Age | Commit message (Collapse) | Author |
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Pick a uniform chardev type name.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Use common allocator for CharDriverState.
Rename the now untouched parent field.
The casts added are temporary, they are replaced with QOM type-safe
macros in a later patch in this series.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Use a single allocation for CharDriverState, this avoids extra
allocations & pointers, and is a step towards more object-oriented
CharDriver.
Gtk console is a bit peculiar, gd_vc_chr_set_echo() used to have a
temporary VirtualConsole to save the echo bit. Instead now, we consider
whether vcd->console is set or not, and restore the echo bit saved in
VCDriverState when calling gd_vc_vte_init().
The casts added are temporary, they are replaced with QOM type-safe
macros in a later patch in this series.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Use a feature flag rather than a structure field for "replay".
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This allows to remove the "is_mux" field from CharDriverState.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This shortens the code a bit.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This makes the code more declarative, and avoids duplicating the
information on all instances.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Number and kinds of backends is known at compile-time, use a fixed-sized
static array to simplify iterations & lookups.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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No need to allocate & copy fields, let's use static const struct instead.
Add an alias field to the CharDriver structure to cover the cases where
we previously registered a driver twice under two names.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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I am pretty sure that's the word Fabrice Bellard intended to write.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Available since commit db418a0a7ef5887ea0f3d167584e6f500bb0c4c5
(October 2011, qemu 1.0)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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test.char.exe fails to link:
qemu-char.o: In function `win_chr_free':
/home/elmarco/src/qemu/qemu-char.c:2149: undefined reference to `qemu_del_polling_cb'
/home/elmarco/src/qemu/qemu-char.c:2151: undefined reference to `qemu_del_polling_cb'
qemu-char.o: In function `win_stdio_thread':
/home/elmarco/src/qemu/qemu-char.c:2568: undefined reference to `qemu_del_wait_object'
qemu-char.o: In function `qemu_chr_open_stdio':
/home/elmarco/src/qemu/qemu-char.c:2661: undefined reference to `qemu_add_wait_object'
/home/elmarco/src/qemu/qemu-char.c:2646: undefined reference to
`qemu_add_wait_object'
...
It needs main-loop.o symbols, among others. Linking with
$(test-block-obj-y) brings what's necessary. We could try to eventually
strip to the minimum if needed.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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commit f57b4b5f moved qemu_iscsi_opts into vl.c. This
made them invisible for qemu-img, qemu-nbd etc.
Fixes: f57b4b5fb127b60e1aade2684a8b16bc4f630b29
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Message-Id: <1485262161-18543-1-git-send-email-pl@kamp.de>
[Drop useless #ifdef. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
Message-Id: <1484921496-11257-4-git-send-email-phil@philjordan.eu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This fixes timekeeping of x86-64 Darwin/OS X/macOS guests when using KVM.
Darwin/OS X/macOS for x86-64 uses the TSC for timekeeping; it normally calibrates this by querying various clock frequency scaling MSRs. Details depend on the exact CPU model detected. The local APIC timer frequency is extracted from (EFI) firmware.
This is problematic in the presence of virtualisation, as the MSRs in question are typically not handled by the hypervisor. VMWare (Fusion) advertises TSC and APIC frequency via a custom 0x40000010 CPUID leaf, in the eax and ebx registers respectively. This is documented at https://lwn.net/Articles/301888/ among other places.
Darwin/OS X/macOS looks for the generic 0x40000000 hypervisor leaf, and if this indicates via eax that leaf 0x40000010 might be available, that is in turn queried for the two frequencies.
This adds a CPU option "vmware-cpuid-freq" to enable the same behaviour when running Qemu with KVM acceleration, if the KVM TSC frequency can be determined, and it is stable. (invtsc or user-specified) The virtualised APIC bus cycle is hardcoded to 1GHz in KVM, so ebx of the CPUID leaf is also hardcoded to this value.
