Changes since version 1.1.1:
System emulation
All targets
* ... QMP error changes go here ...
* File descriptors can be passed to qemu using the new
add-fd/remove-fd QMP commands. It is intended that they can
be used in any place where QEMU would expect a file name.
This is ensured for disk images, support in other parts of
QEMU may still be inconsistent.
ARM
* LPAE (large physical address extensions) are now supported
for the Cortex-A15 CPU; you can now run a vexpress-a15 model
with more than 4GB of RAM
* The new monitor command "dump-guest-memory" creates an ELF
dump of the guest memory.
* New board model: i.MX31
PowerPC
* The pSeries target correctly creates segment size device
tree nodes (fixes odd bugs with HV vs PR KVM)
* The pSeries target implements an IOMMU.
* ... pSeries VGA, USB, etc.? ...
* The E500 target generates its device tree dynamically
* New mpc8544ds -machine option: dumpdtb. This allows to dump
the dynamically generated device tree to a file.
* Emulation for e5500 cores
* PC87312 Super I/O chipset emulation for PReP, adding
parallel port to prep machine
x86
* Support for PCI passthrough is available for Xen
fully-virtualized domains.
* The new monitor command "dump-guest-memory" creates an ELF
dump of the guest memory.
* When using KVM, the in-kernel APIC supports MSI.
* Also when using KVM, new PV EOI feature improves performance
when both host and guest run linux 3.6-rc1 and up. To
enable, add +kvm_pv_eoi to -cpu option, e.g.
-cpu kvm64,+kvm_pv_eoi
* The "cpudef" config file section is being deprecated and may
be removed in v1.3.
Device emulation
* VGA and QXL cards (obtained with -vga std and -vga qxl) have
16 MB of VRAM rather than 8 MB.
* Three new SCSI host bus adapter devices are available:
am53c974 and dc390 emulate respectively an AMD PCI PCscsi
and a Tekram DC-390 device, both of which are supported on
older operating systems including MS DOS 6.2, MS Windows 3.11,
98 SE, NT 3.1 and NT 4.0. megasas emulated an LSI SAS1078 RAID
controller. The next version of SeaBIOS will support booting
from am53c974 and dc390 disks.
* An USB-attached SCSI controller is now available.
Audio devices
* The PC speaker audio card is now available by default.
Network devices
* The guestfwd argument to slirp now supports running an
arbitrary command on every TCP connection (as in inetd).
This is invoked by specifying a target that starts with "cmd:".
Block devices
* Emulated IDE and SCSI as well as virtio-blk devices can now
switch the cache mode between writethrough and writeback.
virtio-blk automatically switches to writethrough if the
guest driver doesn't support flushes.
* The default cache mode for images is now writeback.
* Emulated SCSI devices can be given a custom vendor name,
product name and WWN.
* Improved support for passthrough of SCSI tapes and media changers.
* libiscsi can be used together with scsi-generic to pass
iSCSI tapes and media changers to the guest.
* When raw files are streamed, parts of the files that are
holes in the underlying filesystem are treated as
unallocated (as long as the OS supports either the FIEMAP
ioctl or the SEEK_HOLE/SEEK_DATA modes)
* CD-ROM drives can now be used with AHCI
qcow2
* qcow2 images support a new option, lazy_refcounts. If on,
the speed of cache=writethrough mode will be improved, at
the cost of requiring an fsck-like pass (and thus QEMU 1.2)
to use the image again after a power loss.
* qemu-img check can now repair qcow2 and QED images with the
new -r option.
VMDK
* Support for images in the streamOptimized subformat has been
fixed. This is a VMDK subformat commonly used with OVF appliances.
rbd
* rbd no longer ignores the cache setting
Live Migration, Save/Restore
* Migration works much better with guests with large memory.
* USB mass storage and passthrough devices support live migration.
VNC
* The threaded VNC server is now enabled by default.
Guest agent
* A new command "fstrim" was added to the guest agent.
New targets
* OpenRISC is now supported for both user-mode and system emulation.
Changelog:
# System emulation
## All targets
* qdev properties of type hex8 and hex32 used to accept hexadecimal values not prefixed with "0x"; the prefix is mandatory starting with this version. These properties are: iobase, membase, io_base for all devices that support the properties; vram_size for sysbus-g364 and SUNW,tcx; version for sb16 and iommu; ctl_iobase and data_iobase for fw_cfg; readback for debugcon; elcr_addr and elcr_mask for i8259.
* PCI addresses can still be addressed with a pair of hexadecimal device and function without a "0x" prefix.
* -kernel, -initrd and -append are now aliases for suboptions of -machine (for example -machine kernel=foo), and as such they are also available with -readconfig.
* PCI-to-PCI bridges are supported [...]
* PCI emulation includes a standard hot-plug controller [...]
* The coroutine backend can now be configured using configure --with-coroutine=.... A new coroutine backend sigaltstack is available for platforms that don't support the default ucontext backend.
* Last but not least: the SDL user interface now uses the new QEMU icon.
## ARM
* The syborg machine type has been removed since the Symbian Virtual Platform is no longer relevant with the disbanding of Symbian.
* A device tree can be passed to the kernel using -dtb option (or alternatively -machine dtb=...).
* New 'nuri' and 'smdkc210' models of Samsung Exynos4210 based devboards.
* New 'highbank' model of the Calxeda Highbank.
* New 'vexpress-a15' model of the Versatile Express Cortex-A15.
