trace: [configure] rename CONFIG_*_TRACE into CONFIG_TRACE_*

Provides a more hierarchical view of the variable domain.

Also adds the CONFIG_TRACE_* variables for all backends.

[Stefan added missing 'test' in stap if statement]

Signed-off-by: Lluís Vilanova <[email protected]>
Signed-off-by: Stefan Hajnoczi <[email protected]>

build: [simple] Include qemu-timer-common.o in trace-obj-y

Helper programs like qemu-ga use tracing primitives, but qemu-timer-common.o
(also used by simpletrace.o) is not necessarily included in the linkage line.

Signed-off-by: Lluís Vilanova <[email protected]>

build: Fix linkage of QEMU_PROG

Using '$^' to establish the files to link with will remove any repeated entries
in the list of dependencies.

Signed-off-by: Lluís Vilanova <[email protected]>

tusb6010: Convert to qdev

Convert the tusb6010 to qdev.

Signed-off-by: Juha Riihimäki <[email protected]>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <[email protected]>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: Peter Maydell <[email protected]>
Signed-off-by: Edgar E. Iglesias <[email protected]>

Merge branch 'omap-for-upstream' of git://git.linaro.org/people/pmaydell/qemu-arm into pm

Merge remote-tracking branch 'kwolf/for-anthony' into staging

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

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

Merge remote-tracking branch 'mst/for_anthony' into staging

Merge remote-tracking branch 'qmp/queue/monitor' into staging

qemu-img: Require larger zero areas for sparse handling

By default, require 4k of consecutive zero bytes for qemu-img to make the
output file sparse by not issuing a write request for the zeroed parts. Add an
-S option to allow users to tune this setting.

This helps to avoid situations where a lot of zero sectors and data sectors are
mixed and qemu-img tended to issue many tiny 512 byte writes.

Signed-off-by: Kevin Wolf <[email protected]>

memory: fix rom_device I/O mode

When adding a rom_device in I/O mode, we incorrectly masked off the low
bits, resulting in a pure RAM map.  Fix my masking off the high bits and
IO_MEM_ROMD, yielding a pure I/O map.

Signed-off-by: Avi Kivity <[email protected]>

omap_gpmc: Implement prefetch engine

This commit implements the prefetch engine feature of the GPMC
which can be used for NAND devices. This includes both interrupt
driven and DMA-filling modes.

Signed-off-by: Peter Maydell <[email protected]>

omap: Wire up the DMA request line to the GPMC

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Pull prefetch engine data into sub-struct

Refactor the gpmc state structure so items relating to
the prefetch engine are in their own sub-struct and have
more useful names.

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Accept a zero mask field on omap3630

OMAP3630 adds an extra bit of address masking, so a mask of
0xb1111 is valid. Unfortunately the GPMC_REVISION is the same as
on the OMAP3430 which only has three bits of address masking, so
we have to derive this feature directly from the OMAP revision
rather than from the GPMC revision.

Signed-off-by: Juha Riihimäki <[email protected]>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <[email protected]>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: Peter Maydell <[email protected]>

hw/omap.h: Add OMAP 3630 to omap_mpu_model enumeration

Add the OMAP 3630 to the omap_mpu_model enumeration, and add the
corresponding cpu_is_omap3630() function.

(OMAP3 isn't supported yet but this is useful in upgrading common
components to be "OMAP3 ready". We already have this for OMAP3430.)

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Support NAND devices

Support accesses to NAND devices, both by mapping them into
the GPMC address space, and via the NAND_COMMAND, NAND_ADDRESS
and NAND_DATA GPMC registers.

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Reindent misindented switch statements

Whitespace-only change fixing indentation.

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Calculate revision from OMAP model

Signed-off-by: Juha Riihimäki <[email protected]>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <[email protected]>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Take omap_mpu_state* in omap_gpmc_init

Take a pointer to the omap mpu state struct in omap_gpmc_init.
Some details of GPMC behaviour depend on the OMAP version we
are a part of.

