- 06 Aug, 2015 1 commit
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Stefan Hajnoczi authored
If mirror has more free buffers than IOV_MAX, preadv(2)/pwritev(2) EINVAL failures may be encountered. It is possible to trigger this by setting granularity to a low value like 8192. This patch stops appending chunks once IOV_MAX is reached. The spurious EINVAL failure can be reproduced with a qcow2 image file and the following QMP invocation: qmp.command('drive-mirror', device='virtio0', target='/tmp/r7.s1', granularity=8192, sync='full', mode='absolute-paths', format='raw') While the guest is running dd if=/dev/zero of=/var/tmp/foo oflag=direct bs=4k. Cc: Jeff Cody <jcody@redhat.com> Signed-off-by:Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by:
Paolo Bonzini <pbonzini@redhat.com> Message-id: 1435761950-26714-1-git-send-email-stefanha@redhat.com Signed-off-by:
Jeff Cody <jcody@redhat.com>
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- 27 Jul, 2015 1 commit
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Fam Zheng authored
Drop .can_receive and move the semantics into minimac2_rx, by returning 0. That is once minimac2_rx returns 0, incoming packets will be queued until the queue is explicitly flushed. We do this when s->regs[R_STATE0] or s->regs[R_STATE1] is changed in minimac2_write. Also drop the unused trace point. Signed-off-by:
Fam Zheng <famz@redhat.com> Reviewed-by:
Jason Wang <jasowang@redhat.com> Reviewed-by:
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- 07 Jul, 2015 7 commits
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Juan Quintela authored
To make sections optional, we need to do it at the beggining of the code. Signed-off-by:
Juan Quintela <quintela@redhat.com> Reviewed-by:
Dr. David Alan Gilbert <dgilbert@redhat.com>
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Juan Quintela authored
This includes a new section that for now just stores the current qemu state. Right now, there are only one way to control what is the state of the target after migration. - If you run the target qemu with -S, it would start stopped. - If you run the target qemu without -S, it would run just after migration finishes. The problem here is what happens if we start the target without -S and there happens one error during migration that puts current state as -EIO. Migration would ends (notice that the error happend doing block IO, network IO, i.e. nothing related with migration), and when migration finish, we would just "continue" running on destination, probably hanging the guest/corruption data, whatever. Signed-off-by:
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Dr. David Alan Gilbert authored
Use the order of incoming RAMBlocks from the source to record an index number; that then allows us to sort the destination local RAMBlock list to match the source. Now that the RAMBlocks are known to be in the same order, this simplifies the RDMA Registration step which previously tried to match RAMBlocks based on offset (which isn't guaranteed to match). Looking at the existing compress code, I think it was erroneously relying on an assumption of matching ordering, which this fixes. Signed-off-by:
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Dr. David Alan Gilbert authored
In the next patch we remove the hash on the destination, rdma_delete_block does two things with the hash which can be avoided: a) The caller passes the offset and rdma_delete_block looks it up in the hash; fixed by getting the caller to pass the block b) The hash gets recreated after deletion; fixed by making that conditional on the hash being initialised. While this function is currently only used during cleanup, Michael asked that we keep it general for future dynamic block registration work. Signed-off-by: -
Dr. David Alan Gilbert authored
We need the names of RAMBlocks as they're loaded for RDMA, reuse a slightly modified ram_control_load_hook: a) Pass a 'data' parameter to use for the name in the block-reg case b) Only some hook types now require the presence of a hook function. Signed-off-by: -
Dr. David Alan Gilbert authored
In a later patch the block name will be used to match up two views of the block list. Keep a copy of the block name with the local block list. (At some point it could be argued that it would be best just to let migration see the innards of RAMBlock and avoid the need to use foreach). Signed-off-by:
Michael R. Hines <mrhines@us.ibm.com> Signed-off-by:
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Dr. David Alan Gilbert authored
A couple of typo fixes. Signed-off-by:
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- 06 Jul, 2015 1 commit
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Eric Auger authored
This patch aims at optimizing IRQ handling using irqfd framework. Instead of handling the eventfds on user-side they are handled on kernel side using - the KVM irqfd framework, - the VFIO driver virqfd framework. the virtual IRQ completion is trapped at interrupt controller This removes the need for fast/slow path swap. Overall this brings significant performance improvements. Signed-off-by:
Alvise Rigo <a.rigo@virtualopensystems.com> Signed-off-by:
Eric Auger <eric.auger@linaro.org> Reviewed-by:
