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KVM RISC V 64bit on FireSim
Rajnesh Kanwal edited this page Feb 2, 2023
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Currently, we can boot RISC-V 64bit SMP Guest using KVM RISC-V on FireSim. The FPGA design is based on Rocket core with H extension enabled. The Rocket-H design is developed by Sandro and his team from University of Minho, Portugal. They have made it available in AWS as an AFI image using Firesim. This document will focus on the instructions on how to build/run various components to boot Guest Linux using KVM RISC-V.
To achieve this, we need following components:
- Rocket core RISC-V Hypervisor Extension enabled image in FireSim
- OpenSBI Firmware
- Host & Guest Kernel Image
- KVM RISC-V module
- KVMTOOL
- Host RootFS with KVM RISC-V module, KVMTOOL and Guest Kernel
- AWS account with F1 access. The "eu-west-1" or "us-west-2" region must be selected as the AFI image is available in those two regions only.
The below sub-sections provide detailed steps to build and run RISC-V KVM on FireSim. All components except FireSim require a RISC-V 64bit cross-compiler so for we use Linux multilib toolchain from RISC-V GNU Compiler Toolchain project (Refer, https://github.com/riscv/riscv-gnu-toolchain). If you have a different RISC-V 64bit cross-compiler then set CROSS_COMPILE environment variable appropriately in steps below.
The Rocket-H design has limited memory and doesn't have any external IO support that can be used load rootfs. Thus, the host image has to include a initramfs while the guest can use the pre-built rootfs. Thus, we can't use use same RISC-V 64bit Linux kernel as Guest and Host kernel. We need to compile them separately.
git clone https://github.com/kvm-riscv/linux.git
export ARCH=riscv
export CROSS_COMPILE=riscv64-unknown-linux-gnu-
mkdir build-riscv64
make -C linux O=`pwd`/build-riscv64 defconfig
make -C linux O=`pwd`/build-riscv64
The above commands will create:
-
build-riscv64/arch/riscv/boot/Imagewhich will be our Guest and Host kernel -
build-riscv64/arch/riscv/kvm/kvm.kowhich will be our KVM RISC-V module
We need libfdt library in the cross-compile toolchain for compiling KVMTOOL RISC-V (described in next step). The libfdt library is generally not available in the cross-compile toolchain so we need to explicitly compile libfdt from DTC project and add it to CROSS_COMPILE SYSROOT directory.
git clone git://git.kernel.org/pub/scm/utils/dtc/dtc.git
cd dtc
export ARCH=riscv
export CROSS_COMPILE=riscv64-unknown-linux-gnu-
export CC="${CROSS_COMPILE}gcc -mabi=lp64d -march=rv64gc"
TRIPLET=$($CC -dumpmachine)
SYSROOT=$($CC -print-sysroot)
make libfdt
make NO_PYTHON=1 NO_YAML=1 DESTDIR=$SYSROOT PREFIX=/usr LIBDIR=/usr/lib64/lp64d install-lib install-includes
cd ..
The above commands will install cross-compiled libfdt library at $SYSROOT/usr/lib64/lp64d directory of cross-compile toolchain.
git clone https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git
export ARCH=riscv
export CROSS_COMPILE=riscv64-unknown-linux-gnu-
cd kvmtool
make lkvm-static
${CROSS_COMPILE}strip lkvm-static
cd ..
The above commands will create kvmtool/lkvm-static which will be our user-space tool for KVM RISC-V.
