Commit Graph

372 Commits

Author SHA1 Message Date
Daniel P. Berrange
4d9310f427 oslib-win32: only provide localtime_r/gmtime_r if missing
The oslib-win32 file currently provides a localtime_r and
gmtime_r replacement unconditionally. Some versions of
Mingw-w64 would provide crude macros for localtime_r/gmtime_r
which QEMU takes care to disable. Latest versions of Mingw-w64
now provide actual functions for localtime_r/gmtime_r, but
with a twist that you have to include unistd.h or pthread.h
before including time.h.  By luck some files in QEMU have
such an include order, resulting in compile errors:

  CC    util/osdep.o
In file included from include/qemu-common.h:48:0,
                 from util/osdep.c:48:
include/sysemu/os-win32.h:77:12: error: redundant redeclaration of 'gmtime_r' [-Werror=redundant-decls]
 struct tm *gmtime_r(const time_t *timep, struct tm *result);
            ^
In file included from include/qemu-common.h:35:0,
                 from util/osdep.c:48:
/usr/i686-w64-mingw32/sys-root/mingw/include/time.h:272:107: note: previous definition of 'gmtime_r' was here
In file included from include/qemu-common.h:48:0,
                 from util/osdep.c:48:
include/sysemu/os-win32.h:79:12: error: redundant redeclaration of 'localtime_r' [-Werror=redundant-decls]
 struct tm *localtime_r(const time_t *timep, struct tm *result);
            ^
In file included from include/qemu-common.h:35:0,
                 from util/osdep.c:48:
/usr/i686-w64-mingw32/sys-root/mingw/include/time.h:269:107: note: previous definition of 'localtime_r' was here

This change adds a configure test to see if localtime_r
exits, and only enables the QEMU impl if missing. We also
re-arrange qemu-common.h try attempt to guarantee that all
source files get unistd.h before time.h and thus see the
localtime_r/gmtime_r defs.

[sw: Use "official" spellings for Mingw-w64, MinGW in comments.]
[sw: Terminate sentences with a dot in comments.]

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2015-09-24 21:13:49 +02:00
Paolo Bonzini
7c9b2bf677 qemu-thread: add a fast path to the Win32 QemuEvent
QemuEvents are used heavily by call_rcu.  We do not want them to be slow,
but the current implementation does a kernel call on every invocation
of qemu_event_* and won't cut it.

So, wrap a Win32 manual-reset event with a fast userspace path.  The
states and transitions are the same as for the futex and mutex/condvar
implementations, but the slow path is different of course.  The idea
is to reset the Win32 event lazily, as part of a test-reset-test-wait
sequence.  Such a sequence is, indeed, how QemuEvents are used by
RCU and other subsystems!

The patch includes a formal model of the algorithm.

Tested-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2015-09-24 20:52:28 +02:00
Eduardo Habkost
3b53e45f43 machine: Eliminate QEMUMachine and qemu_register_machine()
The struct is not used anymore and can be eliminated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-09-19 16:40:30 +02:00
Peter Maydell
1c9f03b81c * Linux header update and cleanup
* Support for HyperV crash report
 * Cleanup of target-specific HMP commands
 * Multiarch batch
 * Checkpatch fix for Perl 5.22
 * NBD fix
 * Revert incorrect commit 5243722376
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Linux header update and cleanup
* Support for HyperV crash report
* Cleanup of target-specific HMP commands
* Multiarch batch
* Checkpatch fix for Perl 5.22
* NBD fix
* Revert incorrect commit 5243722376

