Commit Graph

283 Commits

Author SHA1 Message Date
Alex Bennée
e0eeb4a21a cpus: pass CPUState to run_on_cpu helpers
CPUState is a fairly common pointer to pass to these helpers. This means
if you need other arguments for the async_run_on_cpu case you end up
having to do a g_malloc to stuff additional data into the routine. For
the current users this isn't a massive deal but for MTTCG this gets
cumbersome when the only other parameter is often an address.

This adds the typedef run_on_cpu_func for helper functions which has an
explicit CPUState * passed as the first parameter. All the users of
run_on_cpu and async_run_on_cpu have had their helpers updated to use
CPUState where available.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
[Sergey Fedorov:
 - eliminate more CPUState in user data;
 - remove unnecessary user data passing;
 - fix target-s390x/kvm.c and target-s390x/misc_helper.c]
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au> (ppc parts)
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> (s390 parts)
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <1470158864-17651-3-git-send-email-alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-27 11:57:29 +02:00
Igor Mammedov
a07f953ef4 exec: Set cpu_index only if it's not been explictly set
It keeps the legacy behavior for all users that doesn't care
about stable cpu_index value, but would allow boards that
would support device_add/device_del to set stable cpu_index
that won't depend on order in which cpus are created/destroyed.

While at that simplify cpu_get_free_index() as cpu_index
generated by USER_ONLY and softmmu variants is the same
since none of the users support cpu-remove so far, except
of not yet released spapr/x86 device_add/delr, which
will be altered by follow up patches to set stable
cpu_index manually.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2016-07-26 15:32:01 -03:00
Lluís Vilanova
4815185902 trace: Add per-vCPU tracing states for events with the 'vcpu' property
Each vCPU gets a 'trace_dstate' bitmap to control the per-vCPU dynamic
tracing state of events with the 'vcpu' property.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-07-18 18:23:12 +01:00
Sergey Sorokin
b35399bb4e Fix confusing argument names in some common functions
There are functions tlb_fill(), cpu_unaligned_access() and
do_unaligned_access() that are called with access type and mmu index
arguments. But these arguments are named 'is_write' and 'is_user' in their
declarations. The patches fix the arguments to avoid a confusion.

Signed-off-by: Sergey Sorokin <afarallax@yandex.ru>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-id: 1465907177-1399402-1-git-send-email-afarallax@yandex.ru
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-07-12 13:06:08 +01:00
Igor Mammedov
62a48a2a57 cpu: Use CPUClass->parse_features() as convertor to global properties
Currently CPUClass->parse_features() is used to parse -cpu
features string and set properties on created CPU instances.

But considering that features specified by -cpu apply to every
created CPU instance, it doesn't make sense to parse the same
features string for every CPU created. It also makes every target
that cares about parsing features string explicitly call
CPUClass->parse_features() parser, which gets in a way if we
consider using generic device_add for CPU hotplug as device_add
has not a clue about CPU specific hooks.

Turns out we can use global properties mechanism to set
properties on every created CPU instance for a given type. That
way it's possible to convert CPU features into a set of global
properties for CPU type specified by -cpu cpu_model and common
Device.device_post_init() will apply them to CPU of given type
automatically regardless whether it's manually created CPU or CPU
created with help of device_add.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2016-07-07 15:25:01 -03:00
Changlong Xie
ada03a0e84 qom: Fix comment typo
It's qom_unref, not qdef_unref.

Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2016-07-06 09:19:35 +02:00
Bharata B Rao
3f97b53a68 qom: API to get instance_size of a type
Add an API object_type_get_size(const char *typename) that returns the
instance_size of the give typename.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-06-17 16:33:48 +10:00
Peter Maydell
030c98aff1 all: Remove unnecessary glib.h includes
Remove glib.h includes, as it is provided by osdep.h.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-06-07 18:19:24 +03:00
Bharata B Rao
2c579042e3 cpu: Add a sync version of cpu_remove()
This sync API will be used by the CPU hotplug code to wait for the CPU to
completely get removed before flagging the failure to the device_add
command.

Sync version of this call is needed to correctly recover from CPU
realization failures when ->plug() handler fails.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-05-30 14:17:05 +10:00
Gu Zheng
4c055ab54f cpu: Reclaim vCPU objects
In order to deal well with the kvm vcpus (which can not be removed without any
protection), we do not close KVM vcpu fd, just record and mark it as stopped
into a list, so that we can reuse it for the appending cpu hot-add request if
possible. It is also the approach that kvm guys suggested:
https://www.mail-archive.com/kvm@vger.kernel.org/msg102839.html

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
               [- Explicit CPU_REMOVE() from qemu_kvm/tcg_destroy_vcpu()
                  isn't needed as it is done from cpu_exec_exit()
                - Use iothread mutex instead of global mutex during
                  destroy
                - Don't cleanup vCPU object from vCPU thread context
                  but leave it to the callers (device_add/device_del)]
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-05-30 14:03:59 +10:00
Paolo Bonzini
63c915526d cpu: move exec-all.h inclusion out of cpu.h
exec-all.h contains TCG-specific definitions.  It is not needed outside
TCG-specific files such as translate.c, exec.c or *helper.c.

One generic function had snuck into include/exec/exec-all.h; move it to
include/qom/cpu.h.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19 16:42:29 +02:00
Paolo Bonzini
4b4629d9d2 include: move CPU-related definitions out of qemu-common.h
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-19 13:08:04 +02:00
Sergey Fedorov
3213525f8a tcg: Remove needless CPUState::current_tb
This field was used for telling cpu_interrupt() to unlink a chain of TBs
being executed when it worked that way. Now, cpu_interrupt() don't do
this anymore. So we don't need this field anymore.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Message-Id: <1462273462-14036-1-git-send-email-sergey.fedorov@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-05-12 14:06:42 -10:00
Sergey Fedorov
6f789be56d tcg: Rework tb_invalidated_flag
'tb_invalidated_flag' was meant to catch two events:
 * some TB has been invalidated by tb_phys_invalidate();
 * the whole translation buffer has been flushed by tb_flush().

Then it was checked:
 * in cpu_exec() to ensure that the last executed TB can be safely
   linked to directly call the next one;
 * in cpu_exec_nocache() to decide if the original TB should be provided
   for further possible invalidation along with the temporarily
   generated TB.

It is always safe to patch an invalidated TB since it is not going to be
used anyway. It is also safe to call tb_phys_invalidate() for an already
invalidated TB. Thus, setting this flag in tb_phys_invalidate() is
simply unnecessary. Moreover, it can prevent from pretty proper linking
of TBs, if any arbitrary TB has been invalidated. So just don't touch it
in tb_phys_invalidate().

If this flag is only used to catch whether tb_flush() has been called
then rename it to 'tb_flushed'. Declare it as 'bool' and stick to using
only 'true' and 'false' to set its value. Also, instead of setting it in
tb_gen_code(), just after tb_flush() has been called, do it right inside
of tb_flush().

In cpu_exec(), this flag is used to track if tb_flush() has been called
and have made 'next_tb' (a reference to the last executed TB) invalid
for linking it to directly call the next TB. tb_flush() can be called
during the CPU execution loop from tb_gen_code(), during TB execution or
by another thread while 'tb_lock' is released. Catch for translation
buffer flush reliably by resetting this flag once before first TB lookup
and each time we find it set before trying to add a direct jump. Don't
touch in in tb_find_physical().

Each vCPU has its own execution loop in multithreaded mode and thus
should have its own copy of the flag to be able to reset it with its own
'next_tb' and don't affect any other vCPU execution thread. So make this
flag per-vCPU and move it to CPUState.

In cpu_exec_nocache(), we only need to check if tb_flush() has been
called from tb_gen_code() called by cpu_exec_nocache() itself. To do
this reliably, preserve the old value of the flag, reset it before
calling tb_gen_code(), check afterwards, and combine the saved value
back to the flag.

This patch is based on the patch "tcg: move tb_invalidated_flag to
CPUState" from Paolo Bonzini <pbonzini@redhat.com>.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-05-12 14:06:42 -10:00
Markus Armbruster
51b9b478cc qom: -object error messages lost location, restore it
qemu_opts_foreach() runs its callback with the error location set to
the option's location.  Any errors the callback reports use the
option's location automatically.