export ARCH=riscv
export CROSS_COMPILE=riscv64-unknown-linux-gnu-
git clone https://github.com/kvm-riscv/howto.git
wget https://busybox.net/downloads/busybox-1.33.1.tar.bz2
tar -C . -xvf ./busybox-1.33.1.tar.bz2
mv ./busybox-1.27.2 ./busybox-1.33.1-kvm-riscv64
cp -f ./howto/configs/busybox-1.33.1_defconfig busybox-1.33.1-kvm-riscv64/.config
make -C busybox-1.33.1-kvm-riscv64 oldconfig
make -C busybox-1.33.1-kvm-riscv64 install
mkdir -p busybox-1.33.1-kvm-riscv64/_install/etc/init.d
mkdir -p busybox-1.33.1-kvm-riscv64/_install/dev
mkdir -p busybox-1.33.1-kvm-riscv64/_install/proc
mkdir -p busybox-1.33.1-kvm-riscv64/_install/sys
mkdir -p busybox-1.33.1-kvm-riscv64/_install/apps
ln -sf /sbin/init busybox-1.33.1-kvm-riscv64/_install/init
cp -f ./howto/configs/busybox/fstab busybox-1.33.1-kvm-riscv64/_install/etc/fstab
cp -f ./howto/configs/busybox/rcS busybox-1.33.1-kvm-riscv64/_install/etc/init.d/rcS
cp -f ./howto/configs/busybox/motd busybox-1.33.1-kvm-riscv64/_install/etc/motd
cp -f ./kvmtool/lkvm-static busybox-1.33.1-kvm-riscv64/_install/apps
cp -f ./build-riscv64/arch/riscv/boot/Image busybox-1.33.1-kvm-riscv64/_install/apps
cp -f ./build-riscv64/arch/riscv/kvm/kvm.ko busybox-1.33.1-kvm-riscv64/_install/apps
cd busybox-1.33.1-kvm-riscv64/_install; find ./ | cpio -o -H newc > ../../rootfs_kvm_riscv64.cpio; cd -
The above commands will create rootfs_kvm_riscv64.cpio which will be our Host RootFS containing KVMTOOL and Guest Linux.
Include the compiled rootfs in kernel config by adding following lines to the .config parameter or from menuconfig.
CONFIG_INITRAMFS_SOURCE="/<rootfs path>/rootfs_kvm_riscv64.cpio"
CONFIG_INITRAMFS_ROOT_UID=0
CONFIG_INITRAMFS_ROOT_GID=0
CONFIG_INITRAMFS_COMPRESSION_NONE=y
Re-build the linux kernel image now.
make -C linux O=`pwd`/build-riscv64 oldconfig
make -C linux O=`pwd`/build-riscv64
git clone https://github.com/kvm-riscv/firesim.git
cd firesim
dtc rocket-firesim-minimal.dts > rocket-firesim-minimal.dtb
git clone https://github.com/riscv/opensbi.git
cd opensbi
export CROSS_COMPILE=riscv64-unknown-linux-gnu-
PLATFORM=generic FW_PAYLOAD_PATH=/<build path>/build-riscv64/arch/riscv/boot/Image FW_FDT_PATH=/<build path>/firesim/rocket-firesim-minimal.dtb
cd ..
The above commands will create opensbi/build/platform/generic/firmware/fw_payload.elf which will be the workload used for firesim.
These instructions are based on bao hypervisor instructions[1]
For FireSim Initial Setup/Installation please refer to the FireSim documentation:
https://docs.fires.im/en/latest/Initial-Setup/index.html
Note: While selecting the AMI, you can use the FPGA Developer AMI - 1.6.1
On your AWS machine, add our rocket-chip design:
cd firesim
git checkout eb7d1af4964814270b176d4e682fc999e8db561a
cd firesim/target-design/chipyard
git checkout 0e0c89cb1fa64eda74fa8e7dac438eae54a9df56
cd firesim/target-design/chipyard/generators/rocket-chip/
git remote add josecm https://github.com/josecm/rocket-chip.git
git fetch josecm
git checkout hyp
Edit the 'parameters.scala' file to include the useHype parameter:
firesim/target-design/chipyard/generators/boom/src/main/scala/common/parameters.scala
useSupervisor: Boolean = false,
useHype: Boolean = false,
useVM: Boolean = true,
Edit the 'ArianeTile.scala' file to include the useHype parameter:
firesim/target-design/chipyard/generators/ariane/src/main/scala/ArianeTile.scala
'val useSupervisor: Boolean = false'
'val useHype: Boolean = false'
'val useDebug: Boolean = true'
Edit the 'RocketConfigs.scala' file to define the QuadRocketHypConfig class:
firesim/target-design/chipyard/generators/chipyard/src/main/scala/config/RocketConfigs.scala
class QuadRocketHypConfig extends Config(
new freechips.rocketchip.subsystem.WithHyp ++
new QuadRocketConfig)
Note: As a sugestion, add the class at the top of the file
Edit the 'TargetConfigs.scala' file to include the QuadRocketHypConfig class:
firesim/target-design/chipyard/generators/firechip/src/main/scala/TargetConfigs.scala
class FireSimQuadRocketHypConfig extends Config(
new WithDefaultFireSimBridges ++
new WithDefaultMemModel ++
new WithFireSimConfigTweaks ++
new chipyard.QuadRocketHypConfig)
Note: As a suggestion, add the class after the definition of the FireSimQuadRocketConfig class
We will use a pre-built AFI image available in "us-west-2" and "eu-west-1" regions. If you want to build your own AFI image, please refer to [1].
