Hi, Zhao, On Fri, Jun 16, 2023 at 3:18 PM Yu Zhao <yuzhao@xxxxxxxxxx> 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 > > After removal of the guest part of KVM TE (trap and emulate), also remove > the host part. > > which deletes kvm_mips_commpage_init() and leaves vcpu->arch.cop0 NULL. I think your analysis is correct, are you interested in fixing it? Huacai > > (Or probably I've missed something.) > > $ sudo qemu-system-mips64el -M accel=kvm -nographic > CPU 2 Unable to handle kernel paging request at virtual address 0000000000000300, epc == ffffffff81148288, ra == ffffffff81148228 > Oops[#1]: > CPU: 2 PID: 339 Comm: qemu-system-mip Not tainted 6.4.0-rc6-00049-g62d8779610bb #3 > $ 0 : 0000000000000000 0000000034109ce1 0000000000400004 ffffffff81b50200 > $ 4 : 8000000001d71c00 0000000000000001 0000000000000000 0000000000000000 > $ 8 : 000000a64082989c 000000000000001f 000000000000000a 0000000000000060 > $12 : ffffffff81935390 eb0ffdb582d1ed00 0000000000000001 0000000000000000 > $16 : 0000000000000000 8000000005193330 8000000005193330 80000000058b6000 > $20 : 80000000058b4a00 ffffffff81b5f110 0000000000000000 ffffffffffffffff > $24 : 0000000000000001 ffffffff811331a0 > $28 : 80000000021e8000 80000000021ebc90 000000fff1369160 ffffffff81148228 > Hi : 0000000000000000 > Lo : 00000000083e6217 > epc : ffffffff81148288 kvm_vz_vcpu_setup+0xa8/0x2d8 > ra : ffffffff81148228 kvm_vz_vcpu_setup+0x48/0x2d8 > Status: 34109ce3 KX SX UX KERNEL EXL IE > Cause : 0080000c (ExcCode 03) > BadVA : 0000000000000300 > PrId : 000d9602 (Cavium Octeon III) > Modules linked in: > Process qemu-system-mip (pid: 339, threadinfo=0000000029889cef, task=0000000070662173, tls=000000fff1371140) > Stack : 8000000005193330 80000000058b4a00 80000000058b4000 ffffffff81142184 > 80000000021ebcd8 eb0ffdb582d1ed00 ffffffff81b50000 ffffffff81b50000 > 800000000537e000 0000000000000000 800000000537e920 8000000005193330 > ffffffff81c10000 ffffffff8113fd94 0000000000000cc0 000000000ffdc000 > 000000ffdc000000 000000ffdc000010 0000000000000255 8000000003416700 > 8000000005923ff8 0000000000000000 0000000000000000 0000000000000000 > 8000000004775000 800000004d91dd68 0000000000000000 eb0ffdb582d1ed00 > 0000000000000801 0000000000000255 ffffffff81b526a8 0000000000000001 > 0000000000000001 ffffffff812c4b84 8000000002238180 0000000000000255 > 0000000000000000 eb0ffdb582d1ed00 000000ffdc000010 8000000003717200 > ... > Call Trace: > [<ffffffff81148288>] kvm_vz_vcpu_setup+0xa8/0x2d8 > [<ffffffff81142184>] kvm_arch_vcpu_create+0x12c/0x1c0 > [<ffffffff8113fd94>] kvm_vm_ioctl+0x5e4/0xda0 > [<ffffffff812ef070>] sys_ioctl+0xb8/0x100 > [<ffffffff81125930>] syscall_common+0x34/0x58 > > Code: 3c040040 24840004 00441025 <fe020300> 40626001 3c04ff80 00441024 3c048000 7c42f803 > > ---[ end trace 0000000000000000 ]---