## PowerPC
* The Bamboo machine now works with TCG, before only KVM was able to execute 440 code.
* Pseries handles PCI, allowing for virtio devices with -M pseries.
* Pseries works with PR KVM allowing for -M pseries -enable-kvm to work on G5s.
* We can now emulate e500mc cores, but no e500mc based board is emulated yet. You need to use -M mpc8544ds and a special guest kernel.
* Timers on ppc405 now work and don't segfault QEMU.
## S/390
* Added support to -kernel to allow booting of ELF binaries.
* Fixed -kernel to allow booting of newer guest kernels.
* Devices can now be hotplug add'ed (remove is not there yet).
* Rebooting a virtual machine now works.
## SPARC
* Added interrupt controller and support of vector interrupts.
* Fixed handling 32 bit instructions on a sparc64 CPU.
* Fixed block load instructions regression happened in 1.0 release.
* Fixed BCD mask in m48t59 emulation, so that Solaris 2.5.1 doesn't hang on sun4m emulation when day of month >21.
* Fixed initrd loading in qemu-system-sparc64.
## x86
* NMIs are correctly injected through the LAPIC (rather than sent directly to the guest CPU) and respect the LINT1 mask, thus fixing kdump.
* The -rtc-td-hack option is now available as a qdev property (-global mc146818rtc.lost_tick_policy=slew) and as such can be specified in a -readconfig configuration file.
* When the system is suspended to RAM, QEMU will now stop executing the guest until a wakeup event occurs. Implemented wakeup events include key presses, mouse button presses, RTC alarm, ACPI timer expiration, serial console input (off by default; enable with -global isa-serial.wakeup=1), and the system_wakeup monitor command.
* KVM can optionally use kernel-based emulation of the local APIC, IOAPIC, i8259 PIC and i8254 PIT. This is supported with the -machine ...,kernel_irqchip=on command-line option. MSI is not supported yet when using the kernel_irqchip option.
* Emulation of a PC System Flash device. The feature is enabled by adding a pflash drive. This feature is not supported when KVM is enabled. See Features/PC System Flash for more information.
* KVM guests support Hyper-V enlightenments. These are enabled by the -cpu features hv_spinlocks, hv_relaxed and hv_vapic.
## Device emulation
* The virtio-scsi device is now supported by QEMU. The guest driver will be supported in Linux starting at version 3.4.
* QEMU now includes experimental support for USB 3.0 (xHCI).
* Various improvement on the floppy emulation, most notably media change has been fixed
## Audio devices
* Audio devices can now use volume control capabilities exposed by the PulseAudio and Spice backends. (Note: all audio devices do not expose their volume control unless --enable-mixemu is turned on).
## Block devices
* QEMU's NBD client implementation and the qemu-nbd server both fully support asynchronous I/O.
* The rbd block driver supports the discard operation now
* The vpc block driver supports the Fixed Disk subformat of VHD images now
* The new QMP command transaction can be used to perform a set of multiple snapshots atomically, rolling back to the original images if there is a problem along the way. See Features/SnapshotsMultipleDevices for more information.
* The new monitor command block_stream lets guest copy data from the backing file to the current image while the guest is running. This lets users enables quick provisioning of new virtual machines using shared remote storage, and lets the guest transition incrementally to fast local storage. An alternative to streaming is the copy-on-read option of the -drive command-line option, which only transfers data when the guest needs it.
* An experimental extension of the qcow2 file format has been introduced. With the implementation as of QEMU 1.1, the most important addition is zero clusters, which allows image streaming and copy-on-read to leave images sparse if the backing file they are copying from is sparse. In order to enable the extension, use qemu-img create -f qcow2 -o compat=1.1 <filename> <size> for creating the image. Note that older versions of QEMU won't be able to read such images.
* I/O throttling is experimentally supported using the new -drive options bps/bps_rd/bps_wr/iops/iops_rd/iops_wr. It is expected to work with virtio-blk and IDE harddisks, but may lead to hangs when used with CD-ROM or floppy emulation or other devices.
* qemu-io supports new options to enable tracing and to choose a cache modes
## Network devices
* QEMU supports a new type of network device, bridge (used with -net bridge or -netdev bridge). The new type is similar to tap, but uses a helper program instead of a script to attach the device to a bridge. The helper program can then be installed as setuid. The helper program supports a simple ACL and configuration mechanism, see the commit message and feature page for documentation.
## Live Migration, Save/Restore
* Live migration (or save/restore) from QEMU releases prior to 0.13 to QEMU 1.1 is not supported.
* Live migration supports IPv6. IPv6 addresses can be expressed as tcp:host:port. Brackets around a numeric host address are required if a port is also specified, otherwise they can be omitted.
# Guest agent
* qemu-ga has been ported to Windows.
* Interfaces added for suspending guests to disk/ram, and retrieving information about network interfaces
* Interfaces for filesystem freeze have been hardened, and no longer depend on guest agent runtime state to determine whether a system is currently frozen.
* An easier to use reset mechanism has been added: guest-sync-delimited.
# Host support
* ARM hosts are now supported again (they were broken in 1.0).
* Sockets and SLIRP on Windows hosts was broken in 0.14 and works again.
* 64-bit Windows hosts are now supported.
# User-mode emulation
* User-mode emulation can provide some information from the /proc filesystem.