Add these lines to firesim/deploy/config_hwdb.ini
[firesim-rocket-h-quadcore-no-nic-l2-llc4mb-ddr3]
agfi=agfi-0fc72a5b136b0f1e7
deploytripletoverride=None
customruntimeconfig=None
cd ~/firesim/deploy/workloads
mkdir kvm
Create a kvm.json file with the following content:
{
"benchmark_name" : "kvm",
"common_bootbinary" : "fw_payload.elf",
"common_rootfs" : "rootfs_kvm_riscv64.cpio",
"common_simulation_outputs" : ["uartlog"]
}
Upload the rootfs_kvm_riscv64.cpio and the final opensbi firmware image to ~/firesim/deploy/workloads/bao in the AWS machine.
The config_runtime.ini needs to be adopted for our usecase. The defaulthwconfig should be set to firesim-rocket-h-quadcore-no-nic-l2-llc4mb-ddr3 and the workload should be set to kvm.json that you created just now.
Here is the snippet of config_runtime.ini
defaulthwconfig=firesim-rocket-h-quadcore-no-nic-l2-llc4mb-ddr3
...
workloadname=kvm.json
Finally, please refer to the FireSim documentation "Running FireSim Single Node Simulations" to run the simulation.
In the uartlog, you should see the host linux booting. Once the host host Linux is booted completely, follow the below steps to start the guest.
mkdir /dev/hugepages
echo 64 > /proc/sys/vm/nr_hugepages
mount -t hugetlbfs hugetlbfs /dev/hugepages
insmod apps/kvm.ko
./apps/lkvm-static run -m 256 -c2 --console serial -p "console=ttyS0 earlycon" -k ./apps/Image --debug --hugetlbfs /dev/hugepages
Script started on Mon 01 Feb 2021 08:53:48 PM UTC
AFI PCI Vendor ID: 0x1d0f, Device ID 0xf000
Using xdma write queue: /dev/xdma0_h2c_0
Using xdma read queue: /dev/xdma0_c2h_0
UART0 is here (stdin/stdout).
command line for program 0. argc=56:
+permissive +mm_relaxFunctionalModel_0=0 +mm_openPagePolicy_0=1 +mm_backendLatency_0=2 +mm_schedulerWindowSize_0=8 +mm_transactionQueueDepth_0=8 +mm_dramTimings_tAL_0=0 +mm_dramTimings_tCAS_0=14 +mm_dramTimings_tCMD_0=1 +mm_dramTimings_tCWD_0=10 +mm_dramTimings_tCCD_0=4 +mm_dramTimings_tFAW_0=25 +mm_dramTimings_tRAS_0=33 +mm_dramTimings_tREFI_0=7800 +mm_dramTimings_tRC_0=47 +mm_dramTimings_tRCD_0=14 +mm_dramTimings_tRFC_0=160 +mm_dramTimings_tRRD_0=8 +mm_dramTimings_tRP_0=14 +mm_dramTimings_tRTP_0=8 +mm_dramTimings_tRTRS_0=2 +mm_dramTimings_tWR_0=15 +mm_dramTimings_tWTR_0=8 +mm_rowAddr_offset_0=18 +mm_rowAddr_mask_0=65535 +mm_rankAddr_offset_0=16 +mm_rankAddr_mask_0=3 +mm_bankAddr_offset_0=13 +mm_bankAddr_mask_0=7 +mm_llc_wayBits_0=3 +mm_llc_setBits_0=12 +mm_llc_blockBits_0=7 +mm_llc_activeMSHRs_0=8 +slotid=0 +profile-interval=-1 +macaddr0=00:12:6D:00:00:02 +blkdev0=bao0-dummy.rootfs +niclog0=niclog0 +blkdev-log0=blkdev-log0 +trace-select=1 +trace-start=0 +trace-end=-1 +trace-output-format=0 +dwarf-file-name=bao0-fw_payload.elf-dwarf +autocounter-readrate=0 +autocounter-filename=AUTOCOUNTERFILE +drj_dtb=bao0-fw_payload.elf.dtb +drj_bin=bao0-fw_payload.elf +drj_rom=bao0-fw_payload.elf.rom +print-start=0 +print-end=-1 +linklatency0=6405 +netbw0=200 +shmemportname0=default +permissive-off bao0-fw_payload.elf
TraceRV 0: Tracing disabled, since +tracefile was not provided.