# gpg: Signature made Wed 16 Sep 2015 16:39:01 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: (24 commits)
  nbd: release exp->blk after all clients are closed
  checkpatch: Escape left braces in regex
  monitor: uninclude cpu_ldst
  include/exec: Move cputlb exec.c defs out
  cputlb: Change tlb_set_dirty() arg to cpu
  cputlb: move CPU_LOOP() for tlb_reset() to exec.c
  translate: move real_host_page setting to -common
  tcg: Move tci_tb_ptr to -common
  tcg: split tcg_op_defs to -common
  translate-all: Move tcg_handle_interrupt() to -common
  cpu-exec: Migrate some generic fns to cpu-exec-common
  qemu-char: Use g_new() & friends where that makes obvious sense
  monitor: added generation of documentation for hmp-commands-info.hx
  hmp-commands.hx: fix end of table info
  monitor: remove target-specific code from monitor.c
  hmp-commands-info: move info_cmds content out of monitor.c
  i386/kvm: Hyper-v crash msrs set/get'ers and migration
  kvm: Add kvm system event crash handler
  cpu: Add crash_occurred flag into CPUState
  target-i386: move asm-x86/hyperv.h to standard-headers
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-16 18:06:54 +01:00
Pavel Butsykin
bf95728400 monitor: remove target-specific code from monitor.c
Move target-specific code out of /monitor.c to /target-*/monitor.c,
this will avoid code cluttering and using random ifdeffery.  The solution
is quite simple, but solves the issue of the separation of target-specific
code from monitor.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1441899541-1856-3-git-send-email-den@openvz.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-16 17:33:32 +02:00
Richard Henderson
652a4b7e73 host-utils: Add revbit functions
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15 07:45:33 -07:00
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
Emilio G. Cota
492e1ca9bd rcu: fix comment with s/rcu_gp_lock/rcu_registry_lock/
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-10-git-send-email-cota@braap.org>
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
Fam Zheng
f3926945c8 iohandler: Use aio API
iohandler.c shares the same interface with aio, but with duplicated
code. It's better to rebase iohandler, also because that aio is a
more friendly interface to multi-threads.

Create a global AioContext instance and let its GSource handle the
iohandler events.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1441596538-4412-1-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-07 18:14:03 +02:00
Emilio G. Cota
d12f730948 seqlock: read sequence number atomically
With this change we make sure that the compiler will not
optimise the read of the sequence number in any way.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-8-git-send-email-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-07 18:12:39 +02:00
Emilio G. Cota
123fdbac9b seqlock: add missing 'inline' to seqlock_read_retry
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-7-git-send-email-cota@braap.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-07 18:12:31 +02:00
Peter Maydell
8f1ed5f508 Make pow2ceil() and pow2floor() inline
Since the pow2floor() function is now used in a hot code path,
make it inline; for consistency, provide pow2ceil() as an inline
function too.

Because these functions use ctz64() we have to put the inline
versions into host-utils.h, so they have access to ctz64(),
and move the inline is_power_of_2() along with them.

We then need to include host-utils.h from qemu-common.h so that
the files which use these functions via qemu-common.h still have
access to them.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1437741192-20955-7-git-send-email-peter.maydell@linaro.org
2015-09-07 14:19:01 +01:00
Peter Maydell
49caffe0cc qemu-common.h: Move muldiv64() to host-utils.h
Move the muldiv64() function from qemu-common.h to host-utils.h.
This puts it together with all the other arithmetic functions
where we provide a version with __int128_t and a fallback
without, and allows headers which need muldiv64() to avoid
including qemu-common.h.

We don't include host-utils from qemu-common.h, to avoid dragging
more things into qemu-common.h than it already has; in practice
everywhere that needs muldiv64() can get it via qemu/timer.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19 16:29:53 +01:00
Peter Maydell
03557b9aba osdep.h: Add header comment
Add a header comment to osdep.h, explaining what the header is for
and some rules to avoid circular-include difficulties.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19 16:29:53 +01:00
Peter Maydell
bfe7e449f1 osdep.h: Move some OS header includes and fixups from qemu-common.h
qemu-common.h has some system header includes and fixups for
things that might be missing. This is really an OS dependency
and belongs in osdep.h, so move it across.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19 16:29:53 +01:00
Peter Maydell
24134c4e91 compiler.h: Use glue() in QEMU_BUILD_BUG_ON define
Rather than rolling custom concatenate-strings macros for the
QEMU_BUILD_BUG_ON macro to use, use the glue() macro we already
have (since it's now available to us in this header).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19 16:29:53 +01:00
Peter Maydell
4912086865 osdep.h: Move some compiler-specific things to compiler.h
osdep.h has a few things which are really compiler specific;
move them to compiler.h, and include compiler.h from osdep.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19 16:29:53 +01:00
Peter Maydell
71baf787d8 osdep.h: Remove qemu_printf
qemu_printf is an ancient remnant which has been a simple #define to
printf for over a decade, and is used in only a few places. Expand
it out in those places and remove the #define.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2015-08-19 16:29:53 +01:00
Peter Maydell
8e0adf6414 -----BEGIN PGP SIGNATURE-----
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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Fri 14 Aug 2015 15:41:14 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request:
  throttle: add throttle_max_is_missing_limit() test
  throttle: refuse bps_max/iops_max without bps/iops

