This new interface lets spice server inform the guest whether
(a) a client is connected
(b) what capabilities the client has
There is a fixed number (464) of bits reserved for capabilities, and
when the capabilities bits change, the QXL_INTERRUPT_CLIENT interrupt
is generated.
Signed-off-by: Soren Sandmann <ssp@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Revision bumped to 4 for new IO support, enabled for spice-server >=
0.11.1. New io enabled if revision is 4. Revision can be set to 4.
[ kraxel: 3 continues to be the default revision. Once we have a new
stable spice-server release and the qemu patches to enable
the new bits merged we'll go flip the switch and make rev4
the default ]
This io calls the corresponding new spice api
spice_qxl_monitors_config_async to let spice-server read a new guest set
monitors config and notify the client.
On migration reissue spice_qxl_monitors_config_async.
RHBZ: 770842
Signed-off-by: Alon Levy <alevy@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
fixup
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Added all spice options to the help string. This can be used by libvirt
to determine which spice related features are supported by qemu.
Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The seamless-migration flag is required in order to identify
whether libvirt supports the new QEVENT_SPICE_MIGRATE_COMPLETED or not
(by default the flag is off).
New libvirt versions that wait for QEVENT_SPICE_MIGRATE_COMPLETED should turn on this flag.
When this flag is off, spice fallbacks to its old migration method, which
can result in data loss.
Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The flag is 'true' when spice migration has completed on the src side.
It is needed for a case where libvirt dies before migration completes
and it misses the event QEVENT_SPICE_MIGRATE_COMPLETED.
When libvirt is restored and queries the migration status, it also needs
to query spice and check if its migration has completed.
Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When migrating, libvirt queries the migration status, and upon migration
completions, it closes the migration src. On the other hand, when
migration is completed, spice transfers data from the src to destination
via the client. This data is required for keeping the spice session
after migration, without suffering from data loss and inconsistencies.
In order to allow this data transfer, we add QEVENT for signaling
libvirt that spice migration has completed, and libvirt needs to wait
for this event before quitting the src process.
Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Spice server needs to know about the vm state in order to prevent
attempts to write to devices when they are stopped, mainly during
the non-live stage of migration.
Instead, spice will take care of restoring this writes, on the migration
target side, after migration completes.
Signed-off-by: Yonit Halperin <yhalperi@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When parsing its command line parameters, spice aborts when it
finds unexpected values, except for the 'streaming-video' option.
This happens because the parsing of the parameters for this option
is done using the 'name2enum' helper, which does not error out
on unknown values. Using the 'parse_name' helper makes sure we
error out in this case. Looking at git history, the use of
'name2enum' instead of 'parse_name' seems to have been an oversight,
so let's change to that now.
Fixes rhbz#831708
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
QEMU will hang when fed the following command-line
qemu-system-mips -kernel vmlinux-2.6.32-5-4kc-malta -append "console=ttyS0" -nographic -net none
The -net none is important otherwise it seems some events are generated
causing the things to work. When it doesn't work, the guest hangs when
measuring the CPU frequency, after the following line:
[ 0.000000] NR_IRQS:256
Pressing a key on the serial port unblocks it, hinting that the problem
is due to the recent elimination of the 1 second timeout in the main
loop.
The problem is that because init_timer_alarm sets the timer's pending
flag to true, the alarm timer is never armed until after the first time
through the main loop. Thus the bug started when QEMU started testing
the pending flag in qemu_mod_timer (commit 1828be3, more alarm timer
cleanup, 2010-03-10).
But actually, it isn't true at all that a timer is pending when the
alarm timer is created, and the real bug has been latent forever: the
fix is to remove the bogus setting of pending flag.
Reported-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This prevents guest from proceeding with uninitialised garbage returned
from unimplemented simcalls.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
ccc-analyzer reports this warning:
console.c:1090:29: warning: Dereference of null pointer
if (active_console->cursor_timer) {
^
Function console_select allows active_console to be NULL,
but would crash when accessing cursor_timer. Fix this.
