Re: [PATCH] fbcon: fix race condition between console lock and cursor timer

2012-08-21 Thread Peter Zijlstra
On Tue, 2012-08-21 at 10:15 +0100, Alan Cox wrote: So after much tracing with direct netconsole writes (printks under console_lock not so useful), I think I found the race. Direct netconsole write would be a useful patch to have mainline I think 8) could we make that use the earlyprintk

Re: [PATCH] fbcon: fix race condition between console lock and cursor timer

2012-08-21 Thread Josh Boyer
On Tue, Aug 21, 2012 at 2:40 AM, Dave Airlie airl...@redhat.com wrote: So we've had a fair few reports of fbcon handover breakage between efi/vesafb and i915 surface recently, so I dedicated a couple of days to finding the problem. Essentially the last thing we saw was the conflicting

Re: [PATCH] fbcon: fix race condition between console lock and cursor timer

2012-08-21 Thread Dave Airlie
On Tue, Aug 21, 2012 at 7:15 PM, Alan Cox a...@lxorguk.ukuu.org.uk wrote: So after much tracing with direct netconsole writes (printks under console_lock not so useful), I think I found the race. Direct netconsole write would be a useful patch to have mainline I think 8) Well I used a one