Commit 90998d5 moved the actual error reporting from "inside"
qemu_opts_foreach() to after it.  Here's a typical hunk:

	 if (qemu_opts_foreach(qemu_find_opts("object"),
    -                          object_create,
    -                          object_create_initial, NULL)) {
    +                          user_creatable_add_opts_foreach,
    +                          object_create_initial, &err)) {
    +        error_report_err(err);
	     exit(1);
	 }

Before, object_create() reports from within qemu_opts_foreach(), using
the option's location.  Afterwards, we do it after
qemu_opts_foreach(), using whatever location happens to be current
there.  Commonly a "none" location.

This is because Error objects don't have location information.
Problematic.

Reproducer:

    $ qemu-system-x86_64 -nodefaults -display none -object secret,id=foo,foo=bar
    qemu-system-x86_64: Property '.foo' not found

Note no location.  This commit restores it:

    qemu-system-x86_64: -object secret,id=foo,foo=bar: Property '.foo' not found

Note that the qemu_opts_foreach() bug just fixed could mask the bug
here: if the location it leaves dangling hasn't been clobbered, yet,
it's the correct one.

Reported-by: Eric Blake <eblake@redhat.com>
Cc: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1461767349-15329-4-git-send-email-armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[Paragraph on Error added to commit message]
2016-04-28 08:19:36 +02:00
Peter Maydell
84a5a80148 * Log filtering from Alex and Peter
* Chardev fix from Marc-André
 * config.status tweak from David
 * Header file tweaks from Markus, myself and Veronia (Outreachy candidate)
 * get_ticks_per_sec() removal from Rutuja (Outreachy candidate)
 * Coverity fix from myself
 * PKE implementation from myself, based on rth's XSAVE support
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Log filtering from Alex and Peter
* Chardev fix from Marc-André
* config.status tweak from David
* Header file tweaks from Markus, myself and Veronia (Outreachy candidate)
* get_ticks_per_sec() removal from Rutuja (Outreachy candidate)
* Coverity fix from myself
* PKE implementation from myself, based on rth's XSAVE support

# gpg: Signature made Thu 24 Mar 2016 20:15:11 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (28 commits)
  target-i386: implement PKE for TCG
  config.status: Pass extra parameters
  char: translate from QIOChannel error to errno
  exec: fix error handling in file_ram_alloc
  cputlb: modernise the debug support
  qemu-log: support simple pid substitution for logs
  target-arm: dfilter support for in_asm
  qemu-log: dfilter-ise exec, out_asm, op and opt_op
  qemu-log: new option -dfilter to limit output
  qemu-log: Improve the "exec" TB execution logging
  qemu-log: Avoid function call for disabled qemu_log_mask logging
  qemu-log: correct help text for -d cpu
  tcg: pass down TranslationBlock to tcg_code_gen
  util: move declarations out of qemu-common.h
  Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND
  hw: explicitly include qemu-common.h and cpu.h
  include/crypto: Include qapi-types.h or qemu/bswap.h instead of qemu-common.h
  isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.h
  Move ParallelIOArg from qemu-common.h to sysemu/char.h
  Move QEMU_ALIGN_*() from qemu-common.h to qemu/osdep.h
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Conflicts:
	scripts/clean-includes
2016-03-24 21:42:40 +00:00
Markus Armbruster
14b6d44d47 Use scripts/clean-includes to drop redundant qemu/typedefs.h
Re-run scripts/clean-includes to apply the previous commit's
corrections and updates.  Besides redundant qemu/typedefs.h, this only
finds a redundant config-host.h include in ui/egl-helpers.c.  No idea
how that escaped the previous runs.

Some manual whitespace trimming around dropped includes squashed in.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00
Markus Armbruster
da34e65cb4 include/qemu/osdep.h: Don't include qapi/error.h
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef.  Since then, we've moved to include qemu/osdep.h
everywhere.  Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h.  That's in excess of
100KiB of crap most .c files don't actually need.

Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h.  Include qapi/error.h in .c files that need it and don't
get it now.  Include qapi-types.h in qom/object.h for uint16List.

Update scripts/clean-includes accordingly.  Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h.  Update the list of includes in the qemu/osdep.h
comment quoted above similarly.

This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third.  Unfortunately, the number depending on
qapi-types.h shrinks only a little.  More work is needed for that one.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:15 +01:00
Stefan Weil
8ff98f1ed2 Remove unneeded include statements for setjmp.h
As soon as setjmp.h is included from qemu/osdep.h, those old include
statements are no longer needed.

Add also setjmp.h to the list in scripts/clean-includes.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
2016-03-22 19:11:15 +01:00
Lluís Vilanova
b23197f9cf typedefs: Add CPUState
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Message-id: 145641861239.30295.8564457138934628740.stgit@localhost
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-03-01 13:27:09 +00:00
Peter Maydell
90ce6e2644 include: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

NB: If this commit breaks compilation for your out-of-tree
patchseries or fork, then you need to make sure you add
#include "qemu/osdep.h" to any new .c files that you have.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23 12:43:05 +00:00
Daniel P. Berrange
90998d5896 qom: add helpers for UserCreatable object types
The QMP monitor code has two helper methods object_add
and qmp_object_del that are called from several places
in the code (QMP, HMP and main emulator startup).

The HMP and main emulator startup code also share
further logic that extracts the qom-type & id
values from a qdict.

We soon need to use this logic from qemu-img, qemu-io
and qemu-nbd too, but don't want those to depend on
the monitor, nor do we want to duplicate the code.

To avoid this, move some code out of qmp.c and hmp.c
adding new methods to qom/object_interfaces.c

 - user_creatable_add - takes a QDict holding a full
   object definition & instantiates it
 - user_creatable_add_type - takes an ID, type name,
   and QDict holding object properties & instantiates
   it
 - user_creatable_add_opts - takes a QemuOpts holding
   a full object definition & instantiates it
 - user_creatable_add_opts_foreach - variant on
   user_creatable_add_opts which can be directly used
   in conjunction with qemu_opts_foreach.
 - user_creatable_del - takes an ID and deletes the
   corresponding object

The existing code is updated to use these new methods.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1455129674-17255-2-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-02-16 17:12:57 +01:00
Peter Maydell
fc1ec1acff trivial patches for 2016-02-11
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Merge remote-tracking branch 'remotes/mjt/tags/pull-trivial-patches-2016-02-11' into staging

trivial patches for 2016-02-11

# gpg: Signature made Thu 11 Feb 2016 12:16:04 GMT using RSA key ID A4C3D7DB
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg:                 aka "Michael Tokarev <mjt@corpit.ru>"
# gpg:                 aka "Michael Tokarev <mjt@debian.org>"

* remotes/mjt/tags/pull-trivial-patches-2016-02-11:
  w32: include winsock2.h before windows.h
  Adds keycode 86 to the hid_usage_keys translation table.
  s390x: remove s390-zipl.rom
  Passthru CCID card: QOMify
  Emulated CCID card: QOMify
  ES1370: QOMify
  char: fix parameter name / type in BSD codepath
  qmp-spec: fix index in doc
  rdma: remove check on time_spent when calculating mbs
  qemu-sockets: simplify error handling
  cpu: cpu_save/cpu_load is no more
  qom: Correct object_property_get_int() description
  man: virtfs-proxy-helper: Rework awkward sentence
  remove libtool support

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-11 15:09:33 +00:00
Alistair Francis
b29b47e9b3 qom: Correct object_property_get_int() description
The description of object_property_get_int() stated that on an error
it returns NULL. This is not the case and the function will return -1
if an error occurs. Update the commented documentation accordingly.

Reported-By: Christian Liebhardt <christian.liebhardt@keysight.com>
Signed-off-by: Christian Liebhardt <christian.liebhardt@keysight.com>
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-02-11 15:15:46 +03:00
Sergey Fedorov
568496c0c0 cpu: Add callback to check architectural watchpoint match
When QEMU watchpoint matches, that is not definitely an architectural
watchpoint match yet. If it is a stop-before-access watchpoint then that
is hardly possible to ignore it after throwing a TCG exception.

A special callback is introduced to check for architectural watchpoint
match before raising a TCG exception.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1454256948-10485-2-git-send-email-serge.fdrv@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-11 11:17:32 +00:00
Eric Blake
d7bce9999d qom: Swap 'name' next to visitor in ObjectPropertyAccessor
Similar to the previous patch, it's nice to have all functions
in the tree that involve a visitor and a name for conversion to
or from QAPI to consistently stick the 'name' parameter next
to the Visitor parameter.

Done by manually changing include/qom/object.h and qom/object.c,
then running this Coccinelle script and touching up the fallout
(Coccinelle insisted on adding some trailing whitespace).

