Messages in this thread | | | Date | Mon, 04 Oct 2021 11:01:39 -0700 (PDT) | Subject | Re: [PATCH v20 00/17] KVM RISC-V Support | From | Palmer Dabbelt <> |
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On Mon, 04 Oct 2021 01:58:28 PDT (-0700), pbonzini@redhat.com 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.
Thanks. I'm assuming "you" there is Anup?
Just to make sure we're on the same page here, I've got
commit 6c341a285912ddb2894ef793a58ad4f8462f26f4 (HEAD -> for-next) Merge: 08da1608a1ca 3f2401f47d29 Author: Palmer Dabbelt <palmerdabbelt@google.com> Date: Mon Oct 4 10:12:44 2021 -0700
Merge tag 'for-riscv' of https://git.kernel.org/pub/scm/virt/kvm/kvm.git into for-next
H extension definitions, shared by the KVM and RISC-V trees.
* tag 'for-riscv' of ssh://gitolite.kernel.org/pub/scm/virt/kvm/kvm: (301 commits) RISC-V: Add hypervisor extension related CSR defines KVM: selftests: Ensure all migrations are performed when test is affined KVM: x86: Swap order of CPUID entry "index" vs. "significant flag" checks ptp: Fix ptp_kvm_getcrosststamp issue for x86 ptp_kvm x86/kvmclock: Move this_cpu_pvti into kvmclock.h KVM: s390: Function documentation fixes selftests: KVM: Don't clobber XMM register when read KVM: VMX: Fix a TSX_CTRL_CPUID_CLEAR field mask issue selftests: KVM: Explicitly use movq to read xmm registers selftests: KVM: Call ucall_init when setting up in rseq_test KVM: Remove tlbs_dirty KVM: X86: Synchronize the shadow pagetable before link it KVM: X86: Fix missed remote tlb flush in rmap_write_protect() KVM: x86: nSVM: don't copy virt_ext from vmcb12 KVM: x86: nSVM: test eax for 4K alignment for GP errata workaround KVM: x86: selftests: test simultaneous uses of V_IRQ from L1 and L0 KVM: x86: nSVM: restore int_vector in svm_clear_vintr kvm: x86: Add AMD PMU MSRs to msrs_to_save_all[] KVM: x86: nVMX: re-evaluate emulation_required on nested VM exit KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry ...
into ssh://git@gitolite.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git for-next (I know that's kind of a confusing name, but it's what I've been using as my short-term staging branch so I can do all my tests before saying "it's on for-next").
If that looks OK I can make it a touch more official by putting into the RISC-V tree.
> 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.
Me too ;).
I'm happy to add some KVM-related stuff to my pre-push test set, just LMK if there's anything specific I should be looking in to.
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