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-08-14 15:51:24 +01:00
Eduardo Habkost
8170dfa077 pc: Move PCMachineClass, PCMachineState to qemu/typedefs.h
They will be used inside hw/xen/xen.h, which doesn't include
hw/i386/pc.h.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-08-13 14:08:26 +03:00
Stefan Hajnoczi
ee2bdc33c9 throttle: refuse bps_max/iops_max without bps/iops
The bps_max/iops_max values are meaningless without corresponding
bps/iops values.  Reported an error if bps_max/iops_max is given without
bps/iops.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-id: 1438683733-21111-2-git-send-email-stefanha@redhat.com
2015-08-05 12:53:48 +01:00
Stefan Hajnoczi
13566fe3e5 timer: rename NSEC_PER_SEC due to Mac OS X header clash
Commit e0cf11f31c ("timer: Use a single
definition of NSEC_PER_SEC for the whole codebase") renamed
NANOSECONDS_PER_SECOND to NSEC_PER_SEC.

On Mac OS X there is a <dispatch/time.h> system header which also
defines NSEC_PER_SEC.  This causes compiler warnings.

Let's use the old name instead.  It's longer but it doesn't clash.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1436364609-7929-1-git-send-email-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-07-20 17:01:00 +01:00
Daniel P. Berrange
6f2945cde6 crypto: move built-in AES implementation into crypto/
To prepare for a generic internal cipher API, move the
built-in AES implementation into the crypto/ directory

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1435770638-25715-3-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-07 12:04:13 +02:00
Peter Maydell
7edd8e4660 * more of Peter Crosthwaite's multiarch preparation patches
* unlocked MMIO support in KVM
 * support for compilation with ICC
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* more of Peter Crosthwaite's multiarch preparation patches
* unlocked MMIO support in KVM
* support for compilation with ICC

# gpg: Signature made Mon Jul  6 13:59:20 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream:
  exec: skip MMIO regions correctly in cpu_physical_memory_write_rom_internal
  Stop including qemu-common.h in memory.h
  kvm: Switch to unlocked MMIO
  acpi: mark PMTIMER as unlocked
  kvm: Switch to unlocked PIO
  kvm: First step to push iothread lock out of inner run loop
  memory: let address_space_rw/ld*/st* run outside the BQL
  exec: pull qemu_flush_coalesced_mmio_buffer() into address_space_rw/ld*/st*
  memory: Add global-locking property to memory regions
  main-loop: introduce qemu_mutex_iothread_locked
  main-loop: use qemu_mutex_lock_iothread consistently
  Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES
  cpu-defs: Move out TB_JMP defines
  include/exec: Move tb hash functions out
  include/exec: Move standard exceptions to cpu-all.h
  cpu-defs: Move CPU_TEMP_BUF_NLONGS to tcg
  memory_mapping: Rework cpu related includes
  cutils: allow compilation with icc
  qemu-common: add VEC_OR macro

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-07-06 14:03:44 +01:00
Peter Maydell
fba0a593b2 Stop including qemu-common.h in memory.h
Including qemu-common.h from other header files is generally a bad
idea, because it means it's very easy to end up with a circular
dependency. For instance, if we wanted to include memory.h from
qom/cpu.h we'd end up with this loop:
 memory.h -> qemu-common.h -> cpu.h -> cpu-qom.h -> qom/cpu.h -> memory.h

Remove the include from memory.h. This requires us to fix up a few
other files which were inadvertently getting declarations indirectly
through memory.h.

