This will avoid needing forward declarations in following patches.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
TEST BLOCK was likely once used to execute basic memory
tests, but nowadays it's just a (slow) way to clear a page.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1495128400-23759-1-git-send-email-thuth@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This matches the qbus_set_hotplug_handler in realize, and it releases
the final reference to the embedded VirtIODevice so that it is
properly finalized.
A use-after-free is fixed with this patch, indirectly:
virtio_device_instance_finalize wasn't called at hot-unplug, and the
vdev->listener would be a dangling pointer in the global and the per
address space listener list. See also RHBZ 1449031.
Cc: qemu-stable@nongnu.org
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170518102808.30046-1-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It really only plays with the dispatchers, so the parameter list does
not need that complexity. This helps for readability at least.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1494838260-30439-2-git-send-email-peterx@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Move to modern errp scheme from just LOGging errors.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170526110913.89098-1-vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There a lot of calls of these functions, which already have errp, which
they are filling themselves. On the other hand, nbd_wr_syncv has errp
parameter too, so it would be great to connect them.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170516094533.6160-5-vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Will be used in following patch to provide actual error message in
some cases.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170516094533.6160-4-vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
functions read_sync, drop_sync, write_sync, and also
nbd_negotiate_write, nbd_negotiate_read, nbd_negotiate_drop_sync
returns number of processed bytes. But what this number can be,
except requested number of bytes?
Actually, underlying nbd_wr_syncv function returns a value >= 0 and
!= requested_bytes only on eof on read operation. So, firstly, it is
impossible on write (let's add an assert) and on read it actually
means, that communication is broken (except nbd_receive_reply, see
below).
Most of callers operate like this:
if (func(..., size) != size) {
/* error path */
}
, i.e.:
1. They are not interested in partial success
2. Extra duplications in code (especially bad are duplications of
magic numbers)
3. User doesn't see actual error message, as return code is lost.
(this patch doesn't fix this point, but it makes fixing easier)
Several callers handles ret >= 0 and != requested-size separately, by
just returning EINVAL in this case. This patch makes read_sync and
friends return EINVAL in this case, so final behavior is the same.
And only one caller - nbd_receive_reply() does something not so
obvious. It returns EINVAL for ret > 0 and != requested-size, like
previous group, but for ret == 0 it returns 0. The only caller of
nbd_receive_reply() - nbd_read_reply_entry() handles ret == 0 in the
same way as ret < 0, so for now it doesn't matter. However, in
following commits error path handling will be improved and we'll need
to distinguish success from fail in this case too. So, this patch adds
separate helper for this case - read_sync_eof.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170516094533.6160-3-vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
nbd_wr_syncv is called either from coroutine or from client negotiation
code, when socket is in blocking mode. So, -EAGAIN is impossible.
Furthermore, EAGAIN is confusing, as, what to read/write again? With
EAGAIN as a return code we don't know how much data is already
read or written by the function, so in case of EAGAIN the whole
communication is broken.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170516094533.6160-2-vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Assert that the return value is not an error. This issue was found by
Coverity.
CID: 1374831
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
CC: groug@kaod.org
CC: pbonzini@redhat.com
CC: Eric Blake <eblake@redhat.com>
Message-Id: <1494356693-13190-2-git-send-email-sstabellini@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It's possible that one device kept its irqfd/virq there even when
MSI/MSIX was disabled globally for that device. One example is
virtio-net-pci (see commit f1d0f15a6 and virtio_pci_vq_vector_mask()).
It is used as a fast path to avoid allocate/release irqfd/virq
frequently when guest enables/disables MSIX.
However, this fast path brought a problem to msi_route_list, that the
device MSIRouteEntry is still dangling there even if MSIX disabled -
then we cannot know which message to fetch, even if we can, the messages
are meaningless. In this case, we can just simply ignore this entry.
It's safe, since when MSIX is enabled again, we'll rebuild them no
matter what.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1448813
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1494309644-18743-4-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Meanwhile, abstract a function to detect msix masked bit.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1494309644-18743-3-git-send-email-peterx@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It'll be nice to know which virq belongs to which device/vector when
adding msi routes, so adding two more parameters for the add trace.
