Merge remote-tracking branch 'bonzini/split-main-loop-for-anthony' into staging

Add stdio char device on windows

Simple implementation of an stdio char device on Windows.

Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: split CWP and PSTATE op helpers

Move CWP and PSTATE op helpers to win_helper.c.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: avoid AREG0 for lazy condition code helpers

Make lazy condition code helpers take a parameter for CPUState instead
of relying on global env.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: split lazy condition code handling op helpers

Move lazy condition code handling op helpers to cc_helper.c.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: avoid AREG0 for float and VIS ops

Make floating point and VIS ops take a parameter for CPUState instead
of relying on global env.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: split FPU and VIS op helpers

Move FPU op helpers to fop_helper.c. Move VIS op helpers to vis_helper.c,
compile it only for Sparc64.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: fix coding style

Before the next patches, fix coding style of the areas affected.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: avoid AREG0 for raise_exception and helper_debug

Make raise_exception() and helper_debug() take a parameter for
CPUState instead of relying on global env. Move the functions
to helper.c.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: move trivial functions from op_helper.c

These functions don't need access to CPUState or already pass it,
so relocating them from op_helper.c to helper.c and int64_helper.c
is trivial.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: split helper.c

Move CPU init to cpu_init.c and interrupt handling to int32_helper.c
for Sparc32 and int64_helper.c for Sparc64.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

Sparc: fix coding style

Before the next patch, fix coding style of the areas affected.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

m48t59: fix write access

Fix incorrect order of arguments, letting writes to NVRAM succeed.

It looks like guests never write to the device, only read from it, since the bug
originates back to 819385c58b319d9f80d676cefaed0610118f03ac.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

m48t59: drop obsolete address base arithmetic

Remove now incorrect address base arithmetic, missed by
9936d6e42392f1440505dfa9df065eabd251cadf. Fixes Sparc64 boot.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

pci_bridge: fix typo

Reviewed-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

simplify main loop functions

Provide a clean example of how to use the main loop in the tools.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Revert to a hand-made select loop

This reverts commit c82dc29a9112f34e0a51cad9a412cf6d9d05dfb2
and 4d88a2ac8643265108ef1fb47ceee5d7b28e19f2.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

main-loop: create main-loop.c

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

main-loop: create main-loop.h

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: do not use RunState change handlers

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: move more stuff out of qemu-timer.c

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: use atexit for quit_timers

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: do not refer to runstate_is_running()

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: move icount to cpus.c

None of this is needed by tools, and most of it can even be made static
inside cpus.c.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: more clock functions

These will be used when moving icount accounting to cpus.c.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: move common code to qemu_rearm_alarm_timer

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-timer: remove active_timers array

Embed the list in the QEMUClock instead.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

remove unused function

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

compatfd.c: Don't pass NULL pointer to SYS_signalfd

Don't pass a NULL pointer in to SYS_signalfd in qemu_signalfd_available():
this isn't valid and Valgrind complains about it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>

linux-user: Fix broken "-version" option

Fix the "-version" option, which was accidentally broken in commit
fc9c541:
 * exit after printing version information rather than proceeding
   blithely onward (and likely printing the full usage message)
 * correct the cut-n-paste error in the usage message for it
 * don't insist on the presence of a following argument for
   options which don't take an argument (this was preventing
   'qemu-arm -version' from working)
 * remove a spurious argc check from the beginning of main() which
   meant 'QEMU_VERSION=1 qemu-arm' didn't work.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>

hw/arm_gic.c: Fix save/load of irq_target array

irq_target array saving/loading is in the wrong loop.
Version bump.

Signed-off-by: Dmitry Koshelev <karaghiozis@gmail.com>
Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>

hw/omap2: Wire up the IRQ for the 2430's fifth GPIO module

The OMAP2430 version of the omap-gpio device has five GPIO modules,
not four like the other OMAP2 versions; wire up the fifth module's
IRQ line correctly.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>

hw/9pfs: Fix broken compilation caused by wrong trace events

Commit c572f23a3e7180dbeab5e86583e43ea2afed6271 added trace events
with mismatching format string and arguments.

gcc reports these errors:

