Commit e2b8247a introduced an error path in qemu_rbd_open() after
calling rbd_open(), but neglected to close the image again in this error
path. The error path should contain everything that the regular close
function qemu_rbd_close() contains.

This adds the missing rbd_close() call.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

If a management application builds the block graph node by node, the
protocol layer doesn't inherit its read-only option from the format
layer any more, so it must be set explicitly.

Backing files should work on read-only storage, but at the same time, a
block job like commit should be able to reopen them read-write if they
are on read-write storage. However, without option inheritance, reopen
only changes the read-only option for the root node (typically the
format layer), but not the protocol layer, so reopening fails (the
format layer wants to get write permissions, but the protocol layer is
still read-only).

A simple workaround for the problem in the management tool would be to
open the protocol layer always read-write and to make only the format
layer read-only for backing files. However, sometimes the file is
actually stored on read-only storage and we don't know whether the image
can be opened read-write (for example, for NBD it depends on the server
we're trying to connect to). This adds an option that makes QEMU try to
open the image read-write, but allows it to degrade to a read-only mode
without returning an error.

The documentation for this option is consciously phrased in a way that
allows QEMU to switch to a better model eventually: Instead of trying
when the image is first opened, making the read-only flag dynamic and
changing it automatically whenever the first BLK_PERM_WRITE user is
attached or the last one is detached would be much more useful
behaviour.

Unfortunately, this more useful behaviour is also a lot harder to
implement, and libvirt needs a solution now before it can switch to
-blockdev, so let's start with this easier approach for now.

Instead of adding a new auto-read-only option, turning the existing
read-only into an enum (with a bool alternate for compatibility) was
considered, but it complicated the implementation to the point that it
didn't seem to be worth it.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

To fully change the read-only state of a node, we must not only change
bs->read_only, but also update bs->open_flags.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>

This patch tests that you can add and remove drives from a Quorum
using the x-blockdev-change command.
Signed-off-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The blkverify mode of Quorum only works when the number of children is
exactly two, so any attempt to add a new one must return an error.

quorum_del_child() on the other hand doesn't need any additional check
because decreasing the number of children would make it go under the
vote threshold.
Signed-off-by: NAlberto Garcia <berto@igalia.com>
Reported-by: NKevin Wolf <kwolf@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Signed-off-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The blkverify mode of Quorum can only be enabled if the number of
children is exactly two and the value of vote-threshold is also two.

If the user tries to enable it but the other settings are incorrect
then QEMU simply prints an error message to stderr and carries on
disabling the blkverify setting.

This patch makes quorum_open() fail and return an error in this case.
Signed-off-by: NAlberto Garcia <berto@igalia.com>
Reported-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

This is a static function with only one caller, so there's no need to
keep it. Inlining the code in quorum_compare() makes it much simpler.
Signed-off-by: NAlberto Garcia <berto@igalia.com>
Reported-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Taking the address of a field in a packed struct is a bad idea, because
it might not be actually aligned enough for that pointer type (and
thus cause a crash on dereference on some host architectures). Newer
versions of clang warn about this. Avoid the bug by not using the
"modify in place" byte swapping functions.

There are a few places where the in-place swap function is
used on something other than a packed struct field; we convert
those anyway, for consistency.

Patch produced with scripts/coccinelle/inplace-byteswaps.cocci.

There are other places where we take the address of a packed member
in this file for other purposes than passing it to a byteswap
function (all the calls to qemu_uuid_*()); we leave those for now.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Taking the address of a field in a packed struct is a bad idea, because
it might not be actually aligned enough for that pointer type (and
thus cause a crash on dereference on some host architectures). Newer
versions of clang warn about this. Avoid the bug by not using the
"modify in place" byte swapping functions.

There are a few places where the in-place swap function is
used on something other than a packed struct field; we convert
those anyway, for consistency.

Patch produced with scripts/coccinelle/inplace-byteswaps.cocci.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>

While testing the Python 3 changes which touch the 083 test, I noticed
that it would fail with qcow2.  Expanding the testing, I noticed it
had nothing to do with the Python 3 changes, and in fact, it would not
pass on anything but raw:

 raw: pass
 bochs: not generic
 cloop: not generic
 parallels: fail
 qcow: fail
 qcow2: fail
 qed: fail
 vdi: fail
 vhdx: fail
 vmdk: fail
 vpc: fail
 luks: fail

The errors are a mixture I/O and "image not in xxx format", such as:

  === Check disconnect before data ===

  Unexpected end-of-file before all bytes were read
 -read failed: Input/output error
 +can't open device nbd+tcp://127.0.0.1:PORT/foo: Could not open 'nbd://127.0.0.1:PORT/foo': Input/output error

