Implement named GPIOs on the Device layer. Listifies the existing GPIOs
stuff using string keys. Legacy un-named GPIOs are preserved by using
a NULL name string - they are just a single matchable element in the
name list.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Make machine's QemuOpts QOM properties of /machine. The properties
are automatically filled in. This opens the possibility to create
opts per machine rather than global.
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Checks the output visitor behaviour for NULL values.
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
A NULL value is not added to visitor's stack, but there
is no check for that when the visitor tries to return
that value, leading to QEMU crash.
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Filter out also 'type' property when setting
object's properties.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Total removal of QEMUMachineInitArgs struct. QEMUMachineInitArgs's fields
are copied into MachineState. Removed duplicated fields from MachineState.
All the other changes are only mechanical refactoring, no semantic changes.
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> (s390)
Reviewed-by: Michael S. Tsirkin <mst@redhat.com> (PC)
[AF: Renamed ms -> machine, use MACHINE_GET_CLASS()]
Signed-off-by: Andreas Färber <afaerber@suse.de>
But don't test their properties, otherwise we will recurse forever.
Their properties are already tested when we encounter them as child<>
properties elsewhere in the hierarchy, like /machine/unattached/...
This would have caught the crash fixed by 92b3eead.
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJThdcTAAoJEJykq7OBq3PIH4UH/iKRrso84PjPirsYfQsga+2i
Nx3FG2AnmCU5jYn0XjXBlq+K56BpAxuimhscPdtCpP2FeBEeFb53XfxyfUH8ybVs
dACgd4MulFC9UUX06CnaSh011nG7tGELHrnAVOSqMKVSOc+GDv9yQhtN8r8bfqKx
kt0ZWsZZ6iawbXgnd0L1mS22XANrGy1DlSWzUPL6WgS7ksJ0gg6EalEWfU4YXv+u
k2xjVfEcHhmvlS+eS1xnI0RrJ9LAWmi0nS5BV7yRiy8+U+V30iADDKObWNIom+jm
SYH4oT+asIYucl9CpXCa+5AA0tTt52oeBM28TYgJwQx8hEVLN6Td+N4q7RewKsM=
=kKnv
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Block pull request
# gpg: Signature made Wed 28 May 2014 13:31:15 BST using RSA key ID 81AB73C8
# gpg: Can't check signature: public key not found
* remotes/stefanha/tags/block-pull-request: (33 commits)
block/sheepdog: Don't use qerror_report()
block/sheepdog: Fix silent sd_open(), sd_create() failures
block/sheepdog: Propagate errors to open and create methods
block/sheepdog: Propagate errors through find_vdi_name()
block/sheepdog: Propagate errors through do_sd_create()
block/sheepdog: Propagate errors through sd_prealloc()
block/sheepdog: Propagate errors through get_sheep_fd()
block/sheepdog: Propagate errors through connect_to_sdog()
block/vvfat: Propagate errors through init_directories()
block/vvfat: Propagate errors through enable_write_target()
block/ssh: Propagate errors to open and create methods
block/ssh: Propagate errors through connect_to_ssh()
block/ssh: Propagate errors through authenticate()
block/ssh: Propagate errors through check_host_key()
block/ssh: Drop superfluous libssh2_session_last_errno() calls
block/rbd: Propagate errors to open and create methods
qemu-nbd: Don't use qerror_report()
blockdev: Don't use qerror_report() in do_drive_del()
blockdev: Don't use qerror_report_err() in drive_init()
docs: Define refcount_bits value
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* Preliminary restructuring for EL2/EL3 support
* improve CPACR handling
* fix pxa2xx_lcd palette formats
* update highbank/midway maintainer
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=oYff
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20140527' into staging
target-arm:
* Preliminary restructuring for EL2/EL3 support
* improve CPACR handling
* fix pxa2xx_lcd palette formats
* update highbank/midway maintainer
# gpg: Signature made Tue 27 May 2014 17:26:27 BST using RSA key ID 14360CDE
# gpg: Can't check signature: public key not found
* remotes/pmaydell/tags/pull-target-arm-20140527: (26 commits)
target-arm: A64: Register VBAR_EL3
target-arm: A64: Register VBAR_EL2
target-arm: Make vbar_write writeback to any CPREG
target-arm: A64: Generalize update_spsel for the various ELs
target-arm: A64: Generalize ERET to various ELs
target-arm: A64: Trap ERET from EL0 at translation time
target-arm: A64: Forbid ERET to higher or unimplemented ELs
target-arm: Register EL3 versions of ELR and SPSR
target-arm: Register EL2 versions of ELR and SPSR
target-arm: Add a feature flag for EL3
target-arm: Add a feature flag for EL2
target-arm: A64: Introduce aarch64_banked_spsr_index()
target-arm: Add SPSR entries for EL2/HYP and EL3/MON
target-arm: A64: Add ELR entries for EL2 and 3
target-arm: A64: Add SP entries for EL2 and 3
target-arm: c12_vbar -> vbar_el[]
target-arm: Make esr_el1 an array
target-arm: Make elr_el1 an array
target-arm: Use a 1:1 mapping between EL and MMU index
target-arm: A32: Use get_mem_index for load/stores
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- fix cross-page jumps/calls at the end of TB;
- add tests for TBs and instructions crossing page boundary.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=4dqX
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/xtensa/tags/20140526-xtensa' into staging
Xtensa fixes queue 2014-05-26:
- fix cross-page jumps/calls at the end of TB;
- add tests for TBs and instructions crossing page boundary.
