This will allow to build slightly leaner QEMU that supports some HyperV
features of KVM (e.g. SynIC timers, PV spinlocks, APIC assists, etc.)
but nothing else on the QEMU side.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921082041.29380-6-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Accumulate HYPERV config options in a dedicated file. There are only
two so far; more will be added later.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921082041.29380-5-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
A significant part of hyperv.c is not actually tied to x86, and can
be moved to hw/.
This will allow to maintain most of Hyper-V and VMBus
target-independent, and to avoid conflicts with inclusion of
arch-specific headers down the road in VMBus implementation.
Also this stuff can now be opt-out with CONFIG_HYPERV.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921082041.29380-4-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Also make the inverse function, hyperv_find_vcpu, static as it's not
used outside hyperv.c
This paves the way to making hyperv.c built optionally.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921082041.29380-3-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Some parts of the Hyper-V hypervisor-guest interface appear to be
target-independent, so move them into a proper header.
Not that Hyper-V ARM64 emulation is around the corner but it seems more
conveninent to have most of Hyper-V and VMBus target-independent, and
allows to avoid conflicts with inclusion of arch-specific headers down
the road in VMBus implementation.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921082041.29380-2-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There's nothing kvm-specific in it so follow the suite and replace
"kvm_hv" prefix with "hyperv".
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-9-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Multiple entities (e.g. VMBus devices) can use the same SINT route. To
make their lives easier in maintaining SINT route ownership, make it
reference-counted. Adjust the respective API names accordingly.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-8-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Use X86CPU pointer to refer to the respective HvSintRoute instead of
vp_index. This is more convenient and also paves the way for future
enhancements.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-7-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Make sint ack callback accept an opaque pointer, that is stored on
sint_route at creation time.
This allows for more convenient interaction with the callback.
Besides, nothing outside hyperv.c should need to know the layout of
HvSintRoute fields any more so its declaration can be removed from the
header.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-6-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There's no point setting up an sint ack notifier if no callback is
specified.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-5-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-4-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-3-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Make hyperv_testdev slightly easier to follow and enhance in future.
For that, put the hyperv sint routes (wrapped in a helper structure) on
a linked list rather than a fixed-size array. Besides, this way
HvSintRoute can be treated as an opaque structure, allowing for easier
refactoring of the core Hyper-V SynIC code in followup pathches.
Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-2-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
rerror=ignore was returning true from scsi_handle_rw_error but the callers were not
calling scsi_req_complete when rerror=ignore returns true (this is the correct thing
to do when true is returned after executing a passthrough command). Fix this by
calling it in scsi_handle_rw_error.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If a command fails with a sense that scsi_sense_buf_to_errno converts to
ECANCELED/EAGAIN/ENOTCONN or with a unit attention, scsi_req_complete is
called twice. This caused a crash.
Reported-by: Wangguang <wang.guangA@h3c.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When [2] was fixed it was agreed that adding and calling post_plug()
callback after device_reset() was low risk approach to hotfix issue
right before release. So it was merged instead of moving already
existing plug() callback after device_reset() is called which would
be more risky and require all plug() callbacks audit.
Looking at the current plug() callbacks, it doesn't seem that moving
plug() callback after device_reset() is breaking anything, so here
goes agreed upon [3] proper fix which essentially reverts [1][2]
and moves plug() callback after device_reset().
This way devices always comes to plug() stage, after it's been fully
initialized (including being reset), which fixes race condition [2]
without need for an extra post_plug() callback.
1. (25e897881 "qdev: add HotplugHandler->post_plug() callback")
2. (8449bcf94 "virtio-scsi: fix hotplug ->reset() vs event race")
3. https://www.mail-archive.com/qemu-devel@nongnu.org/msg549915.html
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1539696820-273275-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Pierre Morel<pmorel@linux.ibm.com>
Acked-by: Pierre Morel<pmorel@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Return value of qemu_timedate_diff(), used for calculation offset in
QAPI 'RTC_CHANGE' event, restored to keep compatibility. Since it
wasn't documented that difference is relative to host clock
advancement, this change also adds important note to 'RTC_CHANGE'
event description to highlight established implementation specifics.
Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Message-Id: <1fc12c77e8b7115d3842919a8b586d9cbe4efca6.1539846575.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This makes all current "-rtc" option parameters combinations produce
fixed/unambiguous RTC timedate reference for hardware emulation
frontends.
It restores determinism of guest execution when used with clock=vm and
specified base <datetime> value.
Buglink: https://bugs.launchpad.net/qemu/+bug/1797033
Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Message-Id: <1d963c3e013dfedafa1f6edb9fb219b7e49e39da.1539846575.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Documentation describing -rtc option updated to better match current
implementation and highlight some important specifics.
Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Message-Id: <1b245c6c0803d4bf11dcbf9eb32f34af8c2bd0b4.1539846575.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
accel_init_machine sets *(acc->allowed) to true if acc->init_machine(ms)
succeeds. There's no need to have both hvf_allowed and hvf_disabled.
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20181018143051.48508-1-r.bolshakov@yadro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
According to Intel(R)64 and IA-32 Architectures Software Developer's
Manual, the following one-byte registers should be fetched when REX
prefix is present (sorted by reg encoding index):
AL, CL, DL, BL, SPL, BPL, SIL, DIL, R8L - R15L
The first 8 are fetched if REX.R is zero, the last 8 if non-zero.
The following registers should be fetched for instructions without REX
prefix (also sorted by reg encoding index):
AL, CL, DL, BL, AH, CH, DH, BH
Current emulation code doesn't handle accesses to SPL, BPL, SIL, DIL
when REX is present, thefore an instruction 40883e "mov %dil,(%rsi)" is
decoded as "mov %bh,(%rsi)".
That caused an infinite loop in vp_reset:
https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg03293.html
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20181018134401.44471-1-r.bolshakov@yadro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Hyper-V PV IPI support is merged to KVM, enable the feature in Qemu. When
enabled, this allows Windows guests to send IPIs to other vCPUs with a
single hypercall even when there are >64 vCPUs in the request.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20181009130853.6412-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
As QEMU becomes more multi-threaded and non-synchronized, checkpoints
move from thread to thread. And the event queue that processed at checkpoints
should belong to the same thread in both record and replay executions.
This patch disables asynchronous event processing at virtual clock
checkpoint, because it may be invoked in different threads at record and
replay. This patch is temporary fix until the checkpoints are completely
refactored.
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Message-Id: <20181018063345.7433.11678.stgit@pasha-VirtualBox>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The exception.pad field is going to be renamed to pending in an upcoming
header file update. Remove the unnecessary initialization; it was
introduced to please valgrind (commit 7e680753cf) but they were later
rendered unnecessary by commit 076796f8fd, which added the "= {}"
initializer to the declaration of "events". Therefore the patch does
not change behavior in any way.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Adds EXTERNAL attribute definition to qemu timers subsystem and assigns
it to virtual clock timers, used in slirp (ICMP IPv6) and ui (key queue).
Virtual clock processing in rr mode can use this attribute instead of a
separate clock type.
Fixes: 87f4fe7653
Fixes: 775a412bf8
Fixes: 9888091404
Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Message-Id: <e771f96ab94e86b54b9a783c974f2af3009fe5d1.1539764043.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Attributes are simple flags, associated with individual timers for their
whole lifetime. They intended to be used to mark individual timers for
special handling when they fire.
New/init functions family in timer interface updated and refactored (new
'attribute' argument added, timer_list replaced with timer_list_group+type
combinations, comments improved to avoid info duplication). Also existing
aio interface extended with attribute-enabled variants of functions,
which create/initialize timers.
Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Message-Id: <f47b81dbce734e9806f9516eba8ca588e6321c2f.1539764043.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
That patch series introduced new virtual clock type for use in external
subsystems. It breaks desired behavior in non-record/replay usage
scenarios due to a small change to existing behavior. Processing of
virtual timers belonging to new clock type is kicked off to the main
loop, which makes these timers asynchronous with vCPU thread and,
in icount mode, with whole guest execution. This breaks expected
determinism in non-record/replay icount mode of emulation where these
"external subsystems" are isolated from the host (i.e. they are
external only to guest core, not to the entire emulation environment).
