KVM: PPC: Book3E: KVM HV host module doesn't work anymore

[Christian Zigotzky <chzigotzky@xenosoft.de>]

On 24/12/24 12:42, Paolo Bonzini wrote:
> On 12/24/24 12:05, Christian Zigotzky wrote:
>> Hello Paolo,
>>
>> Thanks a lot for your patch.
>>
>> I tested it with the RC4 of kernel 6.13 today but unfortunately it 
>> doesn't solve the KVM HV issue. The guest system doesn't boot and I 
>> can't see any error messages. (console=ttyS0)
>
> But do you see anything on the host dmesg (without and with the 
> patch), for example a WARN?
Unfortunately no log during the start of KVM HV.
>
> Also you might try edebc0a1b7ab5ff19b4f5cd011c93196fc34b3e4 + the 
> patch, to see if there are two bugs.
>
> Paolo
>
I think you mean 419cfb983ca93e75e905794521afefcfa07988bb because "git 
checkout edebc0a1b7ab5ff19b4f5cd011c93196fc34b3e4" doesn't work.

Error message: fatal: reference is not a tree: 
edebc0a1b7ab5ff19b4f5cd011c93196fc34b3e4

git checkout 419cfb983ca93e75e905794521afefcfa07988bb

Output:

Updating files: 100% (16656/16656), done.
Note: switching to '419cfb983ca93e75e905794521afefcfa07988bb'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.
...
HEAD is now at 419cfb983ca9 KVM: PPC: e500: Use __kvm_faultin_pfn() to 
handle page faults

---

patch -p0 < kvm_main.patch // Your patch

Output:

patching file a/virt/kvm/kvm_main.c

Oh dear, the host kernel doesn't boot. :-(

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