Re: cannot poweroff debian/mips64el on qemu

If you are curious how I built debian/mips kernel, please refer to this site, https://sites.google.com/junsun.net/cross-build-debian-mips-kernel/home

I gave up on updating initrd in cross-build environment. I just did an in-target deb package install.

Jun

On Sat, Jan 25, 2020 at 11:34 AM Jun Sun <jsun@junsun.net> wrote:

Wow! That is it! Thank you, Aurlien!

I'm using debian 10.2 and clearly the kernel config option is not there. After adding it back, the guest machine powers off correctly.

Now I only need to figure out how to properly update initrd in a crossbuild environment ...

Cheers.

Jun

On Sat, Jan 25, 2020 at 4:49 AM Aurelien Jarno <aurelien@aurel32.net> wrote:
On 2020-01-24 19:05, Jun Sun wrote:
> Here are more testing results
>
> - qemu 2.5 + debian10.2 + Malta + kernel4.19.0 : hangs on
> poweroff ("reboot: System halted") for both 32bit and 64bit mipsel
> - qemu 2.6 + debian9.11 + Malta + kernel4.9.0 : poweroff successfully
> for both 32bit and 64bit mipsel
>
> Given these results, who is likely to blame? Debian? or kernel?

Probably a bit of both ;-) The poweroff implementation has changed in
kernel 4.19 (commit dd129c6374) and requires that the kernel is built
with CONFIG_POWER_RESET_PIIX4_POWEROFF=y to work.

I have pushed the fix to the Debian kernel repository. However I am not
sure it will be fixed for Debian 10.3, maybe it will only appear in
Debian 10.4.

Aurelien

--
Aurelien Jarno GPG: 4096R/1DDD8C9B
aurelien@aurel32.net http://www.aurel32.net