Hi, Zhao, I have reproduced the problem, and I hope I can fix it in a few days, of course you can also try to do that. :) Huacai On Sat, Jun 17, 2023 at 9:52 AM Yu Zhao <yuzhao@xxxxxxxxxx> wrote: > > On Fri, Jun 16, 2023 at 10:23:22AM +0200, Thomas Bogendoerfer wrote: > > On Fri, Jun 16, 2023 at 01:18:31AM -0600, Yu Zhao wrote: > > > On Tue, Jul 28, 2020 at 23:58:20PM -0700, Huacai Chen wrote: > > > > James Hogan has become inactive for a long time and leaves KVM for MIPS > > > > orphan. I'm working on KVM/Loongson and attempt to make it upstream both > > > > in kernel and QEMU, while Aleksandar Markovic is already a maintainer of > > > > QEMU/MIPS. We are both interested in QEMU/KVM/MIPS, and we have already > > > > made some contributions in kernel and QEMU. If possible, we want to take > > > > the KVM/MIPS maintainership. > > > > > > > > Reviewed-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> > > > > Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@xxxxxxxxx> > > > > Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx> > > > > --- > > > > MAINTAINERS | 4 +++- > > > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > > > > > diff --git a/MAINTAINERS b/MAINTAINERS > > > > index bddc79a..5f9c2fd 100644 > > > > --- a/MAINTAINERS > > > > +++ b/MAINTAINERS > > > > @@ -9441,9 +9441,11 @@ F: arch/arm64/kvm/ > > > > F: include/kvm/arm_* > > > > > > > > KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips) > > > > +M: Huacai Chen <chenhc@xxxxxxxxxx> > > > > +M: Aleksandar Markovic <aleksandar.qemu.devel@xxxxxxxxx> > > > > L: linux-mips@xxxxxxxxxxxxxxx > > > > L: kvm@xxxxxxxxxxxxxxx > > > > -S: Orphan > > > > +S: Maintained > > > > F: arch/mips/include/asm/kvm* > > > > F: arch/mips/include/uapi/asm/kvm* > > > > F: arch/mips/kvm/ > > > > > > Hi, > > > > > > Is kvm/mips still maintained? Thanks. > > > > > > I tried v6.4-rc6 and hit the following crash. It seems it has been broken since > > > > > > commit 45c7e8af4a5e3f0bea4ac209eea34118dd57ac64 > > > Author: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> > > > Date: Mon Mar 1 16:29:57 2021 +0100 > > > > > > MIPS: Remove KVM_TE support > > > > ok, I see what I missed when removing TE support, d'oh. Does the patch > > below fix the issue for you ? > > Thanks! > > It made some progress but somehow crashed the guest kernel. > > $ qemu-system-mips64el --version > QEMU emulator version 7.2.2 (Debian 1:7.2+dfsg-7) > Copyright (c) 2003-2022 Fabrice Bellard and the QEMU Project developers > > # w/o KVM > > # malta: working (but slow) > > $ qemu-system-mips64el -nographic -kernel lede-malta-le64-vmlinux-initramfs.elf > [ 0.000000] Linux version 4.9.58 (buildbot@builds) (gcc version 5.5.0 (LEDE GCC 5.5.0 r5218-f90f94d) ) #0 SMP Wed Nov 1 21:08:14 2017 > ... > > # loongson3-virt: hanged > > $ qemu-system-mips64el -M loongson3-virt -m 512m -nographic -kernel vmlinuz-6.1.0-9-loongson-3 -initrd initrd.gz > [ 0.000000] Linux version 6.1.0-9-loongson-3 (debian-kernel@xxxxxxxxxxxxxxxx) (gcc-12 (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT Debian 6.1.27-1 (2023-05-08) > ... > [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000009fffffff] > > # w/ KVM > > # malta: qemu error > > $ sudo qemu-system-mips64el -M accel=kvm -nographic -kernel lede-malta-le64-vmlinux-initramfs.elf > qemu-system-mips64el: KVM guest kernels must be linked in useg. Did you forget to enable CONFIG_KVM_GUEST? > > # loongson3-virt: qemu error > > $ sudo qemu-system-mips64el -M loongson3-virt,accel=kvm -m 512m -nographic -kernel vmlinuz-6.1.0-9-loongson-3 -initrd initrd.gz > qemu-system-mips64el: ../../accel/kvm/kvm-all.c:2310: kvm_init: Assertion `TARGET_PAGE_SIZE <= qemu_real_host_page_size()' failed. > Aborted > > $ qemu-system-mips64el --version > QEMU emulator version 8.0.2 (Debian 1:8.0.2+dfsg-1) > Copyright (c) 2003-2022 Fabrice Bellard and the QEMU Project developers > > # w/o KVM > > # malta: no change > # loongson3-virt: no change > > # w/ KVM > > # loongson3-virt: the same qemu error > > # malta: booted very fast but guest crashed: > > $ sudo qemu-system-mips64el -M accel=kvm -nographic -kernel lede-malta-le64-vmlinux-initramfs.elf > [ 0.000000] Linux version 4.9.58 (buildbot@builds) (gcc version 5.5.0 (LEDE GCC 5.5.0 r5218-f90f94d) ) #0 SMP Wed Nov 1 21:08:14 2017 > [ 0.000000] earlycon: uart8250 at I/O port 0x3f8 (options '38400n8') > [ 0.000000] bootconsole [uart8250] enabled > [ 0.000000] Config serial console: console=ttyS0,38400n8r > [ 0.000000] CPU0 revision is: 000d9602 (Cavium Octeon III) > [ 0.000000] FPU revision is: 00739600 > [ 0.000000] Checking for the multiply/shift bug... [ 0.000000] no. > [ 0.000000] Checking for the daddiu bug... [ 0.000000] no. > [ 0.000000] MIPS: machine is mti,malta > [ 0.000000] Software DMA cache coherency enabled > [ 0.000000] Determined physical RAM map: > [ 0.000000] memory: 0000000008000000 @ 0000000000000000 (usable) > [ 0.000000] Initrd not found or empty - disabling initrd > [ 0.000000] Primary instruction cache 16kB, VIVT, 8-way, linesize 128 bytes. > [ 0.000000] Primary data cache 8kB, 8-way, VIPT, no aliases, linesize 128 bytes > [ 0.000000] Zone ranges: > [ 0.000000] DMA [mem 0x0000000000000000-0x0000000000ffffff] > [ 0.000000] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] > [ 0.000000] Normal empty > [ 0.000000] Movable zone start for each node > [ 0.000000] Early memory node ranges > [ 0.000000] node 0: [mem 0x0000000000000000-0x0000000007ffffff] > [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000007ffffff] > [ 0.000000] percpu: Embedded 18 pages/cpu @80000000011c5000 s33120 r8192 d32416 u73728 > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32320 > [ 0.000000] Kernel command line: console=ttyS0,38400n8r > [ 0.000000] PID hash table entries: 512 (order: 0, 4096 bytes) > [ 0.000000] Dentry cache hash table entries: 16384 (order: 5, 131072 bytes) > [ 0.000000] Inode-cache hash table entries: 8192 (order: 4, 65536 bytes) > [ 0.000000] Memory: 114464K/131072K available (4299K kernel code, 322K rwdata, 1168K rodata, 7368K init, 295K bss, 16608K reserved, 0K cma-reserved) > [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > [ 0.000000] Hierarchical RCU implementation. > [ 0.000000] CONFIG_RCU_FANOUT set to non-default value of 32 > [ 0.000000] RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1. > [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 > [ 0.000000] NR_IRQS:256 > [ 0.000000] CPU frequency 1999.99 MHz > [ 0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911270662 ns > [ 0.000007] sched_clock: 32 bits at 999MHz, resolution 1ns, wraps every 2147494911ns > [ 0.003394] Console: colour dummy device 80x25 > [ 0.004942] Calibrating delay loop... 653.72 BogoMIPS (lpj=3268608) > [ 0.276221] pid_max: default: 32768 minimum: 301 > [ 0.277862] Mount-cache hash table entries: 512 (order: 0, 4096 bytes) > [ 0.280038] Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes) > [ 0.284299] Checking for the daddi bug... [ 0.286094] no. > [ 0.289633] Brought up 