Re: [patch] net, 8139too.c: fix netpoll deadlock

* Francois Romieu <[email protected]> wrote:

> > (I'll queue it, if Linus doesn't pick it up; please CC me in the 
> > future)
> 
> I have lived with the "NAPI ->poll() handler runs in BH irq enabled 
> context" rule for years. Is it definitely false/dead ?
> 
> If so at least 8139cp needs the same fix.

hm, this isnt really about NAPI polling, but about the 
netconsole/netpoll/netdump poll_controller() handler.

with netconsole, printk can be called from IRQ context (and is 
frequently from IRQ context during bootup or module initialization), so 
a BH rule isnt enough for them.

	Ingo
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• References:
  • [patch] netpoll: fix netpoll lockups
    • From: Ingo Molnar <[email protected]>
  • [patch] net, 8139too.c: fix netpoll deadlock
    • From: Ingo Molnar <[email protected]>
  • Re: [patch] net, 8139too.c: fix netpoll deadlock
    • From: Jeff Garzik <[email protected]>
  • Re: [patch] net, 8139too.c: fix netpoll deadlock
    • From: Francois Romieu <[email protected]>

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