On Fri, Oct 1, 2021 at 2:33 PM Ley Foon Tan <lftan.linux@xxxxxxxxx> wrote: > > On Mon, Sep 27, 2021 at 8:01 PM Anup Patel <anup@xxxxxxxxxxxxxx> wrote: > > > > Hi Palmer, Hi Paolo, > > > > On Mon, Sep 27, 2021 at 5:10 PM Anup Patel <anup.patel@xxxxxxx> 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 ..... > > > > > > This series can be found in riscv_kvm_v20 branch at: > > > https//github.com/avpatel/linux.git > > > > > > Our work-in-progress KVMTOOL RISC-V port can be found in riscv_v9 branch > > > at: https//github.com/avpatel/kvmtool.git > > > > > > The QEMU RISC-V hypervisor emulation is done by Alistair and is available > > > in master branch at: https://git.qemu.org/git/qemu.git > > > > > > To play around with KVM RISC-V, refer KVM RISC-V wiki at: > > > https://github.com/kvm-riscv/howto/wiki > > > https://github.com/kvm-riscv/howto/wiki/KVM-RISCV64-on-QEMU > > > https://github.com/kvm-riscv/howto/wiki/KVM-RISCV64-on-Spike > > > > > > Changes since v19: > > > - Rebased on Linux-5.15-rc3 > > > - Converted kvm_err() to kvm_debug() in kvm_set_spte_gfn() function > > > added by PATCH11 > > > > > > Changes since v18: > > > - Rebased on Linux-5.14-rc3 > > > - Moved to new KVM debugfs interface > > > - Dropped PATCH17 of v18 series for having KVM RISC-V in drivers/staging > > > > > > Changes since v17: > > > - Rebased on Linux-5.13-rc2 > > > - Moved to new KVM MMU notifier APIs > > > - Removed redundant kvm_arch_vcpu_uninit() > > > - Moved KVM RISC-V sources to drivers/staging for compliance with > > > Linux RISC-V patch acceptance policy > > > > > > Changes since v16: > > > - Rebased on Linux-5.12-rc5 > > > - Remove redundant kvm_arch_create_memslot(), kvm_arch_vcpu_setup(), > > > kvm_arch_vcpu_init(), kvm_arch_has_vcpu_debugfs(), and > > > kvm_arch_create_vcpu_debugfs() from PATCH5 > > > - Make stage2_wp_memory_region() and stage2_ioremap() as static > > > in PATCH13 > > > > > > Changes since v15: > > > - Rebased on Linux-5.11-rc3 > > > - Fixed kvm_stage2_map() to use gfn_to_pfn_prot() for determing > > > writeability of a host pfn. > > > - Use "__u64" in-place of "u64" and "__u32" in-place of "u32" for > > > uapi/asm/kvm.h > > > > > > Changes since v14: > > > - Rebased on Linux-5.10-rc3 > > > - Fixed Stage2 (G-stage) PDG allocation to ensure it is 16KB aligned > > > > > > Changes since v13: > > > - Rebased on Linux-5.9-rc3 > > > - Fixed kvm_riscv_vcpu_set_reg_csr() for SIP updation in PATCH5 > > > - Fixed instruction length computation in PATCH7 > > > - Added ioeventfd support in PATCH7 > > > - Ensure HSTATUS.SPVP is set to correct value before using HLV/HSV > > > intructions in PATCH7 > > > - Fixed stage2_map_page() to set PTE 'A' and 'D' bits correctly > > > in PATCH10 > > > - Added stage2 dirty page logging in PATCH10 > > > - Allow KVM user-space to SET/GET SCOUNTER CSR in PATCH5 > > > - Save/restore SCOUNTEREN in PATCH6 > > > - Reduced quite a few instructions for __kvm_riscv_switch_to() by > > > using CSR swap instruction in PATCH6 > > > - Detect and use Sv48x4 when available in PATCH10 > > > > > > Changes since v12: > > > - Rebased patches on Linux-5.8-rc4 > > > - By default enable all counters in HCOUNTEREN > > > - RISC-V H-Extension v0.6.1 spec support > > > > > > Changes since v11: > > > - Rebased patches on Linux-5.7-rc3 > > > - Fixed typo in typecast of stage2_map_size define > > > - Introduced struct kvm_cpu_trap to represent trap details and > > > use it as function parameter wherever applicable > > > - Pass memslot to kvm_riscv_stage2_map() for supporing dirty page > > > logging in future > > > - RISC-V H-Extension v0.6 spec support > > > - Send-out first three patches as separate series so that it can > > > be taken by Palmer for Linux RISC-V > > > > > > Changes since v10: > > > - Rebased patches on Linux-5.6-rc5 > > > - Reduce RISCV_ISA_EXT_MAX from 256 to 64 > > > - Separate PATCH for removing N-extension related defines > > > - Added comments as requested by Palmer > > > - Fixed HIDELEG CSR programming > > > > > > Changes since v9: > > > - Rebased patches on Linux-5.5-rc3 > > > - Squash PATCH19 and PATCH20 into PATCH5 > > > - Squash PATCH18 into PATCH11 > > > - Squash PATCH17 into PATCH16 > > > - Added ONE_REG interface for VCPU timer in PATCH13 > > > - Use HTIMEDELTA for VCPU timer in PATCH13 > > > - Updated KVM RISC-V mailing list in MAINTAINERS entry > > > - Update KVM kconfig option to depend on RISCV_SBI and MMU > > > - Check for SBI v0.2 and SBI v0.2 RFENCE