Re: LTS kernel Linux 4.14.290 unable to boot with edk2-ovmf (x86_64 UEFI runtime)

[Qu Wenruo <quwenruo.btrfs@gmx.com>]

On 2022/8/22 14:25, Greg KH wrote:
> On Mon, Aug 22, 2022 at 09:15:59AM +0800, Qu Wenruo wrote:
>> Hi,
>>
>> When backporting some btrfs specific patches to all LTS kernels, I found
>> v4.14.290 kernel unable to boot as a KVM guest with edk2-ovmf
>> (edk2-ovmf: 202205, qemu 7.0.0, libvirt 1:8.6.0).
>>
>> While all other LTS/stable branches (4.19.x, 5.4.x, 5.10.x, 5.15.x,
>> 5.18.x, 5.19.x) can boot without a hipccup.
>>
>> I tried the following configs, but none of them can even provide an
>> early output:
>>
>> - CONFIG_X86_VERBOSE_BOOTUP
>> - CONFIG_EARLY_PRINTK
>> - CONFIG_EARLY_PRINTK_EFI
>>
>> Is this a known bug or something new?
>
> Has this ever worked properly on this very old kernel tree?  If so, can
> you use 'git bisect' to find the offending commit?

Unfortunately the initial v4.14 from upstream can not even be compiled.

I'll try some more recent v4.14.x tags to see if I can get a working
release to do the bisect.

Thanks,
Qu

>
> thanks,
>
> greg k-h