* On 64-bit hosts user-mode emulation now defaults to reserving 0xf7000000 bytes of address space for the guest. This significantly reduces the likelihood of QEMU having to fail a guest mmap() request when there is still memory available. This reservation can be overridden with the -R command line option.
# Testing
* A make check target has been implemented and runs some quick sanity tests
* qemu-iotests, which was previously hosted in an external git repository, has been merged into the QEMU source tree
# Build dependencies
* Building QEMU requires glib 2.12 on POSIX systems, and glib 2.20 on Win32 systems.
* based on wip/qemu
Changelog:
1.1.0
System emulation
All targets
qdev properties of type hex8 and hex32 used to accept hexadecimal values not prefixed with "0x"; the prefix is mandatory starting with this version. These properties are: iobase, membase, io_base for all devices that support the properties; vram_size for sysbus-g364 and SUNW,tcx; version for sb16 and iommu; ctl_iobase and data_iobase for fw_cfg; readback for debugcon; elcr_addr and elcr_mask for i8259.
PCI addresses can still be addressed with a pair of hexadecimal device and function without a "0x" prefix.
-kernel, -initrd and -append are now aliases for suboptions of -machine (for example -machine kernel=foo), and as such they are also available with -readconfig.
PCI-to-PCI bridges are supported [...]
PCI emulation includes a standard hot-plug controller [...]
The coroutine backend can now be configured using configure --with-coroutine=.... A new coroutine backend sigaltstack is available for platforms that don't support the default ucontext backend.
Last but not least: the SDL user interface now uses the new QEMU icon.
ARM
The syborg machine type has been removed since the Symbian Virtual Platform is no longer relevant with the disbanding of Symbian.
A device tree can be passed to the kernel using -dtb option (or alternatively -machine dtb=...).
New 'nuri' and 'smdkc210' models of Samsung Exynos4210 based devboards.
New 'highbank' model of the Calxeda Highbank.
New 'vexpress-a15' model of the Versatile Express Cortex-A15.
PowerPC
The Bamboo machine now works with TCG, before only KVM was able to execute 440 code.
Pseries handles PCI, allowing for virtio devices with -M pseries.
Pseries works with PR KVM allowing for -M pseries -enable-kvm to work on G5s.
We can now emulate e500mc cores, but no e500mc based board is emulated yet. You need to use -M mpc8544ds and a special guest kernel.
Timers on ppc405 now work and don't segfault QEMU.
S/390
Added support to -kernel to allow booting of ELF binaries.
Fixed -kernel to allow booting of newer guest kernels.
Devices can now be hotplug add'ed (remove is not there yet).
Rebooting a virtual machine now works.
SPARC
Added interrupt controller and support of vector interrupts.
Fixed handling 32 bit instructions on a sparc64 CPU.
Fixed block load instructions regression happened in 1.0 release.
Fixed BCD mask in m48t59 emulation, so that Solaris 2.5.1 doesn't hang on sun4m emulation when day of month >21.
Fixed initrd loading in qemu-system-sparc64.
x86
NMIs are correctly injected through the LAPIC (rather than sent directly to the guest CPU) and respect the LINT1 mask, thus fixing kdump.
The -rtc-td-hack option is now available as a qdev property (-global mc146818rtc.lost_tick_policy=slew) and as such can be specified in a -readconfig configuration file.
When the system is suspended to RAM, QEMU will now stop executing the guest until a wakeup event occurs. Implemented wakeup events include key presses, mouse button presses, RTC alarm, ACPI timer expiration, serial console input (off by default; enable with -global isa-serial.wakeup=1), and the system_wakeup monitor command.
KVM can optionally use kernel-based emulation of the local APIC, IOAPIC, i8259 PIC and i8254 PIT. This is supported with the -machine ...,kernel_irqchip=on command-line option. MSI is not supported yet when using the kernel_irqchip option.
Emulation of a PC System Flash device. The feature is enabled by adding a pflash drive. This feature is not supported when KVM is enabled. See Features/PC System Flash for more information.
KVM guests support Hyper-V enlightenments. These are enabled by the -cpu features hv_spinlocks, hv_relaxed and hv_vapic.
Device emulation
The virtio-scsi device is now supported by QEMU. The guest driver will be supported in Linux starting at version 3.4.
QEMU now includes experimental support for USB 3.0 (xHCI).
Various improvement on the floppy emulation, most notably media change has been fixed
Audio devices
Audio devices can now use volume control capabilities exposed by the PulseAudio and Spice backends. (Note: all audio devices do not expose their volume control unless --enable-mixemu is turned on).
Block devices
QEMU's NBD client implementation and the qemu-nbd server both fully support asynchronous I/O.
The rbd block driver supports the discard operation now
The vpc block driver supports the Fixed Disk subformat of VHD images now
The new QMP command transaction can be used to perform a set of multiple snapshots atomically, rolling back to the original images if there is a problem along the way. See Features/SnapshotsMultipleDevices for more information.
The new monitor command block_stream lets guest copy data from the backing file to the current image while the guest is running. This lets users enables quick provisioning of new virtual machines using shared remote storage, and lets the guest transition incrementally to fast local storage. An alternative to streaming is the copy-on-read option of the -drive command-line option, which only transfers data when the guest needs it.
An experimental extension of the qcow2 file format has been introduced. With the implementation as of QEMU 1.1, the most important addition is zero clusters, which allows image streaming and copy-on-read to leave images sparse if the backing file they are copying from is sparse. In order to enable the extension, use qemu-img create -f qcow2 -o compat=1.1 <filename> <size> for creating the image. Note that older versions of QEMU won't be able to read such images.
