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* fw_cfg: insert fw_cfg file blobs via qemu cmdlineGabriel L. Somlo2015-06-101-0/+21
| | | | | | | | | | | | | | | | | Allow user supplied files to be inserted into the fw_cfg device before starting the guest. Since fw_cfg_add_file() already disallows duplicate fw_cfg file names, qemu will exit with an error message if the user supplies multiple blobs with the same fw_cfg file name, or if a blob name collides with a fw_cfg name programmatically added from within the QEMU source code. A warning message will be printed if the fw_cfg item name does not begin with the prefix "opt/", which is recommended for external, user provided blobs. Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell2015-06-041-0/+58
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pc, acpi, virtio, tpm This includes pxb support by Marcel, as well as multiple enhancements all over the place. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Thu Jun 4 11:51:02 2015 BST using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" * remotes/mst/tags/for_upstream: (28 commits) vhost: logs sharing hw/acpi: piix4_pm_init(): take fw_cfg object no more hw/acpi: move "etc/system-states" fw_cfg file from PIIX4 to core hw/acpi: acpi_pm1_cnt_init(): take "disable_s3" and "disable_s4" pc-dimm: don't assert if pc-dimm alignment != hotpluggable mem range size docs: Add PXB documentation apci: fix PXB behaviour if used with unsupported BIOS hw/pxb: add numa_node parameter hw/pci: add support for NUMA nodes hw/pxb: add map_irq func hw/pci: inform bios if the system has extra pci root buses hw/pci: introduce PCI Expander Bridge (PXB) hw/pci: removed 'rootbus nr is 0' assumption from qmp_pci_query hw/acpi: remove from root bus 0 the crs resources used by other buses. hw/acpi: add _CRS method for extra root busses hw/apci: add _PRT method for extra PCI root busses hw/acpi: add support for i440fx 'snooping' root busses hw/pci: extend PCI config access to support devices behind PXB hw/i386: query only for q35/pc when looking for pci host bridge hw/pci: made pci_bus_num a PCIBusClass method ... Conflicts: hw/i386/pc_piix.c Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * docs: Add PXB documentationMarcel Apfelbaum2015-06-031-0/+58
| | | | | | | | | | | | | | Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Laszlo Ersek <lersek@redhat.com>
* | Merge remote-tracking branch 'remotes/agraf/tags/signed-ppc-for-upstream' ↵Peter Maydell2015-06-041-0/+287
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into staging Patch queue for ppc - 2015-06-03 Highlights this time around: - sPAPR: endian fixes, speedups, bug fixes, hotplug basics - add default ram size capability for machines (sPAPR defaults to 512MB now) # gpg: Signature made Wed Jun 3 22:59:09 2015 BST using RSA key ID 03FEDC60 # gpg: Good signature from "Alexander Graf <agraf@suse.de>" # gpg: aka "Alexander Graf <alex@csgraf.de>" * remotes/agraf/tags/signed-ppc-for-upstream: (40 commits) softmmu: support up to 12 MMU modes tcg: add TCG_TARGET_TLB_DISPLACEMENT_BITS tci: do not use CPUArchState in tcg-target.h Add David Gibson for sPAPR in MAINTAINERS file pseries: Enable in-kernel H_LOGICAL_CI_{LOAD, STORE} implementations spapr: override default ram size to 512MB machine: add default_ram_size to machine class spapr_pci: emit hotplug add/remove events during hotplug spapr_pci: enable basic hotplug operations pci: make pci_bar useable outside pci.c spapr_pci: create DRConnectors for each PCI slot during PHB realize spapr_pci: add dynamic-reconfiguration option for spapr-pci-host-bridge spapr_drc: add spapr_drc_populate_dt() spapr_events: event-scan RTAS interface spapr_events: re-use EPOW event infrastructure for hotplug events spapr_rtas: add ibm, configure-connector RTAS interface spapr: add rtas_st_buffer_direct() helper spapr_rtas: add get-sensor-state RTAS interface spapr_rtas: add set-indicator RTAS interface spapr_rtas: add get/set-power-level RTAS interfaces ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * | docs: add sPAPR hotplug/dynamic-reconfiguration documentationMichael Roth2015-06-031-0/+287
| |/ | | | | | | | | | | | | | | | | | | | | | | This adds a general overview of hotplug/dynamic-reconfiguration for sPAPR/pSeries guest. As specified in PAPR+ v2.7. Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
* | docs/writing-qmp-commands: fix a typoChen Hanxiao2015-06-031-1/+1
