Add support for trapping WFI and WFE instructions to the proper EL when
SCTLR/SCR/HCR settings apply.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
[PMM: removed unnecessary tweaking of syn_wfx() prototype;
use raise_exception();
don't trap on WFE (and add comment explaining why not);
remove unnecessary ARM_FEATURE checks;
trap to EL3, not EL1, if in S-EL0 and SCTLR check fires]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Just NOP the WFI instruction if we have work to do.
This doesn't make much difference currently (though it does avoid
jumping out to the top level loop and immediately restarting),
but the distinction between "halt" and "don't halt" will become
more important when the decision to halt requires us to trap
to a higher exception level instead.
Suggested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Deleting the now-unused ARM_TBFLAG_CPACR_FPEN left a gap in the
bit usage; move the following ARM_TBFLAG_XSCALE_CPAR and
ARM_TBFLAG_NS_SHIFT down 3 bits to fill the gap.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Extend the ARM disassemble context to take a target exception EL instead of a
boolean enable. This change reverses the polarity of the check making a value
of 0 indicate floating point enabled (no exception).
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
[PMM: Use a common TB flag field for AArch32 and AArch64;
CPTR_EL2 exists in v7; CPTR_EL2 should trap for EL2 accesses;
CPTR_EL2 should not trap for secure accesses; CPTR_EL3
should trap for EL3 accesses; CPACR traps for secure
accesses should trap to EL3 if EL3 is AArch32]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Currently we keep the TB flags PSTATE_SS and SS_ACTIVE in different
bit positions for AArch64 and AArch32. Replace these separate
definitions with a single common flag in the upper part of the
flags word.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Adds CPTR_EL2/3 system registers definitions and access function.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
[PMM: merge CPTR_EL2 and HCPTR definitions into a single
def using STATE_BOTH;
don't use readfn/writefn to implement RAZ/WI registers;
don't use accessfn for the no-EL2 CPTR_EL2;
fix cpacr_access logic to catch EL2 accesses to CPACR being
trapped to EL3;
use new CP_ACCESS_TRAP_EL[23] rather than setting
exception.target_el directly]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Some coprocessor access functions will need to indicate that the
instruction should trap to EL2 or EL3 rather than the default
target exception level; add corresponding CPAccessResult enum
entries and handling code.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Updated the interrupt handling to utilize and report through the target EL
exception field. This includes consolidating and cleaning up code where
needed. Target EL is now calculated once in arm_cpu_exec_interrupt() and
do_interrupt was updated to use the target_el exception field. The
necessary code from arm_excp_target_el() was merged in where needed and the
function removed.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1429722561-12651-4-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Rather than making every caller of raise_exception set the
syndrome and target EL by hand, make these arguments to
raise_exception() and have that do the job.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Set the exception target EL for MMU faults in tlb_fill.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Move the code which sets exception information out of
arm_cpu_handle_mmu_fault and into tlb_fill. tlb_fill
is the only caller which wants to raise_exception()
so it makes more sense for it to handle the whole of
the exception setup.
As part of this cleanup, move the user-mode-only
implementation function for the handle_mmu_fault CPU
method into cpu.c so we don't need to make it globally
visible, and rename the softmmu-only utility function
arm_cpu_handle_mmu_fault to arm_tlb_fill so it's clear
that it's not the same thing.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
If the SCTLR.UMA trap bit is set then attempts by EL0 to update
the PSTATE DAIF bits via "MSR DAIFSet, imm" and "MSR DAIFClr, imm"
instructions will raise an exception. We were failing to set
the syndrome information for this exception, which meant that
it would be reported as a repeat of whatever the previous
exception was. Set the correct syndrome information.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Updated the various helper routines to set the target EL as needed using a
dedicated function.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1429722561-12651-3-git-send-email-greg.bellows@linaro.org
[PMM: Also set target_el in fault cases in access_check_cp_reg()]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add a CPU state exception target EL field that will be used for communicating
the EL to which an exception should be routed.
Add a disassembly context field for tracking the EL3 architecture needed for
determining the target exception EL.
Add a target EL argument to the generic exception helper for callers to specify
the EL to which the exception should be routed. Extended the helper to set
the newly added CPU state exception target el.
Added a function for setting the target exception EL and updated calls to helpers
to call it.
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1429722561-12651-2-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Skip mm_time updates (in qxl device memory) in case the guest is stopped.
Guest isn't able to look anyway, and it causes problems with migration.
Also make sure the initial state for spice server is stopped.
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The spice server is polling on write, unless
SPICE_CHAR_DEVICE_NOTIFY_WRITABLE flag is set. In this case, qemu must
call spice_server_char_device_wakeup() when the frontend is writable.
Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When the virtio serial is writable, notify the chardev backend
with qemu_chr_accept_input().