Signed-off-by: Phil Dennis-Jordan <phil@philjordan.eu>
Message-Id: <1484921496-11257-2-git-send-email-phil@philjordan.eu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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We can get the maximum number of bytes for a single I/O transfer
from the BLKSECTGET ioctl, but we only perform this for block
devices. scsi-generic devices are represented as character devices,
and so do not issue this today. Update this, so that virtio-scsi
devices using the scsi-generic interface can return the same data.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Message-Id: <20170120162527.66075-4-farman@linux.vnet.ibm.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Commit 6f6071745bd0 ("raw-posix: Fetch max sectors for host block device")
introduced a routine to call the kernel BLKSECTGET ioctl, which stores the
result back to user space. However, the size of the data returned depends
on the routine handling the ioctl. The (compat_)blkdev_ioctl returns a
short, while sg_ioctl returns an int. Thus, on big-endian systems, we can
find ourselves accidentally shifting the result to a much larger value.
(On s390x, a short is 16 bits while an int is 32 bits.)
Also, the two ioctl handlers return values in different scales (block
returns sectors, while sg returns bytes), so some tweaking of the outputs
is required such that hdev_get_max_transfer_length returns a value in a
consistent set of units.
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Message-Id: <20170120162527.66075-3-farman@linux.vnet.ibm.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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When running with debug enabled, the scsi-generic cdb that is
dumped skips byte 0 of the command, which is the opcode. This
makes identifying which command is being issued/completed a
little difficult. Example:
0x00 0x00 0x01 0x00 0x00
scsi-generic: scsi_read_data 0x0
scsi-generic: Data ready tag=0x0 len=164
scsi-generic: scsi_read_data 0x0
scsi-generic: Command complete 0x0x10a42c60 tag=0x0 status=0
Improve this by adding a message prior to the loop, similar to
what exists for scsi-disk. Clean up a few other messages to be
more explicit of what is being represented. Example:
scsi-generic: Command: data=0x12 0x00 0x00 0x01 0x00 0x00
scsi-generic: scsi_read_data tag=0x0
scsi-generic: Data ready tag=0x0 len=164
scsi-generic: scsi_read_data tag=0x0
scsi-generic: Command complete 0x0x10a452d0 tag=0x0 status=0
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Message-Id: <20170120162527.66075-2-farman@linux.vnet.ibm.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Now that CPUs show up in the help text of "-device ?",
we should group them into an appropriate category.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1484917276-7107-1-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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nb_cls_shrunk in iscsi_allocmap_update can become -1 if the
request starts and ends within the same cluster. This results
in passing -1 to bitmap_set and bitmap_clear and they don't
handle negative values properly. In the end this leads to data
corruption.
Fixes: e1123a3b40a1a9a625a29c8ed4debb7e206ea690
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Message-Id: <1484579832-18589-1-git-send-email-pl@kamp.de>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20170126014416.11211-4-lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The generic edk2 SMM infrastructure prefers
EFI_SMM_CONTROL2_PROTOCOL.Trigger() to inject an SMI on each processor. If
Trigger() only brings the current processor into SMM, then edk2 handles it
in the following ways:
(1) If Trigger() is executed by the BSP (which is guaranteed before
ExitBootServices(), but is not necessarily true at runtime), then:
(a) If edk2 has been configured for "traditional" SMM synchronization,
then the BSP sends directed SMIs to the APs with APIC delivery,
bringing them into SMM individually. Then the BSP runs the SMI
handler / dispatcher.
(b) If edk2 has been configured for "relaxed" SMM synchronization,
then the APs that are not already in SMM are not brought in, and
the BSP runs the SMI handler / dispatcher.
(2) If Trigger() is executed by an AP (which is possible after
ExitBootServices(), and can be forced e.g. by "taskset -c 1
efibootmgr"), then the AP in question brings in the BSP with a
directed SMI, and the BSP runs the SMI handler / dispatcher.