Alex Bennée <alex.bennee@linaro.org> Tested-by:
Vikram Sethi <vikrams@codeaurora.org> Acked-by:
Peter Maydell <peter.maydell@linaro.org> Signed-off-by:
Alex Williamson <alex.williamson@redhat.com>
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- 15 Jun, 2015 2 commits
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Kővágó, Zoltán authored
Signed-off-by:
Kővágó, Zoltán <DirtY.iCE.hu@gmail.com> Signed-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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Kővágó, Zoltán authored
Signed-off-by:
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- 12 Jun, 2015 3 commits
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Dr. David Alan Gilbert authored
Split qemu_savevm_state_begin to: qemu_savevm_state_header That writes the initial file header. qemu_savevm_state_begin That sets up devices and does the first device pass. Used later in postcopy. Signed-off-by:Amit Shah <amit.shah@redhat.com> Reviewed-by:
David Gibson <david@gibson.dropbear.id.au> Reviewed-by:
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Juan Quintela authored
Now, everything is in place. Signed-off-by:
Eric Blake <eblake@redhat.com>
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Juan Quintela authored
For historic reasons, ram migration have been on arch_init.c. Just split it into migration/ram.c, the same that happened with block.c. There is only code movement, no changes altogether. Signed-off-by:
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- 11 Jun, 2015 1 commit
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Hervé Poussineau authored
Remove also unneeded debug logs. Signed-off-by:
Hervé Poussineau <hpoussin@reactos.org> Reviewed-by:
Aurelien Jarno <aurelien@aurel32.net> Signed-off-by:
Leon Alrae <leon.alrae@imgtec.com>
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- 10 Jun, 2015 3 commits
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Gerd Hoffmann authored
This patch adds the core code for virtio gpu emulation, covering 2d support. Written by Dave Airlie and Gerd Hoffmann. Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
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Gabriel L. Somlo authored
Exit with an error (instead of simply logging a trace event) whenever the same fw_cfg file name is added multiple times via one of the fw_cfg_add_file[_callback]() host-side API calls. Signed-off-by:
Gabriel Somlo <somlo@cmu.edu> Reviewed-by:
Laszlo Ersek <lersek@redhat.com> Signed-off-by:
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Gabriel L. Somlo authored
From this point forward, any guest-side writes to the fw_cfg data register will be treated as no-ops. This patch also removes the unused host-side API function fw_cfg_add_callback(), which allowed the registration of a callback to be executed each time the guest completed a full overwrite of a given fw_cfg data item. Signed-off-by:
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- 08 Jun, 2015 2 commits
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Eric Auger authored
This patch adds the code requested to assign interrupts to a guest. The interrupts are mediated through user handled eventfds only. Signed-off-by:
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Eric Auger authored
Minimal VFIO platform implementation supporting register space user mapping but not IRQ assignment. Signed-off-by:
Kim Phillips <kim.phillips@linaro.org> Signed-off-by:
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- 03 Jun, 2015 1 commit
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Alexey Kardashevskiy authored
This is to reduce VIO noise while debugging PCI DMA. Signed-off-by:
Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by:
Alexander Graf <agraf@suse.de>
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- 29 May, 2015 1 commit
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Shannon Zhao authored
Introduce a preliminary framework in virt-acpi-build.c with the main ACPI build functions. It exposes the generated ACPI contents to guest over fw_cfg. The required ACPI v5.1 tables for ARM are: - RSDP: Initial table that points to XSDT - RSDT: Points to FADT GTDT MADT tables - FADT: Generic information about the machine - GTDT: Generic timer description table - MADT: Multiple APIC description table - DSDT: Holds all information about system devices/peripherals, pointed by FADT Signed-off-by:
Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by:
Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by:
Igor Mammedov <imammedo@redhat.com> Message-id: 1432522520-8068-5-git-send-email-zhaoshenglong@huawei.com Signed-off-by:
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- 27 Apr, 2015 2 commits
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Zhu Guihua authored
When memory hot unplug fails, this patch adds support to send QMP event to notify mgmt about this failure. Reviewed-by:
Zhu Guihua <zhugh.fnst@cn.fujitsu.com> Reviewed-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Zhu Guihua authored
- implements QEMU hardware part of memory hot unplug protocol described at "docs/spec/acpi_mem_hotplug.txt" - handles memory remove notification event - handles device eject notification Reviewed-by:
