{"id":104976,"date":"2022-08-31T09:36:52","date_gmt":"2022-08-31T07:36:52","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-emulyatora-qemu-7-1"},"modified":"2022-08-31T09:36:52","modified_gmt":"2022-08-31T07:36:52","slug":"vypusk-emulyatora-qemu-7-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/vypusk-emulyatora-qemu-7-1","title":{"rendered":"Release of QEMU 7.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
The release of the QEMU 7.1 project has been announced. As an emulator, QEMU allows you to run software compiled for one hardware platform on a system with a completely different architecture, for example, running an ARM application on an x86-compatible PC. In virtualization mode, QEMU's code execution performance in an isolated environment is close to that of a physical system due to direct execution of instructions on the CPU and involvement of the Xen hypervisor or KVM module. <\/p>\n
The project was initially created by Fabrice Bellard to enable the execution of Linux binaries compiled for the x86 platform on architectures other than x86. Over the years, full emulation support has been added for 14 hardware architectures, and the number of emulated hardware devices has surpassed 400. More than 2,800 changes from 238 developers have been made in preparation for version 7.1. <\/p>\n
Key improvements added in QEMU 7.1: <\/p>\n
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On the Linux platform, the zero-copy-send option has been implemented, allowing memory page transfers during live migration without intermediate buffering.\n
The QMP (QEMU Machine Protocol) now includes the ability to use the block-export-add command for exporting NBD images with page information in a 'dirty' state. New commands 'query-stats' and 'query-stats-schema' have also been added to request statistics from various QEMU subsystems.\n
The agent for guest systems has improved support for the Solaris platform and added new commands 'guest-get-diskstats' and 'guest-get-cpustats' to display the status of disks and CPU. The 'guest-get-disks' command now outputs information from NVMe SMART, and the 'guest-get-fsinfo' command displays data about the NVMe bus type.\n
A new emulator for LoongArch has been added, supporting the 64-bit variant of the LoongArch instruction set architecture (LA64). The emulator supports Loongson 3 5000 processors and Loongson 7A1000 northbridges.\n
The ARM emulator has implemented new types of emulated machines: Aspeed AST1030 SoC, Qualcomm, and AST2600 \/ AST1030 (fby35). Support for emulating the Cortex-A76 CPU and Neoverse-N1, as well as processor extensions SME (Scalable Matrix Extensions), RAS (Reliability, Availability, Serviceability) and commands to block leaks from the internal cache during speculative execution of instructions on the CPU have been added. For 'virt' machines, GICv4 interrupt controller emulation has been realized.\n