    @ rule1 @
    identifier fn;
    typedef Object, Visitor, Error;
    identifier obj, v, opaque, name, errp;
    @@
     void fn
    - (Object *obj, Visitor *v, void *opaque, const char *name,
    + (Object *obj, Visitor *v, const char *name, void *opaque,
       Error **errp) { ... }

    @@
    identifier rule1.fn;
    expression obj, v, opaque, name, errp;
    @@
     fn(obj, v,
    -   opaque, name,
    +   name, opaque,
        errp)

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1454075341-13658-20-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-08 17:29:56 +01:00
Eric Blake
4fa45492c3 qom: Use typedef for Visitor
No need to repeat 'struct Visitor' when we already have it in
typedefs.h.  Omitting the redundant 'struct' also makes a later
patch easier to search for all object property callbacks that
are associated with a Visitor.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1454075341-13658-18-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-08 17:29:56 +01:00
David Hildenbrand
b3820e6ca0 gdb: provide the name of the architecture in the target.xml
This patch provides the name of the architecture in the target.xml
if available.

This allows the remote gdb to detect the target architecture on its
own - so there is no need to specify it manually (e.g. if gdb is
started without a binary) using "set arch *arch_name*".

The name of the architecture is provided by a callback that can
be implemented by all architectures. The arm implementation has
special handling for iwmmxt and returns arm otherwise. This can
be extended if necessary.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[rework to use a callback]
Message-Id: <1449144881-130935-1-git-send-email-borntraeger@de.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-27 15:34:48 +01:00
Peter Crosthwaite
6731d864f8 qom/cpu: Add MemoryRegion property
Add a MemoryRegion property, which if set is used to construct
the CPU's initial (default) AddressSpace.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[PMM: code is moved from qom/cpu.c to exec.c to avoid having to
 make qom/cpu.o be a non-common object file; code to use the
 MemoryRegion and to default it to system_memory added.]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2016-01-21 14:15:06 +00:00
Peter Maydell
d7f25a9e6a cpu: Add new asidx_from_attrs() method
Add a new method to CPUClass which the memory system core can
use to obtain the correct address space index to use for a memory
access with a given set of transaction attributes, together
with the wrapper function cpu_asidx_from_attrs() which implements
the default behaviour ("always use asidx 0") for CPU classes
which don't provide the method.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2016-01-21 14:15:05 +00:00
Peter Maydell
1dc6fb1f5c cpu: Add new get_phys_page_attrs_debug() method
Add a new optional method get_phys_page_attrs_debug() to CPUClass.
This is like the existing get_phys_page_debug(), but also returns
the memory transaction attributes to use for the access.
This will be necessary for CPUs which have multiple address
spaces and use the attributes to select the correct address
space.

We provide a wrapper function cpu_get_phys_page_attrs_debug()
which falls back to the existing get_phys_page_debug(), so we
don't need to change every target CPU.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2016-01-21 14:15:05 +00:00
Peter Maydell
12ebc9a76d exec.c: Allow target CPUs to define multiple AddressSpaces
Allow multiple calls to cpu_address_space_init(); each
call adds an entry to the cpu->ases array at the specified
index. It is up to the target-specific CPU code to actually use
these extra address spaces.

Since this multiple AddressSpace support won't work with
KVM, add an assertion to avoid confusing failures.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2016-01-21 14:15:04 +00:00
Daniel P. Berrange
7746abd8e9 qom: Change object property iterator API contract
Currently the ObjectProperty iterator API works as follows:

  ObjectPropertyIterator *iter;

  iter = object_property_iter_init(obj);
  while ((prop = object_property_iter_next(iter))) {
     ...
  }
  object_property_iter_free(iter);

This has the benefit that the ObjectPropertyIterator struct
can be opaque, but has the downside that callers need to
explicitly call a free function. It is also not in keeping
with iterator style used elsewhere in QEMU/GLib2.

This patch changes the API to use stack allocation instead:

  ObjectPropertyIterator iter;

  object_property_iter_init(&iter, obj);
  while ((prop = object_property_iter_next(&iter))) {
     ...
  }

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[AF: Fused ObjectPropertyIterator struct with typedef]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2016-01-18 17:47:58 +01:00
Daniel P. Berrange
16bf7f522a qom: Allow properties to be registered against classes
When there are many instances of a given class, registering
properties against the instance is wasteful of resources. The
majority of objects have a statically defined list of possible
properties, so most of the properties are easily registerable
against the class. Only those properties which are conditionally
registered at runtime need be recorded against the klass.

Registering properties against classes also makes it possible
to provide static introspection of QOM - currently introspection
is only possible after creating an instance of a class, which
severely limits its usefulness.

This impl only supports simple scalar properties. It does not
attempt to allow child object / link object properties against
the class. There are ways to support those too, but it would
make this patch more complicated, so it is left as an exercise
for the future.

There is no equivalent to object_property_del() provided, since
classes must be immutable once they are defined.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2016-01-18 17:47:58 +01:00
Cao jin
70ae0b6d0e qom: Update documentation comment of struct Object
It doesn't have "GSList *interfaces" anymore, drop the paragraph.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-12-03 20:10:22 +01:00
Pavel Fedin
b604a854e8 qom: Replace object property list with GHashTable
ARM GICv3 systems with large number of CPUs create lots of IRQ pins. Since
every pin is represented as a property, number of these properties becomes
very large. Every property add first makes sure there's no duplicates.
Traversing the list becomes very slow, therefore QEMU initialization takes
significant time (several seconds for e. g. 16 CPUs).

This patch replaces list with GHashTable, making lookup very fast. The only
drawback is that object_child_foreach() and object_child_foreach_recursive()
cannot add or remove properties during traversal, since GHashTableIter does
not have modify-safe version. However, the code seems not to modify objects
via these functions.

Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Tested-by: Pavel Fedin <p.fedin@samsung.com>
[AF: Fixed object_property_del_{all,child}() issues;
     g_hash_table_contains() -> g_hash_table_lookup(), suggested by Daniel]
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-11-19 15:00:15 +01:00
Daniel P. Berrange
a00c948241 qom: Introduce ObjectPropertyIterator struct for iteration
Some users of QOM need to be able to iterate over properties
defined against an object instance. Currently they are just
directly using the QTAIL macros against the object properties
data structure.

This is bad because it exposes them to changes in the data
structure used to store properties, as well as changes in
functionality such as ability to register properties against
the class.

This provides an ObjectPropertyIterator struct which will
insulate the callers from the particular data structure
used to store properties. It can be used thus

  ObjectProperty *prop;
  ObjectPropertyIterator *iter;

  iter = object_property_iter_init(obj);
  while ((prop = object_property_iter_next(iter))) {
      ... do something with prop ...
  }
  object_property_iter_free(iter);

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Tested-by: Pavel Fedin <p.fedin@samsung.com>
[AF: Fixed examples, style cleanups]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-11-18 21:13:38 +01:00
Cao jin
b30d805464 qom/object: fix 2 comment typos
Also change the misleading definition of macro OBJECT_CLASS_CHECK

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-11-06 15:42:38 +03:00
Peter Maydell
32857f4d5e exec.c: Collect AddressSpace related fields into a CPUAddressSpace struct
Gather up all the fields currently in CPUState which deal with the CPU's
AddressSpace into a separate CPUAddressSpace struct. This paves the way
for allowing the CPU to know about more than one AddressSpace.

The rearrangement also allows us to make the MemoryListener a directly
embedded object in the CPUAddressSpace (it could not be embedded in
CPUState because 'struct MemoryListener' isn't defined for the user-only
builds). This allows us to resolve the FIXME in tcg_commit() by going
directly from the MemoryListener to the CPUAddressSpace.

This patch extracts the actual update of the cached dispatch pointer
from cpu_reload_memory_map() (which is renamed accordingly to
cpu_reloading_memory_map() as it is only responsible for breaking
cpu-exec.c's RCU critical section now). This lets us keep the definition
of the CPUAddressSpace struct private to exec.c.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1443709790-25180-4-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-10-12 18:29:26 +02:00
Richard Henderson
b933066ae0 target-*: Introduce and use cpu_breakpoint_test
Reduce the boilerplate required for each target.  At the same time,
move the test for breakpoint after calling tcg_gen_insn_start.

Note that arm and aarch64 do not use cpu_breakpoint_test, but still
move the inline test down after tcg_gen_insn_start.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-10-07 20:36:28 +11:00
Jason J. Herne
2adcc85d40 cpu: Provide vcpu throttling interface
Provide a method to throttle guest cpu execution. CPUState is augmented with
timeout controls and throttle start/stop functions. To throttle the guest cpu
the caller simply has to call the throttle set function and provide a percentage
of throttle time.

Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
2015-09-30 09:42:04 +02:00
Andrey Smetanin
bac05aa9a7 cpu: Add crash_occurred flag into CPUState
CPUState::crash_occurred field inside CPUState marks
that guest crash occurred. This value is added into
cpu common migration subsection.

Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Andreas Färber <afaerber@suse.de>
Message-Id: <1435924905-8926-12-git-send-email-den@openvz.org>
[Document the new field. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-16 17:33:32 +02:00
Peter Maydell
a2aa09e181 * Support for jemalloc
* qemu_mutex_lock_iothread "No such process" fix
 * cutils: qemu_strto* wrappers
 * iohandler.c simplification
 * Many other fixes and misc patches.
 
 And some MTTCG work (with Emilio's fixes squashed):
 * Signal-free TCG kick
 * Removing spinlock in favor of QemuMutex
 * User-mode emulation multi-threading fixes/docs
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Support for jemalloc
* qemu_mutex_lock_iothread "No such process" fix
* cutils: qemu_strto* wrappers
* iohandler.c simplification
* Many other fixes and misc patches.

And some MTTCG work (with Emilio's fixes squashed):
* Signal-free TCG kick
* Removing spinlock in favor of QemuMutex
* User-mode emulation multi-threading fixes/docs

# gpg: Signature made Thu 10 Sep 2015 09:03:07 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (44 commits)
  cutils: work around platform differences in strto{l,ul,ll,ull}
  cpu-exec: fix lock hierarchy for user-mode emulation
  exec: make mmap_lock/mmap_unlock globally available
  tcg: comment on which functions have to be called with mmap_lock held
  tcg: add memory barriers in page_find_alloc accesses
  remove unused spinlock.
  replace spinlock by QemuMutex.
  cpus: remove tcg_halt_cond and tcg_cpu_thread globals
  cpus: protect work list with work_mutex
  scripts/dump-guest-memory.py: fix after RAMBlock change
  configure: Add support for jemalloc
  add macro file for coccinelle
  configure: factor out adding disas configure
  vhost-scsi: fix wrong vhost-scsi firmware path
  checkpatch: remove tests that are not relevant outside the kernel
  checkpatch: adapt some tests to QEMU
  CODING_STYLE: update mixed declaration rules
  qmp: Add example usage of strto*l() qemu wrapper
  cutils: Add qemu_strtoull() wrapper
  cutils: Add qemu_strtoll() wrapper
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-14 16:13:16 +01:00
Paolo Bonzini
376692b9dc cpus: protect work list with work_mutex
Protect the list of queued work items with something other than
the BQL, as a preparation for running the work items outside it.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09 15:34:55 +02:00
Paolo Bonzini
e0c382113f tcg: signal-free qemu_cpu_kick
Signals are slow and do not exist on Win32.  The previous patches
have done most of the legwork to introduce memory barriers (some
of them were even there already for the sake of Windows!) and
we can now set the flags directly in the iothread.

qemu_cpu_kick_thread is not used anymore on TCG, since the TCG thread is
never outside usermode while the CPU is running (not halted).  Instead run
the content of the signal handler (now in qemu_cpu_kick_no_halt) directly.
qemu_cpu_kick_no_halt is also used in qemu_mutex_lock_iothread to avoid
the overhead of qemu_cond_broadcast.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09 15:34:54 +02:00
Paolo Bonzini
f240eb6fdc remove qemu/tls.h
TLS is now required on all platforms, so DECLARE_TLS/DEFINE_TLS is not
needed anymore.  Removing it does not break Windows because of the
previous patch.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-09 15:34:53 +02:00
Peter Crosthwaite
d714b8de77 qom: Add recursive version of object_child_for_each
Useful for iterating through an entire QOM subtree.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1441383782-24378-2-git-send-email-peter.maydell@linaro.org
2015-09-08 17:38:43 +01:00
Paolo Bonzini
414b15c909 exec: drop cpu_can_do_io, just read cpu->can_do_io
After commit 626cf8f (icount: set can_do_io outside TB execution,
2014-12-08), can_do_io is set to 1 if not executing code.  It is
no longer necessary to make this assumption in cpu_can_do_io.

It is also possible to remove the use_icount test, simply by
never setting cpu->can_do_io to 0 unless use_icount is true.

With these changes cpu_can_do_io boils down to a read of
cpu->can_do_io.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-08-14 23:40:32 +02:00
Peter Crosthwaite
37b9de463b disas: QOMify target specific setup
Add a QOM function hook for target-specific disassembly setup. This
allows removal of the #ifdeffery currently implementing target specific
disas setup from disas.c.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-07-09 15:20:41 +02:00
Peter Crosthwaite
2991b89047 cpu: Add wrapper for the set_pc() hook
Add a wrapper around the CPUClass::set_pc() hook.

Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-07-09 15:20:40 +02:00
Bharata B Rao
b7bca73334 cpu: Convert cpu_index into a bitmap
Currently CPUState::cpu_index is monotonically increasing and a newly
created CPU always gets the next higher index. The next available
index is calculated by counting the existing number of CPUs. This is
fine as long as we only add CPUs, but there are architectures which
are starting to support CPU removal, too. For an architecture like PowerPC
which derives its CPU identifier (device tree ID) from cpu_index, the
existing logic of generating cpu_index values causes problems.

With the currently proposed method of handling vCPU removal by parking
the vCPU fd in QEMU
(Ref: http://lists.gnu.org/archive/html/qemu-devel/2015-02/msg02604.html),
generating cpu_index this way will not work for PowerPC.

This patch changes the way cpu_index is handed out by maintaining
a bit map of the CPUs that tracks both addition and removal of CPUs.

The CPU bitmap allocation logic is part of cpu_exec_init(), which is
called by instance_init routines of various CPU targets. Newly added
cpu_exec_exit() API handles the deallocation part and this routine is
called from generic CPU instance_finalize.

Note: This new CPU enumeration is for !CONFIG_USER_ONLY only.
CONFIG_USER_ONLY continues to have the old enumeration logic.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
[AF: max_cpus -> MAX_CPUMASK_BITS]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-07-09 15:20:40 +02:00
Bharata B Rao
8487d12318 cpus: Add a macro to walk CPUs in reverse
Add CPU_FOREACH_REVERSE that walks CPUs in reverse.

Needed for PowerPC CPU device tree reorganization.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
2015-07-07 17:44:52 +02:00
Daniel P. Berrange
a3590dacce qom: Don't pass string table to object_get_enum() function
Now that properties can be explicitly registered as an enum
type, there is no need to pass the string table to the
object_get_enum() function. The object property registration
already has a pointer to the string table.

In changing this method signature, the hostmem backend object
has to be converted to use the new enum property registration
code, which simplifies it somewhat.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-06-19 18:42:48 +02:00
Daniel P. Berrange
a8e3fbedc8 qom: Add an object_property_add_enum() helper function
A QOM property can be parsed as enum using the visit_type_enum()
helper function, but this forces callers to use the more complex
generic object_property_add() method when registering it. It
also requires that users of that object have access to the
string map when they want to read the property value.

This patch introduces a specialized object_property_add_enum()
method which simplifies the use of enum properties, so the
setters/getters directly get passed the int value.

  typedef enum {
     MYDEV_TYPE_FROG,
     MYDEV_TYPE_ALLIGATOR,
     MYDEV_TYPE_PLATYPUS,

     MYDEV_TYPE_LAST
  } MyDevType;

Then provide a table of enum <-> string mappings

  static const char *const mydevtypemap[MYDEV_TYPE_LAST + 1] = {
     [MYDEV_TYPE_FROG] = "frog",
     [MYDEV_TYPE_ALLIGATOR] = "alligator",
     [MYDEV_TYPE_PLATYPUS] = "platypus",
     [MYDEV_TYPE_LAST] = NULL,
  };

Assuming an object struct of

   typedef struct {
      Object parent_obj;
      MyDevType devtype;
      ...other fields...
   } MyDev;

The property can then be registered as follows:

   static int mydev_prop_get_devtype(Object *obj,
                                     Error **errp G_GNUC_UNUSED)
   {
       MyDev *dev = MYDEV(obj);

       return dev->devtype;
   }

   static void mydev_prop_set_devtype(Object *obj,
                                      int value,
                                      Error **errp G_GNUC_UNUSED)
   {
       MyDev *dev = MYDEV(obj);

       dev->devtype = value;
   }

   object_property_add_enum(obj, "devtype",
                            mydevtypemap, "MyDevType",
                            mydev_prop_get_devtype,
                            mydev_prop_set_devtype,
                            NULL);

Note there is no need to check the range of 'value' in
the setter, because the string->enum conversion code will
have already done that and reported an error as required.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-06-19 18:42:18 +02:00
Daniel P. Berrange
2e4450ff43 qom: Make enum string tables const-correct
The enum string table parameters in various QOM/QAPI methods
are declared 'const char *strings[]'. This results in const
warnings if passed a variable that was declared as

   static const char * const strings[] = { .... };

Add the extra const annotation to the parameters, since
neither the string elements, nor the array itself should
ever be modified.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-06-19 18:42:18 +02:00
Daniel P. Berrange
a31bdae5a7 qom: Add object_new_with_props() / object_new_withpropv() helpers
It is reasonably common to want to create an object, set a
number of properties, register it in the hierarchy and then
mark it as complete (if a user creatable type). This requires
quite a lot of error prone, verbose, boilerplate code to achieve.