Example for slirp ("user" backend for network device):
User runs qemu in icount mode with rtc clock=vm without any external
communication interfaces but with "-netdev user,restrict=on". It expects
deterministic execution, because network services are emulated inside
qemu and isolated from host. There are no reasons to get reply from DHCP
server with different delay or something like that.
The next patches revert reimplements the same changes in a better way.
This reverts commit 87f4fe7653.
This reverts commit 775a412bf8.
This reverts commit 9888091404.
Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Message-Id: <18b1e7c8f155fe26976f91be06bde98eef6f8751.1539764043.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
They are not consecutive with DAC1_FRAME* and DAC2_FRAME*; Coverity
still complains about es1370_read, while es1370_write was fixed in
commit cf9270e522.
Fixes: 154c1d1f96
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
libgcrypt 1.5.0 was released in 2011 and all the distros that are build
target platforms for QEMU [1] include it:
RHEL-7: 1.5.3
Debian (Stretch): 1.7.6
Debian (Jessie): 1.6.3
OpenBSD (ports): 1.8.2
FreeBSD (ports): 1.8.3
OpenSUSE Leap 15: 1.8.2
Ubuntu (Xenial): 1.6.5
macOS (Homebrew): 1.8.3
Based on this, it is reasonable to require libgcrypt >= 1.5.0 in QEMU
which allows for some conditional version checks in the code to be
removed.
[1] https://qemu.weilnetz.de/doc/qemu-doc.html#Supported-build-platforms
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
gnutls 3.0.0 was released in 2011 and all the distros that are build
target platforms for QEMU [1] include it:
RHEL-7: 3.1.18
Debian (Stretch): 3.5.8
Debian (Jessie): 3.3.8
OpenBSD (ports): 3.5.18
FreeBSD (ports): 3.5.18
OpenSUSE Leap 15: 3.6.2
Ubuntu (Xenial): 3.4.10
macOS (Homebrew): 3.5.19
Based on this, it is reasonable to require gnutls >= 3.1.18 in QEMU
which allows for all conditional version checks in the code to be
removed.
[1] https://qemu.weilnetz.de/doc/qemu-doc.html#Supported-build-platforms
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-october-2018-part1-v2' into staging
MIPS queue October 2018, part1, v2
# gpg: Signature made Thu 18 Oct 2018 19:39:00 BST
# gpg: using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.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: 8526 FBF1 5DA3 811F 4A01 DD75 D497 2A89 67F7 5A65
* remotes/amarkovic/tags/mips-queue-october-2018-part1-v2: (28 commits)
target/mips: Add opcodes for nanoMIPS EVA instructions
target/mips: Fix misplaced 'break' in handling of NM_SHRA_R_PH
target/mips: Fix emulation of microMIPS R6 <SELEQZ|SELNEZ>.<D|S>
target/mips: Implement hardware page table walker for MIPS32
target/mips: Add reset state for PWSize and PWField registers
target/mips: Add CP0 PWCtl register
target/mips: Add CP0 PWSize register
target/mips: Add CP0 PWField register
target/mips: Add CP0 PWBase register
target/mips: Add CP0 Config2 to DisasContext
target/mips: Improve DSP R2/R3-related naming
target/mips: Add availability control for DSP R3 ASE
target/mips: Add bit definitions for DSP R3 ASE
target/mips: Reorganize bit definitions for insn_flags (ISAs/ASEs flags)
target/mips: Increase 'supported ISAs/ASEs' flag holder size
target/mips: Add opcode values of MXU ASE
target/mips: Add organizational chart of MXU ASE
target/mips: Add assembler mnemonics list for MXU ASE
target/mips: Add basic description of MXU ASE
target/mips: Add a comment before each CP0 register section in cpu.h
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When using the "-device" option, the property is called "mac".
"macaddr" is only used for the legacy "-net nic" option.
