Not using snapshot has the benefit of automatically persisting useful
test harnesses, such as docker images and ccache database. Although it
will lose some cleanness, it is imaginably useful for patchew.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20180712012829.20231-2-famz@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
An aio_notify() pairs with an aio_notify_accept(). The former should
happen in the main thread or a vCPU thread, and the latter should be
done in the IOThread.
There is one rare case that the main thread or vCPU thread may "steal"
the aio_notify() event just raised by itself, in bdrv_set_aio_context()
[1]. The sequence is like this:
main thread IO Thread
===============================================================
bdrv_drained_begin()
aio_disable_external(ctx)
aio_poll(ctx, true)
ctx->notify_me += 2
...
bdrv_drained_end()
...
aio_notify()
...
bdrv_set_aio_context()
aio_poll(ctx, false)
[1] aio_notify_accept(ctx)
ppoll() /* Hang! */
[1] is problematic. It will clear the ctx->notifier event so that
the blocked ppoll() will not return.
(For the curious, this bug was noticed when booting a number of VMs
simultaneously in RHV. One or two of the VMs will hit this race
condition, making the VIRTIO device unresponsive to I/O commands. When
it hangs, Seabios is busy waiting for a read request to complete (read
MBR), right after initializing the virtio-blk-pci device, using 100%
guest CPU. See also https://bugzilla.redhat.com/show_bug.cgi?id=1562750
for the original bug analysis.)
aio_notify() only injects an event when ctx->notify_me is set,
correspondingly aio_notify_accept() is only useful when ctx->notify_me
_was_ set. Move the call to it into the "blocking" branch. This will
effectively skip [1] and fix the hang.
Furthermore, blocking aio_poll is only allowed on home thread
(in_aio_context_home_thread), because otherwise two blocking
aio_poll()'s can steal each other's ctx->notifier event and cause
hanging just like described above.
Cc: qemu-stable@nongnu.org
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20180809132259.18402-3-famz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
The same logic exists in fd polling. This change is especially important
to avoid busy loop once we limit aio_notify_accept() to blocking
aio_poll().
Cc: qemu-stable@nongnu.org
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20180809132259.18402-2-famz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
bdrv_io_plug/bdrv_io_unplug take care of keeping a nesting count,
so change s->plugged to just a bool.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20180813144320.12382-2-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
It is wrong to leave this field as 1, as nvme_close() called in the
error handling code in nvme_file_open() will use it and try to free
s->queues again.
Another problem is the cleaning ups are duplicated between the fail*
labels of nvme_init() and nvme_file_open(), which calls nvme_close().
A third problem is nvme_close() misses g_free() and
event_notifier_cleanup().
Fix all of them.
Cc: qemu-stable@nongnu.org
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20180712025420.4932-1-famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Similar to 79f24568e5, this fixes the following warnings:
CHK version_gen.h
LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
BISON dtc-parser.tab.c
make[1]: bison: Command not found
LEX dtc-lexer.lex.c
make[1]: flex: Command not found
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180628153535.1411-5-f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
If KVM is not available, then use the 'max' cpu.
This fixes:
ERROR:root:Log:
ERROR:root:qemu-system-x86_64: CPU model 'host' requires KVM
Failed to prepare guest environment
error: [Errno 104] Connection reset by peer
source/qemu/tests/vm/Makefile.include:25: recipe for target 'tests/vm/ubuntu.i386.img' failed
make: *** [tests/vm/ubuntu.i386.img] Error 2
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180628153535.1411-4-f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
With vga=775 on the Linux command line a first boot of the VM running
Linux works fine. After a warm reboot it crashes during Linux boot.
Before that, valgrind points out bad memory write to console
surface. The VGA code is not aware that virtio-gpu got a message
surface scanout when the display is disabled. Let's reset VGA graphic
mode when it is the case, so that a new display surface is created
when doing further VGA operations.
https://bugs.launchpad.net/qemu/+bug/1784900/
Reported-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Message-id: 20180803153235.4134-1-marcandre.lureau@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The data in an mbuf buffer is not necessarily at the start of the
allocated buffer. (For instance m_adj() allows data to be trimmed
from the start by just advancing the pointer and reducing the length.)