First a pair of functions object_set_props() / object_set_propv()
are added which allow for a list of objects to be set in
one single API call.

Then object_new_with_props() / object_new_with_propv() constructors
are added which simplify the sequence of calls to create an
object, populate properties, register in the object composition
tree and mark the object complete, into a single method call.

Usage would be:

   Error *err = NULL;
   Object *obj;
   obj = object_new_with_propv(TYPE_MEMORY_BACKEND_FILE,
                               object_get_objects_root(),
                               "hostmem0",
                               &err,
                               "share", "yes",
                               "mem-path", "/dev/shm/somefile",
                               "prealloc", "yes",
                               "size", "1048576",
                               NULL);

Note all property values are passed in string form and will
be parsed into their required data types, using normal QOM
semantics for parsing from string format.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-06-19 18:42:18 +02:00
Daniel P. Berrange
bc2256c4ae qom: Add helper function for getting user objects root
Add object_get_objects_root() function which is a convenience for
obtaining the Object * located at /objects in the object
composition tree. Convert existing code over to use the new
API where appropriate.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-06-19 18:40:00 +02:00
Paolo Bonzini
fb9e7e334b qom: add object_property_add_const_link
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-05 17:36:39 +02:00
Peter Maydell
66b9b43c42 exec.c: Capture the memory attributes for a watchpoint hit
Capture the memory attributes for the transaction which triggered
a watchpoint; this allows CPU specific code to implement features
like ARM's "user-mode only WPs also hit for LDRT/STRT accesses
made from privileged code". This change also correctly passes
through the memory attributes to the underlying device when
a watchpoint access doesn't hit.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2015-04-26 16:49:24 +01:00
Lin Ma
d6edb15576 qom: Add can_be_deleted callback to UserCreatableClass
If backends implement the can_be_deleted and it returns false,
Then the qmp_object_del won't delete the given backends.

Signed-off-by: Lin Ma <lma@suse.com>
Message-Id: <1427704589-7688-2-git-send-email-lma@suse.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-04-01 10:06:38 +02:00
Stefan Weil
e7ae771f6d Fix remaining warnings from Sparse (void return)
Sparse report:

hw/display/vga.c:2000:5: warning: returning void-valued expression
hw/intc/arm_gic.c:707:9: warning: returning void-valued expression
hw/intc/etraxfs_pic.c:138:9: warning: returning void-valued expression
hw/nvram/fw_cfg.c:475:5: warning: returning void-valued expression
hw/timer/a9gtimer.c:124:5: warning: returning void-valued expression
hw/tpm/tpm_tis.c:794:5: warning: returning void-valued expression
hw/usb/hcd-musb.c:558:9: warning: returning void-valued expression
hw/usb/hcd-musb.c:776:13: warning: returning void-valued expression
hw/usb/hcd-musb.c:867:5: warning: returning void-valued expression
hw/usb/hcd-musb.c:932:5: warning: returning void-valued expression
include/qom/cpu.h:584:5: warning: returning void-valued expression
monitor.c:4686:13: warning: returning void-valued expression
monitor.c:4690:13: warning: returning void-valued expression

Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Andreas Färber <afaerber@suse.de>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-03-19 11:11:55 +03:00
Peter Maydell
c08295d4bf cpu: Add missing documentation for some CPUClass methods
The CPUClass QOM methods virtio_is_big_endian, write_elf{32,64}_note
and write_elf{32,64}_qemunote were added without any description
being added to the doc comment. Correct this omission.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-03-10 17:07:27 +01:00
David Gibson
8e099d14f5 Generalize QOM publishing of date and time from mc146818rtc.c
The mc146818rtc driver exposes the current RTC date and time via the "date"
property in QOM (which is also aliased to the machine's "rtc-time"
property).  Currently it uses a custom visitor function rtc_get_date to
do this.

This patch introduces new helpers to the QOM core to expose struct tm
valued properties via a getter function, so that this functionality can be
more easily duplicated in other RTC implementations.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
2015-03-09 14:59:55 +01:00
Peter Maydell
5de090464f QOM infrastructure fixes and device conversions
* Assertion fix for device_add with non-device types
 * Documentation fix
 * qdev_init() error reporting cleanups
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Merge remote-tracking branch 'remotes/afaerber/tags/qom-devices-for-peter' into staging

QOM infrastructure fixes and device conversions

* Assertion fix for device_add with non-device types
* Documentation fix
* qdev_init() error reporting cleanups

# gpg: Signature made Tue Feb 24 13:56:33 2015 GMT using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg:                 aka "Andreas Färber <afaerber@suse.com>"

* remotes/afaerber/tags/qom-devices-for-peter:
  parallel: parallel_hds_isa_init() shouldn't fail
  parallel: Factor out common parallel_hds_isa_init()
  serial: serial_hds_isa_init() shouldn't fail
  serial: Factor out common serial_hds_isa_init()
  etsec: Replace qdev_init() by qdev_init_nofail()
  leon3: Replace unchecked qdev_init() by qdev_init_nofail()
  ide/isa: Replace unchecked qdev_init() by qdev_init_nofail()
  qdev: Improve qdev_init_nofail()'s error reporting
  qom: Fix typo, 'my_class_init' -> 'derived_class_init'
  qdev: Avoid type assertion in qdev_build_hotpluggable_device_list()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-03-02 13:20:43 +00:00
Paolo Bonzini
9d82b5a792 exec: make iotlb RCU-friendly
After the previous patch, TLBs will be flushed on every change to
the memory mapping.  This patch augments that with synchronization
of the MemoryRegionSections referred to in the iotlb array.

With this change, it is guaranteed that iotlb_to_region will access
the correct memory map, even once the TLB will be accessed outside
the BQL.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-16 17:30:19 +01:00
Zhoujian
f824e8ed03 qom: Fix typo, 'my_class_init' -> 'derived_class_init'
Signed-off-by: Zhoujian <jianjay.zhou@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-02-16 15:07:09 +01:00
Gonglei
8074264203 qom: Add description field in ObjectProperty struct
The descriptions can serve as documentation in the code,
and they can be used to provide better help.

Copy property descriptions when copying alias properties.

Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-10-15 05:03:15 +02:00
Peter Maydell
2472b6c07b gdbstub: Allow target CPUs to specify watchpoint STOP_BEFORE_ACCESS flag
GDB assumes that watchpoint set via the gdbstub remote protocol will
behave in the same way as hardware watchpoints for the target. In
particular, whether the CPU stops with the PC before or after the insn
which triggers the watchpoint is target dependent. Allow guest CPU
code to specify which behaviour to use. This fixes a bug where with
guest CPUs which stop before the accessing insn GDB would manually
step forward over what it thought was the insn and end up one insn
further forward than it should be.

We set this flag for the CPU architectures which set
gdbarch_have_nonsteppable_watchpoint in gdb 7.7:
ARM, CRIS, LM32, MIPS and Xtensa.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Tested-by: Michael Walle <michael@walle.cc> (for lm32)
Message-id: 1410545057-14014-1-git-send-email-peter.maydell@linaro.org
2014-10-06 14:25:43 +01:00
Richard Henderson
9585db68c7 qom: Add cpu_exec_interrupt hook
Continuing the removal of ifdefs from cpu_exec.