The biggest change is splitting the fprintf_function typedef out
into its own header so other headers can get at it without having
to include qemu-common.h.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1435933104-15216-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-06 14:59:09 +02:00
Alberto Garcia
e0cf11f31c timer: Use a single definition of NSEC_PER_SEC for the whole codebase
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: c6e55468856ba0b8f95913c4da111cc0ef266541.1434113783.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-07-02 09:20:18 +01:00
Alberto Garcia
471fae3c98 timer: Move NANOSECONDS_PER_SECONDS to timer.h
We want to be able to reuse this define by making it common to
multiple QEMU modules.

This also makes it an integer since there's no need for it to be a
float.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-id: 6375912849da2ab561046dd013684535ccecca44.1434113783.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-07-02 09:20:18 +01:00
Paolo Bonzini
afbe70535f main-loop: introduce qemu_mutex_iothread_locked
This function will be used to avoid recursive locking of the iothread lock
whenever address_space_rw/ld*/st* are called with the BQL held, which is
almost always the case.

Tracking whether the iothread is owned is very cheap (just use a TLS
variable) but requires some care because now the lock must always be
taken with qemu_mutex_lock_iothread().  Previously this wasn't the case.
Outside TCG mode this is not a problem.  In TCG mode, we need to be
careful and avoid the "prod out of compiled code" step if already
in a VCPU thread.  This is easily done with a check on current_cpu,
i.e. qemu_in_vcpu_thread().

Hopefully, multithreaded TCG will get rid of the whole logic to kick
VCPUs whenever an I/O event occurs!

Cc: Frederic Konrad <fred.konrad@greensocs.com>
Message-Id: <1434646046-27150-3-git-send-email-pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-01 15:45:50 +02:00
Wen Congyang
6b64640dd2 iov: don't touch iov in iov_send_recv()
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-id: 555D39D2.4000705@cn.fujitsu.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-23 16:05:34 +01:00
Wen Congyang
c6a8c3283f util/hbitmap: Add an API to reset all set bits in hbitmap
The function bdrv_clear_dirty_bitmap() is updated to use
faster hbitmap_reset_all() call.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 555E868A.60506@cn.fujitsu.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-23 15:06:16 +01:00
Markus Armbruster
cc7a8ea740 Include qapi/qmp/qerror.h exactly where needed
In particular, don't include it into headers.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22 18:20:41 +02:00
Markus Armbruster
70b9433109 QemuOpts: Wean off qerror_report_err()
qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.

The only remaining user in qemu-option.c is qemu_opts_parse().  Is it
used in QMP context?  If not, we can simply replace
qerror_report_err() by error_report_err().

The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are
clearly not in QMP context.

The uses in vl.c aren't either, because the only QMP command handlers
there are qmp_query_status() and qmp_query_machines(), and they don't
call it.

Remaining uses:

* drive_def(): Command line -drive and such, HMP drive_add and pci_add

* hmp_chardev_add(): HMP chardev-add

* monitor_parse_command(): HMP core

* tmp_config_parse(): Command line -tpmdev

* net_host_device_add(): HMP host_net_add

* net_client_parse(): Command line -net and -netdev

* qemu_global_option(): Command line -global

* vnc_parse_func(): Command line -display, -vnc, default display, HMP
  change, QMP change.  Bummer.

* qemu_pci_hot_add_nic(): HMP pci_add

* usb_net_init(): Command line -usbdevice, HMP usb_add

Propagate errors through qemu_opts_parse().  Create a convenience
function qemu_opts_parse_noisily() that passes errors to
error_report_err().  Switch all non-QMP users outside tests to it.

That leaves vnc_parse_func().  Propagate errors through it.  Since I'm
touching it anyway, rename it to vnc_parse().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22 18:20:39 +02:00
Peter Crosthwaite
d49190c420 disas: Remove uses of CPU env
disas does not need to access the CPU env for any reason. Change the
APIs to accept CPU pointers instead. Small change pattern needs to be
applied to all target translate.c. This brings us closer to making
disas.o a common-obj and less architecture specific in general.