Meanwhile, releasing virq has no tracing before. Add one for it.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1494309644-18743-2-git-send-email-peterx@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It tests the accuracy of rtc periodic timer which is recently
improved & fixed by commit 7ffcb539a3 ("mc146818rtc: precisely count
the clock for periodic timer", 2017-05-19).
Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20170527025301.23499-1-xiaoguangrong@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Introduce a function, rtc_policy_slew_deliver_irq(), which delivers
irq if LOST_TICK_POLICY_SLEW is used, as which is only supported on
x86, other platforms call it will trigger a assert
After that, we can move the x86 specific code to the common place
Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20170510083259.3900-6-xiaoguangrong@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If the code purely depends on LOST_TICK_POLICY_SLEW, we can simply
drop '#ifdef TARGET_I386' as only x86 can enable this tick policy
Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20170510083259.3900-5-xiaoguangrong@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Any tick policy specified on other platforms rather on TARGET_I386
will fall back to LOST_TICK_POLICY_DISCARD silently, this patch makes
sure only TARGET_I386 can enable LOST_TICK_POLICY_SLEW
After that, we can enable LOST_TICK_POLICY_SLEW in the common code
which need not use '#ifdef TARGET_I386' to make these code be x86
specific anymore
Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20170510083259.3900-4-xiaoguangrong@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There are two issues in current code:
1) If the period is changed by re-configuring RegA, the coalesced
irq will be scaled to reflect the new period, however, it
calculates the new interrupt number like this:
s->irq_coalesced = (s->irq_coalesced * s->period) / period;
There are some clocks will be lost if they are not enough to
be squeezed to a single new period that will cause the VM clock
slower
In order to fix the issue, we calculate the interrupt window
based on the precise clock rather than period, then the clocks
lost during period is scaled can be compensated properly
2) If periodic_timer_update() is called due to RegA reconfiguration,
i.e, the period is updated, current time is not the start point
for the next periodic timer, instead, which should start from the
last interrupt, otherwise, the clock in VM will become slow
This patch takes the clocks from last interrupt to current clock
into account and compensates the clocks for the next interrupt,
especially if a complete interrupt was lost in this window, the
time can be caught up by LOST_TICK_POLICY_SLEW
Signed-off-by: Tai Yunfang <yunfangtai@tencent.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20170510083259.3900-3-xiaoguangrong@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently, the timer is updated whenever RegA or RegB is written
even if the periodic timer related configuration is not changed
This patch optimizes it slightly to make the update happen only
if its period or enable-status is changed, also later patches are
depend on this optimization
Signed-off-by: Xiao Guangrong <xiaoguangrong@tencent.com>
Message-Id: <20170510083259.3900-2-xiaoguangrong@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Accumulated patches for ppc targets and the pseries machine type.
The big thing in this batch is a start on a substantial cleanup of the
pseries hotplug mechanisms, which were pretty confusing. For now
these shouldn't cause substantial behavioural changes, but I am hoping
these lead to clearer code and eventually to fixes for the bugs we
have in hotplug handling, particularly when hotplug and migration are
combined.
The remaining patches are mostly bugfixes.
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.10-20170606' into staging
ppc patch queue 2017-06-06
Accumulated patches for ppc targets and the pseries machine type.
The big thing in this batch is a start on a substantial cleanup of the
pseries hotplug mechanisms, which were pretty confusing. For now
these shouldn't cause substantial behavioural changes, but I am hoping
these lead to clearer code and eventually to fixes for the bugs we
have in hotplug handling, particularly when hotplug and migration are
combined.
The remaining patches are mostly bugfixes.