Cc: Andreas Färber <afaerber@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1410626734-3804-7-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-25 18:54:21 +01:00
Richard Henderson
cffe7b3249 qom: Add cpu_exec_enter and cpu_exec_exit hooks
In preparation for removing a bunch of ifdefs from cpu_exec.

Cc: Andreas Färber <afaerber@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1410626734-3804-2-git-send-email-rth@twiddle.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-25 18:54:21 +01:00
Peter Maydell
86025ee443 cpu-exec: Make debug_excp_handler a QOM CPU method
Make the debug_excp_handler target specific hook into a QOM
CPU method.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12 14:06:48 +01:00
Peter Maydell
08225676b2 exec.c: Record watchpoint fault address and direction
When we check whether we've hit a watchpoint we know the address
that we were attempting to access and whether it was a read or a
write. Record this information in the CPUWatchpoint struct so that
target-specific code can report it to the guest.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-09-12 14:06:48 +01:00
Peter Maydell
05068c0dfb exec.c: Relax restrictions on watchpoint length and alignment
The current implementation of watchpoints requires that they
have a power of 2 length which is not greater than TARGET_PAGE_SIZE
and that their address is a multiple of their length. Watchpoints
on ARM don't fit these restrictions, so change the implementation
so they can be relaxed.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-09-12 14:06:48 +01:00
Paolo Bonzini
64607d0881 qom: add a generic mechanism to resolve paths
It may be desirable to have custom link<> properties that do more
than just store an object.  Even the addition of a "check"
function is not enough if setting the link has side effects
or if a non-standard reference counting is preferrable.

Avoid the assumption that the opaque field of a link<> is a
LinkProperty struct, by adding a generic "resolve" callback
to ObjectProperty.  This fixes aliases of link properties.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-01 10:17:48 +02:00
Stefan Hajnoczi
ef7c7ff6d4 qom: add object_property_add_alias()
Sometimes an object needs to present a property which is actually on
another object, or it needs to provide an alias name for an existing
property.

Examples:
  a.foo -> b.foo
  a.old_name -> a.new_name

The new object_property_add_alias() API allows objects to alias a
property on the same object or another object.  The source and target
names can be different.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-07-01 09:15:02 +02:00
Greg Kurz
bf7663c4bd cpu: introduce CPUClass::virtio_is_big_endian()
If we want to support targets that can change endianness (modern PPC and
ARM for the moment), we need to add a per-CPU class method to be called
from the virtio code. The virtio_ prefix in the name is a hint for people
to avoid misusage (aka. anywhere but from the virtio code).

The default behaviour is to return the compile-time default target
endianness.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-29 19:39:42 +03:00
Hu Tao
1f21772db0 qom: introduce object_property_get_enum and object_property_get_uint16List
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-19 18:44:19 +03:00
Paolo Bonzini
93e22326d6 softmmu: make do_unaligned_access a method of CPU
We will reference it from more files in the next patch.  To avoid
ruining the small steps we're making towards multi-target, make
it a method of CPU rather than just a global.

Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05 16:10:31 +02:00
Andreas Färber
0d6d1ab499 cpu: Avoid QOM casts for CPU()
CPU address spaces touching load and store helpers as well as the
movement of (almost) all fields from CPU_COMMON to CPUState have led to
a noticeable increase of CPU() usage in "hot" paths for both TCG and KVM.

While CPU()'s OBJECT_CHECK() might help detect development errors, i.e.
in form of crashes due to QOM vs. non-QOM mismatches rather than QOM
type mismatches, it is not really needed at runtime since mostly used in
CPU-specific paths, coming from a target-specific CPU subtype. If that
pointer is damaged, other errors are highly likely to occur elsewhere
anyway.

Keep the CPU() macro for a consistent developer experience and for
flexibility to exchange its implementation, but turn it into a pure,
unchecked C cast for now.

Compare commit 6e42be7cd1.

Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-31 19:28:38 +02:00
Peter Maydell
d1a1451cd3 QOM CPUState refactorings / X86CPU
* CPUState layout optimization for TCG
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Merge remote-tracking branch 'remotes/afaerber/tags/qom-cpu-for-2.0' into staging

QOM CPUState refactorings / X86CPU

* CPUState layout optimization for TCG

# gpg: Signature made Wed 19 Mar 2014 21:51:46 GMT using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg:                 aka "Andreas Färber <afaerber@suse.com>"

* remotes/afaerber/tags/qom-cpu-for-2.0:
  cpu: Move tcg_exit_req to the end of CPUState

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-03-19 22:36:44 +00:00
Stefan Hajnoczi
39f72ef94b qom: Add check() argument to object_property_add_link()
There are currently three types of object_property_add_link() callers:

1. The link property may be set at any time.
2. The link property of a DeviceState instance may only be set before
   realize.
3. The link property may never be set, it is read-only.

Something similar can already be achieved with
object_property_add_str()'s set() argument.  Follow its example and add
a check() argument to object_property_add_link().

Also provide default check() functions for case #1 and #2.  Case #3 is
covered by passing a NULL function pointer.

Cc: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Anthony Liguori <aliguori@amazon.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
[AF: Tweaked documentation comment]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-19 22:23:13 +01:00
Richard Henderson
7e4fb26d75 cpu: Move tcg_exit_req to the end of CPUState
Reverse an increase in the size of generated code.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-19 22:11:19 +01:00
Stefan Hajnoczi
9561fda8d9 qom: Make QOM link property unref optional
Some object_property_add_link() callers expect property deletion to
unref the link property object.  Other callers expect to manage the
refcount themselves.  The former are currently broken and therefore leak
the link property object.

This patch adds a flags argument to object_property_add_link() so the
caller can specify which refcount behavior they require.  The new
OBJ_PROP_LINK_UNREF_ON_RELEASE flag causes the link pointer to be
unreferenced when the property is deleted.

This fixes refcount leaks in qdev.c, xilinx_axidma.c, xilinx_axienet.c,
s390-virtio-bus.c, virtio-pci.c, virtio-rng.c, and ui/console.c.

Rationale for refcount behavior:

 * hw/core/qdev.c
   - bus children are explicitly unreferenced, don't interfere
   - parent_bus is essentially a read-only property that doesn't hold a
     refcount, don't unref
   - hotplug_handler is leaked, do unref

 * hw/dma/xilinx_axidma.c
   - rx stream "dma" links are set using set_link, therefore they
     need unref
   - tx streams are set using set_link, therefore they need unref

 * hw/net/xilinx_axienet.c
   - same reasoning as hw/dma/xilinx_axidma.c

 * hw/pcmcia/pxa2xx.c
   - pxa2xx bypasses set_link and therefore does not use refcounts

 * hw/s390x/s390-virtio-bus.c
 * hw/virtio/virtio-pci.c
 * hw/virtio/virtio-rng.c
 * ui/console.c
   - set_link is used and there is no explicit unref, do unref

Cc: Peter Crosthwaite <peter.crosthwaite@petalogix.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Anthony Liguori <aliguori@amazon.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-19 22:05:20 +01:00
Andreas Färber
a47dddd734 exec: Change cpu_abort() argument to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:52:28 +01:00
Andreas Färber
b3310ab338 exec: Change cpu_breakpoint_{insert,remove{,_by_ref,_all}} argument
Use CPUState. Allows to clean up CPUArchState in gdbstub.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:48 +01:00
Andreas Färber
75a34036d4 exec: Change cpu_watchpoint_{insert,remove{,_by_ref,_all}} argument
Use CPUState. This lets us drop a few local env usages.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:48 +01:00
Andreas Färber
f0c3c505a8 cpu: Move breakpoints field from CPU_COMMON to CPUState
Most targets were using offsetof(CPUFooState, breakpoints) to determine
how much of CPUFooState to clear on reset. Use the next field after
CPU_COMMON instead, if any, or sizeof(CPUFooState) otherwise.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:47 +01:00
Andreas Färber
ff4700b05c cpu: Move watchpoint fields from CPU_COMMON to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:47 +01:00
Andreas Färber
0429a97195 cpu: Move opaque field from CPU_COMMON to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:47 +01:00
Andreas Färber
27103424c4 cpu: Move exception_index field from CPU_COMMON to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
6f03bef0ff cpu: Move jmp_env field from CPU_COMMON to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
8cd70437f3 cpu: Move tb_jmp_cache field from CPU_COMMON to CPUState
Clear it on reset.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
28ecfd7a62 cpu: Move icount_decr field from CPU_COMMON to CPUState
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
efee734004 cpu: Move icount_extra field from CPU_COMMON to CPUState
Reset it.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
99df7dce8a cpu: Move can_do_io field from CPU_COMMON to CPUState
Rename can_do_io() to cpu_can_do_io() and change argument to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
93afeade09 cpu: Move mem_io_{pc,vaddr} fields from CPU_COMMON to CPUState
Reset them.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
7510454e3e cpu: Turn cpu_handle_mmu_fault() into a CPUClass hook
Note that while such functions may exist both for *-user and softmmu,
only *-user uses the CPUState hook, while softmmu reuses the prototype
for calling it directly.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
9262685b81 cpu: Factor out cpu_generic_init()
All targets using it gain the ability to set -cpu name,key=value,...
options via the default TYPE_CPU CPUClass::parse_features() implementation.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:46 +01:00
Andreas Färber
94a444b295 cpu: Introduce CPUClass::parse_features() hook
Adapt the X86CPU implementation to suit the generic hook.
This involves a cleanup of error handling to cope with NULL errp.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:20:45 +01:00
Andreas Färber
8c2e1b0093 cpu: Turn cpu_has_work() into a CPUClass hook
Default to false.