TraceRV 1: Tracing disabled, since +tracefile was not provided.
TraceRV 2: Tracing disabled, since +tracefile was not provided.
TraceRV 3: Tracing disabled, since +tracefile was not provided.
random min: 0x0, random max: 0xffffffffffffffff
TracerV: Trigger enabled from 0 to 18446744073709551615 cycles
TracerV: Trigger enabled from 0 to 18446744073709551615 cycles
TracerV: Trigger enabled from 0 to 18446744073709551615 cycles
TracerV: Trigger enabled from 0 to 18446744073709551615 cycles
Commencing simulation.
OpenSBI v0.9
____ _____ ____ _____
/ __ \ / ____| _ \_ _|
| | | |_ __ ___ _ __ | (___ | |_) || |
| | | | '_ \ / _ \ '_ \ \___ \| _ < | |
| |__| | |_) | __/ | | |____) | |_) || |_
\____/| .__/ \___|_| |_|_____/|____/_____|
| |
|_|
Platform Name : rocket-h-firesim
Platform Features : timer,mfdeleg
Platform HART Count : 4
Firmware Base : 0x80000000
Firmware Size : 128 KB
Runtime SBI Version : 0.2
Domain0 Name : root
Domain0 Boot HART : 1
Domain0 HARTs : 0*,1*,2*,3*
Domain0 Region00 : 0x0000000080000000-0x000000008001ffff ()
Domain0 Region01 : 0x0000000000000000-0xffffffffffffffff (R,W,X)
Domain0 Next Address : 0x0000000080200000
Domain0 Next Arg1 : 0x0000000082200000
Domain0 Next Mode : S-mode
Domain0 SysReset : yes
Boot HART ID : 1
Boot HART Domain : root
Boot HART ISA : rv64imafdcsuhx
Boot HART Features : scounteren,mcounteren
Boot HART PMP Count : 16
Boot HART PMP Granularity : 4
Boot HART PMP Address Bits: 33
Boot HART MHPM Count : 0
Boot HART MHPM Count : 0
Boot HART MIDELEG : 0x0000000000000666
Boot HART MEDELEG : 0x0000000000f0b509
[ 0.000000] Linux version 5.11.0-rc5-00265-g854618bbf71b-dirty (atish@jedi-01) (riscv64-unknown-linux-gnu-gcc (GCC) 10.2.0, GNU ld (GNU Binutils) 2.35) #739 SMP Mon Feb 1 12:50:36 PST 2021
[ 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 0x0000000080200000-0x00000000901fffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000080200000-0x00000000901fffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x00000000901fffff]
[ 0.000000] SBI specification v0.2 detected
[ 0.000000] SBI implementation ID=0x1 Version=0x9
[ 0.000000] SBI v0.2 TIME extension detected
[ 0.000000] SBI v0.2 IPI extension detected
[ 0.000000] SBI v0.2 RFENCE extension detected
[ 0.000000] software IO TLB: mapped [mem 0x000000008be6c000-0x000000008fe6c000] (64MB)
[ 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 s32344 r8192 d29096 u69632
[ 0.000000] /cpus/cpu-map/cluster0/core0: Can't get CPU for leaf core
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 64640
[ 0.000000] Kernel command line: earlycon=sbi root=/dev/ram console=ttySIF0,3686400n8
[ 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] Sorting __ex_table...
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 164624K/262144K available (7184K kernel code, 883K rwdata, 2250K rodata, 16630K init, 311K bss, 97520K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
[ 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=4
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] riscv-intc: 64 local interrupts mapped
[ 0.000000] plic: interrupt-controller@c000000: mapped 60 interrupts with 4 handlers for 8 contexts.
[ 0.000000] random: get_random_bytes called from start_kernel+0x2f8/0x456 with crng_init=0
[ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [1]
[ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns
[ 0.000000] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns
[ 0.000296] Console: colour dummy device 80x25
[ 0.000415] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=4000)
[ 0.000722] pid_max: default: 32768 minimum: 301
[ 0.000911] Mount-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[ 0.001099] Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[ 0.001869] rcu: Hierarchical SRCU implementation.