This means that the allocated buffer size (m->m_size) and the
amount of space from the m_data pointer to the end of the
buffer (M_ROOM(m)) are not necessarily the same.
Commit 864036e251 tried to change the m_inc() function from
taking the new allocated-buffer-size to taking the new room-size,
but forgot to change the initial "do we already have enough space"
check. This meant that if we were trying to extend a buffer which
had a leading gap between the buffer start and the data, we might
incorrectly decide it didn't need to be extended, and then
overrun the end of the buffer, causing memory corruption and
an eventual crash.
Change the "already big enough?" condition from checking the
argument against m->m_size to checking against M_ROOM().
This only makes a difference for the callsite in m_cat();
the other three callsites all start with a freshly allocated
mbuf from m_get(), which will have m->m_size == M_ROOM(m).
Fixes: 864036e251
Fixes: https://bugs.launchpad.net/qemu/+bug/1785670
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Message-id: 20180807114501.12370-1-peter.maydell@linaro.org
Tested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
The instance_init function of the xtensa CPUs creates a memory region,
but does not set an owner, so the memory region is not destroyed
correctly when the CPU object is removed. This can happen when
introspecting the CPU devices, so introspecting the CPU device will
leave a dangling memory region object in the QOM tree. Make sure to
set the right owner here to fix this issue.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Message-id: 1532005320-17794-1-git-send-email-thuth@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The code currently in gicv3_gicd_no_migration_shift_bug_post_load()
that handles migration from older QEMU versions with a particular
bug is misplaced. We need to run this after migration in all cases,
not just the cases where the "arm_gicv3/gicd_no_migration_shift_bug"
subsection is present, so it must go in a post_load hook for the
top level VMSD, not for the subsection. Move it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 20180806123445.1459-6-peter.maydell@linaro.org
Contrary to the the impression given in docs/devel/migration.rst,
the migration code does not run the pre_load hook for a
subsection unless the subsection appears on the wire, and so
this is not a place where you can set the default value for
state for the "subsection not present" case. Instead this needs
to be done in a pre_load hook for whatever is the parent VMSD
of the subsection.
We got this wrong in two of the subsection definitions in
the GICv3 migration structs; fix this.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 20180806123445.1459-5-peter.maydell@linaro.org
Currently the migration code incorrectly treats a subsection with
no .needed function pointer as if it was the subsection list
terminator -- it is ignored and so is everything after it.
Work around this by giving various M profile vmstate structs
a 'needed' function that always returns true.
We reuse m_needed() for this, since it's always true here.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180806123445.1459-4-peter.maydell@linaro.org
Commit 6692aac411 accidentally introduced a second initialization
of the .subsections field of vmstate_gicv3_cpu, instead of adding
the new subsection to the existing list. The effect of this was
probably that migration of GICv3 with virtualization enabled was
broken (or alternatively that migration of ICC_SRE_EL1 was broken,
depending on which of the two initializers the compiler used).
Combine the two into a single list.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180806123445.1459-3-peter.maydell@linaro.org
Currently the migration code incorrectly treats a subsection with
no .needed function pointer as if it was the subsection list
terminator -- it is ignored and so is everything after it.
Work around this by giving vmstate_gicv3_gicd_no_migration_shift_bug
a 'needed' function that always returns true.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180806123445.1459-2-peter.maydell@linaro.org
If we do not opimize away dup_vec, we must mark its output as changed.
Fixes: 170ba88f45
Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-id: 20180805233258.31892-1-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Commit 848a1cc1e (hw/acpi-build: build SRAT memory affinity structures for DIMM devices)
broke the first dimm hotplug in following cases:
1: there is no coldplugged dimm in the last numa node
but there is a coldplugged dimm in another node
-m 4096,slots=4,maxmem=32G \
-object memory-backend-ram,id=m0,size=2G \
-device pc-dimm,memdev=m0,node=0 \
-numa node,nodeid=0 \
-numa node,nodeid=1
2: if order of dimms on CLI is:
1st plugged dimm in node1
2nd plugged dimm in node0
-m 4096,slots=4,maxmem=32G \
-object memory-backend-ram,size=2G,id=m0 \
-device pc-dimm,memdev=m0,node=1 \
-object memory-backend-ram,id=m1,size=2G \
-device pc-dimm,memdev=m1,node=0 \
-numa node,nodeid=0 \
-numa node,nodeid=1
(qemu) object_add memory-backend-ram,id=m2,size=1G
(qemu) device_add pc-dimm,memdev=m2,node=0
the first DIMM hotplug to any node except the last one
fails (Windows is unable to online it).
