Re: debian bootup hangs on qemu-system-mips64el

[Jun Sun]

Cross-post to the *right* linux-mips list with the *right*
"plain/text" format (sigh)... and hopefully we can have more expert
eyes looking at this ...

Thanks.

Jun


On Wed, Jan 1, 2020 at 6:50 PM Jun Sun <address@hidden> wrote:
>
> Hi, all,
>
> Debian/mips64el runs well on qemu-system-mips64el until I turned on smp 
> option with a number of 2 or higher.  See the error message below.  It 
> usually hangs pretty early on.
>
> I have experimented with different CPU types (e.g., 5KEc) and different 
> memory amount with no avail. Does anybody have an idea?
>
> I attached the kernel config for reference.  It appears SMP kernel configs 
> are enabled properly.
>
> Thanks a lot!
>
> Jun
>
> qemu-system-mips64el -M malta -smp 2 -cpu MIPS64R2-generic -m 1314 -hda 
> hda.qcow2 -kernel vmlinux -initrd initrd.img -append 'root=/dev/sda1 
> console=ttyS0 nokaslr' -nographic -net 
> user,hostfwd=tcp::2222-:22,hostfwd=tcp::8080-:80,hostfwd=tcp::8443-:443 -net 
> nic -serial mon:stdio
> qemu-system-mips64el: warning: SPD cannot represent final 2MB of SDRAM
> [    0.000000] Linux version 4.19.0-6-5kc-malta (address@hidden) (gcc version 
> 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.67-2+deb10u1 (2019-09-20)
> [    0.000000] earlycon: uart8250 at I/O port 0x3f8 (options '38400n8')
> [    0.000000] bootconsole [uart8250] enabled
> [    0.000000] CPU0 revision is: 00010000 (MIPS GENERIC QEMU)
> [    0.000000] FPU revision is: 007f0000
> [    0.000000] Checking for the multiply/shift bug... no.
> [    0.000000] Checking for the daddiu bug... no.
> [    0.000000] MIPS: machine is mti,malta
> [    0.000000] Software DMA cache coherency enabled
> [    0.000000] Determined physical RAM map:
> [    0.000000]  memory: 0000000010000000 @ 0000000000000000 (usable)
> [    0.000000]  memory: 0000000042200000 @ 0000000090000000 (usable)
>
> [HANG FOREVER AT HERE ...]
>