[ 0.001954] EFI services will not be available.
[ 0.002101] smp: Bringing up secondary CPUs ...
[ 0.002751] smp: Brought up 1 node, 4 CPUs
[ 0.002930] devtmpfs: initialized
[ 0.003319] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.003353] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.003538] NET: Registered protocol family 16
[ 0.007045] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.007616] vgaarb: loaded
[ 0.007720] SCSI subsystem initialized
[ 0.007847] usbcore: registered new interface driver usbfs
[ 0.007878] usbcore: registered new interface driver hub
[ 0.007905] usbcore: registered new device driver usb
[ 0.008151] clocksource: Switched to clocksource riscv_clocksource
[ 0.010603] NET: Registered protocol family 2
[ 0.010795] tcp_listen_portaddr_hash hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.010828] TCP established hash table entries: 2048 (order: 2, 16384 bytes, linear)
[ 0.010865] TCP bind hash table entries: 2048 (order: 3, 32768 bytes, linear)
[ 0.010910] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.011091] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.011261] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.011525] NET: Registered protocol family 1
[ 0.011817] RPC: Registered named UNIX socket transport module.
[ 0.011837] RPC: Registered udp transport module.
[ 0.011949] RPC: Registered tcp transport module.
[ 0.012098] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.012314] PCI: CLS 0 bytes, default 64
[ 0.036706] kvm [1]: hypervisor extension available
[ 0.036724] kvm [1]: using Sv39x4 G-stage page table format
[ 0.036742] kvm [1]: VMID 0 bits available
[ 0.037009] workingset: timestamp_bits=62 max_order=16 bucket_order=0
[ 0.039447] NFS: Registering the id_resolver key type
[ 0.039470] Key type id_resolver registered
[ 0.039484] Key type id_legacy registered
[ 0.039527] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.039586] 9p: Installing v9fs 9p2000 file system support
[ 0.039698] NET: Registered protocol family 38
[ 0.039725] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 0.039939] io scheduler mq-deadline registered
[ 0.040083] io scheduler kyber registered
[ 0.055681] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
ttySIF0 at MMIO 0x54000000 (irq = 1, base_baud = 115200) is a SiFive UART v0
[ 0.056023] printk: console [ttySIF0] enabled
[ 0.056023] printk: console [ttySIF0] enabled
[ 0.056038] printk: bootconsole [sbi0] disabled
[ 0.056038] printk: bootconsole [sbi0] disabled
[ 0.056390] [drm] radeon kernel modesetting enabled.
[ 0.059438] loop: module loaded
[ 0.059679] libphy: Fixed MDIO Bus: probed
[ 0.059928] e1000e: Intel(R) PRO/1000 Network Driver
[ 0.059936] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 0.059974] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.059986] ehci-pci: EHCI PCI platform driver
[ 0.060007] ehci-platform: EHCI generic platform driver
[ 0.060108] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.060318] ohci-pci: OHCI PCI platform driver
[ 0.060472] ohci-platform: OHCI generic platform driver
[ 0.060745] usbcore: registered new interface driver uas
[ 0.060839] usbcore: registered new interface driver usb-storage
[ 0.061072] mousedev: PS/2 mouse device common for all mice
[ 0.061395] usbcore: registered new interface driver usbhid
[ 0.061411] usbhid: USB HID core driver
[ 0.061785] NET: Registered protocol family 10
[ 0.062028] Segment Routing with IPv6
[ 0.062057] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 0.062242] NET: Registered protocol family 17
[ 0.062310] 9pnet: Installing 9P2000 support
[ 0.062337] Key type dns_resolver registered
[ 0.070317] Freeing unused kernel memory: 16624K
[ 0.070328] Kernel memory protection not selected by kernel config.
[ 0.070342] Run /init as init process
_ _
| ||_|
| | _ ____ _ _ _ _
| || | _ \| | | |\ \/ /
| || | | | | |_| |/ \
|_||_|_| |_|\____|\_/\_/
Busybox Rootfs
Please press Enter to activate this console.