# gpg: Signature made Mon 26 May 2014 09:37:39 BST using RSA key ID F83FA044
# gpg: Can't check signature: public key not found
* remotes/xtensa/tags/20140526-xtensa:
target-xtensa: add tests for cross-page TB
target-xtensa: completely clean TLB between MMU tests
target-xtensa: fix cross-page jumps/calls at the end of TB
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
usb: xhci and mtp bugfixes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=y+dq
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-7' into staging
usb: usb3 streams support for usb-host and usb-redir
usb: xhci and mtp bugfixes.
# gpg: Signature made Mon 26 May 2014 09:44:09 BST using RSA key ID D3E87138
# gpg: Can't check signature: public key not found
* remotes/kraxel/tags/pull-usb-7:
usb-host-libusb: Set stream id when submitting bulk-stream transfers
usb-host-libusb: Add alloc / free streams ops
usb-host-libusb: Fill in endpoint max_streams when available
usb-redir: Add support for bulk streams
usb-mtp: handle usb_mtp_get_object failure
usb-mtp: handle lseek failure
usb-mtp: use bool to track MTPObject init status
xhci: add xhci_get_flag
xhci: add endpoint cap on express bus only
xhci: child detach fix
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
qerror_report() is a transitional interface to help with converting
existing HMP commands to QMP. It should not be used elsewhere.
Replace by error_report().
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Open and create methods must set an error when they fail.
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Completes the conversion to Error started in commit 015a103^..d5124c0,
except for a few bugs fixed in the next commit.
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Completes the conversion of the open method to Error started in commit
015a103.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Continues the conversion of the open method to Error started in commit
015a103.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Completes the conversion to Error started in commit 015a103^..d5124c0.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
libssh2_session_last_error() already returns the error code.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Completes the conversion to Error started in commit 015a103^..d5124c0.
Cc: Josh Durgin <josh.durgin@inktank.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
qerror_report() is a transitional interface to help with converting
existing HMP commands to QMP. It should not be used elsewhere.
Replace by error_report().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
qerror_report() is a transitional interface to help with converting
existing HMP commands to QMP. It should not be used elsewhere.
do_drive_del() is an HMP command that won't be converted to QMP (we'll
create a new QMP command instead). It uses both qerror_report() and
error_report(). Convert the former to the latter.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
qerror_report_err() is a transitional interface to help with
converting existing HMP commands to QMP. It should not be used
elsewhere.
drive_init() is not meant to be used by QMP commands. It uses both
qerror_report_err() and error_report(). Convert the former to the
latter.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The 'refcount_bits' term used in the description of refcount block entry is
not defined in the specification. The definition is added in the
'refcount_order' section where refcount_bits was used as 'width in bits'.
Signed-off-by: Maria Kustova <maria.k@catit.be>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The above bdrv_set_backing_hd already does this.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This makes use of op_blocker and blocks all the operations except for
commit target, on each BlockDriverState->backing_hd.