# gpg: Signature made Tue 06 Jun 2017 03:48:50 BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-2.10-20170606:
spapr: Remove some non-useful properties on DRC objects
spapr: Eliminate spapr_drc_get_type_str()
spapr: Move configure-connector state into DRC
spapr: Clean up spapr_dr_connector_by_*()
spapr: Introduce DRC subclasses
spapr/drc: don't migrate DRC of cold-plugged CPUs and LMBs
spapr: Allow boot from vhost-*-scsi backends
ppc/pnv: check the return value of fdt_setprop()
spapr_nvram: Check return value from blk_getlength()
target/ppc: Fixup set_spr error in h_register_process_table
target-ppc: Fix openpic timer read register offset
spapr: Make DRC get_index and get_type methods into plain functions
spapr: Abolish DRC set_configured method
spapr: Abolish DRC get_fdt method
spapr: Move DRC RTAS calls into spapr_drc.c
migration: Mark CPU states dirty before incoming migration/loadvm
migration: remove register_savevm()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Xtensa cores may have registers of types/sizes not supported by the
gdbstub accessors. Ignore writes to such registers and return zero on
read, but always return correct register size, so that gdb on the other
side is able to access all registers in the packet holding unsupported
registers in the middle. This fixes gdb interaction with cores that have
vector/custom TIE registers.
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
In semihosting mode QEMU allows guest to read and write host file
descriptors directly, including descriptors 0..2, a.k.a. stdin, stdout
and stderr. Sometimes it's desirable to have semihosting console
controlled by -serial option, e.g. to connect it to network.
Add semihosting console to xtensa-semi.c, open it in the 'sim' machine
in the presence of -serial option and direct stdout and stderr to it
when it's present.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Return value of read/write simcalls is not calculated correctly in case
of operations crossing page boundary and in case of short reads/writes.
Read and write simcalls should return the size of data actually
read/written or -1 in case of error.
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Read and write simcalls map physical memory to access I/O buffers, but
'read' simcall need to map it for writing and 'write' simcall need to
map it for reading, i.e. the opposite of what they do now. Fix that.
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Merge remote-tracking branch 'remotes/ehabkost/tags/x86-and-machine-pull-request' into staging
x86 and machine queue, 2017-06-05
# gpg: Signature made Mon 05 Jun 2017 19:58:01 BST
# gpg: using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-and-machine-pull-request:
scripts: Test script to look for -device crashes
qemu.py: Add QEMUMachine.exitcode() method
qemu.py: Don't set _popen=None on error/shutdown
spapr: cleanup spapr_fixup_cpu_numa_dt() usage
numa: move numa_node from CPUState into target specific classes
numa: make hmp 'info numa' fetch numa nodes from qmp_query_cpus() result
numa: make sure that all cpus have has_node_id set if numa is enabled
numa: move default mapping init to machine
numa: consolidate cpu_preplug fixups/checks for pc/arm/spapr
pc: Use "min-[x]level" on compat_props
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Currently, under z/VM on a 0x2827, QEMU will detect a 0x2828 if no
IBC value is provided. QEMU will simply take the last model of that HW
generation, which happens to be the BC version.
Let's improve our search for that case by selecting the latest CPU
definition that matches the CPU type. This for example will avoid
detecting an z13 as a z13s.
We might still detect a GA2 version on a GA1 system, but as we don't
have further information at hand, there isn't too much we can do about
it. The alternative of always presenting the oldest GA is not backward
compatible, e.g:
You're running on 0x2827 GA2.
Old QEMU version indicated "0x2828 GA1 == 0x2827 GA2". After you updated
QEMU, you suddenly detect "0x2827 GA1". You're previous libvirt guest
might suddenly refuse to run.
In the end presenting a newer GA level does not matter because:
1: All GAX models share the same base feature set. A GAX++ might
support "more features".
2: Without an IBC, the guest can't detect the GA version.
If we have no IBC (esp. unblocked_ibc == 0), the IBC we will present
to the guest in read_SCP_info() will be 0. The guest will not know
which GA version it has. The problem of missing IBC propagates.
If we don't have a feature of the GA++ version, also our guest won't
have it. So in summary, the guest also has no idea of its GA version.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170531193434.6918-3-david@redhat.com>
Acked-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[improve patch description by reusing mailing list discussion]
Let's also properly forward that bit. It should always be set. I
verified it under z/VM, it seems to be always set there. For now,
zKVM guests never get that bit set when the CPU model is active.
The PoP mentiones, that z800 + z900 (HW generation 7) always set this
bit to 0, so let's take care of that.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170531193434.6918-2-david@redhat.com>
Acked-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
The docker-run-test-build@debian-s390x-cross target fails with:
strip --strip-unneeded s390-ccw.elf -o s390-ccw.img
strip: Unable to recognise the format of the input file `s390-ccw.elf'
The configure script defines a STRIP makefile variable whose default
value is ${cross_prefix}strip. Let's use it.