# cat /proc/cpuinfo
processor : 0
hart : 1
isa : rv64imafdcsuh
mmu : sv39
processor : 1
hart : 0
isa : rv64imafdcsuh
mmu : sv39
processor : 2
hart : 2
isa : rv64imafdcsuh
mmu : sv39
processor : 3
hart : 3
isa : rv64imafdcsuh
mmu : sv39
/ # mkdir /dev/hugepages
/ # echo 128 > /proc/sys/vm/nr_hugepages
/ # mount -t hugetlbfs hugetlbfs /dev/hugepages
/ # insmod apps/kvm.ko
./apps/lkvm-static run -m 128 -c2 --console serial -p "console=ttyS0 earlycon=uart8250,mmio,0x3f8" -k ./apps/Image --debug --hugetlbfs /dev/hugepages
# lkvm run -k ./apps/Image -m 128 -c 2 --name guest-70
[ 2.131381] random: fast init done
Info: (riscv/kvm.c) kvm__arch_load_kernel_image:115: Loaded kernel to 0x80200000 (10860032 bytes)
Info: (riscv/kvm.c) kvm__arch_load_kernel_image:126: Placing fdt at 0x81400000 - 0x87ffffff
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 5.11.0-rc5-00265-g854618bbf71b-dirty (atish@jedi-01) (riscv64-unknown-linux-gnu-gcc (GCC) 10.2.0, GNU ld (GNU Binutils) 2.35) #738 SMP Mon Feb 1 12:49:39 PST 2021
[ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
[ 0.000000] earlycon: uart8250 at MMIO 0x00000000000003f8 (options '')
[ 0.000000] printk: bootconsole [uart8250] enabled
[ 0.000000] efi: UEFI not found.
[ 0.000000] Zone ranges:
[ 0.000000] DMA32 [mem 0x0000000080200000-0x0000000087ffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000080200000-0x0000000087ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x0000000087ffffff]
[ 0.000000] SBI specification v0.1 detected
[ 0.000000] software IO TLB: mapped [mem 0x0000000083e3b000-0x0000000087e3b000] (64MB)
[ 0.000000] riscv: ISA extensions acdfimsu
[ 0.000000] riscv: ELF capabilities acdfim
[ 0.000000] percpu: Embedded 17 pages/cpu s32344 r8192 d29096 u69632
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 31815
[ 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=uart8250,mmio,0x3f8
[ 0.000000] Dentry cache hash table entries: 16384 (order: 5, 131072 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 0.000000] Sorting __ex_table...
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 50036K/129024K available (7184K kernel code, 883K rwdata, 2250K rodata, 278K init, 311K bss, 78988K 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] 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 1024 interrupts with 2 handlers for 4 contexts.
[ 0.000000] random: get_random_bytes called from start_kernel+0x2f8/0x456 with crng_init=0
[ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [1]
[ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns
[ 0.000000] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns
[ 0.000978] Console: colour dummy device 80x25
[ 0.001514] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=4000)
[ 0.002663] pid_max: default: 32768 minimum: 301
[ 0.003225] Mount-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[ 0.004050] Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes, linear)
[ 0.005456] rcu: Hierarchical SRCU implementation.
[ 0.006074] EFI services will not be available.
[ 0.006689] smp: Bringing up secondary CPUs ...
[ 0.007452] smp: Brought up 1 node, 2 CPUs
[ 0.008092] devtmpfs: initialized
[ 0.008875] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.010005] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
[ 0.010920] NET: Registered protocol family 16
[ 0.015664] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.017024] vgaarb: loaded
[ 0.017437] SCSI subsystem initialized
[ 0.017998] usbcore: registered new interface driver usbfs
[ 0.018659] usbcore: registered new interface driver hub
[ 0.019273] usbcore: registered new device driver usb
[ 0.020100] clocksource: Switched to clocksource riscv_clocksource
[ 0.023448] NET: Registered protocol family 2
[ 0.024142] tcp_listen_portaddr_hash hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.025107] TCP established hash table entries: 1024 (order: 1, 8192 bytes, linear)
[ 0.025992] TCP bind hash table entries: 1024 (order: 2, 16384 bytes, linear)
[ 0.026811] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.027570] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.028333] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.029177] NET: Registered protocol family 1
[ 0.030742] RPC: Registered named UNIX socket transport module.
[ 0.031420] RPC: Registered udp transport module.
[ 0.031951] RPC: Registered tcp transport module.