The asserts for op_blocker in bdrv_swap are removed because with this
change, the target of block commit has at least the backing blocker of
its child, so the assertion is not true. Callers should do their check.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We need to handle the coming backing_blocker properly, so don't open
code the assignment, instead, call bdrv_set_backing_hd to change
backing_hd.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This is the common but non-trivial steps to assign or change the
backing_hd of BDS.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
It makes no sense to check for "any" blocker on bs, we are here only
because of the mechanical conversion from in_use to op_blockers. Remove
it now, and let the callers check specific operation types. Backup and
mirror already have it, add checker to stream and commit.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This drops BlockDriverState.in_use with op_blockers:
- Call bdrv_op_block_all in place of bdrv_set_in_use(bs, 1).
- Call bdrv_op_unblock_all in place of bdrv_set_in_use(bs, 0).
- Check bdrv_op_is_blocked() in place of bdrv_in_use(bs).
The specific types are used, e.g. in place of starting block backup,
bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP, ...).
There is one exception in block_job_create, where
bdrv_op_blocker_is_empty() is used, because we don't know the operation
type here. This doesn't matter because in a few commits away we will drop
the check and move it to callers that _do_ know the type.
- Check bdrv_op_blocker_is_empty() in place of assert(!bs->in_use).
Note: there is only bdrv_op_block_all and bdrv_op_unblock_all callers at
this moment. So although the checks are specific to op types, this
changes can still be seen as identical logic with previously with
in_use. The difference is error message are improved because of blocker
error info.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
BlockDriverState.op_blockers is an array of lists with BLOCK_OP_TYPE_MAX
elements. Each list is a list of blockers of an operation type
(BlockOpType), that marks this BDS as currently blocked for a certain
type of operation with reason errors stored in the list. The rule of
usage is:
* BDS user who wants to take an operation should check if there's any
blocker of the type with bdrv_op_is_blocked().
* BDS user who wants to block certain types of operation, should call
bdrv_op_block (or bdrv_op_block_all to block all types of operations,
which is similar to the existing bdrv_set_in_use()).
* A blocker is only referenced by op_blockers, so the lifecycle is
managed by caller, and shouldn't be lost until unblock, so typically
a caller does these:
- Allocate a blocker with error_setg or similar, call bdrv_op_block()
to block some operations.
- Hold the blocker, do his job.
- Unblock operations that it blocked, with the same reason pointer
passed to bdrv_op_unblock().
- Release the blocker with error_free().
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This adds the enum of all the operations that can be taken on a block
device.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Currently, test 089 uses $QEMU_IMG info manually in order to obtain the
according output. However, the iotests should generally use _img_info as
this filters out more irrelevant information such as the host image size
or format specific information. Therefore, test 089 should use _img_info
as well.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The current flow of canceling a thread from THREAD_ACTIVE state is:
1) Caller wants to cancel a request, so it calls thread_pool_cancel.
2) thread_pool_cancel waits on the conditional variable
elem->check_cancel.
3) The worker thread changes state to THREAD_DONE once the task is
done, and notifies elem->check_cancel to allow thread_pool_cancel
to continue execution, and signals the notifier (pool->notifier) to
allow callback function to be called later. But because of the
global mutex, the notifier won't get processed until step 4) and 5)
are done.
4) thread_pool_cancel continues, leaving the notifier signaled, it
just returns to caller.
5) Caller thinks the request is already canceled successfully, so it
releases any related data, such as freeing elem->common.opaque.
6) In the next main loop iteration, the notifier handler,
event_notifier_ready, is called. It finds the canceled thread in
THREAD_DONE state, so calls elem->common.cb, with an (likely)
dangling opaque pointer. This is a use-after-free.
Fix it by calling event_notifier_ready before leaving
thread_pool_cancel.
Test case update: This change will let cancel complete earlier than
test-thread-pool.c expects, so update the code to check this case: if
it's already done, done_cb sets .aiocb to NULL, skip calling
bdrv_aio_cancel on them.
Reported-by: Ulrich Obergfell <uobergfe@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This triggers if bs->drv becomes NULL in a concurrent request. This is
currently only the case when corruption prevention kicks in (i.e. at
most once per image, and after that it produces I/O errors).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Cover basic aspects and API usage for QemuOpt. The current implementation
covers the API's planned to be changed by Chunyan Liu in his QEMUOptionParameter
replacement/cleanup job.
