[PATCH v2 1/3] ARM: catch pending imprecise abort on unmask

Lucas Stach l.stach at pengutronix.de
Fri Oct 16 01:21:44 PDT 2015


Am Donnerstag, den 15.10.2015, 16:32 +0100 schrieb Russell King - ARM
Linux:
> On Thu, Oct 15, 2015 at 12:32:20PM +0200, Lucas Stach wrote:
> > Install a non-faulting handler just before unmasking imprecise aborts
> > and switch back to the regular one after unmasking is done.
> > 
> > This catches any pending imprecise abort that the firmware/bootloader
> > may have left behind that would normally crash the kernel at that point.
> > As there are apparently a lot of bootlaoders out there that do such a
> > thing it makes sense to handle it in the common startup code.
> > 
> > Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
> 
> Much better.  Please feel free to add it to the patch system, thanks.
> 
Do you feel like taking patches 2 and 3 through your tree too, given
that they are already acked by the platform maintainers, or should they
pick them up themselves?

> I think, given that the original seems to be breaking platforms, this
> patch needs to go into -rc kernels, right?
> 
No, the original patch is only queued for 4.4, so the regression is only
in -next. This patch only needs to make it into your 4.4 pull request.

Thanks,
Lucas
-- 
Pengutronix e.K.             | Lucas Stach                 |
Industrial Linux Solutions   | http://www.pengutronix.de/  |




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