The smaller problem with (1a) and (2) is that the BSP and AP
synchronization is slow. For example, the "taskset -c 1 efibootmgr"
command from (2) can take more than 3 seconds to complete, because
efibootmgr accesses non-volatile UEFI variables intensively.
The larger problem is that QEMU's current behavior diverges from the
behavior usually seen on physical hardware, and that keeps exposing
obscure corner cases, race conditions and other instabilities in edk2,
which generally expects / prefers a software SMI to affect all CPUs at
once.
Therefore introduce the "broadcast SMI" feature that causes QEMU to inject
the SMI on all VCPUs.
While the original posting of this patch
<http://lists.nongnu.org/archive/html/qemu-devel/2015-10/msg05658.html>
only intended to speed up (2), based on our recent "stress testing" of SMM
this patch actually provides functional improvements.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20170126014416.11211-3-lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Introduce the following fw_cfg files:
- "etc/smi/supported-features": a little endian uint64_t feature bitmap,
presenting the features known by the host to the guest. Read-only for
the guest.
The content of this file will be determined via bit-granularity ICH9-LPC
device properties, to be introduced later. For now, the bitmask is left
zeroed. The bits will be set from machine type compat properties and on
the QEMU command line, hence this file is not migrated.
- "etc/smi/requested-features": a little endian uint64_t feature bitmap,
representing the features the guest would like to request. Read-write
for the guest.
The guest can freely (re)write this file, it has no direct consequence.
Initial value is zero. A nonzero value causes the SMI-related fw_cfg
files and fields that are under guest influence to be migrated.
- "etc/smi/features-ok": contains a uint8_t value, and it is read-only for
the guest. When the guest selects the associated fw_cfg key, the guest
features are validated against the host features. In case of error, the
negotiation doesn't proceed, and the "features-ok" file remains zero. In
case of success, the "features-ok" file becomes (uint8_t)1, and the
negotiated features are locked down internally (to which no further
changes are possible until reset).
The initial value is zero. A nonzero value causes the SMI-related
fw_cfg files and fields that are under guest influence to be migrated.
The C-language fields backing the "supported-features" and
"requested-features" files are uint8_t arrays. This is because they carry
guest-side representation (our choice is little endian), while
VMSTATE_UINT64() assumes / implies host-side endianness for any uint64_t
fields. If we migrate a guest between hosts with different endiannesses
(which is possible with TCG), then the host-side value is preserved, and
the host-side representation is translated. This would be visible to the
guest through fw_cfg, unless we used plain byte arrays. So we do.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20170126014416.11211-2-lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Adding one more option "-f" for "info mtree" to dump the flat views of
all the address spaces.
This will be useful to debug the memory rendering logic, also it'll be
much easier with it to know what memory region is handling what address
range.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1484556005-29701-3-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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We were dumping RW bits for each memory region, that might be confusing.
It'll make more sense to dump the memory region type directly rather
than the RW bits since that's how the bits are derived.
Meanwhile, with some slight cleanup in the function.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1484556005-29701-2-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch implements saving/restoring of static apic_delivered variable.
v8: saving static variable only for one of the APICs
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170126123429.5412.94368.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch fixes replaying the exception when TB cache is full.
It breaks cpu loop execution through setting exception_index
to process such queued work as TB flush.
v8: moved setting of exeption_index to tb_gen_code
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170126123418.5412.33815.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch implements initial vmstate creation or loading at the start
of record/replay. It is needed for rewinding the execution in the replay mode.
v4 changes:
- snapshots are not created by default anymore
v3 changes:
- added rrsnapshot option
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170124071746.4572.61449.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch introduces save_vmstate function to allow saving and loading
vmstates from the replay module.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170124071741.4572.13714.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch disables the update of the periodic timer of mc146818rtc
in record/replay mode. State of this timer is saved and therefore does
not need to be updated in record/replay mode.