In file included from trace.c:2:0:
trace.h: In function ‘trace_v9fs_attach’:
trace.h:2850:9: error: too many arguments for format [-Werror=format-extra-args]
trace.h: In function ‘trace_v9fs_wstat’:
trace.h:3039:9: error: too many arguments for format [-Werror=format-extra-args]
trace.h: In function ‘trace_v9fs_mkdir’:
trace.h:3088:9: error: too many arguments for format [-Werror=format-extra-args]
trace.h: In function ‘trace_v9fs_mkdir_return’:
trace.h:3095:9: error: too many arguments for format [-Werror=format-extra-args]

Fix the format strings and also use %u instead of %d for unsigned values
in the changed strings. There are more minor errors of this kind
which I did not fix because that would make the review more difficult.

v2: Fixed position of } for v9fs_mkdir_return.

Cc: Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Merge remote-tracking branch 'quintela/migration-pull' into staging

Merge remote-tracking branch 'qemu-kvm-tmp/memory/batch' into staging

Merge remote-tracking branch 'aneesh/for-upstream-6' into staging

Conflicts:
trace-events

migration: make migration-{tcp,unix} consistent

Files are almost identical in functionality, just remove the
differences that make no sense.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: propagate error correctly

unix and tcp outgoing migration have error values, but didn't returned
it.  Make them return the error.  Notice that EINPROGRESS & EWOULDBLOCK
are not considered errors as call will be retry later.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Don't use callback on file defining it

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Make state definitions local

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Export a function that tells if the migration has finished correctly

This will allow us to hide the state values.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Pass MigrationState in migration notifiers

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Use bandwidth_limit directly

Now that current_migration always exist, there is no reason for
max_throotle variable.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: create accessor for current_migration

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Move exported functions to the end of the file

This means we can remove the two forward declarations.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Remove migration cancel() callback

It is used only in one place

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Remove get_status() accessor

It is only used inside migration.c, and fields on that struct are
accessed all around the place on that file.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Our release callback was just free

We called it from a single place, and always with state !=
MIG_STATE_ACTIVE.  Just remove the whole callback.  For users of the
notifier, notice that this is exactly the case where they don't care,
we are just freeing the state from previous failed migration (it can't
be a sucessful one, otherwise we would not be running on that machine
in the first place).

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Introduce migrate_fd_completed() for consistency

This function is a bit different of the others that change the state,
in the sense that if migrate_fd_cleanup() returns an error, it set the
status to error, not completed.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: Refactor and simplify error checking in migrate_fd_put_ready

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Introduce MIG_STATE_SETUP

Use MIG_STATE_ACTIVE only when migration has really started.  Use this
new state to setup migration parameters.  Change defines for an
anonymous struct.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: move migrate_new to do_migrate

Once there, remove all parameters that don't need to be passed to
*start_outgoing_migration() functions

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Make all posible migration functions static

I have to move two functions postions to avoid forward declarations

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Refactor MigrationState creation

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Rename FdMigrationState MigrationState

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Fold MigrationState into FdMigrationState

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Use FdMigrationState instead of MigrationState when possible

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Make *start_outgoing_migration return FdMigrationState

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: make *save_live return errors

Make *save_live() return negative values when there is one error, and
updates all callers to check for the error.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: use qemu_file_get_error() return value when possible

Signed-off-by: Juan Quintela <quintela@redhat.com>

savevm: Rename has_error to last_error field

Now the field contains the last error name, so rename acordingly.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: rename qemu_file_has_error to qemu_file_get_error

Now the function returned errno, so it is better the new name.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: return real error code

make functions propagate errno, instead of just using -EIO.  Add a
comment about what are the return value of qemu_savevm_state_iterate().

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: change has_error to contain errno values

We normally already have an errno value.  When not, abuse EIO.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: set error if select return one error

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: don't "write" when migration is not active

If migration is not active, just ignore writes.

Signed-off-by: Juan Quintela <quintela@redhat.com>

buffered_file: reuse QEMUFile has_error field

Instead of having two has_error fields in QEMUFile & QEMUBufferedFile,
reuse the 1st one.  Notice that the one in buffered_file is only set
after a file operation.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

buffered_file: Use right "opaque"

buffered_close 's' variable is of type QEMUFileBuffered, and
wait_for_unfreeze() expect to receive a MigrationState, that
'coincidentaly' is s->opaque.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: If there is one error, it makes no sense to continue

Once there, add a comment about what each error mean.