extension at boot-time > > > - Use SBI v0.2 RFENCE extension in VMID implementation > > > - Use SBI v0.2 RFENCE extension in Stage2 MMU implementation > > > - Use SBI v0.2 RFENCE extension in SBI implementation > > > - Moved to RISC-V Hypervisor v0.5 draft spec > > > - Updated Documentation/virt/kvm/api.txt for timer ONE_REG interface > > > > > > Changes since v8: > > > - Rebased series on Linux-5.4-rc3 and Atish's SBI v0.2 patches > > > - Use HRTIMER_MODE_REL instead of HRTIMER_MODE_ABS in timer emulation > > > - Fixed kvm_riscv_stage2_map() to handle hugepages > > > - Added patch to forward unhandled SBI calls to user-space > > > - Added patch for iterative/recursive stage2 page table programming > > > - Added patch to remove per-CPU vsip_shadow variable > > > - Added patch to fix race-condition in kvm_riscv_vcpu_sync_interrupts() > > > > > > Changes since v7: > > > - Rebased series on Linux-5.4-rc1 and Atish's SBI v0.2 patches > > > - Removed PATCH1, PATCH3, and PATCH20 because these already merged > > > - Use kernel doc style comments for ISA bitmap functions > > > - Don't parse X, Y, and Z extension in riscv_fill_hwcap() because it will > > > be added in-future > > > - Mark KVM RISC-V kconfig option as EXPERIMENTAL > > > - Typo fix in commit description of PATCH6 of v7 series > > > - Use separate structs for CORE and CSR registers of ONE_REG interface > > > - Explicitly include asm/sbi.h in kvm/vcpu_sbi.c > > > - Removed implicit switch-case fall-through in kvm_riscv_vcpu_exit() > > > - No need to set VSSTATUS.MXR bit in kvm_riscv_vcpu_unpriv_read() > > > - Removed register for instruction length in kvm_riscv_vcpu_unpriv_read() > > > - Added defines for checking/decoding instruction length > > > - Added separate patch to forward unhandled SBI calls to userspace tool > > > > > > Changes since v6: > > > - Rebased patches on Linux-5.3-rc7 > > > - Added "return_handled" in struct kvm_mmio_decode to ensure that > > > kvm_riscv_vcpu_mmio_return() updates SEPC only once > > > - Removed trap_stval parameter from kvm_riscv_vcpu_unpriv_read() > > > - Updated git repo URL in MAINTAINERS entry > > > > > > Changes since v5: > > > - Renamed KVM_REG_RISCV_CONFIG_TIMEBASE register to > > > KVM_REG_RISCV_CONFIG_TBFREQ register in ONE_REG interface > > > - Update SPEC in kvm_riscv_vcpu_mmio_return() for MMIO exits > > > - Use switch case instead of illegal instruction opcode table for simplicity > > > - Improve comments in stage2_remote_tlb_flush() for a potential remote TLB > > > flush optimization > > > - Handle all unsupported SBI calls in default case of > > > kvm_riscv_vcpu_sbi_ecall() function > > > - Fixed kvm_riscv_vcpu_sync_interrupts() for software interrupts > > > - Improved unprivilege reads to handle traps due to Guest stage1 page table > > > - Added separate patch to document RISC-V specific things in > > > Documentation/virt/kvm/api.txt > > > > > > Changes since v4: > > > - Rebased patches on Linux-5.3-rc5 > > > - Added Paolo's Acked-by and Reviewed-by > > > - Updated mailing list in MAINTAINERS entry > > > > > > Changes since v3: > > > - Moved patch for ISA bitmap from KVM prep series to this series > > > - Make vsip_shadow as run-time percpu variable instead of compile-time > > > - Flush Guest TLBs on all Host CPUs whenever we run-out of VMIDs > > > > > > Changes since v2: > > > - Removed references of KVM_REQ_IRQ_PENDING from all patches > > > - Use kvm->srcu within in-kernel KVM run loop > > > - Added percpu vsip_shadow to track last value programmed in VSIP CSR > > > - Added comments about irqs_pending and irqs_pending_mask > > > - Used kvm_arch_vcpu_runnable() in-place-of kvm_riscv_vcpu_has_interrupt() > > > in system_opcode_insn() > > > - Removed unwanted smp_wmb() in kvm_riscv_stage2_vmid_update() > > > - Use kvm_flush_remote_tlbs() in kvm_riscv_stage2_vmid_update() > > > - Use READ_ONCE() in kvm_riscv_stage2_update_hgatp() for vmid > > > > > > Changes since v1: > > > - Fixed compile errors in building KVM RISC-V as module > > > - Removed unused kvm_riscv_halt_guest() and kvm_riscv_resume_guest() > > > - Set KVM_CAP_SYNC_MMU capability only after MMU notifiers are implemented > > > - Made vmid_version as unsigned long instead of atomic > > > - Renamed KVM_REQ_UPDATE_PGTBL to KVM_REQ_UPDATE_HGATP > > > - Renamed kvm_riscv_stage2_update_pgtbl() to kvm_riscv_stage2_update_hgatp() > > > - Configure HIDELEG and HEDELEG in kvm_arch_hardware_enable() > > > - Updated ONE_REG