Signed-off-by: Juha Riihimäki <[email protected]>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <[email protected]>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Fix handling of FIFOTHRESHOLDSTATUS bit

The OMAP3 TRM is inconsistent about whether the GPMC FIFOTHRESHOLDSTATUS
bit should be set when FIFOPOINTER > FIFOTHRESHOLD or when it is >=
FIFOTHRESHOLD. Apparently the underlying functional spec from which
the TRM was created states that the behaviour is ">=", and this also
makes more conceptual sense.

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Wire up the GPMC IRQ correctly

The omap_gpmc wasn't actually wiring up its IRQ, so
anything that provoked an interrupt would be using
uninitialised data for its IRQ number.

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: GPMC_IRQSTATUS is write-one-to-clear

Fix a bug in the handling of writes to GPMC_IRQSTATUS:
it behaves as "write one to clear, writing zero is ignored".

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Refactor omap_gpmc_cs_map and omap_gpmc_cs_unmap

Refactor the omap_gpmc_cs_map/unmap functions:
 * take the omap_gpmc_s* and a chipselect id rather than the
   omap_gpmc_cs_file_s*, so they have access to the general gpmc
   member fields
 * extract the base and mask from the config registers in the functions
   rather than at every callsite
 * check for CSVALID in the functions rather than at every callsite

Signed-off-by: Peter Maydell <[email protected]>

omap_gpmc: Clean up omap_gpmc_attach MemoryRegion conversion

Now that all callers of omap_gpmc_attach pass in a MemoryRegion*,
we can remove the base_update and unmap function pointer arguments,
and the opaque pointer that was passed into these callbacks.

We can also remove the base and size fields from omap_gpmc_cs_file_s
as these are no longer necessary (you don't need the base/size
to unmap a MemoryRegion the way you did to undo a mapping made
with cpu_register_physical_memory()).

Signed-off-by: Peter Maydell <[email protected]>

hw/onenand: Minor spacing fixes

Minor whitespace-only cleanup (separated out from the qdevifying
patch for clarity).

Signed-off-by: Juha Riihimäki <[email protected]>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <[email protected]>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: Peter Maydell <[email protected]>

hw/onenand: Qdevify

Qdevify the ONENAND device.

Signed-off-by: Juha Riihimäki <[email protected]>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <[email protected]>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: Peter Maydell <[email protected]>

hw/onenand: Remove unnecessary argument from onenand_command()

Refactor onenand_command() -- since it is essentially a method of
the device object, it doesn't make sense to pass in something as
an argument which is one of the object's own member fields.

Signed-off-by: Juha Riihimäki <[email protected]>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: Riku Voipio <[email protected]>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: Peter Maydell <[email protected]>

hw/sysbus: Add sysbus_mmio_get_region()

Add a sysbus_mmio_get_region() which allows users of sysbus
devices to turn a (SysBusDevice*, mmioidx) tuple into a
MemoryRegion*. This enables some useful simplifications of
devices which pass through another device's mmio region
(either directly or by implementing some kind of memory
controller device).

Signed-off-by: Peter Maydell <[email protected]>

sh_pci: Fix sh_pci memory alias confusion

The a7 area was set up as an alias of itself, rather than the p4 area.  This
sent the memory core into infinite recursion.

Fix by aliasing the a7 area to the p4 area.

Signed-off-by: Avi Kivity <[email protected]>

Fix disabling interrupts in sun4u

clear interrupt request if the interrupt priority < CPU pil
clear hardware interrupt request if interrupts are disabled

Signed-off-by: Artyom Tarasenko <[email protected]>
[[email protected]: added a comment about magic 2]
Signed-off-by: Blue Swirl <[email protected]>

xilinx: Convert most xilinx devices to MemoryRegion

This converts ethlite, intc, timer and uartlite to use
MemoryRegions.

