pc: fix qemu exiting with error when -m X < 128 with old machines types

If machine doesn't support memory hotplug then staring QEMU
with initial memory less than default will make QEMU exit with
following error message:

$QEMU -m 16  -M isapc
qemu-system-i386: "-memory 'slots|maxmem'" is not supported by: isapc

Set maxram_size to initial memory value before parsing
'maxmem' option allows to keep maxmem in sync with initial
memory size if no maxmem option was specified.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
CC: Bruce Rogers <brogers@suse.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pc_piix: Reuse pc_compat_1_2() for pc-0.1[0123]

pc-0.13 and older were missing some compat code that was present on
newer machine-types:

* x86_cpu_compat_disable_kvm_features(FEAT_1_ECX, CPUID_EXT_X2APIC);
  (pc-i440fx-1.7 and older)
  (added by commit ef02ef5f4536dba090b12360a6c862ef0e57e3bc)
* x86_cpu_compat_set_features("n270", FEAT_1_ECX, 0, CPUID_EXT_MOVBE);
  (pc-i440fx-1.4 and older)
  (added by commit 4458c23672904fa131e69897007eeb7c953be7e5
* x86_cpu_compat_set_features("Westmere", FEAT_1_ECX, 0, CPUID_EXT_PCLMULQDQ);
  (pc-i440fx-1.4 and older)
  (added by commit 56383703c060777fd01aaf8d63d5f46d660e9fb9)

Instead of duplicating the code from the previous pc_compat_*()
functions, we can now reuse pc_compat_1_2() and fix those issues.

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>
fix typo: apci -> acpi

Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: rebase
qtest: fix vhost-user-test compilation with old GLib

Mising G_TIME_SPAN_SECOND definition breaks the RHEL6 compilation as GLib
version before 2.26 does not have it. In such case just define it.

Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
SIOCGIFINDEX: fix typo

Wrong type was used in ioctl definition.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
qemu-user: Impl. setsockopt(SO_BINDTODEVICE)

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
linux-user: handle AF_PACKET sockaddrs in target_to_host_sockaddr

Implement conversion of the AF_PACKET sockaddr subtype
in target_to_host_sockaddr.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
alloca one extra byte sockets

target_to_host_sockaddr() may increase the lenth with 1 byte
for AF_UNIX sockets so allocate 1 extra byte.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
linux-aio: Fix laio resource leak

when hotplug virtio-scsi disks using laio, the aio_nr will
increase in laio_init() by io_setup(), we can see the number by
  # cat /proc/sys/fs/aio-nr
  128
if the aio_nr attach the maxnum, which found from
  # cat /proc/sys/fs/aio-max-nr
  65536
the hotplug process will fail because of aio context leak.

Fix it by io_destroy in laio_cleanup().

Reported-by: daifulai <daifulai@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
virtio-blk: data-plane: fix save/set .complete_request in start

The callback has to be saved and reset in virtio_blk_data_plane_start(),
otherwise dataplane's requests will be completed in qemu aio context.

Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
virtio-blk: dataplane: notify guest as a batch

Now requests are submitted as a batch, so it is natural
to notify guest as a batch too.

This may suppress interrupt notification to VM a lot:

        - in my test, decreased by ~13K/sec

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Block pull request

# gpg: Signature made Tue 15 Jul 2014 14:49:01 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/block-pull-request:
  virtio-blk: dataplane: notify guest as a batch
  virtio-blk: data-plane: fix save/set .complete_request in start
  linux-aio: Fix laio resource leak

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
linux-user: use TARGET_SA_ONSTACK in get_sigframe

As reported by Laurent, which should use TARGET_SA_ONSTACK
on arm, microblaze and openrisc targets like we do on all
others. Practical matter is minimal as for almost all archs
SA_ONSTACK is 0x08000000:

http://lxr.free-electrons.com/ident?i=SA_ONSTACK

Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Merge remote-tracking branch 'remotes/agraf/tags/signed-ppc-for-upstream' into staging

Patch queue for ppc - 2014-07-15

Some more bug fixes during the RC phase:

  - Fix huge page mapping regressions
  - Fix Book3S thread number enumeration
  - Fix Book3S VFIO permission issue

# gpg: Signature made Tue 15 Jul 2014 15:13:54 BST using RSA key ID 03FEDC60
# gpg: Can't check signature: public key not found

* remotes/agraf/tags/signed-ppc-for-upstream:
  sPAPR/IOMMU: Fix TCE entry permission
  spapr: Enable use of huge pages
  spapr: Move RMA memory region registration code
  ppc: memory: Replace memory_region_init_ram with memory_region_allocate_system_memory
  target-ppc: Fix number of threads per core limit

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Merge remote-tracking branch 'remotes/riku/linux-user-for-upstream' into staging

* remotes/riku/linux-user-for-upstream:
  linux-user: use TARGET_SA_ONSTACK in get_sigframe
  alloca one extra byte sockets
  linux-user: handle AF_PACKET sockaddrs in target_to_host_sockaddr
  qemu-user: Impl. setsockopt(SO_BINDTODEVICE)
  SIOCGIFINDEX: fix typo

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target-i386: Allow execute from user mode when SMEP is enabled.

Previously, execute would be disabled for all pages with SMEP enabled,
regardless of what mode the access took place in.

Signed-off-by: Ricky Zhou <ricky@rzhou.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
tests/Makefile: Only run vhost-user-test on Linux

vhost-user-test uses the linux/vhost.h header, so it must only be
enabled if CONFIG_LINUX is defined. (Previously it was enabled
for CONFIG_POSIX, which broke 'make check' on MacOSX.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Update version for v2.1.0-rc2 release

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
vmstate static checker: detect section renames

Commit 292b1634 changed the section name of "ICH9 LPC" to "ICH9-LPC",
and that causes the static checker to flag this:

Section "ICH9 LPC" does not exist in dest

This patch introduces a function that checks for section renames and
also a dictionary that maps those renames.

Reported-by: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>

---
This is a small patch to a script; doesn't break qemu and helps with the
static checker, so it's a very low-risk patch for 2.1.
virtio-serial-bus: keep port 0 reserved for virtconsole even on unplug

We keep port 0 reserved for compat with older guests, where only
virtio-console was expected.  Even if a system is started without a
virtio-console port, port #0 is kept aside.  However, after a
virtconsole port is unplugged, port id 0 became available, and the next
hotplug of a virtserialport caused failure due to it not being a console
port.

Steps to reproduce:

$ ./x86_64-softmmu/qemu-system-x86_64 -m 512 -cpu host -enable-kvm -device virtio-serial-pci -monitor stdio  -vnc :1
QEMU 2.0.91 monitor - type 'help' for more information
(qemu) device_add virtconsole,id=p1
(qemu) device_del p1
(qemu) device_add virtserialport,id=p1
Port number 0 on virtio-serial devices reserved for virtconsole devices for backward compatibility.
Device 'virtserialport' could not be initialized
(qemu) quit

Reported-by: dengmin <mdeng@redhat.com>
Reviewed-by: Amos Kong <akong@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>