Signed-off-by: Marc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The requirements described in this patch are implemented by "Add GDB
qAttached support".
This reverts commit 00e94dbc7f.
Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
With this patch QEMU handles qAttached request from gdb. When QEMU
replies 1, GDB sends a "detach" command at the end of a debugging
session otherwise GDB sends "kill".
The default value for qAttached is 1 on system emulation and 0 on user
emulation.
Based on original version by Fabien Chouteau.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This helper supports parsing of query packets with optional extensions.
The separator can be specified so that we can use it already for both
qqemu.sstep[=] and qSupported[:feature].
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
qOffsets has no additional optional parameters. So match the complete
string to avoid stumbling over possible future commands with identical
prefix.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Notable: Floating point registers and vector registers overlap,
so extra care is needed so that we end up with a consistent state
in all cases.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=y7nj
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20150528' into staging
A set of patches add support for vector registers on s390x.
Notable: Floating point registers and vector registers overlap,
so extra care is needed so that we end up with a consistent state
in all cases.
# gpg: Signature made Thu May 28 09:37:27 2015 BST using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
* remotes/cohuck/tags/s390x-20150528:
s390x: Enable vector processing capability
s390x: Migrate vector registers
s390x: Add vector registers to ELF dump
linux/elf.h update
s390x: Add vector registers to HMP output
s390x: gdb updates for vector registers
gdb-xml: Include XML for s390 vector registers
s390x: Store Additional Status SIGP order
s390x: Vector Register IOCTLs
s390x: Common access to floating point registers
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Version: GnuPG v1
iQEcBAABAgAGBQJVZZZPAAoJEJykq7OBq3PIlY8H/jssSf1iBbV6B8oySzcPpNyC
asTxOxwhkcydgVFzF3xy2H+YUJEfCyRLU4rGTvhIAdawjnCYQBWSyKDz4omWlJ4w
4gc3Cyw7ZOK1V0wTs21h071roC+vMJIODXfcO8JuYGtJzKrOLVrPILdLEkhl/uLN
YPLj89gvMcatF6hC3BUYkltBlp42fJIP+9Jhc9OBdxmAyGJFcUZPkyoKaF3FnhTT
cdE3n75uf3jAIuG14NT6WK8wbKjUX4OQ/alo/gg87fUHaVZduZnAAb1XozyJ/e5o
nuS9uKmuM/2QN/kb7As4cY3haRtAERO/bAiGhI5i2tahwn+o4uQ7ohfu7fC+RX0=
=bVyU
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into staging
# gpg: Signature made Wed May 27 11:02:55 2015 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/net-pull-request:
net/net: Record usage status of mac address
tap: Improve -netdev/netdev_add/-net/... tap error reporting
tap: Finish conversion of tap_open() to Error
tap-solaris: Convert tap_open() to Error
tap-bsd: Convert tap_open() to Error
tap-linux: Convert tap_open() to Error
tap: Permit incremental conversion of tap_open() to Error
tap: Convert launch_script() to Error
tap: Convert net_init_tap_one() to Error
tap: Convert tap_set_sndbuf() to Error
tap: Improve -netdev/netdev_add/-net/... bridge error reporting
tap: net_tap_fd_init() can't fail, drop dead error handling
net/dump: Improve -net/host_net_add dump error reporting
net: Improve -net nic error reporting
net: Permit incremental conversion of init functions to Error
net: Improve error message for -net hubport a bit
net: Change help text to list -netdev instead of -net by default
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Everything is finally in place, inform the kernel that user space
supports vector registers.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
When migrating a guest, be sure to include the vector registers.
The vector registers are defined in a subsection, similar to the
existing subsection for floating point registers. Since the
floating point registers are always present (and thus migrated),
we can skip them when performing the migration of the vector
registers which may or may not be present.
Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Create ELF notes for the vector registers where applicable, so that
their contents can be examined by utilities such as crash or readelf.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Sync with kernel elf.h updates to get s390x vector register definitions.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
There are mechanisms to dump registers via the qemu HMP interface,
such as the "info registers" command. Expand this output to dump
the new vector registers.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
gdb allows registers to be displayed/modified, and is being updated
to account for the new vector registers. Mirror these changes in
the gdb stub in qemu so that this can be performed when gdb is
attached to the qemu gdbserver.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Include the vector registers XML file that is provided by gdb,
and can be used by the qemu gdbserver interface.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Add handling for the Store Additional Status at Address order
that exists for the Signal Processor (SIGP) instruction.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Handle the actual syncing of the vector registers with kernel space,
via the get/put register IOCTLs.
The vector registers that were introduced with the z13 overlay
the existing floating point registers. FP registers 0-15 are
the high-halves of vector registers 0-15. Thus, remove the
freg fields and replace them with the equivalent vector field
to avoid errors in duplication. Moreover, synchronize either the
vector registers via kvm_sync_regs, or floating point registers
via the GET/SET FPU IOCTLs.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Provide a routine to access the correct floating point register,
to simplify future expansion.
Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Currently QEMU dynamically generates mac address for the NIC which
doesn't specify the mac address. But when we hotplug a NIC without
specifying mac address, the mac address will increase for the same NIC
along with hotplug and hot-unplug, and at last it will overflow. And if
we codeplug one NIC with mac address e.g. "52:54:00:12:34:56", then
hotplug one NIC without specifying mac address and the mac address of
the hotplugged NIC is duplicate of "52:54:00:12:34:56".
This patch add a mac_table to record the usage status and free the mac
address when the NIC is unrealized.
Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
When -netdev tap fails, it first reports a specific error, then a
generic one, like this:
$ qemu-system-x86_64 -netdev tap,id=foo
qemu-system-x86_64: -netdev tap,id=foo: could not configure /dev/net/tun: Operation not permitted
qemu-system-x86_64: -netdev tap,id=foo: Device 'tap' could not be initialized
With the command line, the messages go to stderr. In HMP, they go to
the monitor. In QMP, the second one becomes the error reply, and the
first one goes to stderr.
Convert net_init_tap() to Error. This suppresses the unwanted second
message, and makes the specific error the QMP error reply.
[Dropped duplicate "and" from error message as suggested by Eric Blake:
"ifname=, script=, downscript=, and vnet_hdr=, "
"queues=, and vhostfds= are invalid with helper="
--Stefan]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-16-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-15-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Fixes inappropriate use of syslog().
Not fixed: leaks on error paths, suspicious non-fatal errors. FIXMEs
added instead.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-14-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Fixes inappropriate use of stderr in monitor command handler.
While there, improve some of the messages a bit.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-13-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-12-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Convert the trivial ones immediately: tap-aix and tap-haiku.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-11-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Fixes inappropriate use of stderr in monitor command handler.
While there, improve the messages some.
[Fixed Error **err -> Error *err local variable that broke the build.
--Stefan]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-10-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
[Dropped %s from "tap: open vhost char device failed: %s" since
error_setg_errno() already prints a human-readable error string and
there is no format string argument.
--Stefan]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-9-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-8-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
When -netdev bridge fails, it first reports a specific error, then a
generic one, like this:
$ qemu-system-x86_64 -netdev bridge,id=foo
failed to launch bridge helper
qemu-system-x86_64: -netdev bridge,id=foo: Device 'bridge' could not be initialized
The first message goes to stderr. Wrong for HMP, because errors need
to go to the monitor there.
The second message goes to stderr for -netdev, to the monitor for HMP
netdev_add, and becomes the error reply for QMP netdev_add.
Convert net_bridge_run_helper() to Error, and propagate its errors
through net_init_bridge(). This ensures the error gets reported where
the user is, and suppresses the unwanted second message.
While there, improve the error messages a bit.
The above example becomes:
$ qemu-system-x86_64 -netdev bridge,id=foo
qemu-system-x86_64: -netdev bridge,id=foo: bridge helper failed
net_init_tap() also uses net_bridge_run_helper(). Propagate its
errors there as well. Improves reporting these errors with -netdev
tap & friends.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-7-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-6-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
When -net dump fails, it first reports a specific error, then a
generic one, like this:
$ qemu-system-x86_64 -net dump,id=foo,file=/eperm
qemu-system-x86_64: -net dump,id=foo,file=/eperm: -net dump: can't open /eperm
qemu-system-x86_64: -net dump,id=foo,file=/eperm: Device 'dump' could not be initialized
Convert net_init_tap() to Error. This suppresses the unwanted second
message.
Improve the error messages to include strerror(errno) where
appropriate.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-5-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
When -net nic fails, it first reports a specific error, then a generic
one, like this:
$ qemu-system-x86_64 -net nic,netdev=nonexistent
qemu-system-x86_64: -net nic,netdev=nonexistent: netdev 'nonexistent' not found
qemu-system-x86_64: -net nic,netdev=nonexistent: Device 'nic' could not be initialized
Convert net_init_nic() to Error to get rid of the unwanted second
error message.
While there, tidy up an Overcapitalized Error Message.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-4-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Error reporting for netdev_add is broken: the net_client_init_fun[]
report the actual errors with (at best) error_report(), and their
caller net_client_init1() makes up a generic error on top.
For command line and HMP, this produces an mildly ugly error cascade.
In QMP, the actual errors go to stderr, and the generic error becomes
the command's error reply.
To fix this, we need to convert the net_client_init_fun[] to Error.
To permit fixing them one by one, add an Error ** parameter to the
net_client_init_fun[]. If the call fails without returning an Error,
make up the same generic Error as before. But if it returns one, use
that instead. Since none of them does so far, no functional change.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-3-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
