RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

[Salil Mehta]

Hi Gavin,

Let me figure out this. Have you also included the below patch along with the
architecture agnostic patch-set accepted in this Qemu cycle?

20240801142322.3948866-3-peter.maydell@linaro.org/">https://lore.kernel.org/all/20240801142322.3948866-3-peter.maydell@linaro.org/


Thanks
Salil.

>  From: Gavin Shan <gshan@redhat.com>
>  Sent: Wednesday, August 7, 2024 10:54 AM
>  To: Salil Mehta <salil.mehta@huawei.com>; qemu-devel@nongnu.org;
>  qemu-arm@nongnu.org; mst@redhat.com
>  
>  Hi Salil,
>  
>  With this series and latest upstream Linux kernel (host), I ran into core
>  dump as below.
>  I'm not sure if it's a known issue or not.
>  
>  # uname -r
>  6.11.0-rc2-gavin+
>  # /home/gavin/sandbox/qemu.main/build/qemu-system-aarch64 -accel
>  kvm \
>     -machine virt,gic-version=host,nvdimm=on -cpu host                 \
>     -smp maxcpus=2,cpus=1,sockets=2,clusters=1,cores=1,threads=1       \
>     -m 4096M,slots=16,maxmem=128G                                      \
>     -object memory-backend-ram,id=mem0,size=2048M                      \
>     -object memory-backend-ram,id=mem1,size=2048M                      \
>     -numa node,nodeid=0,memdev=mem0,cpus=0-0                           \
>     -numa node,nodeid=1,memdev=mem1,cpus=1-1                           \
>       :
>  qemu-system-aarch64: Failed to initialize host vcpu 1 Aborted (core
>  dumped)
>  
>  # gdb /var/lib/systemd/coredump/core.0
>  /home/gavin/sandbox/qemu.main/build/qemu-system-aarch64
>  (gdb) bt
>  #0  0x0000ffff9eec42e8 in __pthread_kill_implementation () at
>  /lib64/libc.so.6
>  #1  0x0000ffff9ee7c73c in raise () at /lib64/libc.so.6
>  #2  0x0000ffff9ee69034 in abort () at /lib64/libc.so.6
>  #3  0x0000aaaac71152c0 in kvm_arm_create_host_vcpu
>  (cpu=0xaaaae4c0cb80)
>       at ../target/arm/kvm.c:1093
>  #4  0x0000aaaac7057520 in machvirt_init (machine=0xaaaae48198c0) at
>  ../hw/arm/virt.c:2534
>  #5  0x0000aaaac6b0d31c in machine_run_board_init
>       (machine=0xaaaae48198c0, mem_path=0x0, errp=0xfffff754ee38) at
>  ../hw/core/machine.c:1576
>  #6  0x0000aaaac6f58d70 in qemu_init_board () at ../system/vl.c:2620
>  #7  0x0000aaaac6f590dc in qmp_x_exit_preconfig (errp=0xaaaac8911120
>  <error_fatal>)
>       at ../system/vl.c:2712
>  #8  0x0000aaaac6f5b728 in qemu_init (argc=82, argv=0xfffff754f1d8) at
>  ../system/vl.c:3758
>  #9  0x0000aaaac6a5315c in main (argc=82, argv=0xfffff754f1d8) at
>  ../system/main.c:47
>  
>  Thanks,
>  Gavin
>