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- 10 Mar, 2015 1 commit
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David Hildenbrand authored
This patch adds tracing code for all SIGP orders (including the destination vcpu and the resulting condition code). Reviewed-by:
Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by:
David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-6-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com>
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- 04 Mar, 2015 1 commit
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zhanghailiang authored
Add some trace events for easier debugging Signed-off-by:
zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by:
Luiz Capitulino <lcapitulino@redhat.com>
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- 02 Mar, 2015 1 commit
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Dr. David Alan Gilbert authored
It looks like the dtrace trace code gets upset if you have trace names with __ in, which the migration/rdma.c code does. Rename the functions and the associated traces. Fixes: 733252deSigned-off-by:
Andreas Färber <afaerber@suse.de> Reviewed-by:
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- 10 Feb, 2015 4 commits
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Don Koch authored
Signed-off-by:
Don Koch <dkoch@verizon.com> Signed-off-by:
Michael Tokarev <mjt@tls.msk.ru>
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Don Koch authored
Add trace calls. Convert some #ifdef DEBUG printfs to trace. Signed-off-by:
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Don Koch authored
Signed-off-by:
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Don Koch authored
Signed-off-by:
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- 06 Feb, 2015 1 commit
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Peter Lieven authored
this patch finally introduces multiread support to virtio-blk. While multiwrite support was there for a long time, read support was missing. The complete merge logic is moved into virtio-blk.c which has been the only user of request merging ever since. This is required to be able to merge chunks of requests and immediately invoke callbacks for those requests. Secondly, this is required to switch to direct invocation of coroutines which is planned at a later stage. The following benchmarks show the performance of running fio with 4 worker threads on a local ram disk. The numbers show the average of 10 test runs after 1 run as warmup phase. | 4k | 64k | 4k MB/s | rd seq | rd rand | rd seq | rd rand | wr seq | wr rand --------------+--------+---------+--------+---------+--------+-------- master | 1221 | 1187 | 4178 | 4114 | 1745 | 1213 multiread | 1829 | 1189 | 4639 | 4110 | 1894 | 1216 Signed-off-by:Peter Lieven <pl@kamp.de> Signed-off-by:
Kevin Wolf <kwolf@redhat.com>
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- 05 Feb, 2015 2 commits
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Dr. David Alan Gilbert authored
Turn all the D/DD/DDDPRINTFs into trace events Turn most of the fprintf(stderr, into error_report Signed-off-by:
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Dr. David Alan Gilbert authored
Mostly on the load side, so that when we get a complaint about a migration failure we can figure out what it didn't like. Signed-off-by:
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- 26 Jan, 2015 1 commit
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Don Koch authored
Signed-off-by:
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- 20 Jan, 2015 1 commit
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Paul Durrant authored
The ioreq-server API added to Xen 4.5 offers better security than the existing Xen/QEMU interface because the shared pages that are used to pass emulation request/results back and forth are removed from the guest's memory space before any requests are serviced. This prevents the guest from mapping these pages (they are in a well known location) and attempting to attack QEMU by synthesizing its own request structures. Hence, this patch modifies configure to detect whether the API is available, and adds the necessary code to use the API if it is. Signed-off-by:
Paul Durrant <paul.durrant@citrix.com> Signed-off-by:
Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by:
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- 22 Dec, 2014 3 commits
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Eric Auger authored
A new common module is created. It implements all functions that have no device specificity (PCI, Platform). This patch only consists in move (no functional changes) Signed-off-by:
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Eric Auger authored
Signed-off-by:
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Eric Auger authored
vfio_get_device now takes a VFIODevice as argument. The function is split into 2 parts: vfio_get_device which is generic and vfio_populate_device which is bus specific. 3 new fields are introduced in VFIODevice to store dev_info. vfio_put_base_device is created. Signed-off-by:
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