Cc: Richard Henderson <rth@twiddle.net>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Jia Liu <proljc@gmail.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-06-22 17:40:01 +02:00
Peter Maydell
0a3346f5de QOM infrastructure fixes and device conversions
* Changes to name string ownership for alias properties
 * Improvements around enum properties
 * Cleanups around -object handling
 * New helper functions
 * Cleanups of qdev init helper functions
 * Add path argument to qom-tree script
 * QTest cleanup to use new qtest_add_data_func() consistently
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Merge remote-tracking branch 'remotes/afaerber/tags/qom-devices-for-peter' into staging

QOM infrastructure fixes and device conversions

* Changes to name string ownership for alias properties
* Improvements around enum properties
* Cleanups around -object handling
* New helper functions
* Cleanups of qdev init helper functions
* Add path argument to qom-tree script
* QTest cleanup to use new qtest_add_data_func() consistently

# gpg: Signature made Fri Jun 19 18:14:38 2015 BST 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:
  qdev: Un-deprecate qdev_init_nofail()
  qdev: Deprecated qdev_init() is finally unused, drop
  qom: Don't pass string table to object_get_enum() function
  qom: Add an object_property_add_enum() helper function
  qom: Make enum string tables const-correct
  qom: Add object_new_with_props() / object_new_withpropv() helpers
  qom: Add helper function for getting user objects root
  vl: Create (most) objects before creating chardev backends
  doc: Document user creatable object types in help text
  backends: Fix typename of 'policy' enum property in hostmem obj
  scripts: Add support for path as argument of qom-tree
  tests: Use qtest_add_data_func() consistently
  qdev: Free property names after registering gpio aliases
  qom: strdup() target property name on object_property_add_alias()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-22 12:50:30 +01:00
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
Paul Donohue
fb1a3a051d qemu-timer: Call clock reset notifiers on forward jumps
Commit 691a0c9c introduced a mechanism by which QEMU_CLOCK_HOST can
notify other parts of the emulator when the host clock has jumped
backward.  This is used to avoid stalling timers that were scheduled
based on the host clock.

However, if the host clock jumps forward, then timers that were
scheduled based on the host clock may fire rapidly and cause other
problems.  For example, the mc146818rtc periodic timer will block
execution of the VM and consume host CPU while firing every interrupt
for the time period that was skipped by the host clock.

To correct that problem, this commit fires the reset notification if the
host clock jumps forward by more than a hard-coded limit.  The limit is
currently set to a value of 60 seconds, which should be small enough to
prevent excessive timer loops, but large enough to avoid frequent resets
in idle VMs.

Signed-off-by: Paul Donohue <qemu-git@PaulSD.com>
Message-Id: <20150612140845.GD2749@TopQuark.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-06-19 12:27:14 +02:00
Peter Maydell
f3e3b083d4 Block layer core and image format patches
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer core and image format patches

# gpg: Signature made Fri Jun 12 16:08:53 2015 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream: (25 commits)
  block: Fix reopen flag inheritance
  block: Add BlockDriverState.inherits_from
  block: Add list of children to BlockDriverState
  queue.h: Add QLIST_FIX_HEAD_PTR()
  block: Drain requests before swapping nodes in bdrv_swap()
  block: Move flag inheritance to bdrv_open_inherit()
  block: Use QemuOpts in bdrv_open_common()
  block: Use macro for cache option names
  vmdk: Use bdrv_open_image()
  quorum: Use bdrv_open_image()
  check-qdict: Test cases for new functions
  qdict: Add qdict_{set,copy}_default()
  qdict: Add qdict_array_entries()
  iotests: Add tests for overriding BDRV_O_PROTOCOL
  block: driver should override flags in bdrv_open()
  block: Change bitmap truncate conditional to assertion
  block: record new size in bdrv_dirty_bitmap_truncate
  raw-posix: Fix .bdrv_co_get_block_status() for unaligned image size
  vmdk: Use vmdk_find_index_in_cluster everywhere
  vmdk: Fix index_in_cluster calculation in vmdk_co_get_block_status
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-15 10:43:06 +01:00
Peter Maydell
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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Fri Jun 12 15:57:47 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request:
  qemu-iotests: expand test 093 to support group throttling
  throttle: Update throttle infrastructure copyright
  throttle: add the name of the ThrottleGroup to BlockDeviceInfo
  throttle: acquire the ThrottleGroup lock in bdrv_swap()
  throttle: Add throttle group support
  throttle: Add throttle group infrastructure tests
  throttle: Add throttle group infrastructure
  throttle: Extract timers from ThrottleState into a separate structure
  raw-posix: Fix .bdrv_co_get_block_status() for unaligned image size
  Revert "iothread: release iothread around aio_poll"