  === Check disconnect after data ===

 -read 512/512 bytes at offset 0
 -512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 +can't open device nbd+tcp://127.0.0.1:PORT/foo: Image not in qcow format

I'm not aware if there's a quick fix, so, for the time being, it looks
like the honest approach is to make the test known to work on raw
only.
Signed-off-by: NCleber Rosa <crosa@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Signed-off-by: NLi Qiang <liq3ea@163.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

This doesn't have any practical effect at the moment because the
values of BDRV_SECTOR_SIZE, QCRYPTO_BLOCK_LUKS_SECTOR_SIZE and
QCRYPTO_BLOCK_QCOW_SECTOR_SIZE are all the same (512 bytes), but
future encryption methods could have different requirements.
Signed-off-by: NAlberto Garcia <berto@igalia.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

The qcow2 block driver expects to see a valid sector size even when it
has opened the crypto layer with QCRYPTO_BLOCK_OPEN_NO_IO.
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Taking the address of a field in a packed struct is a bad idea, because
it might not be actually aligned enough for that pointer type (and
thus cause a crash on dereference on some host architectures). Newer
versions of clang warn about this. Avoid the bug by not using the
"modify in place" byte swapping functions.

There are a few places where the in-place swap function is
used on something other than a packed struct field; we convert
those anyway, for consistency.

This patch was produced with the following spatch script:

@@
expression E;
@@
-be16_to_cpus(&E);
+E = be16_to_cpu(E);
@@
expression E;
@@
-be32_to_cpus(&E);
+E = be32_to_cpu(E);
@@
expression E;
@@
-be64_to_cpus(&E);
+E = be64_to_cpu(E);
@@
expression E;
@@
-cpu_to_be16s(&E);
+E = cpu_to_be16(E);
@@
expression E;
@@
-cpu_to_be32s(&E);
+E = cpu_to_be32(E);
@@
expression E;
@@
-cpu_to_be64s(&E);
+E = cpu_to_be64(E);
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Tested-by: NJohn Snow <jsnow@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Taking the address of a field in a packed struct is a bad idea, because
it might not be actually aligned enough for that pointer type (and
thus cause a crash on dereference on some host architectures). Newer
versions of clang warn about this. Avoid the bug by not using the
"modify in place" byte swapping functions.

There are a few places where the in-place swap function is
used on something other than a packed struct field; we convert
those anyway, for consistency.

This patch was produced with the following spatch script:

@@
expression E;
@@
-be16_to_cpus(&E);
+E = be16_to_cpu(E);
@@
expression E;
@@
-be32_to_cpus(&E);
+E = be32_to_cpu(E);
@@
expression E;
@@
-be64_to_cpus(&E);
+E = be64_to_cpu(E);
@@
expression E;
@@
-cpu_to_be16s(&E);
+E = cpu_to_be16(E);
@@
expression E;
@@
-cpu_to_be32s(&E);
+E = cpu_to_be32(E);
@@
expression E;
@@
-cpu_to_be64s(&E);
+E = cpu_to_be64(E);
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Tested-by: NJohn Snow <jsnow@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Taking the address of a field in a packed struct is a bad idea, because
it might not be actually aligned enough for that pointer type (and
thus cause a crash on dereference on some host architectures). Newer
versions of clang warn about this. Avoid the bug by not using the
"modify in place" byte swapping functions.

There are a few places where the in-place swap function is
used on something other than a packed struct field; we convert
those anyway, for consistency.

This patch was produced with the following spatch script
(and hand-editing to fold a few resulting overlength lines):

@@
expression E;
@@
-be16_to_cpus(&E);
+E = be16_to_cpu(E);
@@
expression E;
@@
-be32_to_cpus(&E);
+E = be32_to_cpu(E);
@@
expression E;
@@
-be64_to_cpus(&E);
+E = be64_to_cpu(E);
@@
expression E;
@@
-cpu_to_be16s(&E);
+E = cpu_to_be16(E);
@@
expression E;
@@
-cpu_to_be32s(&E);
+E = cpu_to_be32(E);
@@
expression E;
@@
-cpu_to_be64s(&E);
+E = cpu_to_be64(E);
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Tested-by: NJohn Snow <jsnow@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Use %zu instead of %zd for unsigned numbers.

