Derived from the streaming test cases (030), this adds the
following 9 tests:

1. For the following image chain, commit [mid] into [backing],
   and use qemu-io to verify [backing] has its original data, as
   well as the data from [mid]

           [backing] <-- [mid] <-- [test]

2. Verifies that 'block-commit' with the 'speed' parameter sets the
   speed parameter, as reported by 'query-block-jobs'

3. Verifies that a bogus 'device' parameter to 'block-commit'
   results in error

4-9: Appropriate error values returned for the following argument errors:
    * top == base
    * top is nonexistent
    * base is nonexistent
    * top == active layer (this is currently not supported)
    * top and base arguments are reversed
    * top argument is omitted
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The command for live block commit is added, which has the following
arguments:

device: the block device to perform the commit on (mandatory)
base:   the base image to commit into; optional (if not specified,
        it is the underlying original image)
top:    the top image of the commit - all data from inside top down
        to base will be committed into base (mandatory for now; see
        note, below)

speed:  maximum speed, in bytes/sec

Note: Eventually this command will support merging down the active layer,
      but that code is not yet complete.  If the active layer is passed
      in as top, then an error will be returned.  Once merging down the
      active layer is supported, the 'top' argument may become optional,
      and default to the active layer.

The is done as a block job, so upon completion a BLOCK_JOB_COMPLETED will
be emitted.
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

This is a simple helper function, that will return the base image
of a given image chain.
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

This adds the live commit coroutine.  This iteration focuses on the
commit only below the active layer, and not the active layer itself.

The behaviour is similar to block streaming; the sectors are walked
through, and anything that exists above 'base' is committed back down
into base.  At the end, intermediate images are deleted, and the
chain stitched together.  Images are restored to their original open
flags upon completion.
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Add bdrv_find_overlay(), and bdrv_drop_intermediate().

bdrv_find_overlay():  given 'bs' and the active (topmost) BDS of an image chain,
                    find the image that is the immediate top of 'bs'

bdrv_drop_intermediate():
                    Given 3 BDS (active, top, base), drop images above
                    base up to and including top, and set base to be the
                    backing file of top's overlay node.

                    E.g., this converts:

                    bottom <- base <- intermediate <- top <- active

                    to

                    bottom <- base <- active
Signed-off-by: NJeff Cody <jcody@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

This patch adds gluster as the new block backend in QEMU. This gives
QEMU the ability to boot VM images from gluster volumes. Its already
possible to boot from VM images on gluster volumes using FUSE mount, but
this patchset provides the ability to boot VM images from gluster volumes
by by-passing the FUSE layer in gluster. This is made possible by
using libgfapi routines to perform IO on gluster volumes directly.

VM Image on gluster volume is specified like this:

file=gluster[+transport]://[server[:port]]/volname/image[?socket=...]

'gluster' is the protocol.

'transport' specifies the transport type used to connect to gluster
management daemon (glusterd). Valid transport types are
tcp, unix and rdma. If a transport type isn't specified, then tcp
type is assumed.

'server' specifies the server where the volume file specification for
the given volume resides. This can be either hostname, ipv4 address
or ipv6 address. ipv6 address needs to be within square brackets [ ].
If transport type is 'unix', then 'server' field should not be specifed.
The 'socket' field needs to be populated with the path to unix domain
socket.

'port' is the port number on which glusterd is listening. This is optional
and if not specified, QEMU will send 0 which will make gluster to use the
default port. If the transport type is unix, then 'port' should not be
specified.

'volname' is the name of the gluster volume which contains the VM image.

'image' is the path to the actual VM image that resides on gluster volume.

Examples:

file=gluster://1.2.3.4/testvol/a.img
file=gluster+tcp://1.2.3.4/testvol/a.img
file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img
file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img
file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img
file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img
file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket
file=gluster+rdma://1.2.3.4:24007/testvol/a.imgSigned-off-by: NBharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

GlusterFS support in QEMU depends on libgfapi, libgfrpc and
libgfxdr provided by GlusterFS.
Signed-off-by: NBharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The AIO dispatch loop will call QLIST_REMOVE and g_free even if there
are other pending calls to qemu_aio_wait outside the current one.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NBharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Add a new URI parsing library to QEMU. The code has been borrowed from
libxml2 and libvirt.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NBharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Fix qemu_aio_wait() to ensure that registered aio handlers don't get
deleted when they are still active. This is ensured by maintaning the
right count of walking_handlers.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NBharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Currently, after a live snapshot of a drive, the image that has
been 'demoted' to be below the new active layer remains r/w.
This patch reopens it read-only.

Note that we do not check for error on the reopen(), because we
will not abort the snapshots if the reopen fails.