interface for CSR access to user-space > > > - Removed irqs_pending_lock and use atomic bitops instead > > > - Added separate patch for FP ONE_REG interface > > > - Added separate patch for updating MAINTAINERS file > > > > > > Anup Patel (13): > > > RISC-V: Add hypervisor extension related CSR defines > > > RISC-V: Add initial skeletal KVM support > > > RISC-V: KVM: Implement VCPU create, init and destroy functions > > > RISC-V: KVM: Implement VCPU interrupts and requests handling > > > RISC-V: KVM: Implement KVM_GET_ONE_REG/KVM_SET_ONE_REG ioctls > > > RISC-V: KVM: Implement VCPU world-switch > > > RISC-V: KVM: Handle MMIO exits for VCPU > > > RISC-V: KVM: Handle WFI exits for VCPU > > > RISC-V: KVM: Implement VMID allocator > > > RISC-V: KVM: Implement stage2 page table programming > > > RISC-V: KVM: Implement MMU notifiers > > > RISC-V: KVM: Document RISC-V specific parts of KVM API > > > RISC-V: KVM: Add MAINTAINERS entry > > > > > > Atish Patra (4): > > > RISC-V: KVM: Add timer functionality > > > RISC-V: KVM: FP lazy save/restore > > > RISC-V: KVM: Implement ONE REG interface for FP registers > > > RISC-V: KVM: Add SBI v0.1 support > > > > > > Documentation/virt/kvm/api.rst | 193 ++++- > > > MAINTAINERS | 12 + > > > arch/riscv/Kconfig | 1 + > > > arch/riscv/Makefile | 1 + > > > arch/riscv/include/asm/csr.h | 87 +++ > > > arch/riscv/include/asm/kvm_host.h | 266 +++++++ > > > arch/riscv/include/asm/kvm_types.h | 7 + > > > arch/riscv/include/asm/kvm_vcpu_timer.h | 44 ++ > > > arch/riscv/include/uapi/asm/kvm.h | 128 +++ > > > arch/riscv/kernel/asm-offsets.c | 156 ++++ > > > arch/riscv/kvm/Kconfig | 36 + > > > arch/riscv/kvm/Makefile | 25 + > > > arch/riscv/kvm/main.c | 118 +++ > > > arch/riscv/kvm/mmu.c | 802 +++++++++++++++++++ > > > arch/riscv/kvm/tlb.S | 74 ++ > > > arch/riscv/kvm/vcpu.c | 997 ++++++++++++++++++++++++ > > > arch/riscv/kvm/vcpu_exit.c | 701 +++++++++++++++++ > > > arch/riscv/kvm/vcpu_sbi.c | 185 +++++ > > > arch/riscv/kvm/vcpu_switch.S | 400 ++++++++++ > > > arch/riscv/kvm/vcpu_timer.c | 225 ++++++ > > > arch/riscv/kvm/vm.c | 97 +++ > > > arch/riscv/kvm/vmid.c | 120 +++ > > > drivers/clocksource/timer-riscv.c | 9 + > > > include/clocksource/timer-riscv.h | 16 + > > > include/uapi/linux/kvm.h | 8 + > > > 25 files changed, 4699 insertions(+), 9 deletions(-) > > > create mode 100644 arch/riscv/include/asm/kvm_host.h > > > create mode 100644 arch/riscv/include/asm/kvm_types.h > > > create mode 100644 arch/riscv/include/asm/kvm_vcpu_timer.h > > > create mode 100644 arch/riscv/include/uapi/asm/kvm.h > > > create mode 100644 arch/riscv/kvm/Kconfig > > > create mode 100644 arch/riscv/kvm/Makefile > > > create mode 100644 arch/riscv/kvm/main.c > > > create mode 100644 arch/riscv/kvm/mmu.c > > > create mode 100644 arch/riscv/kvm/tlb.S > > > create mode 100644 arch/riscv/kvm/vcpu.c > > > create mode 100644 arch/riscv/kvm/vcpu_exit.c > > > create mode 100644 arch/riscv/kvm/vcpu_sbi.c > > > create mode 100644 arch/riscv/kvm/vcpu_switch.S > > > create mode 100644 arch/riscv/kvm/vcpu_timer.c > > > create mode 100644 arch/riscv/kvm/vm.c > > > create mode 100644 arch/riscv/kvm/vmid.c > > > create mode 100644 include/clocksource/timer-riscv.h > > > > > > -- > > > 2.25.1 > > > > > > > The RISC-V H-extension is now frozen. Please refer to the latest > > RISC-V privilege specification v1.12 which is in public review. > > https://github.com/riscv/riscv-isa-manual/releases/download/riscv-privileged-20210915-public-review/riscv-privileged-20210915-public-review.pdf > > > > Currently, the RISC-V H-extension is on it's way to being ratified. > > https://wiki.riscv.org/display/TECH/ISA+Extensions+On+Deck+for+Freeze+Milestone > > https://wiki.riscv.org/display/TECH/ISA+Extensions+On+Deck+-+Ready+for+Ratification+Milestone > > > > Here's the announcement on twitter from Mark (CTO, RISC-V International) > > https://twitter.com/mark_riscv/status/1441375977624375296 > > > > This means the KVM RISC-V series now satisfies the > > requirements of the Linux RISC-V patch acceptance policy. > > > > Can we consider the KVM RISC-V series for Linux-5.16 ? > > > > Regards, > > Anup > > Hi Anup > > I have tried this patchset, but have problems starting the kvm on host linux. > Both Qemu and Spike are unable to run kvm. > > 1. Qemu: have the following error when starting kvm. > > [ 17.877101] Run /init as init process > [ 217.908013] kvm [61]: VCPU exit error -14 > [ 217.908577] kvm [61]: SEPC=0x7e86a SSTATUS=0x4020 