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* kraxel/usb.61:
uas: move transfer kickoff
ehci: Fix interrupt endpoints no longer working
ehci: handle TD deactivation of inflight packets
ehci: add ehci_cancel_queue()
ehci: simplify ehci_state_executing
ehci: Remove unnecessary ehci_flush_qh call
ehci: Schedule async-bh when IAAD bit gets set
ehci: Fix NULL ptr deref when unplugging an USB dev with an iso stream active
usb: unique packet ids
usb: Halt ep queue en cancel pending packets on a packet error
fix info qtree indention
* kwolf/for-anthony:
qemu-iotests: add backing file smaller than image test case
stream: complete early if end of backing file is reached
qed: refuse unaligned zero writes with a backing file
Kick next scsi transfer from request release callback instead of command
completion callback, otherwise we might get stuck in case scsi_req_unref()
doesn't release the request instantly due to someone else holding a
reference too.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
One of the recent changes (likely the addition of queuing support) has broken
interrupt endpoints, this patch fixes this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
ehci_state_executing does not need to check for p->usb_status == USB_RET_ASYNC
or USB_RET_PROCERR, since ehci_execute_complete already does a similar check
and will trigger an assert if either value is encountered.
USB_RET_ASYNC should never be the packet status when execute_complete runs
for obvious reasons, and USB_RET_PROCERR is only used by ehci_state_execute /
ehci_execute not by ehci_state_executing / ehci_execute_complete.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
ehci_qh_do_overlay() already calls ehci_flush_qh() before it returns, calling
it twice is useless.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
After the "ehci: Print a warning when a queue unexpectedly contains packets
on cancel" commit. Under certain reproducable conditions I was getting the
following message: "EHCI: Warning queue not empty on queue reset".
After aprox. 8 hours of debugging I've finally found the cause. The Linux EHCI
driver has an IAAD watchdog, to work around certain EHCI hardware sometimes
not acknowledging the doorbell at all. This watchdog has a timeout of 10 ms,
which is less then the time between 2 runs through the async schedule when
async_stepdown is at its highest value.
Thus the watchdog can trigger, after which Linux clears the IAAD bit and
re-uses the QH. IOW we were not properly detecting the unlink of the qh, due
to us missing (ignoring for more then 10 ms) the IAAD command, which triggered
the warning.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This patch adds IDs to usb packets. Those IDs are (a) supposed to be
unique for the lifecycle of a packet (from packet setup until the packet
is either completed or canceled) and (b) stable across migration.
uhci, ohci, ehci and xhci use the guest physical address of the transfer
descriptor for this.
musb needs a different approach because there is no transfer descriptor.
But musb also doesn't support pipelining, so we have never more than one
packet per endpoint in flight. So we go create an ID based on endpoint
and device address.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
For controllers which queue up more then 1 packet at a time, we must halt the
ep queue, and inside the controller code cancel all pending packets on an
error.
There are multiple reasons for this:
1) Guests expect the controllers to halt ep queues on error, so that they
get the opportunity to cancel transfers which the scheduled after the failing
one, before processing continues
2) Not cancelling queued up packets after a failed transfer also messes up
the controller state machine, in the case of EHCI causing the following
assert to trigger: "assert(p->qtdaddr == q->qtdaddr)" at hcd-ehci.c:2075
3) For bulk endpoints with pipelining enabled (redirection to a real USB
device), we must cancel all the transfers after this a failed one so that:
a) If they've completed already, they are not processed further causing more
stalls to be reported, originating from the same failed transfer
b) If still in flight, they are cancelled before the guest does
a clear stall, otherwise the guest and device can loose sync!
Note this patch only touches the ehci and uhci controller changes, since AFAIK
no other controllers actually queue up multiple transfer. If I'm wrong on this
other controllers need to be updated too!
Also note that this patch was heavily tested with the ehci code, where I had
a reproducer for a device causing a transfer to fail. The uhci code is not
tested with actually failing transfers and could do with a thorough review!
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Without the patch bus properties are are not in line with the other
properties:
[ ... ]
dev: fw_cfg, id ""
ctl_iobase = 0x510
data_iobase = 0x511
irq 0
mmio ffffffffffffffff/0000000000000002
mmio ffffffffffffffff/0000000000000001
[ ... ]
With the patch applied everything is lined up properly:
[ ... ]
dev: fw_cfg, id ""
ctl_iobase = 0x510
data_iobase = 0x511
irq 0
mmio ffffffffffffffff/0000000000000002
mmio ffffffffffffffff/0000000000000001
[ ... ]
Needed to make the autotest qtree parser happy.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Commit ef8621b1a3 added an include
file which is not available for MinGW compilations.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The facility to use/unuse vectors dynamically is helpful
for virtio but little else: everyone just seems to use
vectors in their init function.