1 CPUs > [ 0.292878] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns > [ 0.296595] futex hash table entries: 256 (order: 2, 16384 bytes) > [ 0.299743] CPU 0 Unable to handle kernel paging request at virtual address c000000000002002, epc == ffffffff804445d4, ra == ffffffff80444cb8 > [ 0.303942] Oops[#1]: > [ 0.304738] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.58 #0 > [ 0.307060] task: 8000000007c58000 task.stack: 8000000007c54000 > [ 0.309171] $ 0 : 0000000000000000 0000000000000000 0000000000000042 80000000011cf1a8 > [ 0.312027] $ 4 : c000000000002000 0000000000000000 0000000000000000 0000000000000001 > [ 0.314882] $ 8 : 0000000000000006 c000000000002238 0000000e00000030 0000000800000054 > [ 0.317913] $12 : 0000000004000015 ffffffff80326c1c 0000000000000000 0000000e00000028 > [ 0.320774] $16 : c000000000002000 0000000000000210 8000000007c57d90 ffffffff8067b730 > [ 0.323622] $20 : ffffffff80680000 ffffffff806e5298 ffffffff806ae2b0 ffffffff80de0000 > [ 0.326675] $24 : 0000000000000000 ffffffff8016036c > [ 0.329539] $28 : 8000000007c54000 8000000007c57cf0 ffffffff80de0000 ffffffff80444cb8 > [ 0.332388] Hi : 0000000000000000 > [ 0.333656] Lo : 00000000001b4760 > [ 0.335001] epc : ffffffff804445d4 bpf_prepare_filter+0x2c/0x674 > [ 0.337394] ra : ffffffff80444cb8 bpf_prog_create+0x9c/0xdc > [ 0.339461] Status: 140027e3 KX SX UX KERNEL EXL IE > [ 0.341260] Cause : 0080004c (ExcCode 13) > [ 0.342683] PrId : 000d9602 (Cavium Octeon III) > [ 0.344321] Modules linked in: > [ 0.345617] Process swapper/0 (pid: 1, threadinfo=8000000007c54000, task=8000000007c58000, tls=0000000000000000) > [ 0.349216] Stack : ffffffff806ae2b0 c000000000002000 00000000024080c2 0000000000001000 > [ 0.352066] c000000000002000 0000000000000210 8000000007c57d90 ffffffff8067b730 > [ 0.354914] ffffffff80680000 ffffffff806e5298 ffffffff806ae2b0 ffffffff80de0000 > [ 0.357959] ffffffff80de0000 ffffffff80444cb8 ffffffff80680000 0000000000000000 > [ 0.360809] ffffffff806a0000 0000000000000000 ffffffff806d4848 ffffffff806cce20 > [ 0.363664] ffffffff80680042 ffffffff806dfdb0 ffffffff806a0000 ffffffff806cc1b0 > [ 0.366714] ffffffff80680000 ffffffff80680000 ffffffff806cc108 ffffffff80100608 > [ 0.369591] 0000000000000001 0000000000000000 0000000000000000 ffffffff80555660 > [ 0.372440] ffffffff805f6338 ffffffff805f0000 0000000000000061 0000000000000002 > [ 0.375490] ffffffff806d4888 000000000004093a 0000000000000061 0000000000000002 > [ 0.378343] ... > [ 0.379220] Call Trace: > [ 0.380111] [<ffffffff804445d4>] bpf_prepare_filter+0x2c/0x674 > [ 0.382177] [<ffffffff80444cb8>] bpf_prog_create+0x9c/0xdc > [ 0.384160] [<ffffffff806cce20>] ptp_classifier_init+0x2c/0x3c > [ 0.386465] [<ffffffff806cc1b0>] sock_init+0xa8/0xc0 > [ 0.388276] [<ffffffff80100608>] do_one_initcall+0xa8/0x180 > [ 0.390289] [<ffffffff806aede0>] kernel_init_freeable+0x180/0x234 > [ 0.392482] [<ffffffff8052aa38>] kernel_init+0x10/0x10c > [ 0.394372] [<ffffffff801062e8>] ret_from_kernel_thread+0x14/0x1c > [ 0.396780] Code: ffb10028 ffb00020 ffbe0060 <90820002> 00808025 304200fe a0820002 fc800020 64920028 > [ 0.400307] > [ 0.401013] ---[ end trace 7278246801a7bc60 ]--- > [ 0.402570] Kernel panic - not syncing: Fatal exception > [ 0.404311] Rebooting in 1 seconds.. > [ 2.385408] Reboot failed -- System halted > > openwrt/malta: https://downloads.openwrt.org/snapshots/targets/malta/le64/ > debian/loongson-3: https://deb.debian.org/debian/dists/sid/main/installer-mips64el/current/images/ > debian/malta: not working