Read of RTC breaks the replay because all rtc reads have to be the same
as in record mode.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170124071730.4572.41874.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch improves interrupt handling in record/replay mode.
Now "interrupt" event is saved only when cc->cpu_exec_interrupt returns true.
This patch also adds missing return to cpu_exec_interrupt function.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170124071708.4572.64023.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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kvmvapic patches the code when some instructions are executed.
E.g. mov 0xff, 0xfffe0080 is interpreted as push 0xff/call ...
This patching is also followed by some side effects (changing apic
and guest memory state). Therefore deterministic execution should take
this operation into account. This patch decreases icount when original
mov instruction is trying to execute. Therefore patching becomes
deterministic and can be replayed correctly.
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170124071702.4572.17294.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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staging
QAPI/QMP patches for 2017-01-27
# gpg: Signature made Fri 27 Jan 2017 07:24:02 GMT
# gpg: using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653
* remotes/armbru/tags/pull-qapi-2017-01-27:
qmp: Fix argument name in error message of device-list-properties
qapi: Remove unwanted commas after #optional keyword
build-sys: Minor qapi doc generation target cleanups
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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into staging
Merge io/ 2017/01/26
# gpg: Signature made Thu 26 Jan 2017 10:26:48 GMT
# gpg: using RSA key 0xBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E 8E3F BE86 EBB4 1510 4FDF
* remotes/berrange/tags/pull-qio-2017-01-26-1:
io: fix possible double free of task error object
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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One compile fix for s390x with kvm enabled.
# gpg: Signature made Thu 26 Jan 2017 10:57:55 GMT
# gpg: using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0 18CE DECF 6B93 C6F0 2FAF
* remotes/cohuck/tags/s390x-20170126:
s390x/flic: fix compilation of kvm flic
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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staging
# gpg: Signature made Thu 26 Jan 2017 10:19:35 GMT
# gpg: using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8
* remotes/stefanha/tags/block-pull-request:
aio-posix: honor is_external in AioContext polling
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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# gpg: Signature made Thu 26 Jan 2017 02:44:47 GMT
# gpg: using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.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: 5003 7CB7 9706 0F76 F021 AD56 CA35 624C 6A91 71C6
* remotes/famz/tags/for-upstream:
test-hbitmap: Add hbitmap_is_serializable() calls
hbitmap: Add hbitmap_is_serializable()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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The argument is called "typename", not "name".
[Thanks to Markus for correcting the commit message]
Signed-off-by: Lin Ma <lma@suse.com>
Message-Id: <20170125052703.23571-1-lma@suse.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
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We don't want that commas to be part of the generated documentation,
so remove them.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-Id: <20170122145407.27476-1-sw@weilnetz.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Move makeinfo flags from MAKEINFO to MAKEINFOFLAGS. Fix the call of
quiet-command for target qemu-ga-qapi.texi. Both messed up in commit
56e8bdd.
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1484816804-12598-1-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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If a QIOTask has an error set and the calling code uses
qio_task_propagate_error() to steal the reference to
that Error object, the task would not clear its own
reference. This would lead to a double-free when
qio_task_free runs, if the caller had (correctly) freed
the Error object they now owned.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
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AioHandlers marked ->is_external must be skipped when aio_node_check()
fails. bdrv_drained_begin() needs this to prevent dataplane from
submitting new I/O requests while another thread accesses the device and
relies on it being quiesced.