This fixes two error messages from the LSTM static code analyzer:

    This argument should be of type 'ssize_t' but is of type 'unsigned long'
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Signed-off-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

When using the vvfat driver with a directory that contains too many files,
QEMU currently crashes. This can be triggered like this for example:

 mkdir /tmp/vvfattest
 cd /tmp/vvfattest
 for ((x=0;x<=513;x++)); do mkdir $x; done
 qemu-system-x86_64 -drive \
   file.driver=vvfat,file.dir=.,read-only=on,media=cdrom

Seems like read_directory() is changing the mapping->path variable. Make
sure we use the right pointer instead.
Signed-off-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Only use divdeu insn with Power7 and later.

# gpg: Signature made Sun 04 Nov 2018 10:05:50 GMT
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-softfloat-20181104:
  softfloat: Don't execute divdeu without power7
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

The divdeu instruction was added to ISA 2.06 (Power7).
Exclude this block from older cpus.

Fixes: 27ae5109 (softfloat: Specialize udiv_qrnnd for ppc64)
Reported-by: NLaurent Vivier <laurent@vivier.eu>
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>

target-arm queue:
 * microbit: Add the UART to our nRF51 SoC model
 * Add a virtual Xilinx Versal board "xlnx-versal-virt"
 * hw/arm/virt: Set VIRT_COMPAT_3_0 compat
 * MAINTAINERS: Remove bouncing email in ARM ACPI
 * strongarm: mask off high[31:28] bits from dir and state registers
 * target/arm: Conditionalize some asserts on aarch32 support
 * hw/arm/xilinx_zynq: Use the ARRAY_SIZE macro

# gpg: Signature made Fri 02 Nov 2018 17:14:43 GMT
# gpg:                using RSA key 3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20181102:
  hw/arm: versal: Add a virtual Xilinx Versal board
  hw/arm: versal: Add a model of Xilinx Versal SoC
  target/arm: Conditionalize some asserts on aarch32 support
  hw/arm/xilinx_zynq: Use the ARRAY_SIZE macro
  strongarm: mask off high[31:28] bits from dir and state registers
  MAINTAINERS: Remove bouncing email in ARM ACPI
  tests/boot-serial-test: Add microbit board testcase
  hw/arm/nrf51_soc: Connect UART to nRF51 SoC
  hw/char: Implement nRF51 SoC UART
  hw/arm/virt: Set VIRT_COMPAT_3_0 compat
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Add a virtual Xilinx Versal board.

This board is based on the Xilinx Versal SoC. The exact
details of what peripherals are attached to this board
will remain in control of QEMU. QEMU will generate an
FDT on the fly for Linux and other software to auto-discover
peripherals.
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20181102131913.1535-3-edgar.iglesias@xilinx.com
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Add a model of Xilinx Versal SoC.
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 20181102131913.1535-2-edgar.iglesias@xilinx.com
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

When populating id registers from kvm, on a host that doesn't support
aarch32 mode at all, neither arm_div nor jazelle will be supported either.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NAlex Bennée <alex.bennee@linaro.org>
Tested-by: NAlex Bennée <alex.bennee@linaro.org>
Message-id: 20181102102025.3546-1-richard.henderson@linaro.org
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: NAlistair Francis <alistair.francis@wdc.com>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

The high[31:28] bits of 'direction' and 'state' registers of
SA-1100/SA-1110 device are reserved. Setting them may lead to
OOB 's->handler[]' array access issue. Mask off [31:28] bits to
avoid it.
Reported-by: NMoguofang <moguofang@huawei.com>
Signed-off-by: NPrasad J Pandit <pjp@fedoraproject.org>
Message-id: 20181030114635.31232-1-ppandit@redhat.com
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Shannon Zhao's email at Huawei is bouncing: remove it.

    X-Failed-Recipients: zhaoshenglong@huawei.com
    ** Address not found **
    Your message wasn't delivered to zhaoshenglong@huawei.com because the address couldn't be found, or is unable to receive mail.

Note that the section still contains his personal email (see e59f13d7).
Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: NShannon Zhao <shannon.zhaosl@gmail.com>
Message-id: 20181029195931.8747-1-philmd@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

New mini-kernel test for nRF51 SoC UART.
Signed-off-by: NJulia Suvorova <jusual@mail.ru>
Acked-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Wire up nRF51 UART in the corresponding SoC.
Signed-off-by: NJulia Suvorova <jusual@mail.ru>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: NAlistair Francis <alistair.francis@wdc.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Not implemented: CTS/NCTS, PSEL*.
Signed-off-by: NJulia Suvorova <jusual@mail.ru>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

We are missing the VIRT_COMPAT_3_0 definition and setting.
Let's add them.
Signed-off-by: NEric Auger <eric.auger@redhat.com>
Reviewed-by: NAndrew Jones <drjones@redhat.com>
Message-id: 20181024085602.16611-1-eric.auger@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

RISC-V Patches for the 3.1 Soft Freeze, Part 2

This tag contains a few simple patches that I'd like to target for the
QEMU soft freeze.  There's only one code change: a fix to our PMP
implementation that avoids an internal truncation while computing a
partial PMP read.

