mips/kvm: Init EBase to correct KSEG0

The EBase CP0 register is initialised to 0x80000000, however with KVM
the guest's KSEG0 is at 0x40000000. The incorrect value doesn't get
passed to KVM yet as KVM doesn't implement the EBase register, however
we should set it correctly now so as not to break migration/loadvm to a
future version of QEMU that does support EBase.

Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
qtest: enable vhost-user-test

Use qtest-obj-y to get the right library order. CONFIG_POSIX ensures
mingw compilation won't break.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: whitespace tweak
numa: check for busy memory backend

Specifying the same memory backend twice leads to an assert:

./x86_64-softmmu/qemu-system-x86_64 -m 512M -enable-kvm -object
memory-backend-ram,size=256M,id=ram0 -numa node,nodeid=0,memdev=ram0
-numa node,nodeid=1,memdev=ram0
qemu-system-x86_64: /scm/qemu/memory.c:1506:
memory_region_add_subregion_common: Assertion `!subregion->container'
failed.
Aborted (core dumped)

Detect and exit with an error message instead.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pc-dimm: error out if memory hotplug is not enabled

fixes QEMU abort in case it's started without memory
hotplug enabled.

as result of fix it will print following messages:
"
-device pc-dimm,id=d1,memdev=m1: memory hotplug is not enabled, enable it on startup
-device pc-dimm,id=d1,memdev=m1: Device 'pc-dimm' could not be initialized
"

Also fixup assert condition to detect hotplug address
space overflow.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reported-by:  Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
virtio: move common virtio properties to bus class device

The two common virtio features can be defined per bus, so move all
into bus class device to make code more clean.

As discussed with cornelia, s390-virtio-blk doesn't support
the two features at all, so keep s390-virtio as it.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> #for s390 ccw
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: rebase and resolve conflicts
Handle G_IO_HUP in tcp_chr_read for tcp chardev

Since commit cdaa86a54b232572bba594bf87a7416e527e460c
("Add G_IO_HUP handler for socket chardev")
GLib limitation results in a bug on Windows host. Steps to reproduce:

Start qemu: qemu-system-i386 -qmp tcp:127.0.0.1:4444:server:nowait
Connect with telnet: telnet 127.0.0.1 4444
Try sending some data from telnet.
Expected result: answers from QEMU.
Observed result: no answers (actually tcp_chr_read is not called at all).

Due to GLib limitations it is not possible to create several watches on one
channel on Windows hosts. See bug #338943 in GNOME bugzilla for details:
https://bugzilla.gnome.org/show_bug.cgi?id=338943

This reimplements commit cdaa86a54b232572bba594bf87a7416e527e460c
("Add G_IO_HUP handler for socket chardev") using a single watch:

Handle G_IO_HUP in tcp_chr_read instead. It is already watched by a
corresponding watch.  Remove the second watch with its handler.

Cc: Antonios Motakis <a.motakis@virtualopensystems.com>
Cc: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru>
Signed-off-by: Nikita Belov <zodiac@ispras.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci: assign devfn to pci_dev before calling pci_device_iommu_address_space()

In function do_pci_register_device() in file hw/pci/pci.c, move the assignment
of pci_dev->devfn to the position before the call to
pci_device_iommu_address_space(pci_dev) which will use the value of
pci_dev->devfn.

Fixes: 9eda7d373e9c691c070eddcbe3467b991f67f6bd
    pci: Introduce helper to retrieve a PCI device's DMA address space

Cc: qemu-stable@nongnu.org
Signed-off-by: Le Tan <tamlokveer@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
acpi: fix typo in memory hotplug MMIO region name

Reported-by: Sergey Fionov <fionov@gmail.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
hw/virtio: enable common virtio feature for mmio device

Both 'indirect_desc' and 'event_idx' are bus independent features,
and they should be enabled for mmio devices too.

On arm64 quad core VM(qemu-kvm), the patch can increase block I/O
performance a lot with latest linux tree:
        - without the patch: 14K IOPS
        - with the patch: 34K IOPS

fio script:
        [global]
        direct=1
        bsrange=4k-4k
        timeout=10
        numjobs=4
        ioengine=libaio
        iodepth=64

        filename=/dev/vdc
        group_reporting=1

        [f1]
        rw=randread

Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
qdev: Don't abort() in case globals can't be set

It would be much better if we didn't terminate QEMU inside
device_post_init(), but at least exiting cleanly is better than aborting
and dumping core.

