On Mon, Jun 26, 2023 at 2:00 AM Huacai Chen <chenhuacai@xxxxxxxxxx> wrote: > > Hi, Zhao, > > On Sun, Jun 18, 2023 at 10:51 AM Yu Zhao <yuzhao@xxxxxxxxxx> wrote: > > > > On Sat, Jun 17, 2023 at 8:13 PM Huacai Chen <chenhuacai@xxxxxxxxxx> wrote: > > > > > > 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 > > > > ... > > > > > > [ 0.402570] 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 > > > > > > I have reproduced the problem, and I hope I can fix it in a few days, > > > > That's great. Thanks a lot! > I fixed the KVM problems on Loongson [1][2][3]. However, you have > tried [1] but still have problems, while [2] and [3] are specific to > Loongson, so maybe you are still unable to use KVM. > > [1] https://lore.kernel.org/linux-mips/20230626074919.1871944-1-chenhuacai@xxxxxxxxxxx/T/#u > [2] https://lore.kernel.org/linux-mips/20230626075014.1872632-1-chenhuacai@xxxxxxxxxxx/T/#u > [3] https://lore.kernel.org/linux-mips/20230626075047.1872818-1-chenhuacai@xxxxxxxxxxx/T/#u Thanks for the update. I'll take a look if I get a chance.