|/ | | | | | | s/interation/iteration Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* vhost-user: add multi queue supportOuyang Changchun2015-06-011-0/+5
| | | | | | | | | | | | | Based on patch by Nikolay Nikolaev: Vhost-user will implement the multi queue support in a similar way to what vhost already has - a separate thread for each queue. To enable the multi queue functionality - a new command line parameter "queues" is introduced for the vhost-user netdev. Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* qapi: Turn generators' mandatory option -i into an argumentMarkus Armbruster2015-05-141-5/+5
| | | | | | | | | Mandatory option is silly, and the error handling is missing: the programs crash when -i isn't supplied. Make it an argument, and check it properly. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* doc: fix qmp event typeMichael S. Tsirkin2015-05-141-2/+2
| | | | | | | | | | | Event name for hot unplug errors was wrong. Make doc match code. Cc: Zhu Guihua <zhugh.fnst@cn.fujitsu.com> Reported-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* Merge remote-tracking branch 'remotes/stefanha/tags/net-pull-request' into ↵Peter Maydell2015-05-122-0/+1010
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | staging # gpg: Signature made Mon May 11 16:25:58 2015 BST using RSA key ID 81AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" * remotes/stefanha/tags/net-pull-request: rocker: timestamp on the debug logs helps correlate with events in the VM MAINTAINERS: add rocker rocker: add tests rocker: add new rocker switch device pci: add network device class 'other' for network switches pci: add rocker device ID rocker: add register programming guide virtio-net: use qemu_mac_strdup_printf net: add MAC address string printer Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * pci: add rocker device IDScott Feldman2015-05-111-0/+1
| | | | | | | | | | | | | | Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Message-id: 1426306173-24884-5-git-send-email-sfeldma@gmail.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| * rocker: add register programming guideScott Feldman2015-05-111-0/+1009
| | | | | | | | | | | | | | | | | | | | | | This is the register programming guide for the Rocker device. It's intended for driver writers and device writers. It covers the device's PCI space, the register set, DMA interface, and interrupts. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Message-id: 1426306173-24884-4-git-send-email-sfeldma@gmail.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* | Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell2015-05-113-7/+91
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pc, virtio enhancements Memory hot-unplug support for pc, MSI-X mapping update speedup for virtio-pci, misc refactorings and bugfixes. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Mon May 11 08:23:43 2015 BST using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" * remotes/mst/tags/for_upstream: (28 commits) acpi: update expected files for memory unplug virtio-scsi: Move DEFINE_VIRTIO_SCSI_FEATURES to virtio-scsi virtio-net: Move DEFINE_VIRTIO_NET_FEATURES to virtio-net pci: Merge pci_nic_init() into pci_nic_init_nofail() acpi: add a missing backslash to the \_SB scope. qmp-event: add event notification for memory hot unplug error acpi: add hardware implementation for memory hot unplug acpi: fix "Memory device control fields" register acpi: extend aml_field() to support UpdateRule acpi, mem-hotplug: add unplug cb for memory device acpi, mem-hotplug: add unplug request cb for memory device acpi, mem-hotplug: add acpi_memory_slot_status() to get MemStatus docs: update documentation for memory hot unplug virtio: coding style tweak pci: remove hard-coded bar size in msix_init_exclusive_bar() virtio-pci: speedup MSI-X masking and unmasking virtio: introduce vector to virtqueues mapping virtio-ccw: using VIRTIO_NO_VECTOR instead of 0 for invalid virtqueue monitor: check return value of qemu_find_net_clients_except() monitor: replace the magic number 255 with MAX_QUEUE_NUM ... Conflicts: hw/s390x/s390-virtio-bus.c [PMM: fixed conflict in s390_virtio_scsi_properties and s390_virtio_net_properties arrays; since the result of the two conflicting patches is to empty the property arrays completely, the conflict resolution is to remove them entirely.] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * | qmp-event: add event notification for memory hot unplug errorZhu Guihua2015-04-271-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When memory hot unplug fails, this patch adds support to send QMP event to notify mgmt about this failure. Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | acpi: add hardware implementation for memory hot unplugZhu Guihua2015-04-271-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - 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: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | acpi: fix "Memory device control fields" registerZhu Guihua2015-04-271-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 0 bit in Memory device control fields must be cleared before writing to register. But now this field isn't cleared when other fields are written. To solve this bug, This patch fixes UpdateRule to WriteAsZeros in "Memory device control fields" register. Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| * | docs: update documentation for memory hot unplugZhu Guihua2015-04-272-4/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add specification about how to use memory hot unplug, and add a flow diagram to explain memory hot unplug process. Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* | | docs: update BLOCK_IMAGE_CORRUPTED documentationAlberto Garcia2015-05-081-2/+3
| |/ |/| | | | | | | | | | | | | | | | | Label the "size" and "offset" fields in BLOCK_IMAGE_CORRUPTED as optional, and clarify that the latter refers to the host's offset into the image. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* | docs: Add a doc about multiple thread compressionLiang Li2015-05-061-0/+149
| | | | | | | | | | | | | | | | | | | | | | Give some details about the multiple thread (de)compression and how to use it in live migration. Signed-off-by: Liang Li <liang.z.li@intel.com> Signed-off-by: Yang Zhang <yang.z.zhang@intel.com> Reviewed-by: Dr.David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
* | qapi: Tweak doc references to QMP when QGA is also meantEric Blake2015-05-051-77/+82
| | | | | | | | | | | | | | | | | | | | | | We have more than one qapi schema in use by more than one protocol. Add a new term 'Client JSON Protocol' for use throughout the document, to avoid confusion on whether something refers only to QMP and not QGA. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* | qapi: Document 'struct' metatypeEric Blake2015-05-051-29/+29
| | | | | | | | | | | | | | | | | | | | | | | | Referring to "type" as both a meta-type (built-in, enum, union, alternate, or struct) and a specific type (the name that the schema uses for declaring structs) is confusing. Now that the generator accepts 'struct' as a synonym for 'type', update all documentation to use saner wording. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* | qapi: Document new 'alternate' meta-typeEric Blake2015-05-051-21/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The next patch will quit special-casing "'union':'Foo', 'discriminator':{}" and instead use "'alternate':'Foo'". Separating docs from implementation makes it easier to focus on wording without holding up code. In particular, making alternate a separate type makes for a nice type hierarchy: /-------- meta-type ------\ / | \ simple types alternate complex types | | | | built-in enum type(struct) union | \ / / \ numeric string simple flat A later patch will then clean up 'type' vs. 'struct' confusion. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* | qapi: Document type-safety considerationsEric Blake2015-05-052-122/+414
| | | | | | | | | | | | | | | | | | | | | | Go into more details about the various types of valid expressions in a qapi schema, including tweaks to document fixes being done later in the current patch series. Also fix some stale and missing documentation in the QMP specification. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* | qapi: Add copyright declaration on docsEric Blake2015-05-052-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While our top-level COPYING with its GPLv2+ license applies to any documentation file that omits explicit instructions, these days it's better to be a good example of calling out our intentions. Correct use of GPL requires the use of a copyright statement, so I'm adding notice to two QAPI documents, by attributing these files to the initial authors and major contributors. I used: $ git blame --line-porcelain $file \ | sed -n 's/^author //p' | sort | uniq -c | sort -rn to determine authorship of these two files. qmp-spec.txt