Reported-by: Harald Hoyer <harald@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
The e1000 emulation silently discards RX packets if there's
insufficient space in the ring buffer. This leads to errors
on higher-level protocols in the guest, with no indication
about the error cause.
This patch increments the "Missed Packets Count" (MPC) and
"Receive No Buffers Count" (RNBC) HW counters in this case.
As the emulation has no FIFO for buffering packets that can't
immediately be pushed to the guest, these two registers are
practically equivalent (see 10.2.7.4, 10.2.7.33 in
https://www.intel.com/content/www/us/en/embedded/products/networking/82574l-gbe-controller-datasheet.html).
On a Linux guest, the register content will be reflected in
the "rx_missed_errors" and "rx_no_buffer_count" stats from
"ethtool -S", and in the "missed" stat from "ip -s -s link show",
giving at least some hint about the error cause inside the guest.
If the cause is known, problems like this can often be avoided
easily, by increasing the number of RX descriptors in the guest
e1000 driver (e.g under Linux, "e1000.RxDescriptors=1024").
The patch also adds a qemu trace message for this condition.
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
There should not be a reason for passing a packet size greater than
INT_MAX. It's usually a hint of bug somewhere, so ignore packet size
greater than INT_MAX in qemu_deliver_packet_iov()
CC: qemu-stable@nongnu.org
Reported-by: Daniel Shapira <daniel@twistlock.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
In pcnet_receive(), we try to assign size_ to size which converts from
size_t to integer. This will cause troubles when size_ is greater
INT_MAX, this will lead a negative value in size and it can then pass
the check of size < MIN_BUF_SIZE which may lead out of bound access
for both buf and buf1.
Fixing by converting the type of size to size_t.
CC: qemu-stable@nongnu.org
Reported-by: Daniel Shapira <daniel@twistlock.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
In rtl8139_do_receive(), we try to assign size_ to size which converts
from size_t to integer. This will cause troubles when size_ is greater
INT_MAX, this will lead a negative value in size and it can then pass
the check of size < MIN_BUF_SIZE which may lead out of bound access of
for both buf and buf1.
Fixing by converting the type of size to size_t.
CC: qemu-stable@nongnu.org
Reported-by: Daniel Shapira <daniel@twistlock.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
In ne2000_receive(), we try to assign size_ to size which converts
from size_t to integer. This will cause troubles when size_ is greater
INT_MAX, this will lead a negative value in size and it can then pass
the check of size < MIN_BUF_SIZE which may lead out of bound access of
for both buf and buf1.
Fixing by converting the type of size to size_t.
CC: qemu-stable@nongnu.org
Reported-by: Daniel Shapira <daniel@twistlock.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Before, we did not clear callback like handle_output when delete
the virtqueue which may result be segmentfault.
The scene is as follows:
1. Start a vm with multiqueue vhost-net,
2. then we write VIRTIO_PCI_GUEST_FEATURES in PCI configuration to
triger multiqueue disable in this vm which will delete the virtqueue.
In this step, the tx_bh is deleted but the callback virtio_net_handle_tx_bh
still exist.
3. Finally, we write VIRTIO_PCI_QUEUE_NOTIFY in PCI configuration to
notify the deleted virtqueue. In this way, virtio_net_handle_tx_bh
will be called and qemu will be crashed.
Although the way described above is uncommon, we had better reinforce it.
CC: qemu-stable@nongnu.org
Signed-off-by: liujunjie <liujunjie23@huawei.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This diagram make user better understand COLO.
Suggested by Markus Armbruster.
Signed-off-by: Zhang Chen <zhangckid@gmail.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
COLO thread may sleep at qemu_sem_wait(&s->colo_checkpoint_sem),
while failover works begin, It's better to wakeup it to quick
the process.
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Notify all net filters about the checkpoint and failover event.
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
After one round of checkpoint, the states between PVM and SVM
become consistent, so it is unnecessary to adjust the sequence
of net packets for old connections, besides, while failover
happens, filter-rewriter will into failover mode that needn't
handle the new TCP connection.
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Zhang Chen <zhangckid@gmail.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