I/O throttling is experimentally supported using the new -drive options bps/bps_rd/bps_wr/iops/iops_rd/iops_wr. It is expected to work with virtio-blk and IDE harddisks, but may lead to hangs when used with CD-ROM or floppy emulation or other devices.
qemu-io supports new options to enable tracing and to choose a cache modes
Network devices
QEMU supports a new type of network device, bridge (used with -net bridge or -netdev bridge). The new type is similar to tap, but uses a helper program instead of a script to attach the device to a bridge. The helper program can then be installed as setuid. The helper program supports a simple ACL and configuration mechanism, see the commit message and feature page for documentation.
Live Migration, Save/Restore
Live migration (or save/restore) from QEMU releases prior to 0.13 to QEMU 1.1 is not supported.
Live migration supports IPv6. IPv6 addresses can be expressed as tcp:host:port. Brackets around a numeric host address are required if a port is also specified, otherwise they can be omitted.
Guest agent
qemu-ga has been ported to Windows.
Interfaces added for suspending guests to disk/ram, and retrieving information about network interfaces
Interfaces for filesystem freeze have been hardened, and no longer depend on guest agent runtime state to determine whether a system is currently frozen.
An easier to use reset mechanism has been added: guest-sync-delimited.
Host support
ARM hosts are now supported again (they were broken in 1.0).
Sockets and SLIRP on Windows hosts was broken in 0.14 and works again.
64-bit Windows hosts are now supported.
User-mode emulation
User-mode emulation can provide some information from the /proc filesystem.
On 64-bit hosts user-mode emulation now defaults to reserving 0xf7000000 bytes of address space for the guest. This significantly reduces the likelihood of QEMU having to fail a guest mmap() request when there is still memory available. This reservation can be overridden with the -R command line option.
Testing
A make check target has been implemented and runs some quick sanity tests
qemu-iotests, which was previously hosted in an external git repository, has been merged into the QEMU source tree
Build dependencies
Building QEMU requires glib 2.12 on POSIX systems, and glib 2.20 on Win32 systems.
Changelog:
1.0.1
* Version 1.0.1
* Merge branch 's390-1.0' of git://repo.or.cz/qemu/agraf
* Merge branch 'ppc-1.0' of git://repo.or.cz/qemu/agraf
* e1000: bounds packet size against buffer size
* s390: fix cpu hotplug / cpu activity on interrupts
* s390x: add TR function for EXECUTE
* pseries: Don't try to munmap() a malloc()ed TCE table
* pseries: Populate "/chosen/linux,stdout-path" in the FDT
* pseries: Add a routine to find a stable "default" vty and use it
* pseries: Emit device tree nodes in reg order
* kvm-ppc: halt secondary cpus when guest reset
* pseries: Fix array overrun bug in PCI code
* console: Fix segfault on screendump without VGA adapter
* Merge branch 'master' of ssh://git.qemu.org/pub/git/qemu-stable-1.0
* rbd: always set out parameter in qemu_rbd_snap_list
* Documentation: Add qemu-img -t parameter in man page
* qemu-img rebase: Fix for undersized backing files
* coroutine: switch per-thread free pool to a global pool
* qiov: prevent double free or use-after-free
* PPC: Fix linker scripts on ppc hosts
* target-sh4: ignore ocbp and ocbwb instructions
* usb-ohci: td.cbp incorrectly updated near page end
* usb-host: properly release port on unplug & exit
* usb-storage: cancel I/O on reset
* Fix parse of usb device description with multiple configurations
* pc: fix event_idx compatibility for virtio devices
* pc: add pc-0.15
* cris: Handle conditional stores on CRISv10
* configure: Enable build by default PIE / read-only relocation sections on OpenBSD amd64/i386.
* target-i386: fix cmpxchg instruction emulation
* hw/9pfs: Use the correct signed type for different variables
* hw/9pfs: replace iovec manipulation with QEMUIOVector
* hw/9pfs: Use the correct file descriptor in Fsdriver Callback
* hw/9pfs: Add qdev.reset callback for virtio-9p-pci device
* hw/9pfs: Reset server state during TVERSION
* hw/9pfs: use migration blockers to prevent live migration when virtfs export path is mounted
* hw/9pfs: Improve portability to older systems
* exec.c: Fix subpage memory access to RAM MemoryRegion
* malta: Fix regression (i8259 interrupts did not work)
General
i386-softmmu is no longer named qemu but instead referred to as qemu-system-i386 for better consistency with other targets. A new tool is likely to be introduced that uses the qemu name so distributions are advised to not undo this change.
QEMU now uses a separate thread for VCPU execution. This merges the biggest difference between the qemu-kvm tree and upstream QEMU.
A new memory dispatch API has been added internally. A new monitor command "info mtree" can show the hierarchy of memory regions in the guest.
QEMU now has a build dependency on glib and makes extensive use of glib.
QEMU now can run on more hosts. Hosts without a native code generator can use the TCG interpreter (TCI). See Features/TCI for more information.
Block devices (disks)
QEMU now supports I/O latency accounting in the monitor command "info blockstats".
Errors are now tracked per device and are shown by the monitor command "info block".
All image formats now support asynchronous operation. IDE and SCSI emulation will use this feature, while other devices (notably floppy and SD) will not.
