{"id":32296,"date":"2019-10-31T21:46:12","date_gmt":"2019-10-31T18:46:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/vypusk-emulyatora-qemu-4-0\/"},"modified":"2019-10-31T21:46:12","modified_gmt":"2019-10-31T18:46:12","slug":"vypusk-emulyatora-qemu-4-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/vypusk-emulyatora-qemu-4-0","title":{"rendered":"Release of QEMU 4.0 emulator","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"http:\/\/lists.nongnu.org\/archive\/html\/qemu-devel\/2019-04\/msg03851.html\">Created<\/a><\/noindex>  project release <noindex><a rel=\"nofollow\" href=\"http:\/\/wiki.qemu.org\/Download\">QEMU 4.0<\/a><\/noindex>. As an emulator, QEMU allows the execution of programs 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 native system due to direct instruction execution on the CPU and the involvement of the Xen hypervisor or KVM module. <\/p>\n<p>The project was initially created by Fabrice Bellard to enable the execution of compiled Linux executables for the x86 platform on architectures other than x86. Over the years of development, support for full emulation for 14 hardware architectures has been added, and the number of emulated hardware devices has exceeded 400. More than 3,100 changes from 220 developers have been made in preparation for version 4.0. <\/p>\n<p>Key <noindex><a rel=\"nofollow\" href=\"http:\/\/wiki.qemu.org\/ChangeLog\/4.0\">improvements<\/a><\/noindex>, added in QEMU 4.0: <\/p>\n<ul>\n<li class=\"l\"> Support for ARMv8+ instruction extensions has been added to the ARM architecture emulator: SB, PredInv, HPD, LOR, FHM, AA32HPD,<br \/>\n   PAuth, JSConv, CondM, FRINT, and BTI. Support has been added for the emulation of the 'Musca' and 'MPS2' boards. ARM PMU (Power Management Unit) emulation has been improved. In the platform <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.qemu.org\/Documentation\/Platforms\/ARM#Generic_ARM_system_emulation_with_the_virt_machine\">virt<\/a><\/noindex> the ability to use more than 255 GB of RAM has been added along with support for u-boot images of type 'noload';<\/p>\n<li class=\"l\"> In the x86 architecture emulator, in the virtualization acceleration engine <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/intel\/haxm\">HAX<\/a><\/noindex> (Intel Hardware Accelerated Execution) support for POSIX-compatible hosts such as Linux and NetBSD has been added (previously only the Darwin platform was supported). In the Q35 chipset emulator (ICH9), for the primary PCIe ports, the maximum speed (16GT\/s) and number of connection lanes (x32) defined in the PCIe 4.0 specification can optionally be declared (for compatibility, older types of machines will default to 2.5GT\/s and x1). It is now possible to load Xen PVH images with the '-kernel' option;\n<li class=\"l\"> In the MIPS architecture emulator, support for multithreaded emulation using the classic TCG (Tiny Code Generator) has been added. Support for emulating CPU I7200 (nanoMIPS32 ISA) and I6500 (MIPS64R6 ISA) has also been introduced, along with the ability to handle CPU-type requests using the QMP (QEMU Management Protocol), and support for SAARI and SAAR configuration registers. The performance of virtual machines of the Fulong 2E type has been improved. The Interthread Communication Unit implementation has been updated;\n<li class=\"l\"> In the PowerPC architecture emulator, support for emulating the XIVE interrupt controller has been added, enhanced support for POWER9, and the capability for hot-plugging PCI host bridges (PHB, PCI host bridge) has been introduced for P series. Protection against Spectre and Meltdown attacks is enabled by default;\n<li class=\"l\">  In the RISC-V architecture emulator, support for emulating PCI and USB has been added. The built-in debugging server (gdbserver) now supports specifying register lists in XML files. Support for mstatus fields TSR, TW, and TVM has been introduced;\n<li class=\"l\"> The s390 architecture emulator has added support for the CPU model z14 GA 2, as well as support for emulating instruction extensions for floating-point calculations and vector operations.\n<li class=\"l\"> The Tensilica Xtensa family processor emulator has improved SMP support for Linux and added support for the FLIX (Flexible Length Instructions Extension).\n<li class=\"l\"> A '-display spice-app' option has been added to the graphical interface to configure and launch a version of the remote access Spice client that resembles the GTK interface of QEMU;\n<li class=\"l\"> The VNC server implementation has added access control support using the tls-authz\/sasl-authz options.\n<li class=\"l\"> QMP (QEMU Management Protocol) now supports centralized\/out-of-band execution of commands and has implemented additional commands for working with block devices.\n<li class=\"l\"> VFIO has added an EDID interface implementation for supported mdev (Intel vGPU), allowing screen resolution changes using the xres and yres options.\n<li class=\"l\"> For Xen, a new device 'xen-disk' has been added, which can independently create a disk backend for Xen PV (without referring to xenstore). The performance of the Xen PV disk backend has been increased and the ability to resize disks has been added;\n<li class=\"l\"> In network block devices, diagnostics and tracing capabilities have been expanded, improving client compatibility with problematic NBD server implementations. Options '--bitmap', '--list', and '--tls-authz' have been added to qemu-nbd;\n<li class=\"l\"> The emulated IDE\/via device has added support for PCI IDE mode.\n<li class=\"l\"> Support has been added for using the lzfse algorithm to compress dmg images. For the qcow2 format, support for connecting external files with data has been added. The unpacking operations for qcow2 have been moved to a separate thread. In vmdk images, support for the 'blockdev-create' operation has been added;\n<li class=\"l\"> The virtio-blk block device has added support for DISCARD operations (informing about block release) and WRITE_ZEROES (zeroing a range of logical blocks).\n<li class=\"l\"> The pvrdma device has implemented support for RDMA Management Datagram services (MAD).\n<li class=\"l\"> Changes have been made <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.qemu.org\/ChangeLog\/4.0#Incompatible_changes\">changes<\/a><\/noindex>which disrupts backward compatibility. For instance, instead of the 'handle' option in '-fsdev' and '-virtfs', the 'local' or 'proxy' options should be used. The '-virtioconsole' option has been removed (replaced with '-device virtconsole'), as well as '-no-frame', '-clock', and '-enable-hax' (replaced with '-accel hax'). The 'ivshmem' device has been removed (use 'ivshmem-doorbell' or 'ivshmem-plain'). Support for building with SDL1.2 has been discontinued (SDL2 must be used).\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50567\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 QEMU 4.0. \u0412 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u044d\u043c\u0443\u043b\u044f\u0442\u043e\u0440\u0430 QEMU \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0443, \u0441\u043e\u0431\u0440\u0430\u043d\u043d\u0443\u044e \u0434\u043b\u044f \u043e\u0434\u043d\u043e\u0439 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b, \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0441 \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u043d\u043e \u0438\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043e\u0439, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0434\u043b\u044f ARM \u043d\u0430 x86-\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u043c \u041f\u041a. \u0412 \u0440\u0435\u0436\u0438\u043c\u0435 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432 QEMU \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u0432 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0438 \u0431\u043b\u0438\u0437\u043a\u0430 \u043a \u043d\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0437\u0430 \u0441\u0447\u0451\u0442 \u043f\u0440\u044f\u043c\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 \u043d\u0430 CPU \u0438 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-32296","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" 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