Length reduction of stub hotplug memory SRAT entry,
fixes issue for some reason.
RHBZ: 1609234
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Now, QEmu adds a new check for memory-less NUMA nodes in build_srat().
It effects the ACPI test.
So, Update ACPI tables test blobs.
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Check region type first before casting the memory region
to IOMMUMemoryRegion. Otherwise QEMU will abort with below
error message when casting non-IOMMU memory region:
vhost_iommu_region_add: Object 0x561f28bce4f0 is not an
instance of type qemu:iommu-memory-region
Fixes: cb1efcf462 ("iommu: Add IOMMU index argument to notifier APIs")
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The four interrupts of the PCI bus are connected to the same UIC pin
on the real Sam460ex. Evidence for this can be found in the UBoot
source for the Sam460ex in the Sam460ex.c file where
PCI_INTERRUPT_LINE is written. Change the ppc440_pcix model to behave
more like this.
This fixes the problem that can be observed when adding further PCI
cards that got their interrupt rotated to other interrupts than PCI
INT A. In particular, the bug was observed with an additional OHCI PCI
card or an ES1370 sound device.
Signed-off-by: Sebastian Bauer <mail@sebastianbauer.info>
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Tested-by: Sebastian Bauer <mail@sebastianbauer.info>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Valgrind reports an error when introspecting the macio devices, e.g.:
echo "{'execute':'qmp_capabilities'} {'execute':'device-list-properties'," \
"'arguments':{'typename':'macio-newworld'}}" \
"{'execute': 'human-monitor-command', " \
"'arguments': {'command-line': 'info qtree'}}" | \
valgrind -q ppc64-softmmu/qemu-system-ppc64 -M none,accel=qtest -qmp stdio
[...]
==30768== Invalid read of size 8
==30768== at 0x5BC1EA: qdev_print (qdev-monitor.c:686)
==30768== by 0x5BC1EA: qbus_print (qdev-monitor.c:719)
==30768== by 0x43E458: handle_hmp_command (monitor.c:3446)
[...]
Use the new function sysbus_init_child_obj() to initialize the objects
here, to get the reference counting of the objects right, so that they
are cleaned up correctly when the parent gets removed.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
With a Spice port chardev, it is possible to reenter
monitor_qapi_event_queue() (when the client disconnects for
example). This will dead-lock on monitor_lock.
Instead, use some TLS variables to check for recursion and queue the
events.
Fixes:
(gdb) bt
#0 0x00007fa69e7217fd in __lll_lock_wait () at /lib64/libpthread.so.0
#1 0x00007fa69e71acf4 in pthread_mutex_lock () at /lib64/libpthread.so.0
#2 0x0000563303567619 in qemu_mutex_lock_impl (mutex=0x563303d3e220 <monitor_lock>, file=0x5633036589a8 "/home/elmarco/src/qq/monitor.c", line=645) at /home/elmarco/src/qq/util/qemu-thread-posix.c:66
#3 0x0000563302fa6c25 in monitor_qapi_event_queue (event=QAPI_EVENT_SPICE_DISCONNECTED, qdict=0x56330602bde0, errp=0x7ffc6ab5e728) at /home/elmarco/src/qq/monitor.c:645
#4 0x0000563303549aca in qapi_event_send_spice_disconnected (server=0x563305afd630, client=0x563305745360, errp=0x563303d8d0f0 <error_abort>) at qapi/qapi-events-ui.c:149
#5 0x00005633033e600f in channel_event (event=3, info=0x5633061b0050) at /home/elmarco/src/qq/ui/spice-core.c:235
#6 0x00007fa69f6c86bb in reds_handle_channel_event (reds=<optimized out>, event=3, info=0x5633061b0050) at reds.c:316
#7 0x00007fa69f6b193b in main_dispatcher_self_handle_channel_event (info=0x5633061b0050, event=3, self=0x563304e088c0) at main-dispatcher.c:197
#8 0x00007fa69f6b193b in main_dispatcher_channel_event (self=0x563304e088c0, event=event@entry=3, info=0x5633061b0050) at main-dispatcher.c:197
