powerpc: define arch_is_kernel_initmem_freed() for lockdep
Under certain circumstances, we hit a warning in lockdep_register_key:
if (WARN_ON_ONCE(static_obj(key)))
return;
This occurs when the key falls into initmem that has since been freed
and can now be reused. This h
On 25 November 2019 12:12:01 pm AEDT, Daniel Axtens wrote:
>Hi Michael,
>
Once in a while, booting an IBM POWER9 PowerNV system (8335-GTH)
>would generate
a warning in lockdep_register_key() at,
if (WARN_ON_ONCE(static_obj(key)))
because
key = 0xc0
Hi Michael,
>>> Once in a while, booting an IBM POWER9 PowerNV system (8335-GTH) would
>>> generate
>>> a warning in lockdep_register_key() at,
>>>
>>> if (WARN_ON_ONCE(static_obj(key)))
>>>
>>> because
>>>
>>> key = 0xc19ad118
>>> &_stext = 0xc000
>>> &_end = 0xc49
> On Sep 4, 2019, at 11:55 PM, Michael Ellerman wrote:
>
> Bart Van Assche writes:
>> On 8/30/19 2:13 PM, Qian Cai wrote:
>>> https://raw.githubusercontent.com/cailca/linux-mm/master/powerpc.config
>>>
>>> Once in a while, booting an IBM POWER9 PowerNV system (8335-GTH) would
>>> generate
>
On Thu, 2019-09-05 at 13:55 +1000, Michael Ellerman wrote:
> Bart Van Assche writes:
> > On 8/30/19 2:13 PM, Qian Cai wrote:
> > > https://raw.githubusercontent.com/cailca/linux-mm/master/powerpc.config
> > >
> > > Once in a while, booting an IBM POWER9 PowerNV system (8335-GTH) would
> > > gener
Bart Van Assche writes:
> On 8/30/19 2:13 PM, Qian Cai wrote:
>> https://raw.githubusercontent.com/cailca/linux-mm/master/powerpc.config
>>
>> Once in a while, booting an IBM POWER9 PowerNV system (8335-GTH) would
>> generate
>> a warning in lockdep_register_key() at,
>>
>> if (WARN_ON_ONCE(sta
On 8/30/19 2:13 PM, Qian Cai wrote:
https://raw.githubusercontent.com/cailca/linux-mm/master/powerpc.config
Once in a while, booting an IBM POWER9 PowerNV system (8335-GTH) would generate
a warning in lockdep_register_key() at,
if (WARN_ON_ONCE(static_obj(key)))
because
key = 0xc19ad1
https://raw.githubusercontent.com/cailca/linux-mm/master/powerpc.config
Once in a while, booting an IBM POWER9 PowerNV system (8335-GTH) would generate
a warning in lockdep_register_key() at,
if (WARN_ON_ONCE(static_obj(key)))
because
key = 0xc19ad118
&_stext = 0xc000
&_end