This patch depends on the bdrv_reopen() series.
Signed-off-by: NJeff Cody <jcody@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

When cancelling block migration, all in-flight requests of the block
migration must be completed before the data can be freed. This was
visible as failing assertions and segfaults.
Reported-by: NPeter Lieven <pl@dlhnet.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

* 'arm-devs.for-upstream' of git://git.linaro.org/people/pmaydell/qemu-arm:
  Versatile Express: Add modelling of NOR flash
  Versatile Express: Fix NOR flash 0 address and remove flash alias
  hw/armv7m_nvic: Correctly register GIC region when setting up NVIC
  pl190: fix read of VECTADDR

The blank lines inside the single dump make it difficult for the
eye to pick out the block.  Worse, with interior newlines, but
no blank line following, the PSW line appears to belong to the
next dump block.
Reviewed-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

This is already handled generically in cpu_exec.
Reviewed-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Three places in the interrupt code did we not honor the mask.
Reviewed-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Acked-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Cc: Paul Brook <paul@codesourcery.com>
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

For all targets that currently call tcg_gen_debug_insn_start,
add CPU_LOG_TB_OP_OPT to the condition that gates it.

This is useful for comparing optimization dumps, when the
pre-optimization dump is merely noise.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Support for helper functions with 5 arguments was missing
in the code generator and in the interpreter.

There is no need to pass the constant TCG_AREG0 from the
code generator to the interpreter. Remove that code for
the INDEX_op_qemu_st* opcodes.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

This patch adds modelling of the two NOR flash banks found on the
Versatile Express motherboard. Tested with U-Boot running on an emulated
Versatile Express, with either A9 or A15 CoreTile.
Signed-off-by: NFrancesco Lavra <francescolavra.fl@gmail.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

In the A series memory map (implemented in the Cortex A15 CoreTile), the
first NOR flash bank (flash 0) is mapped to address 0x08000000, while
address 0x00000000 can be configured as alias to either the first or the
second flash bank. This patch fixes the definition of flash 0 address,
and for simplicity removes the alias definition.
Signed-off-by: NFrancesco Lavra <francescolavra.fl@gmail.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

When setting up the NVIC memory regions the memory range
0x100..0xcff is aliased to an IO memory region that belongs
to the ARM GIC.  This aliased region should be added to the
NVIC memory container, but the actual GIC IO memory region
was being added instead.  This mixup was causing the wrong
IO memory access functions to be called when accessing parts
of the NVIC memory.
Signed-off-by: NMeador Inge <meadori@codesourcery.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Reading VECTADDR was causing us to set the current priority to
the wrong value, the most obvious effect of which was that we
would return the vector for the wrong interrupt as the result
of the read.
Signed-off-by: NBrendan Fennell <bfennell@skynet.ie>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Added an option to let qemu transfer a configuration file to bios,
"etc/boot-fail-wait", which could be specified by command
    -boot reboot-timeout=T
T have a max value of 0xffff, unit is ms.

With this option, guest will wait for a given time if not find
bootabled device, then reboot. If reboot-timeout is '-1', guest
will not reboot, qemu passes '-1' to bios by default.

This feature need the new seabios's support.

Seabios pulls the value from the fwcfg "file" interface, this
interface is used because SeaBIOS needs a reliable way of
obtaining a name, value size, and value. It in no way requires
that there be a real file on the user's host machine.
Signed-off-by: NAmos Kong <akong@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NOrit Wasserman <owasserm@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

getaddrinfo can give us a list of addresses, but we only try to
connect to the first one. If that fails we never proceed to
the next one.  This is common on desktop setups that often have ipv6
configured but not actually working.

To fix this make inet_connect_nonblocking retry connection with a different
address.
callers on inet_nonblocking_connect register a callback function that will
be called when connect opertion completes, in case of failure the fd will have
a negative value
Signed-off-by: NOrit Wasserman <owasserm@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

No need to add non blocking parameters to the blocking inet_connect
add block parameter for inet_connect_opts instead of using QemuOpt "block".
Signed-off-by: NOrit Wasserman <owasserm@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

refactor address resolution code to fix nonblocking connect
remove getnameinfo call
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NAmos Kong <akong@redhat.com>
Signed-off-by: NOrit Wasserman <owasserm@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The old code aborted configure when no emulation target was selected.
Even after removing the 'exit 1', it tried to read from STDIN
when QEMU was configured with

    configure' '--disable-user' '--disable-system'

This is fixed here.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This patch adds a "use64" property which will make the ivshmem driver
register a 64bit memory bar when set, so you have something to play with
when testing 64bit pci bits.  It also allows to have quite big shared
memory regions, like this:

[root@fedora ~]# lspci -vs1:1
01:01.0 RAM memory: Red Hat, Inc Device 1110
        Subsystem: Red Hat, Inc Device 1100
        Physical Slot: 1-1
        Flags: fast devsel
        Memory at fd400000 (32-bit, non-prefetchable) [disabled] [size=256]
        Memory at 8040000000 (64-bit, prefetchable) [size=1G]

[ v5: rebase, update compat property for post-1.2 merge ]
[ v4: rebase & adapt to latest master again ]
[ v3: rebase & adapt to latest master ]
[ v2: default to on as suggested by avi,
      turn off for pc-$old using compat property ]
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Tested-by: NCam Macdonell <cam@cs.ualberta.ca>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

All deps that used global qemu_system_powerdown var are now converted
to notifiers, so remove it.
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Acked-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

In addition, there is no need to allocate an extra irq just for
rising SCI in irq handler. Just rise SCI right from notifier
handler instead.
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Notifier will be used for signaling powerdown request to guest in
a more general way and intended to replace very specific
qemu_irq_rise(qemu_system_powerdown) and will allow to remove global
variable qemu_system_powerdown.
Signed-off-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>