IDE/ATAPI
A large number of bugs were fixed regarding CD media change and tray locking.
SCSI
Memory management errors could crash QEMU when scsi-disk encountered I/O errors. Many instances of this problem were fixed.
The accuracy of error handling for SCSI emulation has been greatly improved.
SCSI devices can now be addressed by channel, target (id) and LUN. Not all emulated HBAs will support this feature (in particular, the LSI controller will not).
Block device pass through is now supported through a new scsi-block device. The scsi-block device works with block devices (like /dev/sda or /dev/sr0) rather than /dev/sgN devices, and is more efficient because it does not consume arbitrary amounts of memory when the guest does large data transfers.
SCSI CD-ROMs now report media changed events.
SCSI CD-ROMs now support DVD images.
Bugfixes for IDE media change also apply to SCSI.
SCSI devices now report a unit attention condition when the system is started or reset. This may cause problems with old firmware versions.
VDI
Now supports discarded blocks in dynamically-sized images.
User-mode networking (SLIRP)
SLIRP can process ARP replies and gratuitous ARP requests from the guest.
ARM
QEMU now supports the new Cortex-A15 instructions in linux-user mode (via "-cpu any"): VFPv4 fused multiply-accumulate (VFMA, VFMS, VFNMA, VFNMS) and also integer division (UDIV, SDIV).
The vexpress-a9, versatileab, versatilepb and realview-* boards now have audio support.
QEMU is known not to work on ARM hosts in this release. (ARM target emulation is fine.)
pSeries
sPAPR VIO devices can now be created with -device.
Xtensa
QEMU now supports DC232b and FSF xtensa CPU cores.
QEMU now supports sim (similar to Tensilica ISS) and LX60/LX110/LX200 machines.
Migration
QEMU now supports live migration using image files like QCOW2 on shared storage
disable the Nagle algorithm in the host-side connection. Either
the VM is already doing Nagle, in which case there is no point
in doing it twice, or it has chosen to disable it, in which case
we should respect that choice. This change speeds up GDB remote
debugging over TCP over user mode networking by multiple orders
of magnitude.
Changelog:
qed: fix use-after-free during l2 cache commit
sdl: Fix termination in -no-shutdown mode
Fix termination by signal with -no-shutdown
Add support for finding libpng via pkg-config.
Check for presence of compiler -pthread flag.
Allow overriding the location of Samba's smbd.
Fix linker scripts
Fix install(1) usage to be compatible with OpenBSD's install(1).
Fix qjson test of solidus encoding
configure: Copy test data to build directory
monitor: fix build breakage for !CONFIG_VNC
monitor: fix build breakage with --disable-vnc
Fix forcing multicast msgs to loopback on OpenBSD.
user: Restore debug usage message for '-d ?' in user mode emulation
* patch-aa is for tap detection bug.
* patch-bb is for build on NetBSD 4.
The patch-aa requires bump of PKGREVISION.
Pointed out by Sergey Svishchev in private e-mail.
* Many bug fixes and improvements
* Add LatticeMico32 and unicore32 targets are added.
* And many changes. See http://wiki.qemu.org/ChangeLog/0.15
Tested on NetBSD/i386 current, NetBSD/i386 5.1, DragonFly/i386 2.10.1,
and Gentoo Linux/i386.
* New features are not tested yet, for example SPICE protocol support.
* I have tested on NetBSD/i386 5.99.54 and DragonFly/i386 2.10.1 as host,
NetBSD/{amd64, i386, sparc} as guest.
Changelog:
0.14.1
virtio-blk: fail unaligned requests
qed: Fix consistency check on 32-bit hosts
exit if -drive specified is invalid instead of ignoring the "wrong" -drive
vhost: fix dirty page handling
Do not delete BlockDriverState when deleting the drive
vnc: tight: Fix crash after 2GB of output
lan9118: Ignore write to MAC_VLAN1 register
Don't allow multiwrites against a block device without lsi53c895a: add support for ABORT messages
virtio-pci: fix bus master work around on load
fix applesmc REV key
rbd: don't link with -lcrypto
net: Add the missing option declaration of "vhostforce"
lsi53c895a: Update dnad when skipping MSGOUT bytes
Revert "prep: Disable second IDE channel, as long as ISA IDE emulation doesn't support same irq for both channels"
isa-bus: Remove bogus IRQ sharing check
virtio-net: Fix lduw_p() pointer argument of wrong size
hw/sd.c: Add missing state change for SD_STATUS, SEND_NUM_WR_BLOCKS
vnc: Fix fatal crash with vnc reverse mode
qemu-char: Check for missing backend name
0.14.0
Targets
ARM
Most of the changes are related to bug fixes and improvements to match what the real hardware does. For now there is no new board or CPU.
MIPS
Host CPU consumption for idle guests
Timer fixes
FPU improvements
SH4
Various bug fixes and improvements including
SM501 2D engine copyrect support, needed to boot recent kernels
MMU mmaped TLB access, needed to boot recent kernels
Floating point exceptions and correct NaN support.
PPC
Fix running recent PPC64 kernels
New maintainer: Alexander Graf
Improve interrupt injection with KVM
Enable PV enabled guests for speedup with KVM
Floating point fixes
Add a ppc-440x5 Xilinx model
Add a virtex5 ml507 refdesign board for ppc-440x5
BookE MMU emulation improvements
s390x
No news, business as usual.