HSTATUS=0x200200080 > [ 217.909626] kvm [61]: SCAUSE=0x2 STVAL=0x20866633 HTVAL=0x0 HTINST=0x0 > KVM_RUN failed: Bad address > > 2. Spike: Stop at this line when starting kvm. > > [ 1.116675] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver > [ 1.120875] NET: Registered PF_PACKET protocol family > [ 1.123830] 9pnet: Installing 9P2000 support > [ 1.127935] Key type dns_resolver registered > [ 1.130390] debug_vm_pgtable: [debug_vm_pgtable ]: > Validating architecture page table helpers It's strange everything works for me on QEMU at least. Although, I did not have time to try on Spike. > > These are the git repo that I'm using: > Linux: https://github.com/avpatel/linux/tree/riscv_kvm_v20 > Qemu: https://gitlab.com/qemu-project/qemu.git (master branch) > Spike: https://github.com/riscv/riscv-isa-sim.git (master branch) > kvm-tool: https//github.com/avpatel/kvmtool.git You should be using riscv_v9 branch of https//github.com/avpatel/kvmtool.git > > Any other things that need to be updated to make it work? If you want to use exact same QEMU which I am using then PULL riscv_aia_v2 branch of https://github.com/avpatel/qemu.git I have provided my QEMU log below as well. Regards, Anup > > Note, previous v19 patchset is okay. > > Regards > Ley Foon anup@anup-ubuntu64-vm:~/Work/riscv-test$ qemu-system-riscv64 -cpu rv64,x-h=true -M virt -m 512M -nographic -bios opensbi/build/platform/generic/firmware/fw_jump.bin -kernel ./build-riscv64/arch/riscv/boot/Image -initrd ./rootfs_kvm_riscv64.img -append "root=/dev/ram rw console=ttyS0 earlycon=sbi" -smp 6 OpenSBI v0.9-165-g4478809 ____ _____ ____ _____ / __ \ / ____| _ \_ _| | | | |_ __ ___ _ __ | (___ | |_) || | | | | | '_ \ / _ \ '_ \ \___ \| _ < | | | |__| | |_) | __/ | | |____) | |_) || |_ \____/| .__/ \___|_| |_|_____/|____/_____| | | |_| Platform Name : riscv-virtio,qemu Platform Features : medeleg Platform HART Count : 6 Platform IPI Device : aclint-mswi Platform Timer Device : aclint-mtimer @ 10000000Hz Platform Console Device : uart8250 Platform HSM Device : --- Platform SysReset Device : sifive_test Firmware Base : 0x80000000 Firmware Size : 304 KB Runtime SBI Version : 0.3 Domain0 Name : root Domain0 Boot HART : 2 Domain0 HARTs : 0*,1*,2*,3*,4*,5* Domain0 Region00 : 0x0000000002000000-0x000000000200ffff (I) Domain0 Region01 : 0x0000000080000000-0x000000008007ffff () Domain0 Region02 : 0x0000000000000000-0xffffffffffffffff (R,W,X) Domain0 Next Address : 0x0000000080200000 Domain0 Next Arg1 : 0x0000000082200000 Domain0 Next Mode : S-mode Domain0 SysReset : yes Boot HART ID : 2 Boot HART Domain : root Boot HART ISA : rv64imafdcsuh Boot HART Features : scounteren,mcounteren,time Boot HART PMP Count : 16 Boot HART PMP Granularity : 4 Boot HART PMP Address Bits: 54 Boot HART MHPM Count : 0 Boot HART MIDELEG : 0x0000000000001666 Boot HART MEDELEG : 0x0000000000f0b509 [ 0.000000] Linux version 5.15.0-rc3-00020-g3940bf8c7e02 (anup@anup-ubuntu64-vm) (riscv64-unknown-linux-gnu-gcc (GCC) 9.2.0, GNU ld (GNU Binutils) 2.34) #3 SMP Mon Sep 27 11:55:05 IST 2021 [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000 [ 0.000000] Machine model: riscv-virtio,qemu [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') [ 0.000000] printk: bootconsole [sbi0] enabled [ 0.000000] efi: UEFI not found. [ 0.000000] Zone ranges: [ 0.000000] DMA32 [mem 0x0000000080200000-0x000000009fffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000080200000-0x000000009fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000009fffffff] [ 0.000000] SBI specification v0.3 detected [ 0.000000] SBI implementation ID=0x1 Version=0x9 [ 0.000000] SBI TIME extension detected [ 0.000000] SBI IPI extension detected [ 0.000000] SBI RFENCE extension detected [ 0.000000] SBI SRST extension detected [ 0.000000] SBI v0.2 HSM extension detected [ 0.000000] riscv: ISA extensions acdfhimsu [ 0.000000] riscv: ELF capabilities acdfim [ 0.000000] percpu: Embedded 17 pages/cpu s31080 r8192 d30360 u69632 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 128775 [ 0.000000] Kernel command line: root=/dev/ram rw console=ttyS0 earlycon=sbi [ 0.000000] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes, linear) [ 0.000000] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes, linear) [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off [ 0.000000] Virtual kernel memory layout: [ 0.000000] fixmap : 0xffffffcefee00000 - 0xffffffceff000000 (2048 kB) [ 0.000000] pci io : 