blames entirely to Red Hat (easy, since my contribution falls in that category); while qapi-code-gen.txt has multiple contributors representing multiple entities. But since it was originally supplied by Michael Roth, the notice I added there copies the notice he has used in other files. As there is no intended change in license from the implicit one previously present from the top level, I have not bothered to CC other contributors; if we want to weaken things to something looser (such as LGPL) so that there is no question that someone re-implementing the spec is not forced to use GPL, that would be a different commit. CC: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* | docs/atomics.txt: fix two typosLaszlo Ersek2015-04-301-2/+2
| | | | | | | | | | | | Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* | docs: incremental backup documentationJohn Snow2015-04-281-0/+352
| | | | | | | | | | | | | | | | | | Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1429314609-29776-2-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* | block: add 'node-name' field to BLOCK_IMAGE_CORRUPTEDAlberto Garcia2015-04-281-8/+13
|/ | | | | | | | | | | | Since this event can occur in nodes that cannot have a device name associated, include also a field with the node name. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 147cec5b3594f4bec0cb41c98afe5fcbfb67567c.1428485266.git.berto@igalia.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* fw_cfg: add documentation file (docs/specs/fw_cfg.txt)Gabriel L. Somlo2015-04-141-0/+205
| | | | | | | | | | | This document covers the guest-side hardware interface, as well as the host-side programming API of QEMU's firmware configuration (fw_cfg) device. Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Signed-off-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* docs: add memory-hotplug.txtLuiz Capitulino2015-03-041-0/+76
| | | | | | | | This document describes how to use memory hotplug in QEMU. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Paulo Vital <paulo.vital@profitbricks.com>
* rcu: add g_free_rcuPaolo Bonzini2015-02-161-4/+7
| | | | | | This simplifies calling g_free from an RCU callback. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* docs: clarify memory region lifecyclePaolo Bonzini2015-02-161-16/+58
| | | | | | | Now that objects actually obey the rules, document them. Reviewed-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* rcu: add call_rcuPaolo Bonzini2015-02-021-4/+106
| | | | | | | | | | | | Asynchronous callbacks provided by call_rcu are particularly important for QEMU, because the BQL makes it hard to use synchronize_rcu. In addition, the current RCU implementation is not particularly friendly to multiple concurrent synchronize_rcu callers, making call_rcu even more important. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* rcu: add rcu libraryPaolo Bonzini2015-02-021-0/+285
| | | | | | | | | | | | | | | | | | This includes a (mangled) copy of the liburcu code. The main changes are: 1) removing dependencies on many other header files in liburcu; 2) removing for simplicity the tentative busy waiting in synchronize_rcu, which has limited performance effects; 3) replacing futexes in synchronize_rcu with QemuEvents for Win32 portability. The API is the same as liburcu, so it should be possible in the future to require liburcu on POSIX systems for example and use our copy only on Windows. Among the various versions available I chose urcu-mb, which is the least invasive implementation even though it does not have the fastest rcu_read_{lock,unlock} implementation. The urcu flavor can be changed later, after benchmarking. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* hw: misc, add educational driverJiri Slaby2015-01-261-0/+110
| | | | | | | | | | | I am using qemu for teaching the Linux kernel at our university. I wrote a simple PCI device that can answer to writes/reads, generate interrupts and perform DMA. As I am dragging it locally over 2 years, I am sending it to you now. Signed-off-by: Jiri Slaby <jslaby@suse.cz> [Fix 32-bit compilation. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* vnc: update docs/multiseat.txtGerd Hoffmann2015-01-221-4/+14