SPARC
Fix div(cc) and sdiv(cc) instruction emulation, fixes Xorg crash in the guest
Hosts
ARM
Fix random crashes
Fix 64-bit big-endian targets support
MIPS
Fix random crashes
IA64
Fix random crashes for 32-bit targets
Devices
IDE / AHCI
Added emulation layer for an ICH-9 AHCI controller (not yet stable). Tested with Linux, OpenBSD, Windows Vista and Windows 7. The AHCI emulation supports NCQ, so multiple read or write requests can be outstanding at the same time.
to use it, use the following command line snippet: -drive id=disk,file=<your image goes here>,if=none -device ahci,id=ahci -device ide-drive,drive=disk,bus=ahci.0
SCSI
Various bug fixes, no new features.
USB
Added USB support for remote wakeup, allowing the guest to suspend the USB bus when idle, which in turn reduces the CPU overhead of an idle machine.
The USB subsystem also got a bunch of patches to prepare it for USB 2.0 support.
virtio
virtio-pci can use ioeventfd for virtqueue notify. On systems that support KVM, the ioeventfd mechanism can be used to make virtqueue notify a lightweight exit by deferring hardware emulation to the iothread and allowing the VM to continue execution. This model is similar to how vhost receives virtqueue notifies. The result of this change is improved performance for userspace virtio devices. Virtio-blk throughput increases especially for multithreaded scenarios and virtio-net transmit throughput increases substantially. Read the commit message for more details.
Various fixes and stabilization for live-migration:
Various virtio-net improvements:
Make tx_timer timeout configurable
Limit number of packets sent per TX flush
Introduce a new bottom half packet TX
Fix cross-endianness support
PCI/PCI Express
Improved PCI Express support and functionalities with the implementation of:
flr (Function Level Reset)
aer (Advanced Error Reporting) and other improvements
A new monitor command to inject errors into the PCI bus: pcie_aer_inject_error
Implementation of Message Signaled Interrupts (MSI/MSI-X) support
Separation of the PCI bridge code from the main PCI code.
Sound
New Intel HD Audio support, adding three new devices:
intel-hda: Intel HD Audio Controller, the PCI device.
hda-duplex: HDA Codec. Attaches to the HDA bus. Supports 16bit stereo, rates 16k -> 96k, playback, recording and volume control (with CONFIG_MIXEMU=y).
hda-output: HDA Codec without recording support. Subset of the hda-duplex codec. Use this if you don't want your guests access your mic.
Usage: add '-device intel-hda -device hda-duplex' to your command line.
Tested guests:
Linux works.
Win7 works.
DOS (mpxplay) works.
WinXP doesn't work.
Real Time Clock
Fix binary/BCD mode switch
Video
Fix cirrus VGA crash with some guests
Fix curses big endian support
Block Drivers
qcow2
Added a writeback metadata cache. This improves performance of scenarios with lots of cluster allocations noticably (e.g. installation or after taking a snapshot), in some benchmarks by a factor of ten or more. Use cache=none or cache=writeback to take advantage from this change.
Copy snapshots out of QCOW2 disk, eg: qemu-img convert -f qcow2 -O qcow2 -s snapshot_name src_img bck_img
Zero-copy read and write operations
Other fixes and code cleanups:
qcow2: Invalidate cache after failed read
block: Allow bdrv_flush to return errors
qcow2: Simplify image creation
qcow2: Fixes unaligned access on IA64
qed
Introduction of the QEMU Enhanced Disk (qed) image format. It is a disk image format that forgoes features found in qcow2 in favor of better levels of performance and data integrity. Due to its simpler on-disk layout, it is possible to safely perform metadata updates more efficiently.
More information about qed: http://wiki.qemu.org/Features/QED
Initial thread discussion: http://lists.nongnu.org/archive/html/qemu-devel/2010-09/msg00310.html
ceph/rbd
Introduction of the new ceph/rbd block driver. RBD is an block driver for the distributed file system Ceph.
More information about ceph: http://ceph.newdream.net/
nbd
Improve qemu-nbd performance by 4400 %. This patch combines the reply header and payload send operation.
Introduce NBD named exports.
Spice
New support for the SPICE protocol. The project main focus is to provide high-quality remote access to QEMU virtual machines. More information about SPICE can be found at the project's web site: http://spice-space.org/
New qxl device. qxl is a paravirtual graphics card. The qxl device is the bridge between the guest and the spice server (aka libspice-server). The spice server will send the rendering commands to the spice client, which will actually render them. The spice server is also able to render locally, which is done in case the guest wants read something from video memory. Local rendering is also used to support display over vnc and sdl. qxl is activated using -vga qxl. qxl supports multihead, additional cards can be added via '-device qxl.
Relevant commits:
spice: core bits
spice: add keyboard
spice: add mouse
spice: simple display
spice: add tablet support
spice: tls support
spice: make compression configurable.
spice: add config options for channel security.
spice: add config options for the listening address
spice: add misc config options
spice: add audio
spice: add qxl device
spice: connection events.
QMP / monitor
TODO: QMP is now stable, except for error reporting?
The work to facilitate the management of QEMU instances has been improved. QMP has received various fixes. Now it is possible to call a traditional monitor command through QMP, in case your application depends on the output or the command is not yet ported to QMP.
