On Mon, Nov 24, 2014 at 4:25 PM, Olof Johansson <olof@xxxxxxxxx> wrote: > On Mon, Nov 24, 2014 at 11:51 AM, Kevin Hilman <khilman@xxxxxxxxxx> wrote: >> Kukjin, >> >> On Mon, Nov 10, 2014 at 11:35 AM, Kevin Hilman <khilman@xxxxxxxxxx> wrote: >>> Kukjin Kim <kgene@xxxxxxxxxx> writes: >>> >>>> Kevin Hilman wrote: >>>>> >>>>> From: Kevin Hilman <khilman@xxxxxxxxxx> >>>>> >>>>> The option CONFIG_EXYNOS5420_MCPM is causing imprecise external aborts >>>>> during boot testing, causing various userspace startup failures. >>>>> >>>>> Disable until it has gotten more testing. >>>>> >>>>> Cc: Kukjin Kim <kgene.kim@xxxxxxxxxxx>, >>>>> Cc: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>, >>>>> Cc: Sachin Kamat <sachin.kamat@xxxxxxxxxxx>, >>>>> Cc: Doug Anderson <dianders@xxxxxxxxxxxx>, >>>>> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>, >>>>> Cc: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>, >>>>> Cc: Tushar Behera <tushar.behera@xxxxxxxxxx>, >>>>> Cc: stable@xxxxxxxxxxxxxxx # v3.17+ >>>>> Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxx> >>>>> --- >>>>> This has been reported by a few people[1], but not investigated or fixed, so it's >>>>> time to disable this feature until it can be fixed. >>>>> >>>> Hi Kevin, >>>> >>>> Yeah I agree with your opinion. >>>> >>>> But as you can see my tree, I've queued regarding mcpm patches for 3.19 will >>>> be shown in -next in this weekend. >>> >>> Which of the recently queued patches are expected to address the >>> imprecise abort issue? I'd be happy to test them out. >> >> Exynos5 MCPM is still broken in linux-next and still causing an imprecise abort. >> >> What is the status of $SUBJECT patch? >> >>>> Anyway let me apply this into -fixes and >>>> then let's enable after test its functionality in -next in a couple of days. >>> >>> Yes, I think this needs to be applied until these aborts are understood >>> and fixed. >> >> Is anyone at Samsung actually looking into these MCPM issues? > > Hi Kevin, > > What hardware are you having problems with? 5420 or 5422/5800? Yes. :) exynos5420-arndale-octa: http://storage.armcloud.us/kernel-ci/mainline/v3.18-rc6/arm-exynos_defconfig/boot-exynos5420-arndale-octa.html exynos5422-odroid-xu3: http://storage.armcloud.us/kernel-ci/mainline/v3.18-rc6/arm-exynos_defconfig/boot-exynos5422-odroid-xu3.html My boot tests seem to pass fine because I have such a minimal userspace, but Tyler Baker reported that with a "real" userspace, he can't boot to a shell: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-September/286203.html Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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