| | | | | | | vnc joins the party ;) Also some s/head/seat/ to clarify. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* xbzrle: optimize XBZRLE to decrease the cache missesChenLiang2015-01-151-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Avoid hot pages being replaced by others to remarkably decrease cache misses Sample results with the test program which quote from xbzrle.txt ran in vm:(migrate bandwidth:1GE and xbzrle cache size 8MB) the test program: include <stdlib.h> include <stdio.h> int main() { char *buf = (char *) calloc(4096, 4096); while (1) { int i; for (i = 0; i < 4096 * 4; i++) { buf[i * 4096 / 4]++; } printf("."); } } before this patch: virsh qemu-monitor-command test_vm '{"execute": "query-migrate"}' {"return":{"expected-downtime":1020,"xbzrle-cache":{"bytes":1108284, "cache-size":8388608,"cache-miss-rate":0.987013,"pages":18297,"overflow":8, "cache-miss":1228737},"status":"active","setup-time":10,"total-time":52398, "ram":{"total":12466991104,"remaining":1695744,"mbps":935.559472, "transferred":5780760580,"dirty-sync-counter":271,"duplicate":2878530, "dirty-pages-rate":29130,"skipped":0,"normal-bytes":5748592640, "normal":1403465}},"id":"libvirt-706"} 18k pages sent compressed in 52 seconds. cache-miss-rate is 98.7%, totally miss. after optimizing: virsh qemu-monitor-command test_vm '{"execute": "query-migrate"}' {"return":{"expected-downtime":2054,"xbzrle-cache":{"bytes":5066763, "cache-size":8388608,"cache-miss-rate":0.485924,"pages":194823,"overflow":0, "cache-miss":210653},"status":"active","setup-time":11,"total-time":18729, "ram":{"total":12466991104,"remaining":3895296,"mbps":937.663549, "transferred":1615042219,"dirty-sync-counter":98,"duplicate":2869840, "dirty-pages-rate":58781,"skipped":0,"normal-bytes":1588404224, "normal":387794}},"id":"libvirt-266"} 194k pages sent compressed in 18 seconds. The value of cache-miss-rate decrease to 48.59%. Signed-off-by: ChenLiang <chenliang88@huawei.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Amit Shah <amit.shah@redhat.com>
* pci: move REDHAT_SDHCI device ID to make room for RockerScott Feldman2015-01-031-1/+1
| | | | | | | | | | | The rocker device uses same PCI device ID as sdhci. Since rocker device driver has already been accepted into Linux 3.18, and REDHAT_SDHCI device ID isn't used by any drivers, it's safe to move REDHAT_SDHCI device ID, avoiding conflict with rocker. Signed-off-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* sdhci: Define SDHCI PCI idsKevin O'Connor2014-12-151-0/+2
| | | | | Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Tracing docs fix configure option and descriptionDr. David Alan Gilbert2014-11-181-3/+3
| | | | | | | | | | Fix the example trace configure option. Update the text to say that multiple backends are allowed and what happens when multiple backends are enabled. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-id: 1412691161-31785-1-git-send-email-dgilbert@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell2014-10-301-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | virtio-scsi fixes, the first part of dynamic sysbus devices, MAINTAINERS updates, and AVX512 support. # gpg: Signature made Mon 27 Oct 2014 15:12:13 GMT using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (28 commits) aio / timers: De-document -clock hw/scsi/virtio-scsi.c: fix the "type" use error in virtio_scsi_handle_ctrl virtio-scsi: sense in virtio_scsi_command_complete target-i386: add Intel AVX-512 support get_maintainer.pl: restrict cases where it falls back to --git get_maintainer.pl: move git loop under "if ($email) {" qtest: fix qtest log fd should be initialized before qtest chardev MAINTAINERS: avoid M entries that point to mailing lists MAINTAINERS: add some tests directories MAINTAINERS: Add more TCG files MAINTAINERS: add myself for X86 MAINTAINERS: add Samuel Thibault as usb-serial.c and baum.c maintainer MAINTAINERS: grab more files from Anthony's pile target-i386: warns users when CPU threads>1 for non-Intel CPUs sysbus: Use TYPE_DEVICE GPIO functionality qdev: gpio: Define qdev_pass_gpios() qdev: gpio: Remove qdev_init_gpio_out x1 restriction qdev: gpio: delete NamedGPIOList::out irq: Remove qemu_irq_intercept_out qtest/irq: Rework IRQ interception ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * aio / timers: De-document -clockMarkus Armbruster2014-10-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 6d32717 "aio / timers: Remove alarm timers" has issues: 1. It silently ignores -clock for backward compatibility. Incompatible change: -clock help no longer terminates the program. Tolerable. 2. Failed to update option documentation. In particular, -help still advises users to try -clock help for available timers. Drop all documentation on -clock. 