visoreXtensible Versatile hypervISOR

Xvisor v0.3.0 Date: Wed, 1 Jan 2020 12:08:37 +0530  |  Posted by: Anup Patel

In this release, we mainly have new features and lots of improvements in RISC-V and x86_64 ports.

New Features:

• Lazy xfer API for VMSG framework
• Arch specific arch_atomic_xchg() and arch_atomic64_xchg() APIs
• Arch specific arch_vcpu_irq_can_execute_multiple() API
• Arch specific arch_cpu_print() API
• CPU hotplug notifier framework
• System time accounting for each VCPU
• Print version string using git describe
• Vscreen soft bind for Guest with framebuffer matching to Host

New Commands:

• sleep sub-commands such as secs, msecs, usecs, test_secs, test_msecs, and test_usecs

New Drivers:

• Simple framebuffer (aka SimpleFB) driver
• Goldfish RTC driver

New Emulators:

• ns16550 serial port emulator
• SiFive PLIC emulator
• Goldfish RTC emulator
• VirtIO input device emulator

New Boards:

• No change

All Ports:

• Use vfs guest_fdt_load to populate Guest device tree
• Defconfig update script to build Guest Linux image
• Fragmented extra Linux config for each Guest type
• Removed Linux configs for each Guest type

ARM Ports:

• No change

ARM32 Port:

• No change

ARM32ve Port:

• No change

ARM64 Port:

• Added pointer authentication virtualization
• Updated Foundation v8 boot-wrapper for pointer authentication

RISC-V Port:

• Basic firmware RISC-V support for RV32 and RV64
• Basic firmware RISC-V virt machine support for RV32 and RV64
• Complete implementation of all arch_vcpu_xyz() functions
• Complete implementation of all arch_guest_xyz() functions
• Emulate SBI v0.1 for RISC-V Guest
• Lazy FP save/restore
• SBI v0.2 base extension for RV32 and RV64 host
• SBI v0.2 replacement extensions for RV32 and RV64 host
• Map Guest SBI v0.1 SFENCE calls to Host SBI v0.2 HFENCE calls
• Compliant with RISC-V Hypervisor v0.5 draft spec
• Able to create multiple SMP Guests on RV64 host
• Able to boot Xvisor on RV32 host

x86 Port:

• Mandate unrestricted guest for Intel
• LAPIC timer as system timer
• Intel extended page table support
• Intel VMCS run support
• Able to boot Xvisor on Intel host with VTx support