#9 0x00007fa69f6d0833 in red_stream_push_channel_event (s=s@entry=0x563305ad8f50, event=event@entry=3) at red-stream.c:414
#10 0x00007fa69f6d086b in red_stream_free (s=0x563305ad8f50) at red-stream.c:388
#11 0x00007fa69f6b7ddc in red_channel_client_finalize (object=0x563304df2360) at red-channel-client.c:347
#12 0x00007fa6a56b7fb9 in g_object_unref () at /lib64/libgobject-2.0.so.0
#13 0x00007fa69f6ba212 in red_channel_client_push (rcc=0x563304df2360) at red-channel-client.c:1341
#14 0x00007fa69f68b259 in red_char_device_send_msg_to_client (client=<optimized out>, msg=0x5633059b6310, dev=0x563304e08bc0) at char-device.c:305
#15 0x00007fa69f68b259 in red_char_device_send_msg_to_clients (msg=0x5633059b6310, dev=0x563304e08bc0) at char-device.c:305
#16 0x00007fa69f68b259 in red_char_device_read_from_device (dev=0x563304e08bc0) at char-device.c:353
#17 0x000056330317d01d in spice_chr_write (chr=0x563304cafe20, buf=0x563304cc50b0 "{\"timestamp\": {\"seconds\": 1532944763, \"microseconds\": 326636}, \"event\": \"SHUTDOWN\", \"data\": {\"guest\": false}}\r\n", len=111) at /home/elmarco/src/qq/chardev/spice.c:199
#18 0x00005633034deee7 in qemu_chr_write_buffer (s=0x563304cafe20, buf=0x563304cc50b0 "{\"timestamp\": {\"seconds\": 1532944763, \"microseconds\": 326636}, \"event\": \"SHUTDOWN\", \"data\": {\"guest\": false}}\r\n", len=111, offset=0x7ffc6ab5ea70, write_all=false) at /home/elmarco/src/qq/chardev/char.c:112
#19 0x00005633034df054 in qemu_chr_write (s=0x563304cafe20, buf=0x563304cc50b0 "{\"timestamp\": {\"seconds\": 1532944763, \"microseconds\": 326636}, \"event\": \"SHUTDOWN\", \"data\": {\"guest\": false}}\r\n", len=111, write_all=false) at /home/elmarco/src/qq/chardev/char.c:147
#20 0x00005633034e1e13 in qemu_chr_fe_write (be=0x563304dbb800, buf=0x563304cc50b0 "{\"timestamp\": {\"seconds\": 1532944763, \"microseconds\": 326636}, \"event\": \"SHUTDOWN\", \"data\": {\"guest\": false}}\r\n", len=111) at /home/elmarco/src/qq/chardev/char-fe.c:42
#21 0x0000563302fa6334 in monitor_flush_locked (mon=0x563304dbb800) at /home/elmarco/src/qq/monitor.c:425
#22 0x0000563302fa6520 in monitor_puts (mon=0x563304dbb800, str=0x563305de7e9e "") at /home/elmarco/src/qq/monitor.c:468
#23 0x0000563302fa680c in qmp_send_response (mon=0x563304dbb800, rsp=0x563304df5730) at /home/elmarco/src/qq/monitor.c:517
#24 0x0000563302fa6905 in qmp_queue_response (mon=0x563304dbb800, rsp=0x563304df5730) at /home/elmarco/src/qq/monitor.c:538
#25 0x0000563302fa6b5b in monitor_qapi_event_emit (event=QAPI_EVENT_SHUTDOWN, qdict=0x563304df5730) at /home/elmarco/src/qq/monitor.c:624
#26 0x0000563302fa6c4b in monitor_qapi_event_queue (event=QAPI_EVENT_SHUTDOWN, qdict=0x563304df5730, errp=0x7ffc6ab5ed00) at /home/elmarco/src/qq/monitor.c:649
#27 0x0000563303548cce in qapi_event_send_shutdown (guest=false, errp=0x563303d8d0f0 <error_abort>) at qapi/qapi-events-run-state.c:58
#28 0x000056330313bcd7 in main_loop_should_exit () at /home/elmarco/src/qq/vl.c:1822
#29 0x000056330313bde3 in main_loop () at /home/elmarco/src/qq/vl.c:1862
#30 0x0000563303143781 in main (argc=3, argv=0x7ffc6ab5f068, envp=0x7ffc6ab5f088) at /home/elmarco/src/qq/vl.c:4644
Note that error report is now moved to the first caller, which may
receive an error for a recursed event. This is probably fine (95% of
callers use &error_abort, the rest have NULL error and ignore it)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180731150144.14022-1-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[*_no_recurse renamed to *_no_reenter, local variables reordered]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
r11 is a volatile register on PPC as per calling conventions.
