm

I did not try to fix the coding standard, so checkpatch.pl
reports lots of violations.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

VFP4 => VFP3
Signed-off-by: NAndreas Färber <andreas.faerber@web.de>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

VFP3 => VFP
Signed-off-by: NAndreas Färber <andreas.faerber@web.de>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>