New commands:
query-spice / info spice
human-monitor-command
set_password
drive_del
block_resize command, allowing resizing of block devices while qemu is running. For virtio-blk the size is updated automatically when this command is issued on the host. IDE is not supported. For SCSI devices the new size can be updated in Linux guests by doing the following shell command:
echo > /sys/class/scsi_device/0:0:0:0/device/rescan
Tracing
Introduction of platform-independent tracing, more information about it: http://wiki.qemu.org/Features/Tracing
Documentation and tutorial: http://git.qemu.org/qemu.git/plain/docs/tracing.txt
Some relevant commits:
Add trace-events file for declaring trace events
Add a DTrace tracing backend targetted for SystemTAP compatibility
Add LTTng Userspace Tracer backend
Add simple built-in tracing backend
Add stderr trace-event backend:
Support for dynamically enabling/disabling trace events
Specify trace file name
Add trace-file command to open/close/flush trace file
Other stuff
Extend -option-rom command to have additional parameter bootindex
Little endian / big endian MMIO framework. Until now, most devices had special hacks to allow them to work on big and little endian systems (ppc / x86). With that framework, they should mostly work with both and not require and device specific hacks anymore.
"Looks good" from wiz@ and obache@.
ChangeLog for 0.13.0 is not updated but there is a list in announcement:
This release consists of over 2,500 commits from 145 contributors.
Some major features were added in this release including:
- vhost-net: kernel-accelerating network backend for virtio devices (using KVM)
- qmp: significant improvements covering most monitor commands
- vnc: introduction of new encodings that dramatically improve bandwidth
(part of GSoC project)
- ivshmem: new shared memory device allowing multiple guests to share
a memory region
- mips: introduction of fulong mini-pc
- virtio-9p: introduction of a paravirtual file system passthrough mechanism
- hpet: many enhancements
- target-s390: support for s390 usermode emulation
- many more features and bug fixes
A special note about QMP support in 0.13.0. QMP is still considered
experimental in 0.13.0. There are no plans to change the protocol
in an incompatible way but there are likely to be missing features.
ChangeLog for version 0.12.5:
- audio/alsa: Handle SND_PCM_STATE_SETUP in alsa_poll_handler
- block: Handle multiwrite errors only when all requests have completed
- block: Fix early failure in multiwrite
- vpc: Use bdrv_(p)write_sync for metadata writes
- vmdk: Use bdrv_(p)write_sync for metadata writes
- qcow2: Use bdrv_(p)write_sync for metadata writes
- qcow: Use bdrv_(p)write_sync for metadata writes
- block: Add bdrv_(p)write_sync
- qcow2: Restore L1 entry on l2_allocate failure
- block/vdi: Fix image opening and creation for odd disk sizes
- block/vpc: Fix conversion from size to disk geometry
- qcow2: Remove abort on free_clusters failure
- vmdk: Fix COW
- qcow2: Fix creation of large images
- vmdk: fix double free
- qemu-options: add documentation for stdio signal=on|off
- target-arm : fix parallel saturated subtraction implementation
- target-arm : fix thumb2 parallel add/sub opcode decoding
- target-arm: fix addsub/subadd implementation
- target-i386: fix xchg rax,r8
- block/vvfat.c: fix warnings with _FORTIFY_SOURCE
- audio/alsa: Spelling typo (paramters)
- target-mips: fix DINSU instruction
- Correct definitions for FD_CMD_SAVE and FD_CMD_RESTORE
- qcow2: Fix corruption after error in update_refcount
- qcow2: Fix corruption after refblock allocation
- block: Fix multiwrite with overlapping requests
- qcow2: Fix error handling in l2_allocate
- qcow2: Clear L2 table cache after write error
- ide: Fix ide_dma_cancel
- usb-bus: fix no params
- Avoid crash on '-usbdevice <device>' without parameters
- Fix -usbdevice crash
- Fix multiboot compilation
- Fix missing symbols in .rel/.rela.plt sections
- target-ppc: fix RFI by clearing some bits of MSR
- Fix typo in balloon help
- arm_timer: fix oneshot mode
- arm_timer: reload timer when enabled
- qemu-sockets: avoid strlen of NULL pointer
- block: fix aio_flush segfaults for read-only protocols (e.g. curl)
- virtio-blk: fix barrier support
- block: fix sector comparism in multiwrite_req_compare
- pci: irq_state vmstate breakage
- qemu-img: use the heap instead of the huge stack array for win32
Pkgsrc changes:
patch-aa
patch-ao
patch-ba
patch-de
patch-ed
- lifted from previous (some adjustments per upstream changes)
patch-ab
- removed (looks similar fix applied in upstream)
patch-dd
- adjust configure for location of man page dir (as previous)
- fix detection for arm hosts
patch-dk
- removed (looks no longer applicable due to reorganized upstream)
patch-ee
- remove old e1000.c fix (pulled up to upstream)
- pull block/sheepdog.c build fix on *BSD hosts from upstream
patch-ef
patch-eg
patch-eh
patch-ei
- workaround for conflicts with SSP read() macro in NetBSD's <ssp/unistd.h>
(PR lib/43832: ssp causes common names to be defines)
patch-ej
- pull build/warning fixes in ui/vnc-enc-tight.c from upstream
patch-ek
- pull ATA PIO fix (by jakllsch@) from upstream
- pull warning fix from upstream
patch-el
- workaround for missing C99 FP macro on netbsd-4
(PR pkg/42899, but od(1) fixes for netbsd-4 not included)
patch-em
patch-en
- build fix on NetBSD/arm host using gcc-4.1.3
(built qemu binary on NetBSD/hpcarm host fails though)
patch-eo
patch-ep
patch-er
patch-es
- pull ESP SCSI DMA fixes (that might affect sparc) from upstream
patch-eq
- pull ESP SCSI DMA fixes from upstream
- disable broken ARC JAZZ floppy that causes hang on MIPS NT 4.0 guest
Makefile
- bump DISTNAME
- add makeinfo to USE_TOOLS
XXX: gets "qemu-doc.texi:7: warning: unrecognized encoding name `UTF-8'."
