From: tony@atomide•com (Tony Lindgren)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 1/3] ARM: catch pending imprecise abort on unmask
Date: Thu, 15 Oct 2015 08:39:15 -0700 [thread overview]
Message-ID: <20151015153915.GO10113@atomide.com> (raw)
In-Reply-To: <20151015153246.GH32536@n2100.arm.linux.org.uk>
* Russell King - ARM Linux <linux@arm•linux.org.uk> [151015 08:37]:
> 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@pengutronix•de>
>
> Much better. Please feel free to add it to the patch system, thanks.
>
> I think, given that the original seems to be breaking platforms, this
> patch needs to go into -rc kernels, right?
Hmm do we still see a trace where the issue happened though with this
one?
What I though wes something pending from the bootloader, turned out
to be a bogus SRAM init code that I was able to easily fix with the
trace.
Regards,
Tony
next prev parent reply other threads:[~2015-10-15 15:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-15 10:32 [PATCH v2 0/3] ARM: handle imprecise aborts from firmware in common code Lucas Stach
2015-10-15 10:32 ` [PATCH v2 1/3] ARM: catch pending imprecise abort on unmask Lucas Stach
2015-10-15 15:32 ` Russell King - ARM Linux
2015-10-15 15:39 ` Tony Lindgren [this message]
2015-10-15 16:06 ` Russell King - ARM Linux
2015-10-15 16:23 ` Tony Lindgren
2015-10-16 8:21 ` Lucas Stach
2015-10-19 12:41 ` Lucas Stach
2015-10-15 10:32 ` [PATCH v2 2/3] ARM: OMAP2+: remove custom abort handler for t410 Lucas Stach
2015-11-12 13:32 ` Lucas Stach
2015-11-12 17:51 ` Tony Lindgren
2015-10-15 10:32 ` [PATCH v2 3/3] ARM: BCM5301X: remove workaround imprecise abort fault handler Lucas Stach
2015-11-12 13:37 ` Lucas Stach
2015-11-12 17:54 ` Hauke Mehrtens
2015-11-25 0:01 ` Florian Fainelli
2015-10-16 19:11 ` [PATCH v2 0/3] ARM: handle imprecise aborts from firmware in common code Tyler Baker
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