Signed-off-by: Juan Quintela <quintela@redhat.com>

migration: add error handling to migrate_fd_put_notify().

Although migrate_fd_put_buffer() sets MIG_STATE_ERROR if it failed,
since migrate_fd_put_notify() isn't checking error of underlying
QEMUFile, those resources are kept open.  This patch checks it and
calls migrate_fd_error() in case of error.

Signed-off-by: Yoshiaki Tamura <tamura.yoshiaki@lab.ntt.co.jp>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: Check that migration is active before cancel it

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

migration: simplify state assignmente

Once there, make sure that if we already know that there is one error,
just call migration_fd_cleanup() with the ERROR state.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

ds1225y: Use stdio instead of QEMUFile

QEMUFile * is only intended for migration nowadays.  Using it for
anything else just adds pain and a layer of buffers for no good
reason.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

Revert "savevm: fix corruption in vmstate_subsection_load()."

This reverts commit eb60260de0b050a5e8ab725e84d377d0b44c43ae.

Conflicts:

savevm.c

We changed qemu_peek_byte() prototype, just fixed the rejects.

Signed-off-by: Juan Quintela<quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

savevm: improve subsections detection on load

We add qemu_peek_buffer, that is identical to qemu_get_buffer, just
that it don't update f->buf_index.

We add a paramenter to qemu_peek_byte() to be able to peek more than
one byte.

Once this is done, to see if we have a subsection we look:
- 1st byte is QEMU_VM_SUBSECTION
- 2nd byte is a length, and is bigger than section name
- 3rd element is a string that starts with section_name

So, we shouldn't have false positives (yes, content could still get us
wrong but probabilities are really low).

v2:
- Alex Williamsom found that we could get negative values on index.
- Rework code to fix that part.
- Rewrite qemu_get_buffer() using qemu_peek_buffer()

v3:
- return "done" on error case

v4:
- fix qemu_file_skip() off by one.

Signed-off-by: Juan Quintela <quintela@redhat.com>

savevm: define qemu_get_byte() using qemu_peek_byte()

Signed-off-by: Juan Quintela<quintela@redhat.com>

savevm: some coding style cleanups

This patch will make moving code on next patches and having checkpatch
happy easier.

Signed-off-by: Juan Quintela<quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

savevm: teach qemu_fill_buffer to do partial refills

We will need on next patch to be able to lookahead on next patch

v2: rename "used" to "pending" (Alex Williams)

Signed-off-by: Juan Quintela<quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

runstate: Allow user to migrate twice

It should be a matter of allowing the transition POSTMIGRATE ->
FINISH_MIGRATE, but it turns out that the VM won't do the
transition the second time because it's already stopped.

So this commit also adds vm_stop_force_state() which performs
the transition even if the VM is already stopped.

While there also allow other states to migrate.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

savevm: qemu_savevm_state(): Drop stop VM logic

qemu_savevm_state() has some logic to stop the VM and to (or not to)
resume it. But this seems to be a big noop, as qemu_savevm_state()
is only called by do_savevm() when the VM is already stopped.

So, let's drop qemu_savevm_state()'s stop VM logic.

Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

runstate: Allow to transition from paused to postmigrate

The user may already have paused the VM before starting the
migration process. If s/he does that, then the state will be
'paused' when we finish the migration process. In that case
we want to transition from 'paused' to 'postmigrate' as the
latter is now the real reason why the VM is stopped.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

runstate: Print state transition when invalid

Makes it easier to debug.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

QMP: Fix blockdev-snapshot-sync doc example

Fix wrong command name.

Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

tcx: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

tc63963xb: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

syborg: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

sun4u: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

sun4m: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

strongarm: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

spitz: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

spapr: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

sm501: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

s390-virtio: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

realview: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

r2d: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

ppcr500_mpc8544ds: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>

pci: simplify memory region registration

The two code paths (for ADDRESS_SPACE_IO and ADDRESS_SPACE_MEM) are
identical.  Unify them.

Signed-off-by: Avi Kivity <avi@redhat.com>

pxa2xx: convert to memory API (part II)

Signed-off-by: Avi Kivity <avi@redhat.com>

pxa2xx: convert to memory API (part I)

Signed-off-by: Avi Kivity <avi@redhat.com>

ppc_prep: convert to memory API

Signed-off-by: Avi Kivity <avi@redhat.com>