Before this patch:

    $ qemu-system-x86_64 -global cpu.xxx=y
    qemu-system-x86_64: Property '.xxx' not found
    Aborted (core dumped)

After this patch:

    $ qemu-system-x86_64 -global cpu.xxx=y
    qemu-system-x86_64: Property '.xxx' not found

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-By: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
qdev: Fix crash when using non-device class name on -global

This fixes the following crash:

    $ qemu-system-x86_64 -global container.xxx=y
    hw/core/qdev-properties-system.c:399:qdev_add_one_global: Object 0x7f7eff234100 is not an instance of type device
    Aborted (core dumped)

New behavior will be to just warn, just like when non-existing clas
names are used:

    $ qemu-system-x86_64 -global container.xxx=y
    qemu-system-x86_64: Warning: "-global container.xxx=y" not used

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Tested-by: Don Slutz <dslutz@verizon.com>
virtio-pci: fix MSI memory region use after free

After memory region QOMification QEMU is stricter in detecting
wrong usage of the memory region API.  Here it detected a
memory_region_destroy done before the corresponding
memory_region_del_subregion; the memory_region_destroy is
done by msix_uninit_exclusive_bar, the memory_region_del_subregion
is done by the PCI core's pci_unregister_io_regions before
pc->exit is called.

The problem was introduced by
commit 06a1307379fcd6c551185ad87679cd7ed896b9ea
    virtio-pci: add device_unplugged callback
As noted in that commit log, virtio device kick callbacks need to be
stopped before generic virtio is cleaned up. This is because these are
notifications from pci proxy to the generic virtio device so they need
to be stopped in the unplug call before the virtio device is unrealized.
However interrupts are notifications from the virtio device to
the pci proxy so they need to stay around while the device
is realized.

The memory API misuse caused an assertion when hot-unplugging virtio
devices.  Using the API correctly fixes the assertion.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
qemu-char: add chr_add_watch support in mux chardev

Forward chr_add_watch call from mux chardev to underlying
implementation.

This should fix bug #1335444

Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
prep: Remove PCI memory hack related to OpenHack'Ware

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
prep: Remove CPU reset entry point hack related to OpenHack'Ware

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
prep: Update ppc_rom.bin

This replaces QEMU-side workarounds for PCI BARs and CPU reset.

Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,vhost,virtio fixes, test

Bugfixes all over the place.

There's a  non bugfix here: re-enabling the vhost-user test,
though the patch just brings back functionality that
I disabled earlier to fix mingw build failures.
This is now sorted, and keeping the unit test enabled
seems important since the feature relies on an external
server to work, so isn't easy to test.

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

# gpg: Signature made Sun 06 Jul 2014 11:01:35 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream:
  qemu-char: add chr_add_watch support in mux chardev
  virtio-pci: fix MSI memory region use after free
  qdev: Fix crash when using non-device class name on -global
  qdev: Don't abort() in case globals can't be set
  hw/virtio: enable common virtio feature for mmio device
  acpi: fix typo in memory hotplug MMIO region name
  pci: assign devfn to pci_dev before calling pci_device_iommu_address_space()
  Handle G_IO_HUP in tcp_chr_read for tcp chardev
  virtio: move common virtio properties to bus class device
  pc-dimm: error out if memory hotplug is not enabled
  numa: check for busy memory backend
  qtest: enable vhost-user-test

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Merge remote-tracking branch 'remotes/afaerber/tags/prep-for-2.1' into staging

PowerPC Reference Platform (PReP)

* Update OpenHack'Ware firmware to replace QEMU-side workarounds

# gpg: Signature made Mon 07 Jul 2014 15:49:42 BST using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg:                 aka "Andreas Färber <afaerber@suse.com>"

* remotes/afaerber/tags/prep-for-2.1:
  prep: Update ppc_rom.bin
  prep: Remove CPU reset entry point hack related to OpenHack'Ware
  prep: Remove PCI memory hack related to OpenHack'Ware

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target-ppc: KVMPPC_H_CAS fix cpu-version endianess

During KVMPPC_H_CAS processing, the cpu-version updated value is stored
without taking care of the current endianess. As a consequence, the guest
may not switch to the right CPU model, leading to unexpected results.

If needed, the value is now converted.

Fixes: 6d9412ea8132 ("target-ppc: Implement "compat" CPU option")
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Reviewed-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
target-ppc: Change default cpu for ppc64le-linux-user

The default, 970fx, doesn't support MSR_LE.  So even though we set LE in
ppc_cpu_reset, it gets cleared again in hreg_store_msr.  Error out if a
user-selected cpu model doesn't support LE.

Signed-off-by: Richard Henderson <rth@twiddle.net>
[agraf: switch to POWER7 as default for BE and LE]
Signed-off-by: Alexander Graf <agraf@suse.de>