We default to using the non-prefixed strip command in case --enable-debug
or --disable-strip was passed to configure during a regular build.
Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <149623617700.4947.12490877660892961664.stgit@bahia.lan>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
MIDA (modified indirect data addressing) is an optional facility, and
we (currently) don't support it. Let's post an operand exception if
the guest tries to set it in the orb and a channel program check
if it is set in a ccw, as specified in the Principles of Operation.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Prior to the virtio-ccw-2.7 machine (and commit 2a79eb1a), our virtio
devices residing under the virtual-css bus do not have qdev_path based
migration stream identifiers (because their qdev_path is NULL). The ids
are instead generated when the device is registered as a composition of
the so called idstr, which takes the vmsd name as its value, and an
instance_id, which is which is calculated as a maximal instance_id
registered with the same idstr plus one, or zero (if none was registered
previously).
That means, under certain circumstances, one device might try, and even
succeed, to load the state of a different device. This can lead to
trouble.
Let us fail the migration if the above problem is detected during load.
How to reproduce the problem:
1) start qemu-system-s390x making sure you have the following devices
defined on your command line:
-device virtio-rng-ccw,id=rng1,devno=fe.0.0001
-device virtio-rng-ccw,id=rng2,devno=fe.0.0002
2) detach the devices and reattach in reverse order using the monitor:
(qemu) device_del rng1
(qemu) device_del rng2
(qemu) device_add virtio-rng-ccw,id=rng2,devno=fe.0.0002
(qemu) device_add virtio-rng-ccw,id=rng1,devno=fe.0.0001
3) save the state of the vm into a temporary file and quit QEMU:
(qemu) migrate "exec:gzip -c > /tmp/tmp_vmstate.gz"
(qemu) q
4) use your command line from step 1 with
-incoming "exec:gzip -c -d /tmp/tmp_vmstate.gz"
appended to reproduce the problem (while trying to to load the saved vm)
CC: qemu-stable@nongnu.org
Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Message-Id: <20170518111405.56947-1-pasic@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Currently objects specified on the command-line are only partially
cleaned up when 'object_del' is issued in either HMP or QMP: the
object itself is fully finalized, but the QemuOpts are not removed.
This results in the following behavior:
x86_64-softmmu/qemu-system-x86_64 -monitor stdio \
-object memory-backend-ram,id=ram1,size=256M
QEMU 2.7.91 monitor - type 'help' for more information
(qemu) object_del ram1
(qemu) object_del ram1
object 'ram1' not found
(qemu) object_add memory-backend-ram,id=ram1,size=256M
Duplicate ID 'ram1' for object
Try "help object_add" for more information
which can be an issue for use-cases like memory hotplug.
This happens on the HMP side because hmp_object_add() attempts to
create a temporary QemuOpts entry with ID 'ram1', which ends up
conflicting with the command-line-created entry, since it was never
cleaned up during the previous hmp_object_del() call.
We address this by adding a check in user_creatable_del(), which
is called by both qmp_object_del() and hmp_object_del() to handle
the actual object cleanup, to determine whether an option group entry
matching the object's ID is present and removing it if it is.
Note that qmp_object_add() never attempts to create a temporary
QemuOpts entry, so it does not encounter the duplicate ID error,
which is why this isn't generally visible in libvirt.
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Daniel Berrange <berrange@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1496531612-22166-3-git-send-email-mdroth@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
check-qom-proplist originally added tests for verifying that
object-creation helpers object_new_with_{props,propv} behaved in
similar fashion to the "traditional" method involving setting each
individual property separately after object creation rather than
via a single call.
Another similar "helper" for creating Objects exists in the form of
objects specified via -object command-line parameters. By that
rationale, we extend check-qom-proplist to include similar checks
for command-line-created objects by employing the same
qemu_opts_parse()-based parsing the vl.c employs.
This parser has a side-effect of parsing the object's options into
a QemuOpt structure and registering this in the global QemuOptsList
using the Object's ID. This can conflict with future Object instances
that attempt to use the same ID if we don't ensure this is cleaned
up as part of Object finalization, so we include a FIXME stub to test
for this case, which will then be resolved in a subsequent patch.