Tidy variable naming and inline cast uses while at it.

Tested-by: Jia Liu <proljc@gmail.com> (or32)
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13 19:01:49 +01:00
Stefan Hajnoczi
11f590b1a2 object: add object_get_canonical_path_component()
It is often useful to find an object's child property name.  Also use
this new function to simplify the implementation of
object_get_canonical_path().

Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-03-13 14:23:27 +01:00
qiaonuohan
b5ba1cc626 dump: const-qualify the buf of WriteCoreDumpFunction
WriteCoreDumpFunction is a function pointer that points to the function used to
write content in "buf" into core file, so "buf" should be const-qualify.

Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-02-28 11:49:02 -05:00
Paolo Bonzini
0b7593e085 qapi: Add human mode to StringOutputVisitor
This will be used by "info qtree".  For numbers it prints both the
decimal and hex values.  For sizes it rounds to the nearest power
of 2^10.  For strings, it puts quotes around the string and separates
NULL and empty string.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-02-14 21:12:03 +01:00
Edgar E. Iglesias
09daed848c cpu: Add per-cpu address space
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
2014-02-11 22:56:37 +10:00
Igor Mammedov
269e09f3fc add optional 2nd stage initialization to -object/object-add commands
Introduces USER_CREATABLE interface that must be implemented by
objects which are designed to created with -object CLI option or
object-add QMP command.

Interface provides an ability to do an optional second stage
initialization of the object created with -object/object-add
commands. By providing complete() callback, which is called
after the object properties were set.

It allows to:
 * prevents misusing of -object/object-add by filtering out
   objects that are not designed for it.
 * generalize second stage backend initialization instead of
   adding custom APIs to perform it
 * early error detection of backend initialization at -object/
   object-add time rather than through a proxy DEVICE object
   that tries to use backend.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-01-28 12:47:02 -05:00
Paolo Bonzini
b061dc41f6 qom: Do not register interface "types" in the type table and fix names
There should be no need to look up nor enumerate the interface "types",
whose "classes" are really just vtables.  Just create the types and
add them to the interface list of the parent type.

Interfaces not registering their type anymore means that accessing
superclass::interface by type name will fail when initializing
subclass::interface.  Thus, we need to pre-initialize the subclass's
parent_type field before calling type_initialize.  Apart from this, the
interface "types" should never be used and thus it is harmless to leave
them out of the hashtable.

Further, the interface types had a bug with interfaces that are
inherited from a superclass:  The implementation type name was wrong
(for example it was subclass::superclass::interface rather than
just subclass::interface).  This patch fixes this as well.

Reported-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-12-24 17:27:17 +01:00
Peter Crosthwaite
0ab4c94c84 qom: Split out object and class caches
The object-cast and class-cast caches cannot be shared because class
caching is conditional on the target type not being an interface and
object caching is unconditional. Leads to a bug when a class cast
to an interface follows an object cast to the same interface type:

FooObject = FOO(obj);
FooClass = FOO_GET_CLASS(obj);

Where TYPE_FOO is an interface. The first (object) cast will be
successful and cache the casting result (i.e. TYPE_FOO will be cached).
The second (class) cast will then check the shared cast cache
and register a hit. The issue is, when a class cast hits in the cache
it just returns a pointer cast of the input class (i.e. the concrete
class).

When casting to an interface, the cast itself must return the
interface class, not the concrete class. The implementation of class
cast caching already ensures that the returned cast result is only
a pointer cast before caching. The object cast logic however does
not have this check.

Resolve by just splitting the object and class caches.

Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Nathan Rossi <nathan.rossi@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-12-24 17:27:17 +01:00
Michael S. Tsirkin
a25ebcacdd qom: Fix pointer to int property helpers' documentation
Relocate to alongside the other object_property_add_* helpers while at it.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-11-05 18:06:51 +01:00
Michael S. Tsirkin
e732ea6387 qom: add pointer to int property helpers
Make it easy to add read-only helpers for simple
integer properties in memory.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-10-14 17:46:00 +03:00
Michael S. Tsirkin
e82df24873 qom: cleanup struct Error references
now that a typedef for struct Error is available,
use it in qom/object.h to match coding style rules.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-10-14 17:45:16 +03:00
Igor Mammedov
008e05662a cleanup object.h: include error.h directly
qapi/error.h is simple enough to be included in qom/object.h
direcly and prepares qom/object.h to use Error typedef.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-10-14 17:11:45 +03:00
Anthony Liguori
aaa6a40194 QOM CPUState refactorings / X86CPU
* Conversion of global CPU list to QTAILQ - preparing for CPU hot-unplug
 * Document X86CPU magic numbers for CPUID cache info
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Merge remote-tracking branch 'afaerber/tags/qom-cpu-for-anthony' into staging

QOM CPUState refactorings / X86CPU

* Conversion of global CPU list to QTAILQ - preparing for CPU hot-unplug
* Document X86CPU magic numbers for CPUID cache info

# gpg: Signature made Tue 03 Sep 2013 10:59:22 AM CDT using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found

# By Andreas Färber (3) and Eduardo Habkost (1)
# Via Andreas Färber
* afaerber/tags/qom-cpu-for-anthony:
  target-i386: Use #defines instead of magic numbers for CPUID cache info
  cpu: Replace qemu_for_each_cpu()
  cpu: Use QTAILQ for CPU list
  a15mpcore: Use qemu_get_cpu() for generic timers
2013-09-03 12:33:32 -05:00
Andreas Färber
38fcbd3f08 cpu: Replace qemu_for_each_cpu()
It was introduced to loop over CPUs from target-independent code, but
since commit 182735efaf target-independent
CPUState is used.

A loop can be considered more efficient than function calls in a loop,
and CPU_FOREACH() hides implementation details just as well, so use that
instead.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-09-03 12:25:55 +02:00
Andreas Färber
bdc44640cb cpu: Use QTAILQ for CPU list
Introduce CPU_FOREACH(), CPU_FOREACH_SAFE() and CPU_NEXT() shorthand
macros.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-09-03 12:25:55 +02:00
Andreas Färber
5b9237f67c qom: Assert instance size in object_initialize_with_type()
This catches objects initializing beyond allocated memory, e.g.,
when subtypes get extended with instance state of their own.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-08-30 21:15:44 +02:00
Andreas Färber
213f0c4f61 qom: Pass available size to object_initialize()
To be passed on to object_initialize_with_type().

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> (virtio-ccw)
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-08-30 21:15:44 +02:00
Andreas Färber
53caad9a31 qom: Fix object_initialize_with_type() argument name in documentation
@obj -> @data.

Reviewed-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-08-30 20:14:38 +02:00
Peter Chubb
70392912ed object: Fix typo in qom/object.h
There's been a cut-and-paste error, it looks like, in the documentation
in qom/object.h.

Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-08-30 20:14:37 +02:00
Eduardo Habkost
8231c2dd22 qom: Introduce instance_post_init hook
This will allow classes to specify a function to be called after all
instance_init functions were called.

This will be used by DeviceState to call qdev_prop_set_globals() at the
right moment.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-08-16 18:44:33 +02:00
Andreas Färber
35143f0164 gdbstub: Fix gdb_register_coprocessor() register counting
Commit a0e372f0c4 reorganized the register
counting for GDB. While it seems correct not to let the total number of
registers skyrocket in an SMP scenario through a static variable, the
distinction between total register count and 'g' packet register count
(last_reg vs. num_g_regs) got lost among the way.

