# Re: \[patch 12/14\] PCI: hv: Use tasklet\_disable\_in\_atomic()

- From: Wei Liu \<wei.liu@kernel.org\>
- Date: 2021-03-10 11:35:29 
- List: linux-hyperv
- Page: https://ratatoskr.run/linux-hyperv/2021/03/6294884
- Thread: https://ratatoskr.run/linux-hyperv/2021/03/6293293/t.md

```text
On Tue, Mar 09, 2021 at 09:42:15AM +0100, Thomas Gleixner wrote:
> From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> 
> The hv_compose_msi_msg() callback in irq_chip::irq_compose_msi_msg is
> invoked via irq_chip_compose_msi_msg(), which itself is always invoked from
> atomic contexts from the guts of the interrupt core code.
> 
> There is no way to change this w/o rewriting the whole driver, so use
> tasklet_disable_in_atomic() which allows to make tasklet_disable()
> sleepable once the remaining atomic users are addressed.
> 
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Signed-off-by: Thomas Gleixner <redacted>

Acked-by: Wei Liu <wei.liu@kernel.org>
```