This patch fixes the following segfault:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00005577f6127dad in bdrv_io_plug (bs=0x5577f7ae52f0) at qemu/block/io.c:2650
2650 bdrv_io_plug(child->bs);
[Current thread is 1 (Thread 0x7ff5c4bd1c80 (LWP 10917))]
(gdb) bt
#0 0x00005577f6127dad in bdrv_io_plug (bs=0x5577f7ae52f0) at qemu/block/io.c:2650
#1 0x00005577f6114363 in blk_io_plug (blk=0x5577f7b8ba20) at qemu/block/block-backend.c:1561
#2 0x00005577f5d4091d in virtio_blk_handle_vq (s=0x5577f9ada030, vq=0x5577f9b3d2a0) at qemu/hw/block/virtio-blk.c:589
#3 0x00005577f5d4240d in virtio_blk_data_plane_handle_output (vdev=0x5577f9ada030, vq=0x5577f9b3d2a0) at qemu/hw/block/dataplane/virtio-blk.c:158
#4 0x00005577f5d88acd in virtio_queue_notify_aio_vq (vq=0x5577f9b3d2a0) at qemu/hw/virtio/virtio.c:1304
#5 0x00005577f5d8aaaf in virtio_queue_host_notifier_aio_poll (opaque=0x5577f9b3d308) at qemu/hw/virtio/virtio.c:2134
#6 0x00005577f60ca077 in run_poll_handlers_once (ctx=0x5577f79ddbb0) at qemu/aio-posix.c:493
#7 0x00005577f60ca268 in try_poll_mode (ctx=0x5577f79ddbb0, blocking=true) at qemu/aio-posix.c:569
#8 0x00005577f60ca331 in aio_poll (ctx=0x5577f79ddbb0, blocking=true) at qemu/aio-posix.c:601
#9 0x00005577f612722a in bdrv_flush (bs=0x5577f7c20970) at qemu/block/io.c:2403
#10 0x00005577f60c1b2d in bdrv_close (bs=0x5577f7c20970) at qemu/block.c:2322
#11 0x00005577f60c20e7 in bdrv_delete (bs=0x5577f7c20970) at qemu/block.c:2465
#12 0x00005577f60c3ecf in bdrv_unref (bs=0x5577f7c20970) at qemu/block.c:3425
#13 0x00005577f60bf951 in bdrv_root_unref_child (child=0x5577f7a2de70) at qemu/block.c:1361
#14 0x00005577f6112162 in blk_remove_bs (blk=0x5577f7b8ba20) at qemu/block/block-backend.c:491
#15 0x00005577f6111b1b in blk_remove_all_bs () at qemu/block/block-backend.c:245
#16 0x00005577f60c1db6 in bdrv_close_all () at qemu/block.c:2382
#17 0x00005577f5e60cca in main (argc=20, argv=0x7ffea6eb8398, envp=0x7ffea6eb8440) at qemu/vl.c:4684
The key thing is that bdrv_close() uses bdrv_drained_begin() and
virtio_queue_host_notifier_aio_poll() must not be called.
Thanks to Fam Zheng <famz@redhat.com> for identifying the root cause of
this crash.
Reported-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Alberto Garcia <berto@igalia.com>
Message-id: 20170124095350.16679-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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2c21ee7 ("migration: extend VMStateInfo") missed a void -> int
return conversion for kvm_flic_save().
Fixes: 2c21ee7 ("migration: extend VMStateInfo")
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Add calls to hbitmap_is_serializable() (asserting that it returns true)
where necessary (i.e. before every series of (de-)serialization function
invocations).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20161115225746.3590-3-mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
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Bitmaps with a granularity of 58 or above can be neither serialized nor
deserialized (see the comment in the function added in this series for
an explanation). This patch adds a function so that we can check whether
a bitmap actually can be (de-)serialized at all, thus avoiding failing
the necessary assertion in hbitmap_serialization_granularity().
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20161115225746.3590-2-mreitz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
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This pull request fixes a 2.9 regression and a long standing bug that can
cause 9p clients to hang. Other patches are minor enhancements.
