Am 09.01.2012 03:52, schrieb Ben Hutchings:
On Sun, 2012-01-08 at 17:29 -0800, Linus Torvalds wrote:On Sun, Jan 8, 2012 at 5:06 PM, richard -rw- weinberger <richard.weinberger@xxxxxxxxx> wrote:On Mon, Jan 9, 2012 at 1:18 AM, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:Ok, both of the patches look sane to me, but it would really be nice to hear from somebody with the actual affected architectures, and get a tested-by.UML is affected: https://lkml.org/lkml/2012/1/8/186 I wasted an hour finding out why it is crashing. Instead of testing kernels I really should read more LKML. ;-)Hmm. Ben - how about that static DEFINE_PER_CPU(struct cpu, cpu_devices); approach that Richard uses in his patch, instead of the kcalloc?That seems perfectly good.And clearly UM should also do that CONFIG_GENERIC_CPU_DEVICES thing with your patch. Richard - does Ben's patch work for you too if you just add "select GENERIC_CPU_DEVICES" in the UM Kconfig too (Kconfig.common, probably)?
Yeah, Ben's patch solves the problem too. :-) Ben, please add the attached patch snippet to your patch. -- diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common index a923483..b37ae70 100644 --- a/arch/um/Kconfig.common +++ b/arch/um/Kconfig.common @@ -8,6 +8,7 @@ config UML default y select HAVE_GENERIC_HARDIRQS select GENERIC_IRQ_SHOW + select GENERIC_CPU_DEVICES config MMU bool
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