- adjust SUBST_FILES.qaudio per upstream changes
- enable nbd support *BSD per upstream update
PLIST
distinfo
- update per each file
---
version 0.12.4:
- Workaround for broken OSS_GETVERSION on FreeBSD, part two (Juergen Lock)
- oss: fix fragment setting (malc)
- oss: issue OSS_GETVERSION ioctl only when needed (malc)
- oss: refactor code around policy setting (malc)
- oss: workaround for cases when OSS_GETVERSION is not defined (malc)
- block: Free iovec arrays allocated by multiwrite_merge() (Stefan Hajnoczi)
- lsi: fix segfault in lsi_command_complete (Gerd Hoffmann)
- lsi: pass lsi_request to lsi_reselect (Gerd Hoffmann)
- lsi: move dma_len+dma_buf into lsi_request (Gerd Hoffmann)
- lsi: move current_dev into lsi_request (Gerd Hoffmann)
- lsi: have lsi_request for the whole life time of the request. (Gerd Hoffmann)
- lsi: use QTAILQ for lsi_queue (Gerd Hoffmann)
- tcp/mips: Change TCG_AREG0 (fp -> s0) (Stefan Weil)
- sh_pci: fix memory and I/O access (Aurelien Jarno)
- Fix incoming migration with iothread (Marcelo Tosatti)
- Fix SIGFPE for vnc display of width/height = 1 (Chris Webb)
- net: remove broken net_set_boot_mask() boot device validation (Eduardo Habkost)
- qcow2: Remove request from in-flight list after error (Kevin Wolf)
- qcow2: Don't ignore immediate read/write failures (Kevin Wolf)
- block: Fix multiwrite memory leak in error case (Kevin Wolf)
- block: Fix error code in multiwrite for immediate failures (Kevin Wolf)
- block: Fix multiwrite error handling (Kevin Wolf)
- scsi-disk: fix buffer overflow (Gerd Hoffmann)
- qcow2: Rewrite alloc_refcount_block/grow_refcount_table (Kevin Wolf)
- qcow2: Factor next_refcount_table_size out (Kevin Wolf)
- block: avoid creating too large iovecs in multiwrite_merge (Christoph Hellwig)
- json-parser: Fix segfault on malformed input (Kevin Wolf)
- linux-user: switch default ppc64 CPU to 970fx from 970 (Aurelien Jarno)
- target-sh4: MMU: fix store queue addresses (Aurelien Jarno)
- target-sh4: MMU: fix ITLB priviledge check (Aurelien Jarno)
- target-sh4: MMU: fix mem_idx computation (Aurelien Jarno)
- sh7750: handle MMUCR TI bit (Aurelien Jarno)
- UHCI spurious interrut fix (Paul Brook)
- tcg/mips: fix branch offset during retranslation (Aurelien Jarno)
- tcg/arm: correctly save/restore registers in prologue/epilogue (Aurelien Jarno)
- workaround for cmd646 bmdma register access while no dma is active (Igor V. Kovalenko)
- Fix corner case in chardev udp: parameter (Jan Kiszka)
- Don't set default monitor when there is a mux'ed one (Jan Kiszka)
- spelling typo (compatibilty) in hw/fw_cfg.c (Vagrant Cascadian)
- fdc: fix drive property handling. (Gerd Hoffmann)
- target-i386: fix commit c22549204a6edc431e8e4358e61bd56386ff6957 (TeLeMan)
- target-i386: fix SIB decoding with index = 4 (Aurelien Jarno)
- Fix segfault with ram_size > 4095M without kvm (Ryan Harper)
- target-i386: Fix long jumps/calls in long mode with REX.W set (malc)
- target-i386: fix lddqu SSE instruction (Aurelien Jarno)
- qemu-char.c: drop debug printfs from qemu_chr_parse_compat (Jan Kiszka)
- fix undefined shifts by >32 (Paolo Bonzini)
- Fix qemu -net user,hostfwd= example (Aurelien Jarno)
---
Also add a patch for e1000.c NIC to make wm(4) work on NetBSD guest:
---
* Reset EEPROM internal state on CS rise edge,
not SK rise edge during CS is low, per CS pin description in
the FM93C06 EEPROM manual:
"... a rising edge on this signal is required to reset the
internal state-machine to accept a new cycle ..."
Intel's em driver seems to explicitly raise and lower SK output
after CS is negated in em_standby_eeprom() so many other OSes
that use Intel's driver don't have this problem, but I can't find
articles that say the MICROWIRE or EEPROM spec requires such sequence.
* It isn't a good idea to use memset(,0,) to clear EEPROM state values,
so explicitly clear status members and preserve the previous EECD values
---
This patch is also filed as upstream QEMU bugs #581737.
While here, several tweaks in Makefile to appease pkglint.