0xffffffceff000000 - 0xffffffcf00000000 ( 16 MB) [ 0.000000] vmemmap : 0xffffffcf00000000 - 0xffffffcfffffffff (4095 MB) [ 0.000000] vmalloc : 0xffffffd000000000 - 0xffffffdfffffffff (65535 MB) [ 0.000000] lowmem : 0xffffffe000000000 - 0xffffffe01fe00000 ( 510 MB) [ 0.000000] kernel : 0xffffffff80000000 - 0xffffffffffffffff (2047 MB) [ 0.000000] Memory: 461472K/522240K available (7348K kernel code, 4928K rwdata, 4096K rodata, 2147K init, 299K bss, 60768K reserved, 0K cma-reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=6, Nodes=1 [ 0.000000] rcu: Hierarchical RCU implementation. [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=6. [ 0.000000] rcu: RCU debug extended QS entry/exit. [ 0.000000] Tracing variant of Tasks RCU enabled. [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=6 [ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 [ 0.000000] riscv-intc: 64 local interrupts mapped [ 0.000000] plic: plic@c000000: mapped 53 interrupts with 6 handlers for 12 contexts. [ 0.000000] random: get_random_bytes called from start_kernel+0x4be/0x6d0 with crng_init=0 [ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [2] [ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x24e6a1710, max_idle_ns: 440795202120 ns [ 0.000098] sched_clock: 64 bits at 10MHz, resolution 100ns, wraps every 4398046511100ns [ 0.007687] Console: colour dummy device 80x25 [ 0.022506] Calibrating delay loop (skipped), value calculated using timer frequency.. 20.00 BogoMIPS (lpj=40000) [ 0.024665] pid_max: default: 32768 minimum: 301 [ 0.028336] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes, linear) [ 0.037197] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes, linear) [ 0.099528] ASID allocator disabled [ 0.102334] rcu: Hierarchical SRCU implementation. [ 0.105587] EFI services will not be available. [ 0.111331] smp: Bringing up secondary CPUs ... [ 0.142352] smp: Brought up 1 node, 6 CPUs [ 0.169452] devtmpfs: initialized [ 0.188459] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [ 0.191145] futex hash table entries: 2048 (order: 5, 131072 bytes, linear) [ 0.203626] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 0.274557] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 0.287213] vgaarb: loaded [ 0.289575] SCSI subsystem initialized [ 0.296764] usbcore: registered new interface driver usbfs [ 0.297502] usbcore: registered new interface driver hub [ 0.299242] usbcore: registered new device driver usb [ 0.331551] clocksource: Switched to clocksource riscv_clocksource [ 0.392658] NET: Registered PF_INET protocol family [ 0.394693] IP idents hash table entries: 8192 (order: 4, 65536 bytes, linear) [ 0.400489] tcp_listen_portaddr_hash hash table entries: 256 (order: 1, 10240 bytes, linear) [ 0.401236] TCP established hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.402002] TCP bind hash table entries: 4096 (order: 5, 131072 bytes, linear) [ 0.402824] TCP: Hash tables configured (established 4096 bind 4096) [ 0.405079] UDP hash table entries: 256 (order: 2, 24576 bytes, linear) [ 0.406084] UDP-Lite hash table entries: 256 (order: 2, 24576 bytes, linear) [ 0.409396] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 0.417946] RPC: Registered named UNIX socket transport module. [ 0.418574] RPC: Registered udp transport module. [ 0.418907] RPC: Registered tcp transport module. [ 0.419565] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.420333] PCI: CLS 0 bytes, default 64 [ 0.421657] kvm [1]: hypervisor extension available [ 0.422370] kvm [1]: using Sv48x4 G-stage page table format [ 0.422849] kvm [1]: VMID 14 bits available [ 0.430261] workingset: timestamp_bits=62 max_order=17 bucket_order=0 [ 0.433208] Unpacking initramfs... [ 0.453698] NFS: Registering the id_resolver key type [ 0.455536] Key type id_resolver registered [ 0.455945] Key type id_legacy registered [ 0.456826] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 0.457448] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 0.460062] 9p: Installing v9fs 9p2000 file system support [ 0.464474] NET: Registered PF_ALG protocol family [ 0.472960] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251) [ 0.473738] io scheduler mq-deadline registered [ 0.474674] io scheduler kyber registered [ 0.500235] pci-host-generic 30000000.pci: host bridge /soc/pci@30000000 ranges: [ 0.501816] pci-host-generic 30000000.pci: IO 0x0003000000..0x000300ffff -> 0x0000000000 [ 0.504308] pci-host-generic 30000000.pci: MEM 