Set the NUMA distance from a source node to a destination node. numa node] -numa node] -numa dist,src= source ,dst= destination ,val= distance -numa cpu,node-id= node ĭefine a NUMA node and assign RAM and VCPUs to it. Maxcpus specifies the maximum number of hotpluggable CPUs. If any on the three values is given, the total number of CPUs n can be omitted. Per cores, the number of dies per packages and the total number of On Sparc32 target, Linux limits the number of usable CPUsįor the PC target, the number of cores per die, the number of threads On the PC target, up to 255ĬPUs are supported. No incompatible TCG features have been enabled (e.g. Is to enable multi-threading where both the back-end and front-ends support it and ![]() Thread per vCPU therefor taking advantage of additional host cores. When the TCG is multi-threaded there will be one Select CPU model ( "-cpu help" for list and additional feature selection)Ĭontrols number of TCG threads. Please use -global nd-configuration= on|off instead. If enforce-config-section is set to on, force migrationĬode to send configuration section even if the machine-type sets the The default is on.Įnables or disables NVDIMM support. This featureĬontrols whether DEA wrapping keys will be created to allowĮxecution of DEA cryptographic functions. The default is on.Įnables or disables DEA key wrapping support on s390-ccw hosts. This featureĬontrols whether AES wrapping keys will be created to allowĮxecution of AES cryptographic functions. The host, de-duplicates identical memory pages among VMs instancesĮnables or disables AES key wrapping support on s390-ccw hosts. The default is on.Įnables or disables memory merge support. For accel=xen the default is off otherwise the defaultĭefines the size of the KVM shadow MMU. More than one accelerator specified, the next one is used if the previous oneĬontrols in-kernel irqchip support for the chosen accelerator when available.Įnables IGD GFX passthrough support for the chosen machine when available.Įnables emulation of VMWare IO port, for vmmouse etc. Kvm, xen, hax, hvf, whpx or tcg can be available. Of QEMU will support machine types from many previous versions. To skip multiple intermediate releases when upgrading, new releases To allow live migration of guests from QEMU version 2.8.0, to QEMU For example, the 2.8.0 release introduced machine types Use "-machine help" to listįor architectures which aim to support live migration compatibilityĪcross releases, each release will introduce a new versioned machine ![]() OPTIONS disk_image is a raw hard disk image for IDE hard disk 0. Qemu-system-x86_64 dos.img -device gus,irq=5ĬS4231A is the chip used in Windows Sound System and GUSMAX products Qemu-system-x86_64 dos.img -soundhw gus -parallel none QEMU must be told to not have parallel ports to have working GUS. Note that, by default, GUS shares IRQ(7) with parallel ports and so QEMU uses YM3812 emulation by Tatsuyuki Satoh. QEMU uses the PC BIOS from the Seabios project and the Plex86/Bochs LGPL
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