Re: [PATCH v4 02/12] x86/vlapic: introduce an EOI callback mechanism

[Jan Beulich <jbeulich@xxxxxxxx>]

On 20.04.2021 16:07, Roger Pau Monne wrote:
> Add a new vlapic_set_irq_callback helper in order to inject a vector
> and set a callback to be executed when the guest performs the end of
> interrupt acknowledgment.
> 
> Such functionality will be used to migrate the current ad hoc handling
> done in vlapic_handle_EOI for the vectors that require some logic to
> be executed when the end of interrupt is performed.
> 
> The setter of the callback will be in charge for setting the callback
> again on guest restore, as callbacks are not saved as part of the
> vlapic state. That is the reason why vlapic_set_callback is not a
> static function.
> 
> No current users are migrated to use this new functionality yet, so no
> functional change expected as a result.
> 
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>