0x0040000000..0x007fffffff -> 0x0040000000 [ 0.504957] pci-host-generic 30000000.pci: MEM 0x0400000000..0x07ffffffff -> 0x0400000000 [ 0.506348] pci-host-generic 30000000.pci: Memory resource size exceeds max for 32 bits [ 0.510652] pci-host-generic 30000000.pci: ECAM at [mem 0x30000000-0x3fffffff] for [bus 00-ff] [ 0.517617] pci-host-generic 30000000.pci: PCI host bridge to bus 0000:00 [ 0.519442] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.520018] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 0.520772] pci_bus 0000:00: root bus resource [mem 0x40000000-0x7fffffff] [ 0.521355] pci_bus 0000:00: root bus resource [mem 0x400000000-0x7ffffffff] [ 0.524395] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 0.679883] Freeing initrd memory: 31888K [ 0.815789] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled [ 0.825590] printk: console [ttyS0] disabled [ 0.829565] 10000000.uart: ttyS0 at MMIO 0x10000000 (irq = 2, base_baud = 230400) is a 16550A [ 0.833171] printk: console [ttyS0] enabled [ 0.833171] printk: console [ttyS0] enabled [ 0.834330] printk: bootconsole [sbi0] disabled [ 0.834330] printk: bootconsole [sbi0] disabled [ 0.838103] [drm] radeon kernel modesetting enabled. [ 0.866158] loop: module loaded [ 0.872649] libphy: Fixed MDIO Bus: probed [ 0.874646] tun: Universal TUN/TAP device driver, 1.6 [ 0.877187] e1000e: Intel(R) PRO/1000 Network Driver [ 0.877444] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 0.878396] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.878808] ehci-pci: EHCI PCI platform driver [ 0.879603] ehci-platform: EHCI generic platform driver [ 0.880429] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.880848] ohci-pci: OHCI PCI platform driver [ 0.881460] ohci-platform: OHCI generic platform driver [ 0.883955] usbcore: registered new interface driver uas [ 0.884628] usbcore: registered new interface driver usb-storage [ 0.886314] mousedev: PS/2 mouse device common for all mice [ 0.890923] goldfish_rtc 101000.rtc: registered as rtc0 [ 0.892046] goldfish_rtc 101000.rtc: setting system clock to 2021-10-01T10:33:38 UTC (1633084418) [ 0.899464] syscon-poweroff soc:poweroff: pm_power_off already claimed for sbi_srst_power_off [ 0.900071] syscon-poweroff: probe of soc:poweroff failed with error -16 [ 0.901020] sdhci: Secure Digital Host Controller Interface driver [ 0.901287] sdhci: Copyright(c) Pierre Ossman [ 0.901751] sdhci-pltfm: SDHCI platform and OF driver helper [ 0.904482] usbcore: registered new interface driver usbhid [ 0.904790] usbhid: USB HID core driver [ 0.908639] NET: Registered PF_INET6 protocol family [ 0.927664] Segment Routing with IPv6 [ 0.928044] In-situ OAM (IOAM) with IPv6 [ 0.928708] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver [ 0.932629] NET: Registered PF_PACKET protocol family [ 0.934783] 9pnet: Installing 9P2000 support [ 0.935834] Key type dns_resolver registered [ 0.939287] debug_vm_pgtable: [debug_vm_pgtable ]: Validating architecture page table helpers [ 0.997012] Freeing unused kernel image (initmem) memory: 2144K [ 1.009790] Run /init as init process _ _ | ||_| | | _ ____ _ _ _ _ | || | _ \| | | |\ \/ / | || | | | | |_| |/ \ |_||_|_| |_|\____|\_/\_/ Busybox Rootfs Please press Enter to activate this console. / # / # / # / # / # ./apps/lkvm-static run -m 256 -c2 --console serial -p "console=ttyS0 earlyco n=sbi" -k ./apps/Image --debug # lkvm run -k ./apps/Image -m 256 -c 2 --name guest-73 Info: (riscv/kvm.c) kvm__arch_load_kernel_image:115: Loaded kernel to 0x80200000 (19828224 bytes) Info: (riscv/kvm.c) kvm__arch_load_kernel_image:126: Placing fdt at 0x81c00000 - 0x8fffffff Info: (virtio/mmio.c) virtio_mmio_init:325: virtio-mmio.devices=0x200@0x10000000:5 Info: (virtio/mmio.c) virtio_mmio_init:325: virtio-mmio.devices=0x200@0x10000200:6 Info: (virtio/mmio.c) virtio_mmio_init:325: virtio-mmio.devices=0x200@0x10000400:7 [ 0.000000] Linux version 5.15.0-rc3-00020-g3940bf8c7e02 (anup@anup-ubuntu64-vm) (riscv64[ 18.277856] random: fast init done -unknown-linux-gnu-gcc (GCC) 9.2.0, GNU ld (GNU Binutils) 2.34) #3 SMP Mon Sep 27 11:55:05 IST 2021 [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000 [ 0.000000] Machine model: linux,dummy-virt [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') [ 0.000000] printk: bootconsole [sbi0] enabled [ 0.000000] efi: UEFI not found. [ 0.000000] Zone ranges: [ 0.000000] DMA32 [mem 