Re: [PATCH] Drivers: hv: vmbus: Move add_interrupt_randomness back to real interrupt

[Sebastian Andrzej Siewior <bigeasy@linutronix.de>]

On 2026-03-17 09:09:27 [+0100], Jan Kiszka wrote:
> From: Jan Kiszka <jan.kiszka@siemens.com>
> 
> Sebastian Siewior wrote:
> "This is feeding entropy and would like to see interrupt registers. But
> since this is invoked from a thread it won't."
> 
> So move it back to where it is always in interrupt context.
> 
> Fixes: f8e6343b7a89 ("Drivers: hv: vmbus: Simplify allocation of vmbus_evt")
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> ---
>  drivers/hv/vmbus_drv.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> index bc4fc1951ae1..28025a264861 100644
> --- a/drivers/hv/vmbus_drv.c
> +++ b/drivers/hv/vmbus_drv.c
> @@ -1361,8 +1361,6 @@ static void __vmbus_isr(void)
>  
>  	vmbus_message_sched(hv_cpu, hv_cpu->hyp_synic_message_page);
>  	vmbus_message_sched(hv_cpu, hv_cpu->para_synic_message_page);
> -
> -	add_interrupt_randomness(vmbus_interrupt);
>  }
>  
>  static DEFINE_PER_CPU(bool, vmbus_irq_pending);
> @@ -1410,6 +1408,8 @@ void vmbus_isr(void)
>  		lockdep_hardirq_threaded();
>  		__vmbus_isr();
>  	}
> +
> +	add_interrupt_randomness(vmbus_interrupt);
>  }
>  EXPORT_SYMBOL_FOR_MODULES(vmbus_isr, "mshv_vtl");

Why not sysvec_hyperv_callback()?

Sebastian