Signed-off-by: Edgar E. Iglesias <[email protected]>

TCG: improve optimizer debugging

Use enum TCGOpcode instead of plain old int so that the name of
current op can be seen in GDB. Add a default case to switch
so that GCC does not complain about unhandled enum cases.

Signed-off-by: Blue Swirl <[email protected]>

dyngen-exec.h: cleanup

Remove unused or otherwise available stuff.

Signed-off-by: Blue Swirl <[email protected]>

g364fb: convert to qdev

Extract G364 ROM contents from device emulation to machine emulation,
so device emulation can be reused in other machines (Commodore Amiga)

Signed-off-by: Hervé Poussineau <[email protected]>
Signed-off-by: Blue Swirl <[email protected]>

g364fb: use trace framework

Signed-off-by: Hervé Poussineau <[email protected]>
Signed-off-by: Blue Swirl <[email protected]>

checkpatch: fix braces {} handling

checkpatch.pl doesn't report warning for if/else statements with missing
'else' braces:

if (something) {
    foo;
} else
    bar;

The patch has been tested using the last 100 commits.

Signed-off-by: Pavel Borzenkov <[email protected]>
Signed-off-by: Blue Swirl <[email protected]>

Fix linker scripts

Remove PROVIDE_HIDDEN and ONLY_IF_{RO,RW} from linker scripts to make
them work with older binutils versions.  Fixes *-bsd-user build on
OpenBSD 4.9 which ships binutils 2.15.

Signed-off-by: Gerd Hoffmann <[email protected]>
Signed-off-by: Blue Swirl <[email protected]>

Fix build on OpenBSD with BSD userland emu and smartcard NSS enabled

The first issue is the hard coded POSIX Real Time extensions library in the
libcacard/Makefile. From looking at the code it doesn't seem this is necessary
anyway. Robert Relyea seems to think it most likely isn't necessary.

The second issue was the missing exclusion of the BSD userland binary
builds from the addition of this Makefile target for the smartcard NSS
code which breaks the builds if smartcard NSS support is enabled.

pastebin clip of the build failure..

http://pastebin.com/raw.php?i=BLCKd3s6

Signed-off-by: Brad Smith <[email protected]>
Signed-off-by: Blue Swirl <[email protected]>

block: latency accounting

Account the total latency for read/write/flush requests.  This allows
management tools to average it based on a snapshot of the nr ops
counters and allow checking for SLAs or provide statistics.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

vhost-net: cleanup host notifiers at last step

When the vhost notifier is disabled, the userspace handler runs
immediately: virtio_pci_set_host_notifier_internal might
call virtio_queue_notify_vq.
Since the VQ state and the tap backend state aren't
recovered yet, this causes
"Guest moved used index from XXX to YYY" assertions.

The solution is to split out host notifier handling
from vhost VQ setup and disable notifiers as our last step
when we stop vhost-net. For symmetry enable them first thing
on start.

Signed-off-by: Michael S. Tsirkin <[email protected]>

linux-user: Correct a few missuses of host addresses

Fix a few cases where we were passing host pointers to the
guest.

Signed-off-by: Edgar E. Iglesias <[email protected]>

memory: add opaque parameter to memory_region_init_rom_device()

The MemoryRegionOps callbacks expect it.

Signed-off-by: Avi Kivity <[email protected]>

microblaze: Add an MSR_PVR constant and use it.

Signed-off-by: Edgar E. Iglesias <[email protected]>

microblaze: Make the MSR PVR bit non writable

Instead of hardcoding it to 1.

Signed-off-by: Edgar E. Iglesias <[email protected]>

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

This reverts commit 8ef9ea85a2cc1007eaefa53e6871f1f83bcef22d, reversing
changes made to 444dc48298c480e42e15a8fe676be737d8a6b2a1.