0x0000000080200000-0x000000008fffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000080200000-0x000000008fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x000000008fffffff] [ 0.000000] SBI specification v0.1 detected [ 0.000000] riscv: ISA extensions acdfimsu [ 0.000000] riscv: ELF capabilities acdfim [ 0.000000] percpu: Embedded 17 pages/cpu s31080 r8192 d30360 u69632 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 64135 [ 0.000000] Kernel command line: console=ttyS0 rw rootflags=trans=virtio,version=9p2000.L,cache=loose rootfstype=9p init=/virt/init ip=dhcp console=ttyS0 earlycon=sbi [ 0.000000] Dentry cache hash table entries: 32768 (order: 6, 262144 bytes, linear) [ 0.000000] Inode-cache hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off [ 0.000000] Virtual kernel memory layout: [ 0.000000] fixmap : 0xffffffcefee00000 - 0xffffffceff000000 (2048 kB) [ 0.000000] pci io : 0xffffffceff000000 - 0xffffffcf00000000 ( 16 MB) [ 0.000000] vmemmap : 0xffffffcf00000000 - 0xffffffcfffffffff (4095 MB) [ 0.000000] vmalloc : 0xffffffd000000000 - 0xffffffdfffffffff (65535 MB) [ 0.000000] lowmem : 0xffffffe000000000 - 0xffffffe00fe00000 ( 254 MB) [ 0.000000] kernel : 0xffffffff80000000 - 0xffffffffffffffff (2047 MB) [ 0.000000] Memory: 235480K/260096K available (7348K kernel code, 4928K rwdata, 4096K rodata, 2147K init, 299K bss, 24616K reserved, 0K cma-reserved) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] rcu: Hierarchical RCU implementation. [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 0.000000] rcu: RCU debug extended QS entry/exit. [ 0.000000] Tracing variant of Tasks RCU enabled. [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 [ 0.000000] riscv-intc: 64 local interrupts mapped [ 0.000000] plic: interrupt-controller@0c000000: mapped 1023 interrupts with 2 handlers for 4 contexts. [ 0.000000] random: get_random_bytes called from start_kernel+0x4be/0x6d0 with crng_init=0 [ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [0] [ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x24e6a1710, max_idle_ns: 440795202120 ns [ 0.000105] sched_clock: 64 bits at 10MHz, resolution 100ns, wraps every 4398046511100ns [ 0.047895] Console: colour dummy device 80x25 [ 0.070813] Calibrating delay loop (skipped), value calculated using timer frequency.. 20.00 BogoMIPS (lpj=40000) [ 0.097962] pid_max: default: 32768 minimum: 301 [ 0.120511] Mount-cache hash table entries: 512 (order: 0, 4096 bytes, linear) [ 0.139480] Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes, linear) [ 0.317809] ASID allocator disabled [ 0.327541] rcu: Hierarchical SRCU implementation. [ 0.356508] EFI services will not be available. [ 0.403586] smp: Bringing up secondary CPUs ... [ 0.458170] smp: Brought up 1 node, 2 CPUs [ 0.529462] devtmpfs: initialized [ 0.603517] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [ 0.627416] futex hash table entries: 512 (order: 3, 32768 bytes, linear) [ 0.691307] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 0.857061] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 0.903144] vgaarb: loaded [ 0.930196] SCSI subsystem initialized [ 0.971577] usbcore: registered new interface driver usbfs [ 0.992211] usbcore: registered new interface driver hub [ 1.014991] usbcore: registered new device driver usb [ 1.089570] clocksource: Switched to clocksource riscv_clocksource [ 1.312442] NET: Registered PF_INET protocol family [ 1.332297] IP idents hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 1.368581] tcp_listen_portaddr_hash hash table entries: 128 (order: 0, 5120 bytes, linear) [ 1.389779] TCP established hash table entries: 2048 (order: 2, 16384 bytes, linear) [ 1.415814] TCP bind hash table entries: 2048 (order: 4, 65536 bytes, linear) [ 1.451789] TCP: Hash tables configured (established 2048 bind 2048) [ 1.492552] UDP hash table entries: 256 (order: 2, 24576 bytes, linear) [ 1.516653] UDP-Lite hash table entries: 256 (order: 2, 24576 bytes, linear) [ 1.551271] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 1.644965] RPC: Registered named UNIX socket transport module. [ 1.662890] RPC: Registered udp transport module. [ 1.672738] RPC: Registered tcp transport module. [ 1.684608] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 1.699605] PCI: CLS 0 bytes, default 64 [ 1.712981] kvm [1]: hypervisor extension not available [ 1.751290] workingset: timestamp_bits=62 max_order=16 bucket_order=0 [ 1.900334] NFS: Registering the id_resolver key type [ 1.911896] Key type id_resolver registered [ 1.920084] Key