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-12 18:04:14 +01:00
Kevin Wolf
ae81693004 queue.h: Add QLIST_FIX_HEAD_PTR()
If the head of a list has been moved to a different memory location, the
le_prev link in the first list entry has to be fixed up. Provide a macro
that implements this fixup.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
2015-06-12 17:04:59 +02:00
Peter Maydell
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Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging

# gpg: Signature made Fri Jun 12 13:57:20 2015 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/net-pull-request:
  qmp/hmp: add rocker device support
  rocker: bring link up/down on PHY enable/disable
  rocker: update tests using hw-derived interface names
  rocker: Add support for phys name
  iohandler: Change return type of qemu_set_fd_handler to "void"
  event-notifier: Always return 0 for posix implementation
  xen_backend: Remove unused error handling of qemu_set_fd_handler
  oss: Remove unused error handling of qemu_set_fd_handler
  alsaaudio: Remove unused error handling of qemu_set_fd_handler
  main-loop: Drop qemu_set_fd_handler2
  Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler
  tap: Drop tap_can_send
  net/socket: Drop net_socket_can_send
  netmap: Drop netmap_can_send
  l2tpv3: Drop l2tpv3_can_send
  stubs: Add qemu_set_fd_handler

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-12 15:39:05 +01:00
Alberto Garcia
a291d5d9b9 throttle: Update throttle infrastructure copyright
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 07dcd4ed02f0110b13b3140f477b761b8bb8e270.1433779731.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12 14:00:00 +01:00
Benoît Canet
0e5b0a2d54 throttle: Extract timers from ThrottleState into a separate structure
Group throttling will share ThrottleState between multiple bs.
As a consequence the ThrottleState will be accessed by multiple aio
context.

Timers are tied to their aio context so they must go out of the
ThrottleState structure.

This commit paves the way for each bs of a common ThrottleState to
have its own timer.

Signed-off-by: Benoit Canet <benoit.canet@nodalink.com>
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 6cf9ea96d8b32ae2f8769cead38f68a6a0c8c909.1433779731.git.berto@igalia.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12 14:00:00 +01:00
Fam Zheng
f4d248bdc3 iohandler: Change return type of qemu_set_fd_handler to "void"
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1433400324-7358-14-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12 13:26:21 +01:00
Fam Zheng
6484e42247 main-loop: Drop qemu_set_fd_handler2
All users are converted to qemu_set_fd_handler now, drop
qemu_set_fd_handler2 and IOHandlerRecord.fd_read_poll.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1433400324-7358-9-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-06-12 13:26:21 +01:00
Dr. David Alan Gilbert
1a8f46f8d6 Move loadvm_handlers into MigrationIncomingState
In postcopy we need the loadvm_handlers to be used in a couple
of different instances of the loadvm loop/routine, and thus
it can't be local any more.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-06-12 06:54:01 +02:00
Dr. David Alan Gilbert
bca7856ae8 Create MigrationIncomingState
There are currently lots of pieces of incoming migration state scattered
around, and postcopy is adding more, and it seems better to try and keep
it together.

allocate MIS in process_incoming_migration_co

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-06-12 06:54:01 +02:00
Markus Armbruster
71df1d8337 QemuOpts: Convert qemu_opt_foreach() to Error
Retain the function value for now, to permit selective conversion of
its callers.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-09 07:40:23 +02:00
Markus Armbruster
1640b200d5 QemuOpts: Drop qemu_opt_foreach() parameter abort_on_failure
When the argument is non-zero, qemu_opt_foreach() stops on callback
returning non-zero, and returns that value.

When the argument is zero, it doesn't stop, and returns the callback's
value from the last iteration.

The two callers that pass zero could just as well pass one:

* qemu_spice_init()'s callback add_channel() either returns zero or
  exit()s.

* config_write_opts()'s callback config_write_opt() always returns
  zero.

Drop the parameter, and always stop.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-09 07:40:23 +02:00
Markus Armbruster
28d0de7a4f QemuOpts: Convert qemu_opts_foreach() to Error
Retain the function value for now, to permit selective conversion of
its callers.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
2015-06-09 07:37:37 +02:00