I also have two updates to the MAINTAINERS file: one to add Alistair as
a RISC-V maintainer, and one to add our newly created mailing list.

# gpg: Signature made Tue 30 Oct 2018 18:17:17 GMT
# gpg:                using RSA key EF4CA1502CCBAB41
# gpg: Good signature from "Palmer Dabbelt <palmer@dabbelt.com>"
# gpg:                 aka "Palmer Dabbelt <palmer@sifive.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 00CE 76D1 8349 60DF CE88  6DF8 EF4C A150 2CCB AB41

* remotes/riscv/tags/riscv-for-master-3.1-sf1:
  Add qemu-riscv@nongnu.org as the RISC-V list
  Add Alistair as a RISC-V Maintainer
  target/riscv/pmp.c: pmpcfg_csr_read returns bogus value on RV64
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Fix illegal instruction exception number

# gpg: Signature made Thu 01 Nov 2018 11:34:49 GMT
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier/tags/m68k-for-3.1-pull-request:
  target/m68k: use EXCP_ILLEGAL instead of EXCP_UNSUPPORTED
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

- add websocket support
- socket: make 'fd' incompatible with 'reconnect'
- fix a websocket leak
- unrelated editorconfig patch that missed -trivial (included for
  convenience)
- v2: fix commit author field

# gpg: Signature made Thu 01 Nov 2018 08:23:39 GMT
# gpg:                using RSA key DAE8E10975969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>"
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* remotes/elmarco/tags/chrdev-pull-request:
  editorconfig: set emacs mode
  tests/test-char: Check websocket chardev functionality
  chardev: Add websocket support
  chardev/char-socket: Function headers refactoring
  char-socket: make 'fd' incompatible with 'reconnect'
  char-socket: correctly set has_reconnect when parsing QemuOpts
  websock: fix handshake leak
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Minor migration fixes 2018-10-31

# gpg: Signature made Wed 31 Oct 2018 16:55:40 GMT
# gpg:                using RSA key 0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>"
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-migration-20181031a:
  migration: avoid segmentfault when take a snapshot of a VM which being migrated
  qapi: Fix COLOStatus and query-colo-status since version
  COLO: Fix Colo doc secondeary should be secondary
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Updates to decodetree.py for risc-v.

# gpg: Signature made Wed 31 Oct 2018 16:52:07 GMT
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-dt-20181031:
  decodetree: Allow multiple input files
  decodetree: Remove "insn" argument from trans_* expanders
  decodetree: Add !extern flag to argument sets
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

qemu-ga patch queue for soft-freeze

* support for --retry-path option for recovering from communication
  path failures
* support for serial/device name in guest-get-fsinfo for linux/w32
* support for freezing individual mount points in guest-fsfreeze-*
* fixes for unicode paths on w32, not-present vcpus in guest-get-vcpus,
  buffer overflow in guest-get-fsinfo for w32, and other minor fixes

v3:
* remove redundant check for --static in configure
* correct authorship on "qga-win: add debugging information"

v2:
* set libudev=off in configure for static builds

# gpg: Signature made Wed 31 Oct 2018 14:13:58 GMT
# gpg:                using RSA key 3353C9CEF108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg:                 aka "Michael Roth <mdroth@utexas.edu>"
# gpg:                 aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D  3FA0 3353 C9CE F108 B584

* remotes/mdroth/tags/qga-pull-2018-10-30-v3-tag: (24 commits)
  qga-win: changing --retry-path option behavior
  qga-win: report specific error when failing to open channel
  qga-win: install service with --retry-path set by default
  qga: add --retry-path option for re-initializing channel on failure
  qga: move w32 service handling out of run_agent()
  qga: hang GAConfig/socket_activation off of GAState global
  qga: group agent init/cleanup init separate routines
  qga: fix an off-by-one issue
  qga-win: demystify namespace stripping
  qga-win: return disk device in guest-get-fsinfo
  qga-win: handle multi-disk volumes
  qga-win: refactor disk info
  qga-win: report disk serial number
  qga-win: refactor disk properties (bus)
  qga-win: add debugging information
  build: rename CONFIG_QGA_NTDDDISK to CONFIG_QGA_NTDDSCSI
  qga-win: fsinfo: pci-info: allow partial info
  qga-win: prevent crash when executing fsinfo command
  qga: linux: return disk device in guest-get-fsinfo
  qga: linux: report disk serial number
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>