[ 0.032504] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.033242] PCI: CLS 0 bytes, default 64
[ 0.033809] kvm [1]: hypervisor extension not available
[ 0.034568] workingset: timestamp_bits=62 max_order=14 bucket_order=0
[ 0.037825] NFS: Registering the id_resolver key type
[ 0.038409] Key type id_resolver registered
[ 0.038885] Key type id_legacy registered
[ 0.039373] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.040200] 9p: Installing v9fs 9p2000 file system support
[ 0.040920] NET: Registered protocol family 38
[ 0.041447] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 0.042284] io scheduler mq-deadline registered
[ 0.042800] io scheduler kyber registered
[ 0.043441] pci-host-generic 30000000.pci: host bridge /smb/pci ranges:
[ 0.044222] pci-host-generic 30000000.pci: IO 0x0000000000..0x000000ffff -> 0x0000000000
[ 0.045212] pci-host-generic 30000000.pci: MEM 0x0040000000..0x007fffffff -> 0x0040000000
[ 0.046202] pci-host-generic 30000000.pci: ECAM at [mem 0x30000000-0x3fffffff] for [bus 00-01]
[ 0.047210] pci-host-generic 30000000.pci: PCI host bridge to bus 0000:00
[ 0.047978] pci_bus 0000:00: root bus resource [bus 00-01]
[ 0.048617] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
[ 0.049326] pci_bus 0000:00: root bus resource [mem 0x40000000-0x7fffffff]
[ 0.069400] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[ 0.070597] printk: console [ttyS0] disabled
[ 0.0[ 3.010215] random: crng init done
71101] 3f8.U6_16550A: ttyS0 at MMIO 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 0.071997] printk: console [ttyS0] enabled
[ 0.071997] printk: console [ttyS0] enabled
[ 0.072959] printk: bootconsole [uart8250] disabled
[ 0.072959] printk: bootconsole [uart8250] disabled
[ 0.074280] 2f8.U6_16550A: ttyS1 at MMIO 0x2f8 (irq = 6, base_baud = 115200) is a 16550A
[ 0.075391] 3e8.U6_16550A: ttyS2 at MMIO 0x3e8 (irq = 7, base_baud = 115200) is a 16550A
[ 0.076525] 2e8.U6_16550A: ttyS3 at MMIO 0x2e8 (irq = 8, base_baud = 115200) is a 16550A
[ 0.077647] [drm] radeon kernel modesetting enabled.
[ 0.081092] loop: module loaded
[ 0.081729] libphy: Fixed MDIO Bus: probed
[ 0.084816] e1000e: Intel(R) PRO/1000 Network Driver
[ 0.085403] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 0.086109] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.086853] ehci-pci: EHCI PCI platform driver
[ 0.087376] ehci-platform: EHCI generic platform driver
[ 0.087993] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.088720] ohci-pci: OHCI PCI platform driver
[ 0.089253] ohci-platform: OHCI generic platform driver
[ 0.089993] usbcore: registered new interface driver uas
[ 0.090617] usbcore: registered new interface driver usb-storage
[ 0.091362] mousedev: PS/2 mouse device common for all mice
[ 0.092232] usbcore: registered new interface driver usbhid
[ 0.092871] usbhid: USB HID core driver
[ 0.093589] NET: Registered protocol family 10
[ 0.094394] Segment Routing with IPv6
[ 0.094839] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 0.095678] NET: Registered protocol family 17
[ 0.096265] 9pnet: Installing 9P2000 support
[ 0.097065] Key type dns_resolver registered
[ 0.116117] Sending DHCP requests ., OK
[ 0.132570] IP-Config: Got DHCP answer from 192.168.33.1, my address is 192.168.33.15
[ 0.133468] IP-Config: Complete:
[ 0.133839] device=eth0, hwaddr=02:15:15:15:15:15, ipaddr=192.168.33.15, mask=255.255.255.0, gw=192.168.33.1
[ 0.134995] host=192.168.33.15, domain=, nis-domain=(none)
[ 0.135669] bootserver=192.168.33.1, rootserver=0.0.0.0, rootpath=
[ 0.135675] nameserver0=192.168.33.1
[ 0.137526] VFS: Mounted root (9p filesystem) on device 0:15.
[ 0.138391] devtmpfs: mounted
[ 0.138867] Freeing unused kernel memory: 272K
[ 0.139381] Kernel memory protection not selected by kernel config.
[ 0.140117] Run /virt/init as init process
Mounting...
/# cat /proc/cpuinfo
processor : 0
hart : 0
isa : rv64imafdcsu
mmu : sv48
processor : 1
hart : 1
isa : rv64imafdcsu
mmu : sv48