[PATCH] powerpc/mce: check if event info is valid

[Ganesh]

On 8/6/21 6:53 PM, Ganesh Goudar wrote:

> Check if the event info is valid before printing the
> event information. When a fwnmi enabled nested kvm guest
> hits a machine check exception L0 and L2 would generate
> machine check event info, But L1 would not generate any
> machine check event info as it won't go through 0x200
> vector and prints some unwanted message.
>
> To fix this, 'in_use' variable in machine check event info is
> no more in use, rename it to 'valid' and check if the event
> information is valid before logging the event information.
>
> without this patch L1 would print following message for
> exceptions encountered in L2, as event structure will be
> empty in L1.
>
> "Machine Check Exception, Unknown event version 0".
>
> Signed-off-by: Ganesh Goudar <ganeshgr at linux.ibm.com>
> ---

Hi mpe, Any comments on this patch.

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