Other APIs should be covered in future improvements.
[Squashing in a small fix "QemuOpt: use qemu_find_opts_err() to avoid
output on stderr in tests".
qemu_find_opts() calls error_report() instead of propagating the Error
object. It is undesirable to clutter test case output with error
messages from a passing test.
Use qemu_find_opts_err() to avoid the output on stderr.
--Stefan]
Signed-off-by: Leandro Dorileo <l@dorileo.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We should allow testing this on tmpfs. Any cache setting in iotests
should try to obey $CACHEMODE.
The cache mode is still "none" by default but overridable
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAABAgAGBQJTgup0AAoJEL7lnXSkw9fb2z0IAJVnjV1b2xGqWrbBFPvm1zdT
8vSKdW77kvtL1Usx2xLLqjn+xfJsmDwiIfEZvAEsma2s8ubVkz9hiQylq9jdSxGi
YR0i8xUeqeF6n2RttzEw9rENHa9qZllxGpBQyIcjxo+7hcgVkj0r15x+JAIkeIpV
6iCx1mqAC5QJbHrIN1eO5ymDZvsq37Q8S9jRU0hJ18MwFfKc1z9T38D+VytnW9xK
l5Qg3JEf9HBI9zTChfRDImTDXNV2Ehm0nK5/8noD0mjp06p/DF/HN+BDsXM/0cPc
aWmoVNa0KGCqXvmI+F/7RWBzxaOkH9UXDrf1ed10Io6Nsp0nGfxWJHEA9to/fyo=
=86oR
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/mjt/tags/trivial-patches-2014-05-26' into staging
trivial patches for 2014-05-26
# gpg: Signature made Mon 26 May 2014 08:17:08 BST using RSA key ID A4C3D7DB
# gpg: Can't check signature: public key not found
* remotes/mjt/tags/trivial-patches-2014-05-26: (23 commits)
libcacard: remove useless initializers
net: cadence_gem: Fix top comment
bsd-user: replace fprintf(stderr, ...) with error_report()
audio: replace fprintf(stderr, ...) with error_report() in audio
libcacard: fix wrong array expansion logic
libcacard/vcard_emul_nss: Drop a redundant conditional
libcacard: Convert two leftover realloc() to GLib
libcacard/vreader: Tighten assertion to clarify intent
libcacard/vreader: Drop broken recovery from failed assertion
libcacard: Plug memory leaks around vreader_get_reader_list()
libcacard/vscclient: Bury some dead code
vl: fix 'name' option to work with -readconfig
configure: Put tempfiles in a subdir of the build directory
dma-helpers: avoid calling dma_bdrv_unmap() twice
arch_init: replace fprintf(stderr, ...) with error_report()
pci: move dereferencing of root only after verifying valid root pointer
jazz_led: Add missing break in switch case
bswap.h: Rename ldl_p, stl_p, etc to ldl_he_p, stl_he_p, etc
configure: Automatically select GTK+ 3.0 if GTK+ 2.0 is unavailable
nbd: Miscellaneous typo fixes.
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* remotes/mwalle/tags/lm32-semihosting/20140524:
lm32: remove lm32_sys
test: lm32: use semihosting for testing
target-lm32: add semihosting support
test: lm32: make test cases independent
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* remotes/rth/tcg-mips: (24 commits)
tcg-mips: Enable direct chaining of TBs
tcg-mips: Simplify movcond
tcg-mips: Simplify brcond2
tcg-mips: Improve setcond eq/ne vs zeros
tcg-mips: Simplify setcond2
tcg-mips: Simplify brcond
tcg-mips: Simplify setcond
tcg-mips: Commonize opcode implementations
tcg-mips: Improve add2/sub2
tcg-mips: Hoist args loads
tcg-mips: Fix subtract immediate range
tcg-mips: Name the opcode enumeration
tcg-mips: Use EXT for AND on mips32r2
tcg-mips: Use T9 for TCG_TMP1
tcg-mips: Introduce TCG_TMP0, TCG_TMP1
tcg-mips: Rearrange register allocation
tcg-mips: Convert to new_ldst
tcg-mips: Convert to new qemu_l/st helpers
tcg-mips: Move softmmu slow path out of line
tcg-mips: Split large ldst offsets
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