The safe_syscall code uses it to check if the signal_pending
is set during the safe_syscall. When a syscall is interrupted
on return from signal handling, the r11 might be corrupted
before we retry the syscall leading to a crash. The registers
r0-r13 are not to be used here as they have
volatile/designated/reserved usages.
Change the code to use r14 which is non-volatile.
Use SP+16 which is a slot for LR, for save/restore of previous value
of r14. SP+16 can be used, as LR is preserved across the syscall.
Steps to reproduce:
On PPC host, issue `qemu-x86_64 /usr/bin/cc -E -`
Attempt Ctrl-C, the issue is reproduced.
Reference:
https://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html#REGhttps://openpowerfoundation.org/wp-content/uploads/2016/03/ABI64BitOpenPOWERv1.1_16July2015_pub4.pdf
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Tested-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <153301568965.30312.10498134581068746871.stgit@dhcp-9-109-246-16>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This adds a test to make sure we fail properly for a 0 length mmap.
There are most likely other failure conditions we should also check.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: umarcor <1783362@bugs.launchpad.net>
Message-Id: <20180730134321.19898-3-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
I've slightly re-organised the check to more closely match the
sequence that the kernel uses in do_mmap(). We check for both the zero
case (EINVAL) and the overflow length case (ENOMEM).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: umarcor <1783362@bugs.launchpad.net>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180730134321.19898-2-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
- qemu-img convert -C is now required to enable copy offloading
- file-posix: Fix write_zeroes with unmap on block devices (would fall
back to explicit writes on recent kernels)
- Fix query-blockstats interface for use with -blockdev
- Minor fixes and documentation updates
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches:
- qemu-img convert -C is now required to enable copy offloading
- file-posix: Fix write_zeroes with unmap on block devices (would fall
back to explicit writes on recent kernels)
- Fix query-blockstats interface for use with -blockdev
- Minor fixes and documentation updates
# gpg: Signature made Mon 30 Jul 2018 16:08:14 BST
# gpg: using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream:
qemu-iotests: Test query-blockstats with -drive and -blockdev
block/qapi: Include anonymous BBs in query-blockstats
block/qapi: Add 'qdev' field to query-blockstats result
file-posix: Fix write_zeroes with unmap on block devices
block: Fix documentation for BDRV_REQ_MAY_UNMAP
iotests: Add test for 'qemu-img convert -C' compatibility
qemu-img: Add -C option for convert with copy offloading
Revert "qemu-img: Document copy offloading implications with -S and -c"
iotests: Don't lock /dev/null in 226
docs: Describe using images in writing iotests
file-posix: Handle EINTR in preallocation=full write
qcow2: A grammar fix in conflicting cache sizing error message
qcow: fix a reference leak
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We clamp down ram_size to match the sclp increment size. We do
not do the same for maxram_size, which means for large guests
with some sizes (e.g. -m 50000) maxram_size differs from ram_size.
This can break other code (e.g. CMMA migration) which uses maxram_size
to calculate the number of pages and then throws some errors.
Fixes: 82fab5c5b9 ("s390x/sclp: remove memory hotplug support")
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
CC: qemu-stable@nongnu.org
CC: David Hildenbrand <david@redhat.com>
Message-Id: <1532959766-53343-1-git-send-email-borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Since 86f0a186d6 the TYPE_ARM_HOST_CPU is only compiled when CONFIG_KVM
is enabled.
