Re: [PATCH] uio/gen-pci: don't enable interrupts in ISR

[Sebastian Andrzej Siewior]

Michael S. Tsirkin wrote:
> Let's assume we start with e.g. io enable bit cleared.
>
>
>     user                                kernel
>  read config                               |
>  set io enable                             |
>      |                                  interrupt                                                
>      |                              read + set interrupt mask
>  write config back                         |
> 					write
>
>
>
> We end up with io enable bit cleared. Locking around rmw
> that we have fixes this race.

Okay, forgot about the SMP case, sorry.

Sebastian
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