On Tue, Mar 09, 2021 at 09:42:15AM +0100, Thomas Gleixner wrote: > From: Sebastian Andrzej Siewior <bige...@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 <bige...@linutronix.de> > Signed-off-by: Thomas Gleixner <t...@linutronix.de> > Cc: "K. Y. Srinivasan" <k...@microsoft.com> > Cc: Haiyang Zhang <haiya...@microsoft.com> > Cc: Stephen Hemminger <sthem...@microsoft.com> > Cc: Wei Liu <wei....@kernel.org> > Cc: Lorenzo Pieralisi <lorenzo.pieral...@arm.com> > Cc: Rob Herring <r...@kernel.org> > Cc: Bjorn Helgaas <bhelg...@google.com> > Cc: linux-hyp...@vger.kernel.org > Cc: linux-...@vger.kernel.org
Acked-by: Bjorn Helgaas <bhelg...@google.com> It'd be ideal if you could merge this as a group. Let me know if you want me to do anything else. > --- > drivers/pci/controller/pci-hyperv.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > --- a/drivers/pci/controller/pci-hyperv.c > +++ b/drivers/pci/controller/pci-hyperv.c > @@ -1458,7 +1458,7 @@ static void hv_compose_msi_msg(struct ir > * Prevents hv_pci_onchannelcallback() from running concurrently > * in the tasklet. > */ > - tasklet_disable(&channel->callback_event); > + tasklet_disable_in_atomic(&channel->callback_event); > > /* > * Since this function is called with IRQ locks held, can't >