Remove the now redundant special-case introduced in a96c0514ab, to avoid:
$ qemu-system-aarch64 -machine virt -cpu \? | fgrep host
host
host (only available in KVM mode)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180727132311.2777-1-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In the tz-mpc device we allocate a data block for the LUT,
which we then clear to zero in the device's reset method.
This is conceptually fine, but unfortunately results in a
valgrind complaint about use of uninitialized data on startup:
==30906== Conditional jump or move depends on uninitialised value(s)
==30906== at 0x503609: tz_mpc_translate (tz-mpc.c:439)
==30906== by 0x3F3D90: address_space_translate_iommu (exec.c:511)
==30906== by 0x3F3FF8: flatview_do_translate (exec.c:584)
==30906== by 0x3F4292: flatview_translate (exec.c:644)
==30906== by 0x3F2120: address_space_translate (memory.h:1962)
==30906== by 0x3FB753: address_space_ldl_internal (memory_ldst.inc.c:36)
==30906== by 0x3FB8A6: address_space_ldl (memory_ldst.inc.c:80)
==30906== by 0x619037: ldl_phys (memory_ldst_phys.inc.h:25)
==30906== by 0x61985D: arm_cpu_reset (cpu.c:255)
==30906== by 0x98791B: cpu_reset (cpu.c:249)
==30906== by 0x57FFDB: armv7m_reset (armv7m.c:265)
==30906== by 0x7B1775: qemu_devices_reset (reset.c:69)
This is because of a reset ordering problem -- the TZ MPC
resets after the CPU, but an M-profile CPU's reset function
includes memory loads to get the initial PC and SP, which
then go through an MPC that hasn't yet been reset.
The simplest fix for this is to zero the LUT when we
initialize the data, which will result in the MPC's
translate function giving the right answers for these
early memory accesses.
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-id: 20180724153616.32352-1-peter.maydell@linaro.org
A cut-and-paste error meant we were incorrectly wiring up the timer1
IRQ to IRQ3. IRQ3 is the interrupt for timer0 -- move timer0 to
IRQ4 where it belongs.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180727113854.20283-3-peter.maydell@linaro.org
The vmstate save/load code insists that subsections of a VMState must
have names which include their parent VMState's name as a leading
substring. Unfortunately it neither documents this nor checks it on
device init or state save, but instead fails state load with a
confusing error message ("Missing section footer for armv7m_nvic").
Fix the name of the m-security subsection of the NVIC, so that
state save/load works correctly for the security-enabled NVIC.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180727113854.20283-2-peter.maydell@linaro.org
When copy_properties_from_host() ignores the error for an optional
property, it frees the error, but fails to reset it.
Hence if two or more optional properties are missing, an assertion is
triggered:
util/error.c:57: error_setv: Assertion `*errp == NULL' failed.
Fis this by resetting err to NULL after ignoring the error.
Fixes: 9481cf2e5f ("hw/arm/sysbus-fdt: helpers for clock node generation")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Message-id: 20180725113000.11014-1-geert+renesas@glider.be
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The 'vmstate_smmuv3_queue' is missing the end-of-list marker.
Fixes: 10a83cb988
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 20180727135406.15132-1-dgilbert@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: dropped stray blank line]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Make sure that query-blockstats returns information for every
BlockBackend that is named or attached to a device model (or both).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Consistent with query-block, query-blockstats should not only include
named BlockBackends, but also those that are anonymous, but belong to a
device model.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Like for query-block, the client needs to identify which BlockBackend
the returned data is for. Anonymous BlockBackends are identified by the
device model they are attached to. Add a 'qdev' field that contains the
qdev ID or QOM path of the attached device model.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The BLKDISCARD ioctl doesn't guarantee that the discarded blocks read as
all-zero afterwards, so don't try to abuse it for zero writing. We try
to only use this if BLKDISCARDZEROES tells us that it is safe, but this
is unreliable on older kernels and a constant 0 in newer kernels. In
other words, this code path is never actually used with newer kernels,
so we don't even try to unmap while writing zeros.
This patch removes the abuse of discard for writing zeroes from
file-posix and instead adds a new function that uses interfaces that are
actually meant to deallocate and zero out at the same time. Only if
those fail, it falls back to zeroing out without unmap. We never fall
back to a discard operation any more that may or may not result in
zeros.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
