https://bugzilla.redhat.com/show_bug.cgi?id=888426

The code for doing a block-copy was supposed to track the destination
file in drive->mirror, but was set up to do all mallocs prior to
starting the copy so that OOM wouldn't leave things partially started.
However, the wrong variable was being written; later in the code we
silently did 'disk->mirror = mirror' which was still NULL, and thus
leaking memory and leaving libvirt to think that the mirror job was
never started, which prevented a pivot operation after a copy.
Problem introduced in commit 35c7701c.

* src/qemu/qemu_driver.c (qemuDomainBlockCopy): Initialize correct
variable.

Since the event APIs are now in the public header, no internal
code should include virevent.h

Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

To bring in line with new naming practice, rename the=
src/util/cgroup.{h,c} files to vircgroup.{h,c}
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

Currently, it only considers PTY backend serial devices for pseries.
It need to support all kinds of serial devices.

This patch is to fix the problem which is that it doesn't work
when specifying source type as file.
Signed-off-by: NLi Zhang <zhlcindy@linux.vnet.ibm.com>

ACPI is only supported on x86 platform, PPC can't support it.
So QEMU_CAPS_NO_ACPI shouldn't be set.

This patch is to remove QEMU_CAPS_NO_ACPI capability for
non-x86 platform.
Signed-off-by: NLi Zhang <zhlcindy@linux.vnet.ibm.com>

Cirrus VGA model is not supported on ppc64 currently.
It needs to set std VGA model as the default model.
Signed-off-by: NLi Zhang <zhlcindy@linux.vnet.ibm.com>

This patch is to enable virSysinfoRead test case for POWER,
and provide sysinfo data on POWER.
Signed-off-by: NLi Zhang <zhlcindy@linux.vnet.ibm.com>
Reviewed-by: NViktor Mihajlovski <mihajlov@linux.vnet.ibm.com>

This patch resolves:

  https://bugzilla.redhat.com/show_bug.cgi?id=889319

When assigning an SRIOV virtual function to a guest using "intelligent
PCI passthrough" (<interface type='hostdev'>, which sets the MAC
address and vlan tag of the VF before passing its info to qemu),
libvirt first learns the current MAC address and vlan tag by sending
an NLM_F_REQUEST message for the VF's PF (physical function) to the
kernel via a NETLINK_ROUTE socket (see virNetDevLinkDump()); the
response message's IFLA_VFINFO_LIST section is examined to extract the
info for the particular VF being assigned.

This worked fine with kernels up until kernel commit
115c9b81928360d769a76c632bae62d15206a94a (first appearing in upstream
kernel 3.3) which changed the ABI to not return IFLA_VFINFO_LIST in
the response until a newly introduced IFLA_EXT_MASK field was included
in the request, with the (newly introduced, of course) RTEXT_FILTER_VF
flag set.

The justification for this ABI change was that new fields had been
added to the VFINFO, causing NLM_F_REQUEST messages to fail on systems
with large numbers of VFs if the requesting application didn't have a
large enough buffer for all the info. The idea is that most
applications doing an NLM_F_REQUEST don't care about VFINFO anyway, so
eliminating it from the response would lower the requirements on
buffer size. Apparently, the people who pushed this patch made the
mistaken assumption that iproute2 (the "ip" command) was the only
package that used IFLA_VFINFO_LIST, so it wouldn't break anything else
(and they made sure that iproute2 was fixed.

The logic of this "fix" is debatable at best (one could claim that the
proper fix would be for the applications in question to be fixed so
that they properly sized the buffer, which is what libvirt does
(purely by virtue of using libnl), but it is what it is and we have to
deal with it.

In order for <interface type='hostdev'> to work properly on systems
with a kernel 3.3 or later, libvirt needs to add the afore-mentioned
IFLA_EXT_MASK field with RTEXT_FILTER_VF set.

Of course we also need to continue working on systems with older
kernels, so that one bit of code is compiled conditionally. The one
time this could cause problems is if the libvirt binary was built on a
system without IFLA_EXT_MASK which was subsequently updated to a
kernel that *did* have it. That could be solved by manually providing
the values of IFLA_EXT_MASK and RTEXT_FILTER_VF and adding it to the
message anyway, but I'm uncertain what that might actually do on a
system that didn't support the message, so for the time being we'll
just fail in that case (which will very likely never happen anyway).

This patch fixes the lack of error messages when libvirt fails to find
VFINFO in a returned netlinke response message.

https://bugzilla.redhat.com/show_bug.cgi?id=827519#c10 is an example
of the error message that was previously logged when the
IFLA_VFINFO_LIST object was missing from the netlink response. The
reason for this failure is detailed in

   https://bugzilla.redhat.com/show_bug.cgi?id=889319

Even though that root problem has been fixed, the experience of
finding the root cause shows us how important it is to properly log an
error message in these cases. This patch *seems* to replace the entire
function, but really most of the changes are due to moving code that
was previously inside an if() statement out to the top level of the
function (the original if() was reversed and made to log an error and
return).

* src/util/buf.c: Use consistent formatting.

Revert the complex workaround of commit 39d91e9f, now that we have
a nicer framework for shutting up broken gcc.

* src/util/buf.c (virBufferEscape): Simplify.

Commit 8b8fcdea introduced a check for broken gcc -Wlogical-op,
but did not guard the check against non-gcc compilers, which might
lead to spurious failures when another compiler encounters an
unknown pragma.  Additionally, all of our compiler warning logic
should belong in a single file, and use cache variables to allow
overriding the decision at configure time if necessary.

* configure.ac (BROKEN_GCC_WLOGICALOP): Move...
* m4/virt-compile-warnings.m4 (LIBVIRT_COMPILE_WARNINGS): ...here,
and update to modern autoconf idioms.