From Avi:

  Please revert the entire pull (git revert 8ef9ea85a2cc1) while I work this
  out - it isn't trivial.

Signed-off-by: Anthony Liguori <[email protected]>

vga: Silence bogus gcc warning about uninitialized variables

Some gcc versions do not properly detect that all possible cases are
covered and base and size are always initialized. Please gcc by defining
a pseudo default case.

Signed-off-by: Jan Kiszka <[email protected]>
Signed-off-by: Anthony Liguori <[email protected]>

block: explicit I/O accounting

Decouple the I/O accounting from bdrv_aio_readv/writev/flush and
make the hardware models call directly into the accounting helpers.

This means:
 - we do not count internal requests from image formats in addition
   to guest originating I/O
 - we do not double count I/O ops if the device model handles it
   chunk wise
 - we only account I/O once it actuall is done
 - can extent I/O accounting to synchronous or coroutine I/O easily
 - implement I/O latency tracking easily (see the next patch)

I've conveted the existing device model callers to the new model,
device models that are using synchronous I/O and weren't accounted
before haven't been updated yet.  Also scsi hasn't been converted
to the end-to-end accounting as I want to defer that after the pending
scsi layer overhaul.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

monitor: fix build breakage for !CONFIG_VNC

Commit c62f6d1 (monitor: fix build breakage with --disable-vnc)
conditionalised some VNC setup code but left an unused variable.  Move
the variable into the conditional code to fix the build breakage.

Cc: Luiz Capitulino <[email protected]>
Cc: Markus Armbruster <[email protected]>
Signed-off-by: Jamie Iles <[email protected]>
Signed-off-by: Luiz Capitulino <[email protected]>

qcow2: remove unused qcow2_create_refcount_update function

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: use always stderr for debugging

let all DEBUG_ALLOC2 printf goes to stderr

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

Merge remote-tracking branch 'stefanha/trivial-patches' into staging

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

Merge remote-tracking branch 'aneesh/for-upstream-2' into staging

memory: fix memory_region_init_rom_device() not initializing ->ops

Signed-off-by: Avi Kivity <[email protected]>

disasm: update comment

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Stefan Hajnoczi <[email protected]>

Fix up some style nits of last uq/master merge

Signed-off-by: Jan Kiszka <[email protected]>
Signed-off-by: Stefan Hajnoczi <[email protected]>

milkymist: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

milkymist-softusb: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

milkymist-minimac2: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

mcf5208: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

mainstone: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

lm32_boards: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

g364fb: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

dummy_m68k: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

pflash_cfi01/pflash_cfi02: convert to memory API

cfi02 is annoying in that is ignores some address bits; we probably
want explicit support in the memory API for that.

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

Makefile.hw: allow hw/ files to include glib headers

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

piix_pci: wrap memory update in a transaction

The code will remap all PAMs, even if just one is updated, resulting
in reduced performance.  Wrap in a transaction to detect that those
other PAMs have not changed.

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

cirrus: wrap memory update in a transaction

This prevents spurious unmapping and remapping of the vga windows,
which reduces performance.

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

leon3: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

integratorcp: convert to memory API (RAM/flash only)

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

sysbus: add sysbus_add_memory_overlap()

Signed-off-by: Avi Kivity <[email protected]>

axis_dev88: convert to memory API (RAM only)

Reviewed-by: Richard Henderson <[email protected]>
Acked-by: Edgar E. Iglesias <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

ppc_oldworld, ppc_newworld: fix escc BAR related crash

ppc maps the escc mmio region both at a fixed offset (as a sysbus area) and as part of a PCI BAR.
This crashes, since a MemoryRegion may have only one parent.  Use an alias so we have a separate
MemoryRegion for the BAR.

Signed-off-by: Avi Kivity <[email protected]>

gt64xxx: fix crash in gt64120_pci_mapping()

The map/unmap code was assymetric - unmap used the local MemoryRegion while
map used isa_mmio_init(), which cannot handle dynamic mappings.

