From: Huacai Chen <chenhuacai@kernel.org>
To: Yu Zhao <yuzhao@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
jiaxun.yang@flygoat.com, kvm@vger.kernel.org,
linux-mips@vger.kernel.org, pbonzini@redhat.com,
robh+dt@kernel.org
Subject: Re: [PATCH 5/5] MAINTAINERS: Update KVM/MIPS maintainers
Date: Sun, 18 Jun 2023 10:13:00 +0800 [thread overview]
Message-ID: <CAAhV-H7Hdw6Ye46OOoNyXtZfO9smMiPz+hRLq8vEvmgQCMGuFQ@mail.gmail.com> (raw)
In-Reply-To: <ZI0R76Fx25Q2EThZ@google.com>
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@google.com> 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@flygoat.com>
> > > > Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
> > > > Signed-off-by: Huacai Chen <chenhc@lemote.com>
> > > > ---
> > > > 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@lemote.com>
> > > > +M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
> > > > L: linux-mips@vger.kernel.org
> > > > L: kvm@vger.kernel.org
> > > > -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@alpha.franken.de>
> > > 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@lists.debian.org) (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
next prev parent reply other threads:[~2023-06-18 2:13 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 6:58 [PATCH 1/5] PCI: Move PCI_VENDOR_ID_REDHAT definition to pci_ids.h Huacai Chen
2020-07-29 6:58 ` [PATCH 2/5] dt-bindings: mips: Document Loongson kvm guest board Huacai Chen
2020-07-29 9:52 ` Thomas Bogendoerfer
2020-07-29 10:08 ` Huacai Chen
2020-07-31 3:01 ` Huacai Chen
2020-07-31 8:32 ` Thomas Bogendoerfer
2020-07-31 11:56 ` Jiaxun Yang
2020-08-03 6:05 ` Huacai Chen
2020-08-03 9:13 ` Jiaxun Yang
2020-08-04 7:47 ` Thomas Bogendoerfer
2020-07-29 6:58 ` [PATCH 3/5] MIPS: KVM: Add kvm guest support for Loongson-3 Huacai Chen
2020-07-29 6:58 ` [PATCH 4/5] MIPS: Update default config file " Huacai Chen
2020-07-29 6:58 ` [PATCH 5/5] MAINTAINERS: Update KVM/MIPS maintainers Huacai Chen
2023-06-16 7:18 ` Yu Zhao
2023-06-16 7:55 ` Huacai Chen
2023-06-16 8:23 ` Thomas Bogendoerfer
2023-06-16 8:31 ` Huacai Chen
2023-06-18 7:55 ` Thomas Bogendoerfer
2023-06-17 1:52 ` Yu Zhao
2023-06-18 2:13 ` Huacai Chen [this message]
2023-06-18 2:51 ` Yu Zhao
2023-06-26 8:00 ` Huacai Chen
2023-06-27 18:58 ` Yu Zhao
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