type id_legacy registered [ 1.936737] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 1.958536] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 1.984251] 9p: Installing v9fs 9p2000 file system support [ 2.018560] NET: Registered PF_ALG protocol family [ 2.031591] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251) [ 2.054728] io scheduler mq-deadline registered [ 2.066140] io scheduler kyber registered [ 2.123648] pci-host-generic 30000000.pci: host bridge /smb/pci ranges: [ 2.140214] pci-host-generic 30000000.pci: IO 0x0000000000..0x000000ffff -> 0x0000000000 [ 2.159639] pci-host-generic 30000000.pci: MEM 0x0040000000..0x007fffffff -> 0x0040000000 [ 2.186223] pci-host-generic 30000000.pci: ECAM at [mem 0x30000000-0x3fffffff] for [bus 00-01] [ 2.212533] pci-host-generic 30000000.pci: PCI host bridge to bus 0000:00 [ 2.230607] pci_bus 0000:00: root bus resource [bus 00-01] [ 2.244304] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 2.261587] pci_bus 0000:00: root bus resource [mem 0x40000000-0x7fffffff] [ 3.247473] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled [ 3.287475] printk: console [ttyS0] disabled [ 3.301067] 3f8.U6_16550A: ttyS0 at MMIO 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 3.339067] printk: console [ttyS0] enabled [ 3.339067] printk: console [ttyS0] enabled [ 3.379379] printk: bootconsole [sbi0] disabled [ 3.379379] printk: bootconsole [sbi0] disabled [ 3.424926] 2f8.U6_16550A: ttyS1 at MMIO 0x2f8 (irq = 6, base_baud = 115200) is a 16550A [ 3.474126] 3e8.U6_16550A: ttyS2 at MMIO 0x3e8 (irq = 7, base_baud = 115200) is a 16550A [ 3.518645] 2e8.U6_16550A: ttyS3 at MMIO 0x2e8 (irq = 8, base_baud = 115200) is a 16550A [ 3.569005] [drm] radeon kernel modesetting enabled. [ 3.764244] loop: module loaded [ 3.823261] libphy: Fixed MDIO Bus: probed [ 3.874746] tun: Universal TUN/TAP device driver, 1.6 [ 3.955899] net eth0: Fail to set guest offload. [ 3.974623] virtio_net virtio2 eth0: set_features() failed (-22); wanted 0x0000000000134829, left 0x0080000000134829 [ 4.039551] e1000e: Intel(R) PRO/1000 Network Driver [ 4.066605] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. [ 4.094301] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 4.121598] ehci-pci: EHCI PCI platform driver [ 4.139321] ehci-platform: EHCI generic platform driver [ 4.163482] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 4.190231] ohci-pci: OHCI PCI platform driver [ 4.211914] ohci-platform: OHCI generic platform driver [ 4.262796] usbcore: registered new interface driver uas [ 4.291123] usbcore: registered new interface driver usb-storage [ 4.315228] mousedev: PS/2 mouse device common for all mice [ 4.344139] sdhci: Secure Digital Host Controller Interface driver [ 4.377006] sdhci: Copyright(c) Pierre Ossman [ 4.400437] sdhci-pltfm: SDHCI platform and OF driver helper [ 4.438821] usbcore: registered new interface driver usbhid [ 4.464857] usbhid: USB HID core driver [ 4.513075] NET: Registered PF_INET6 protocol family [ 4.607772] Segment Routing with IPv6 [ 4.620961] In-situ OAM (IOAM) with IPv6 [ 4.647281] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver [ 4.689995] NET: Registered PF_PACKET protocol family [ 4.722695] 9pnet: Installing 9P2000 support [ 4.763733] Key type dns_resolver registered [ 4.795638] debug_vm_pgtable: [debug_vm_pgtable ]: Validating architecture page table helpers [ 4.926827] Sending DHCP requests ., OK [ 4.966566] IP-Config: Got DHCP answer from 192.168.33.1, my address is 192.168.33.15 [ 4.994534] IP-Config: Complete: [ 5.006236] device=eth0, hwaddr=02:15:15:15:15:15, ipaddr=192.168.33.15, mask=255.255.255.0, gw=192.168.33.1 [ 5.042790] host=192.168.33.15, domain=, nis-domain=(none) [ 5.065080] bootserver=192.168.33.1, rootserver=0.0.0.0, rootpath= [ 5.065399] nameserver0=192.168.33.1 [ 5.183771] VFS: Mounted root (9p filesystem) on device 0:15. [ 5.223392] devtmpfs: mounted [ 5.470393] Freeing unused kernel image (initmem) memory: 2144K [ 5.503256] Run /virt/init as init process Mounting... / # / # [ 6.766025] random: fast init done / # cat /proc/interrupts CPU0 CPU1 1: 129 0 SiFive PLIC 5 Edge virtio0 2: 175 0 SiFive PLIC 6 Edge virtio1 3: 11 0 SiFive PLIC 7 Edge virtio2 4: 57 0 SiFive PLIC 1 Edge ttyS0 5: 765 884 RISC-V INTC 5 Edge riscv-timer IPI0: 3 19 Rescheduling interrupts IPI1: 792 845 Function call interrupts IPI2: 0 0 CPU stop interrupts IPI3: 0 0 IRQ work interrupts IPI4: 0 0 Timer broadcast interrupts / #
