q35: set fw_name

PCI host bridges need to set fw_name to be discoverable
by bios for boot device selection.

In particular, seabios expects root device to be called
"/pci/@i0cf8", so let's set it up like that for Q35.

Cc: qemu-stable@nongnu.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Amos Kong <akong@redhat.com>
dec.c - move to pci-bridge

Looks like dec.c is in pci-host by mistake.
Moving it over to pci-bridge.

Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
firmware_abi: move to include/hw/nvram/

firmware_abi.h with structs for OpenBIOS landed in hw/sparc/ by mistake
- move it to hw/nvram/ alongside fw_cfg.h.  In addition to sparc it's
included from ppc mac_nvram.c and will need to include it from prep.c in
the future.

Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
apic: rename apic specific bitopts

apic has its own version of bitops, with the
difference that it works on u32 and not long.
Add apic_ prefix to avoid namespace clashes.

We should look into reusing standard bitops long-term,
but that's not entirely trivial.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
refer to FWCfgState explicitly

Currently some places use pointer-to-void even though they mean
pointer-to-FWCfgState. Clean them up.

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
fw_cfg: move typedef to qemu/typedefs.h

Less header dependencies this way.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
fw_cfg: add API to find FW cfg object

Remove some code duplication by adding a
function to look up the fw cfg file.
This way, we don't need to duplicate same strings everywhere.
Use by both fw cfg and pvpanic device.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
fw_cfg: fw_cfg is a singleton

Make sure we only have a single instance ever:
because if it isn't we can't find it so it's
useless anyway.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pvpanic: use FWCfgState explicitly

Use the type-safe FWCfgState structure instead
of the unsafe void *.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
xen: simplify xen_enabled

No need for preprocessor conditionals in xen_enabled: xen_allowed is
always defined.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: qemu-stable@nongnu.org
main_loop: do not set nonblocking if xen_enabled()

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: qemu-stable@nongnu.org
xen_machine_pv: do not create a dummy CPU in machine->init

This fixes a regression introduced by:

commit 62fc403f11523169eb4264de31279745f48e3ecc
Author: Igor Mammedov <imammedo@redhat.com>
Date:   Mon Apr 29 18:54:13 2013 +0200

    target-i386: Attach ICC bus to CPU on its creation

    X86CPU should have parent bus so it could provide bus for child APIC.

The commit makes it mandatory to pass a valid ICC bus to cpu_x86_create,
but cpu_x86_init just passes NULL to it.
xen_machine_pv uses cpu_x86_init, therefore it has been broken.

This patch fixes the problem by removing the dummy CPU creation
altogether from xen_init_pv, relying on the fact that QEMU can now cope
with a machine without an emulated CPU.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
CC: imammedo@redhat.com
CC: qemu-stable@nongnu.org
xen: start PCI hole at 0xe0000000 (same as pc_init1 and qemu-xen-traditional)

We are currently setting the PCI hole to start at HVM_BELOW_4G_RAM_END,
that is 0xf0000000.
Start the PCI hole at 0xe0000000 instead, that is the same value used by
pc_init1 and qemu-xen-traditional.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: qemu-stable@nongnu.org
xen: remove xen_vcpu_init

No need for xen_vcpu_init anymore:

- the RTC emulator doesn't have any periodic timers continuously running
even in absence of guest interactions anymore;

- qemu_dummy_start_vcpu takes care of disabling TCG for us, so we don't
need to do it manually here.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
xen: use pc_init_pci instead of pc_init_pci_no_kvmclock

Call kvmclock_create only if kvmclock_enabled.
Use pc_init_pci on Xen rather than pc_init_pci_no_kvmclock.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
qemu-iotests: fix 054 cluster size help output

Commit f3f4d2c09b9cf46903ba38425ec46c44185162bd added a hint to increase
the cluster size when a large image cannot be created.  Test 054 now has
outdated output and fails because the golden output does not match.

This patch updates the 054 golden output.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
block: add block driver read only whitelist

We may want to include a driver in the whitelist for read only tasks
such as diagnosing or exporting guest data (with libguestfs as a good
example). This patch introduces a readonly whitelist option, and for
backward compatibility, the old configure option --block-drv-whitelist
is now an alias to rw whitelist.

Drivers in readonly list is only permitted to open file readonly, and
returns -ENOTSUP for RW opening.

E.g. To include vmdk readonly, and others read+write:
    ./configure --target-list=x86_64-softmmu \
                --block-drv-rw-whitelist=qcow2,raw,file,qed \
                --block-drv-ro-whitelist=vmdk

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qemu-iotests: make assert_no_active_block_jobs() common

Tests 030 and 041 both use query-block-jobs to check whether any block
jobs are active.  Make this code common so that 'drive-backup' and other
new feature tests will be able to reuse it.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qemu-iotests: make cancel_and_wait() common

The cancel_and_wait() function has been duplicated in 030 and 041.  Move
it into iotests.py and let it return the event so tests can perform
additional asserts.

Note that 041's cancel_and_wait(wait_ready=True) is replaced by
wait_ready_and_cancel(), which uses the new wait_ready() and
cancel_and_wait() underneath.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qemu-iotests: make compare_images() common

The iotests.compare_images() function returns True if two image files
have the identical data.  Previously this was implemented by converting
images to raw and then comparing their contents using Python.  Since
"qemu-img compare" is now available and is more efficient, switch to it.

This function will be reused by the 'drive-backup' test case.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>