# gpg: Signature made Wed 25 Jan 2017 10:12:27 GMT
# gpg: using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg: aka "Greg Kurz <groug@free.fr>"
# gpg: aka "Greg Kurz <gkurz@fr.ibm.com>"
# gpg: aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg: aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg: aka "Gregory Kurz (Cimai Technology) <gkurz@cimai.com>"
# gpg: aka "Gregory Kurz (Meiosys Technology) <gkurz@meiosys.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: 2BD4 3B44 535E C0A7 9894 DBA2 02FC 3AEB 0101 DBC2
* remotes/gkurz/tags/for-upstream:
9pfs: fix offset error in v9fs_xattr_read()
9pfs: local: trivial cosmetic fix in pwritev op
9pfs: fix off-by-one error in PDU free list
tests: virtio-9p: improve error reporting
9pfs: add missing coroutine_fn annotations
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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target/xtensa updates:
- refactor CCOUNT/CCOMPARE (use QEMU timers instead of instruction counting);
- support icount; run target/xtensa TCG tests with icount;
- implement SMP prerequisites: static vector selection, RUNSTALL and RER/WER.
# gpg: Signature made Wed 25 Jan 2017 00:27:51 GMT
# gpg: using RSA key 0x51F9CC91F83FA044
# gpg: Good signature from "Max Filippov <max.filippov@cogentembedded.com>"
# gpg: aka "Max Filippov <jcmvbkbc@gmail.com>"
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB 17D8 51F9 CC91 F83F A044
* remotes/xtensa/tags/20170124-xtensa:
target-xtensa: implement RER/WER instructions
target/xtensa: tests: clean up interrupt tests
target/xtensa: tests: add memctl test
target/xtensa: implement MEMCTL SR
target/xtensa: fix ICACHE/DCACHE options detection
target/xtensa: tests: add ccount write tests
target/xtensa: tests: replace hardcoded interrupt masks
target/xtensa: tests: fix timer tests
target/xtensa: tests: run tests with icount
target/xtensa: don't continue translation after exception
target/xtensa: support icount
target/xtensa: refactor CCOUNT/CCOMPARE
target/xtensa: implement RUNSTALL
target/xtensa: add static vectors selection
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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nios2 target support
# gpg: Signature made Tue 24 Jan 2017 21:11:47 GMT
# gpg: using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
# Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC 16A4 AD12 70CC 4DD0 279B
* remotes/rth/tags/pull-nios-20170124:
nios2: Add support for Nios-II R1
nios2: Add Altera 10M50 GHRD emulation
nios2: Add periodic timer emulation
nios2: Add IIC interrupt controller emulation
nios2: Add usermode binaries emulation
nios2: Add disas entries
nios2: Add architecture emulation support
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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staging
trivial patches for 2017-01-24
# gpg: Signature made Tue 24 Jan 2017 20:27:08 GMT
# gpg: using RSA key 0x701B4F6B1A693E59
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>"
# gpg: aka "Michael Tokarev <mjt@corpit.ru>"
# gpg: aka "Michael Tokarev <mjt@debian.org>"
# Primary key fingerprint: 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5
# Subkey fingerprint: 7B73 BAD6 8BE7 A2C2 8931 4B22 701B 4F6B 1A69 3E59
* remotes/mjt/tags/trivial-patches-fetch: (31 commits)
hw/isa/isa-bus: Set category of the "isabus-bridge" device
usb: Set category and description of the MTP device
gdbstub.c: update old error report statements
gdbstub.c: fix GDB connection segfault caused by empty machines
scsi-disk: add 'fall through' comment to switch VERIFY cases
Drop duplicate display option documentation
hw/display/framebuffer.c: Avoid overflow for framebuffers > 4GB
win32: use glib gpoll if glib >= 2.50
util/mmap-alloc: refactor a little bit for readability
util/mmap-alloc: check parameter before using
vfio: remove a duplicated word in comments
docs: sync pci-ids.txt
disas/cris.c: Fix Coverity warning about unchecked NULL
lm32: milkymist-tmu2: fix another integer overflow
hw/i386/kvmvapic: Remove dead code in patch_hypercalls()
doc/usb2: fix typo
qga: fix erroneous argument to strerror
block: remove dead check
pci-assign: avoid pointless stat
qemu-img: remove dead check
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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