Avoid clearing msix vector use info on reset and load.
For virtio, clear it explicitly.
This should fix regressions reported with ivshmem - though
I didn't test this, I verified that virtio keeps
working like it did.
Tested-by: Cam Macdonell <cam@cs.ualberta.ca>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Support get/set of new PV EOI MSR, for migration.
Add an optional section for MSR value - send it
out in case MSR was changed from the default value (0).
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Update linux-headers to version present in Linux 3.6-rc3.
Header asm-x96_64/kvm_para.h update is needed for the new PV EOI
feature.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We have a problem with how we handle migration with KVM paravirt features.
We unconditionally enable paravirt features regardless of whether we know how
to migrate them.
We also don't tie paravirt features to specific machine types so an old QEMU on
a new kernel would expose features that never existed.
The 1.2 cycle is over and as things stand, migration is broken. Michael has
another series that adds support for migrating PV EOI and attempts to make it
work correctly for different machine types.
After speaking with Michael on IRC, we agreed to take this patch plus 1 & 4
from his series. This makes sure QEMU can migrate PV EOI if it's enabled, but
does not enable it by default.
This also means that we won't unconditionally enable new features for guests
future proofing us from this happening again in the future.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The bug causes Windows + OVMF hang after reboot since OVMF
checks PMREGMISC to see if IO space is enabled and skip
configuration if it is.
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Clang reports this warning:
Null pointer passed as an argument to a 'nonnull' parameter
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The last argument of find_portio is "write", so this must be true here.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
setup_ioeventfds() is unnecessary and actually causes a segfault when used
ioeventfd=on is used on the command-line. Since ioeventfds are handled within
the memory API, it can be removed.
Signed-off-by: Cam Macdonell <cam@cs.ualberta.ca>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add the missing .class_size definition to the arm_gic_info TypeInfo.
This fixes the memory corruption and possible segfault that otherwise
results when the class struct is allocated at too small a size and
the class init function writes off the end of it.
Reported-by: Adam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This new test case checks that streaming completes successfully when the
backing file is smaller than the image file.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
It is possible to create an image that is larger than its backing file.
Reading beyond the end of the backing file produces zeroes if no writes
have been made to those sectors in the image file.
This patch finishes streaming early when the end of the backing file is
reached. Without this patch the block job hangs and continually tries
to stream the first sectors beyond the end of the backing file.
To reproduce the hung block job bug:
$ qemu-img create -f qcow2 backing.qcow2 128M
$ qemu-img create -f qcow2 -o backing_file=backing.qcow2 image.qcow2 6G
$ qemu -drive if=virtio,cache=none,file=image.qcow2
(qemu) block_stream virtio0
(qemu) info block-jobs
The qemu-iotests 030 streaming test still passes.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Zero writes have cluster granularity in QED. Therefore they can only be
used to zero entire clusters.
If the zero write request leaves sectors untouched, zeroing the entire
cluster would obscure the backing file. Instead return -ENOTSUP, which
is handled by block.c:bdrv_co_do_write_zeroes() and falls back to a
regular write.
The qemu-iotests 034 test cases covers this scenario.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* bonzini/scsi-next:
iscsi: Set number of blocks to 0 for blank CDROM devices
scsi: more fixes to properties for passthrough devices
esp: support 24-bit DMA
megasas: Add 'hba_serial' property
* riku/linux-user-for-upstream:
linux-user: Clarify "Unable to reserve guest address space" error
linux-user: fix emulation of getdents
linux-user: arg_table need not have global scope
The CONFIG_TCG_PASS_AREG0 code for calling ld/st helpers was
broken in that it did not respect the ABI requirement that 64
bit values were passed in even-odd register pairs. The simplest
way to fix this is to implement some new utility functions
for marshalling function arguments into the correct registers
and stack, so that the code which sets up the address and
data arguments does not need to care whether there has been
a preceding env argument.
Based on commit 9716ef3b for ARM by Peter Maydell.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Søren Sandmann Pedersen