Fix by using isa_mmio_setup() and the local MemoryRegion.

Signed-off-by: Avi Kivity <[email protected]>
Signed-off-by: Edgar E. Iglesias <[email protected]>

armv7m: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

an5206: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

ReadWriteHandler: remove

No longer used.

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

pci_host: convert conf index and data ports to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

sysbus: add helpers to add and delete memory regions to the system bus

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

stellaris_enet: convert to memory API

Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>

sheepdog: use coroutines

This makes the sheepdog block driver support bdrv_co_readv/writev
instead of bdrv_aio_readv/writev.

With this patch, Sheepdog network I/O becomes fully asynchronous.  The
block driver yields back when send/recv returns EAGAIN, and is resumed
when the sheepdog network connection is ready for the operation.

Signed-off-by: MORITA Kazutaka <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

pci: Error on PCI capability collisions

Nothing good can happen when we overlap capabilities. This may happen
when plugging in assigned devices or when devices models contain bugs.
Detect the overlap and report it.

Based on qemu-kvm commit by Alex Williamson.

Signed-off-by: Jan Kiszka <[email protected]>
Acked-by: Don Dutile <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

pcie/aer: fix inject aer error command

various fixes to make aer inject error command work.
- wrong assert
- command line parser
- err.status needs initialization

Signed-off-by: Isaku Yamahata <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

pcie/slot: fix hotplug event

When slot status register is cleared, PCIDevice::exp.hpev_notify
needs to be cleared.
Otherwise, PCIDevice::exp.hpev_notify is never set to false resulting
in no more hot plug event once it's raised.

Signed-off-by: Isaku Yamahata <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

PPC: E500: Set ESR values

When an exception occurs on BookE, we need to set ESR bits to expose
to the guest information on what exactly happened. Add the obvious ones.

Reported-by: Jason Wessel <[email protected]>
Signed-off-by: Alexander Graf <[email protected]>
Signed-off-by: Edgar E. Iglesias <[email protected]>

PPC: E500: Inject SPE exception on invalid SPE access

When accessing an SPE instruction despite it being not available,
throw an SPE exception instead of an APU exception. That way the
guest knows what's going on and actually uses SPE.

Reported-by: Jason Wessel <[email protected]>
Signed-off-by: Alexander Graf <[email protected]>
Signed-off-by: Edgar E. Iglesias <[email protected]>

PPC: E500: Add ESR bit definitions

The BookE spec specifies a number of ESR bits. Add defines for them
so we can use them later on.

Reported-by: Jason Wessel <[email protected]>
Signed-off-by: Alexander Graf <[email protected]>
Signed-off-by: Edgar E. Iglesias <[email protected]>

hw/omap_gpmc: Don't try to map CS0 twice on reset

Remove a spurious second map of the OMAP GPMC CS0 region on reset.
This fixes an assertion failure when we try to add the region to
its container when it was already added. (The old code did not
complain about mismatched map/unmap calls, but the new MemoryRegion
implementation does.)

Signed-off-by: Peter Maydell <[email protected]>
Signed-off-by: Edgar E. Iglesias <[email protected]>

tcg: Update --enable-debug for TCG_OPF_NOT_PRESENT.

Signed-off-by: Richard Henderson <[email protected]>
Reviewed-by: Peter Maydell <[email protected]>
Signed-off-by: Edgar E. Iglesias <[email protected]>

qcow2: remove memory leak

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: Removed QCowAIOCB entirely

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: reindent and use while before the big jump

prepare to remove read/write callbacks

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: remove common from QCowAIOCB

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: remove cluster_offset from QCowAIOCB

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: remove l2meta from QCowAIOCB

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: removed cur_nr_sectors field in QCowAIOCB

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow2: Removed unused AIOCB fields

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>

qcow: remove old #undefined code

Signed-off-by: Frediano Ziglio <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>