Re: [PATCH 1/2] topology: Check for missing CPU devices

Linus Torvalds
2012-01-09T01:29:40Z

On Sun, Jan 8, 2012 at 5:06 PM, richard -rw- weinberger
<richard.weinberger@gmail.com> wrote:
> On Mon, Jan 9, 2012 at 1:18 AM, Linus Torvalds
> <torvalds@linux-foundation.org> 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? 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)?

Linus