3. The 'query-alarm-clock' example in docs/writing-commands.txt no longer works, and needs to be redone. Can't do that right now, so I just stick in a FIXME. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | docs/qcow2: Limit refcount_order to [0, 6]Max Reitz2014-10-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Specify the upper limit of refcount_order to be 6 (that is, refcount_bits = 64). Any larger value does not make much sense when all offsets, sizes, cluster counts etc. "only" have a width of 64 bit as well, and very large values would be very difficult to support. Therefore, just cap it at the largest reasonable value. Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* | docs/qcow2: Correct refcount_block_entriesMax Reitz2014-10-231-1/+1
|/ | | | | | | | | A refblock entry may have a different size than 16 bits, it may even be smaller than a byte. Correct the refcount_block_entries calculation accordingly. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Rename BlockDriverCompletionFunc to BlockCompletionFuncMarkus Armbruster2014-10-201-1/+1
| | | | | | | | | | I'll use it with block backends shortly, and the name is going to fit badly there. It's a block layer thing anyway, not just a block driver thing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Rename BlockDriverAIOCB* to BlockAIOCB*Markus Armbruster2014-10-201-4/+4
| | | | | | | | | | I'll use BlockDriverAIOCB with block backends shortly, and the name is going to fit badly there. It's a block layer thing anyway, not just a block driver thing. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* vga-pci: add qext region to mmioGerd Hoffmann2014-10-151-0/+9
| | | | | | | | | | | Add a qemu extented register range to the standard vga mmio bar. Right nowe there are two registers: One readonly register returning the size of the region (so we can easily add more registers there if needed) and one endian control register, so guests (especially ppc) can flip the framebuffer endianness as they need it. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
* Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell2014-09-291-0/+161
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Block patches # gpg: Signature made Fri 26 Sep 2014 19:57:52 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: qemu-iotests: Fail test if explicit test case number is unknown block: Validate node-name vpc: fix beX_to_cpu() and cpu_to_beX() confusion docs: add blkdebug block driver documentation block: Catch simultaneous usage of options and their aliases block: Specify -drive legacy option aliases in array block: Improve message for device name clashing with node name qemu-nbd: Destroy the BlockDriverState properly block: Keep DriveInfo alive until BlockDriverState dies blockdev: Disentangle BlockDriverState and DriveInfo creation blkdebug: show an error for invalid event names Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * docs: add blkdebug block driver documentationStefan Hajnoczi2014-09-251-0/+161
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The blkdebug block driver is undocumented. Documenting it is worthwhile since it offers powerful error injection features that are used by qemu-iotests test cases. This document will make it easier for people to learn about and use blkdebug. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* | qapi: Update docs given recent event, spacing fixesEric Blake2014-09-261-20/+80
| | | | | | | | | | | | | | | | | | | | | | | | Commit 21cd70d added event support but didn't document what the generated code looks like. Commit 05dfb26 removed some unwanted spaces in the generated code, but didn't reflect those changes into the documentation. Finally, the docs start with a big disclaimer about QMP not using QAPI yet, which feels rather stale. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* | trace: docs: add trace file descriptionChen Fan2014-09-261-1/+1
|/ | | | | | | | | | | | | | | When user used the trace print command from docs/tracing.txt: ./scripts/simpletrace.py trace-events trace-* the user maybe be misled by the "trace-*", because if user directly copy the comand line to run, there alway print the bored message: "usage: ./scripts/simpletrace.py <trace-events> <trace-file>" then we should describe that the "trace-*" represented. Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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