Suggested-by: Daniel Berrange <berrange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Daniel Berrange <berrange@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1496531612-22166-2-git-send-email-mdroth@linux.vnet.ibm.com>
[Comment formatting tidied up]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1494327362-30727-3-git-send-email-armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Say "SCSI except scsi-generic" instead of "scsi-disk", because
scsi-disk could mean either scsi-disk.c (which is correct) or device
model scsi-disk (which would be incorrect).
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1494327362-30727-2-git-send-email-armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
* 'connector_type' is easily derived from the 'index' property, so there's
no point to it (it's also implicit in the QOM type of the DRC)
* 'isolation-state', 'indicator-state' and 'allocation-state' are
part of the transaction between qemu and guest during PAPR hotplug
operations, and outside tools really have no business looking at it
(especially not changing, and these were RW properties)
* 'entity-sense' is basically just a weird PAPR encoding of whether there
is a device connected to this DRC
Strictly speaking removing these properties is breaking the qemu interface.
However, I'm pretty sure no management tools have ever used these. For
debugging there are better alternatives. Therefore, I think removing these
broken interfaces is the better option.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This function was used in generating the device tree. However, now that
we have different QOM types for different DRC types we can easily store
the information we need in the class structure and avoid this specialized
lookup function.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Currently the sPAPRMachineState contains a list of sPAPRConfigureConnector
structures which store intermediate state for the ibm,configure-connector
RTAS call.
This was an attempt to separate this state from the core of the DRC state.
However the configure connector process is intimately tied to the DRC
model, so there's really no point trying to have two levels of interface
here.
Moving the configure-connector state into its corresponding DRC allows
removal of a number of helpers for maintaining the anciliary list.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
* Change names to something less ludicrously verbose
* Now that we have QOM subclasses for the different DRC types, use a QOM
typename instead of a PAPR type value parameter
The latter allows removal of the get_type_shift() helper.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Currently we only have a single QOM type for all DRCs, but lots of
places where we switch behaviour based on the DRC's PAPR defined type.
This is a poor use of our existing type system.
So, instead create QOM subclasses for each PAPR defined DRC type. We
also introduce intermediate subclasses for physical and logical DRCs,
a division which will be useful later on.
Instead of being stored in the DRC object itself, the PAPR type is now
stored in the class structure. There are still many places where we
switch directly on the PAPR type value, but this at least provides the
basis to start to remove those.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
As explained in commit 5c0139a8c2 ("spapr: fix default DRC state for
coldplugged LMBs"), guests expect cold-plugged LMBs to be pre-allocated
and unisolated. The same goes for cold-plugged CPUs.
While here, let's convert g_assert(false) to the better self documenting
g_assert_not_reached().
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The current implementation of spapr_get_fw_dev_path() doesn't take into
consideration vhost-*-scsi devices. This makes said devices unbootable
on PPC as SLOF is unable to work out the path to scan boot disks.
This makes VMs bootable on spapr when using vhost-*-scsi by implementing
a disk path for VHostSCSICommon (which currently includes both
vhost-user-scsi and vhost-scsi).
Signed-off-by: Felipe Franciosi <felipe@nutanix.com>
Signed-off-by: Mike Cui <cui@nutanix.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The blk_getlength() function can return an error value if the
image size cannot be determined. Check for this rather than
ploughing on and trying to g_malloc0() a negative number.
(Spotted by Coverity, CID 1288484.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
set_spr is used in the function h_register_process_table() to update the
LPCR_GTSE and LPCR_UPRT values based on the flags passed by the guest.
The set_spr function takes the last two arguments mask and value used to
mask and set the value of the spr respectively.
The current call site passes these arguments in the wrong order and thus
bot GTSE and UPRT will be set irrespective, which is obviously
incorrect.
Rearrange the function call so that these arguments are passed in the
correct order and the correct behaviour is exhibited.
It is worth noting that this wasn't detected earlier since these were
always both set in all cases where this H_CALL was made.
Fixes: 6de833070c ("target/ppc: Set UPRT and GTSE on all cpus in H_REGISTER_PROCESS_TABLE")
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
