On Mon, Oct 4, 2021 at 2:28 PM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > On 27/09/21 13:39, Anup Patel wrote: > > This series adds initial KVM RISC-V support. Currently, we are able to boot > > Linux on RV64/RV32 Guest with multiple VCPUs. > > > > Key aspects of KVM RISC-V added by this series are: > > 1. No RISC-V specific KVM IOCTL > > 2. Loadable KVM RISC-V module supported > > 3. Minimal possible KVM world-switch which touches only GPRs and few CSRs > > 4. Both RV64 and RV32 host supported > > 5. Full Guest/VM switch is done via vcpu_get/vcpu_put infrastructure > > 6. KVM ONE_REG interface for VCPU register access from user-space > > 7. PLIC emulation is done in user-space > > 8. Timer and IPI emuation is done in-kernel > > 9. Both Sv39x4 and Sv48x4 supported for RV64 host > > 10. MMU notifiers supported > > 11. Generic dirtylog supported > > 12. FP lazy save/restore supported > > 13. SBI v0.1 emulation for KVM Guest available > > 14. Forward unhandled SBI calls to KVM userspace > > 15. Hugepage support for Guest/VM > > 16. IOEVENTFD support for Vhost > > > > Here's a brief TODO list which we will work upon after this series: > > 1. KVM unit test support > > 2. KVM selftest support > > 3. SBI v0.3 emulation in-kernel > > 4. In-kernel PMU virtualization > > 5. In-kernel AIA irqchip support > > 6. Nested virtualizaiton > > 7. ..... and more ..... > > Looks good, I prepared a tag "for-riscv" at > https://git.kernel.org/pub/scm/virt/kvm/kvm.git. Palmer can pull it and > you can use it to send me a pull request. Sure, I have prepared PR for the remaining 16 patches based on the PATCH1 commit in the KVM tree. I will send PR today or tomorrow. > > I look forward to the test support. :) Would be nice to have selftest > support already in 5.16, since there are a few arch-independent > selftests that cover the hairy parts of the MMU. I will try my best to send basic kvm-selftest support sooner (preferably for 5.16). Regards, Anup