Fix this by introducing CPUState::gdb_num_g_regs and using that in
gdb_handle_packet().

Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: qemu-stable@nongnu.org (stable-1.6)
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-08-16 18:44:33 +02:00
Andreas Färber
5b24c64188 cpu: Introduce CPUClass::gdb_core_xml_file for GDB_CORE_XML
Replace the GDB_CORE_XML define in gdbstub.c with a CPUClass field.
Use first_cpu for qSupported and qXfer:features:read: for now.
Add a stub for xml_builtin.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-27 00:04:17 +02:00
Andreas Färber
5b50e790f9 cpu: Introduce CPUClass::gdb_{read,write}_register()
Completes migration of target-specific code to new target-*/gdbstub.c.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-27 00:04:17 +02:00
Andreas Färber
a0e372f0c4 cpu: Introduce CPUState::gdb_num_regs and CPUClass::gdb_num_core_regs
CPUState::gdb_num_regs replaces num_g_regs.
CPUClass::gdb_num_core_regs replaces NUM_CORE_REGS.

Allows building gdb_register_coprocessor() for xtensa, too.

As a side effect this should fix coprocessor register numbering for SMP.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-26 23:23:54 +02:00
Andreas Färber
eac8b355f0 cpu: Move gdb_regs field from CPU_COMMON to CPUState
Prepares for changing gdb_register_coprocessor() argument to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:33 +02:00
Andreas Färber
f3659eee05 cpu: Introduce CPUClass::memory_rw_debug() for target_memory_rw_debug()
Make inline target_memory_rw_debug() always available and change its
argument to CPUState. Let it check if CPUClass::memory_rw_debug provides
a specialized callback and fall back to cpu_memory_rw_debug() otherwise.

The only overriding implementation is for 32-bit sparc.

This prepares for changing GDBState::g_cpu to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:33 +02:00
Andreas Färber
00b941e581 cpu: Turn cpu_get_phys_page_debug() into a CPUClass hook
Change breakpoint_invalidate() argument to CPUState alongside.

Since all targets now assign a softmmu-only field, we can drop helpers
cpu_class_set_{do_unassigned_access,vmsd}() and device_class_set_vmsd().

Prepares for changing cpu_memory_rw_debug() argument to CPUState.

Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa)
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:33 +02:00
Andreas Färber
3825b28ff1 cpu: Change cpu_single_step() argument to CPUState
Use CPUState::env_ptr for now.

Needed for GdbState::c_cpu.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:32 +02:00
Andreas Färber
ed2803da58 cpu: Move singlestep_enabled field from CPU_COMMON to CPUState
Prepares for changing cpu_single_step() argument to CPUState.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:32 +02:00
Andreas Färber
bdf7ae5bbd cpu: Introduce CPUClass::synchronize_from_tb() for cpu_pc_from_tb()
Where no extra implementation is needed, fall back to CPUClass::set_pc().

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:32 +02:00
Andreas Färber
f45748f10e cpu: Introduce CPUClass::set_pc() for gdb_set_cpu_pc()
This moves setting the Program Counter from gdbstub into target code.
Use vaddr type as upper-bound replacement for target_ulong.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:31 +02:00
Andreas Färber
577f42c0e1 cpu: Introduce vaddr type
vaddr is to target_ulong what uintmax_t is to unsigned int.

Its purpose is to allow turning per-target functions with target_ulong
arguments into CPUClass hooks.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:31 +02:00
Chegu Vinod
3c02270db9 Introduce async_run_on_cpu()
Introduce an asynchronous version of run_on_cpu() i.e. the caller
doesn't have to block till the call back routine finishes execution
on the target vcpu.

Signed-off-by: Chegu Vinod <chegu_vinod@hp.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2013-07-12 19:36:01 +02:00
Andreas Färber
91b1df8cf9 cpu: Move reset logging to CPUState
x86 was using additional CPU_DUMP_* flags, so make that configurable in
CPUClass::reset_dump_flags.

This adds reset logging for alpha, unicore32 and xtensa.

Acked-by: Michael Walle <michael@walle.cc> (for lm32)
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:33:04 +02:00
Andreas Färber
182735efaf cpu: Make first_cpu and next_cpu CPUState
Move next_cpu from CPU_COMMON to CPUState.
Move first_cpu variable to qom/cpu.h.

gdbstub needs to use CPUState::env_ptr for now.
cpu_copy() no longer needs to save and restore cpu_next.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
[AF: Rebased, simplified cpu_copy()]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:32:54 +02:00
Andreas Färber
4917cf4432 cpu: Replace cpu_single_env with CPUState current_cpu
Move it to qom/cpu.h.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09 21:20:28 +02:00
Andreas Färber
c658b94f6e cpu: Turn cpu_unassigned_access() into a CPUState hook
Use it for all targets, but be careful not to pass invalid CPUState.
cpu_single_env can be NULL, e.g. on Xen.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28 13:25:13 +02:00
Andreas Färber
c643bed99f cpu: Change qemu_init_vcpu() argument to CPUState
This allows to move the call into CPUState's realizefn.
Therefore move the stub into libqemustub.a.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28 13:25:13 +02:00
Andreas Färber
878096eeb2 cpu: Turn cpu_dump_{state,statistics}() into CPUState hooks
Make cpustats monitor command available unconditionally.

Prepares for changing kvm_handle_internal_error() and kvm_cpu_exec()
arguments to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28 13:25:12 +02:00
Andreas Färber
60a3e17a46 cpu: Change cpu_exit() argument to CPUState
It no longer depends on CPUArchState, so move it to qom/cpu.c.

Prepares for changing GDBState::c_cpu to CPUState.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28 13:25:12 +02:00
Andreas Färber
1a1562f5ea cpu: Introduce VMSTATE_CPU() macro for CPUState
To be used to embed common CPU state into CPU subclasses.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28 13:25:11 +02:00
Andreas Färber
19e3835cff cpu: Introduce device_class_set_vmsd() helper
It's the equivalent to cpu_class_set_vmsd(), to assign
DeviceClass::vmsd. It wasn't needed before since only static,
unmigratable VMStateDescriptions were assigned so far.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28 13:25:11 +02:00
Andreas Färber
76d5f0294a cpu: Fix cpu_class_set_vmsd() documentation
It's CPUClass::vmsd, not CPUState::vmsd.

Reviewed-by: liguang <lig.fnst@cn.fujitsu.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28 13:25:11 +02:00
Andreas Färber
a23bbfda75 cpu: Turn cpu_get_memory_mapping() into a CPUState hook
Change error reporting from return value to Error argument.

Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
[AF: Fixed cpu_get_memory_mapping() documentation]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-11 18:03:35 +02:00
Andreas Färber
444d559078 cpu: Turn cpu_paging_enabled() into a CPUState hook
Relocate assignment of x86 get_arch_id to have all hooks in one place.

Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-11 17:50:09 +02:00
Anthony Liguori
035873283b qom: aggressively optimize qom casting
This patch adds a small typename cache to ObjectClass.  This allows
caching positive casts within each ObjectClass.  Benchmarking a
PPC workload provided by Aurelien, this patch eliminates every
single g_hash_table_lookup() happening during the benchmark (which
was about 2 million per-second).

With this patch applied, I get exactly the same performance (within
the margin of error) as with --disable-qom-cast-debug.

N.B. it's safe to cache typenames only from the _assert() macros
because they are always called with string literals.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13 15:27:18 -05:00
Paolo Bonzini
3556c233d9 qom: allow turning cast debugging off
Cast debugging can have a substantial cost (20% or more).  Instead of adding
special-cased "fast casts" in the hot paths, we can just disable it in
releases.  The tracing facilities we just added make it easier to analyze
those problems that cast debugging would reveal.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1368188203-3407-7-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13 09:52:06 -05:00
Paolo Bonzini
be17f18b8c qom: pass file/line/function to asserting casts
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1368188203-3407-5-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13 09:52:06 -05:00
Paolo Bonzini
33bc94eb20 qom: improve documentation of cast functions
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1368188203-3407-2-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-13 09:52:05 -05:00
Jens Freimann
c72bf46825 cpu: Move cpu_write_elfXX_note() functions to CPUState
Convert cpu_write_elfXX_note() functions to CPUClass methods and pass
CPUState as argument. Update target-i386 accordingly.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
[AF: Retain stubs as CPUClass' default method implementation; style changes]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01 13:04:19 +02:00
Igor Mammedov
69e5ff067a cpu: Add helper cpu_exists(), to check if CPU with specified id exists
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-01 13:04:18 +02:00