Sheepdog is a distributed storage system for QEMU. It provides highly
available block level storage volumes to VMs like Amazon EBS.  This
patch adds a qemu block driver for Sheepdog.

Sheepdog features are:
- No node in the cluster is special (no metadata node, no control
  node, etc)
- Linear scalability in performance and capacity
- No single point of failure
- Autonomous management (zero configuration)
- Useful volume management support such as snapshot and cloning
- Thin provisioning
- Autonomous load balancing

The more details are available at the project site:
    http://www.osrg.net/sheepdog/Signed-off-by: NMORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Compile piix4 in hwlib. Two compilations less for the full build.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NHuacai Chen <zltjiangshi@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

This patch adds required infrastructure for the new security model.

- A new configure option for attr/xattr.
- if CONFIG_VIRTFS will be defined if both CONFIG_LINUX and CONFIG_ATTR defined.
- Defines routines related to both security models.
Signed-off-by: NVenkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

OS specific files are not target dependent, so they can be compiled
once for all targets.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Introduce OS specific cmdline argument handling by calling
os_parse_cmd_args() at the end of switch() statement. Move option
enum to qemu-options.h and have it included from os-posix.c and
os-win32.c in addition to vl.c.

In addition move SMB argument to os-posix.c
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Acked-by: NJuan Quintela <quintela@redhat.com>
Acked-by: NRichard Henderson <rth@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Rename qemu-options.h to qemu-options.def as it is not a header file
for general use and this leaves space for a proper qemu-options.h
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Acked-by: NJuan Quintela <quintela@redhat.com>
Acked-by: NRichard Henderson <rth@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Introcuce os-posix.c and move posix specific signal handling
there.
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Acked-by: NJuan Quintela <quintela@redhat.com>
Acked-by: NRichard Henderson <rth@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

This introduces os-win32.c. It is meant to carry win32 specific
functions thata are not relevant for all of QEMU as well as win32
versions of various pieces like signal handling etc.

Move win32 polling handler helper functions from vl.c to os-win32.c
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Acked-by: NJuan Quintela <quintela@redhat.com>
Acked-by: NRichard Henderson <rth@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Anything that moves hundreds of lines out of vl.c can't be all bad.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Add support for tight encoding [1]. This patch only add support
for "basic" tight compression without any filter.

[1] http://tigervnc.org/cgi-bin/rfbproto#tight-encoding.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Add a new cursor type to console.h and a bunch of functions to
deal with cursors the (new) cursor.c file.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Use a qemu_irq to request CPU exit.

7 compilations less for the full build.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Use a qemu_irq to indicate A20 line changes. Move I/O port 92
to pckbd.c.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

12 compilations less for the full build.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

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

This patch creates a new command line option named -fsdev to hold any file
system specific information.

The option will currently hold the following attributes:
-fsdev fstype id=id,path=path_to_share
where
fstype: Type of the file system.
id:     Identifier used to refer to this fsdev
path:   The path on the host that is identified by this fsdev.

[aneesh.kumar@linux.vnet.ibm.com: Abstraction using FsContext]
Signed-off-by: NGautham R Shenoy <ego@in.ibm.com>
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This will allow to implement new encodings (tight, zrle, ..)
in a cleaner way. This may hurt performances, because some
functions like vnc_convert_pixel are not static anymore, but
should not be a problem with gcc 4.5 and the new -flto.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

We're running into various problems because the "raw" file access, which
is used internally by the various image formats is entangled with the
"raw" image format, which maps the VM view 1:1 to a file system.

This patch renames the raw file backends to the file protocol which
is treated like other protocols (e.g. nbd and http) and adds a new
"raw" image format which is just a wrapper around calls to the underlying
protocol.

The patch is surprisingly simple, besides changing the probing logical
in block.c to only look for image formats when using bdrv_open and
renaming of the old raw protocols to file there's almost nothing in there.

For creating images, a new bdrv_create_file is introduced which guesses the
protocol to use. This allows using qemu-img create -f raw (or just using the
default) for both files and host devices. Converting the other format drivers
to use this function to create their images is left for later patches.

The only issues still open are in the handling of the host devices.
Firstly in current qemu we can specifiy the host* format names
on various command line acceping images, but the new code can't
do that without adding some translation.  Second the layering breaks
the no_zero_init flag in the BlockDriver used by qemu-img.  I'm not
happy how this is done per-driver instead of per-state so I'll
prepare a separate patch to clean this up.

There's some more cleanup opportunity after this patch, e.g. using
separate lists and registration functions for image formats vs
protocols and maybe even host drivers, but this can be done at a
later stage.

Also there's a check for protocol in bdrv_open for the BDRV_O_SNAPSHOT
case that I don't quite understand, but which I fear won't work as
expected - possibly even before this patch.

Note that this patch requires various recent block patches from Kevin
and me, which should all be in his block queue.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The virtio-net code uses iov_fill() which fills an iov from a linear
buffer. The virtio-serial-bus code does something similar in an
open-coded function.

Create a new iov.c file that has iov_from_buf().

Convert virtio-net and virtio-serial-bus over to use this functionality.
virtio-net used ints to hold sizes, the new function is going to use
size_t types.

Later commits will add the opposite functionality -- going from an iov
to a linear buffer.
Signed-off-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

To be able to use config files for blkdebug, we need to make these functions
available in the tools. This involves moving two functions that can only be
built in the context of the emulator.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

This isn't doing anything interesting. It creates the blkdebug block driver as
a protocol which just passes everything through to raw.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

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

Since kvm.h can be used in files compiled once,
we can partially revert
b33612d0.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

use empty_slot device for the RAM which is not installed

Models without ECC don't trap when missing ram is accessed.

v0->v1 compile only once and fix indentation
Signed-off-by: NArtyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Convert remaining OHCI devices to QDEV interface.
Signed-off-by: NPaul Brook <paul@codesourcery.com>

This reverts commit f1698408.

PCI is always little-endian. Having a user-visible "be" property is just
plain wrong.

Taken from binutils SVN, using last GPLv2 version.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

With vhost, virtio-pci needs to include kvm.h and kvm.h needs to be built
per-target.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Make vl.o compiled per target and fix a thinko in hw/acpi.c.  It's not trivial
to make kvm.h consumable by compiled-once files.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Make byte swapping unconditional since PPC is big endian.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Make byte swapping unconditional since PPC is big endian.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Arrange various declarations so that also non-CPU code can access
them, adjust users.

Move CPU specific code to cpus.c.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Replace TARGET_PAGE_SIZE with 4096. Make byte swapping unconditional
since PPC is big endian.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Replace TARGET_PAGE_SIZE with 4096. Make byte swapping unconditional
since PPC is big endian.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Push TARGET_WORDS_BIGENDIAN dependency to board level.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Push TARGET_WORDS_BIGENDIAN dependency to board level.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Use qemu_irqs to trigger CMOS S3 and SMI events.

Avoid using kvm.h, which uses CPUState.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Move target specific functions and RAM handling to arch_init.c.

Add a flag to QEMUOptions structure to indicate for which
architectures the option is allowed, check the flag
in run time and remove conditional code in option handling.

Now that no target dependencies remain, compile vl.c only once
for all targets.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

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