[PATCH 5/5] powerpc/64s: Document that PPC supports nosmap

[LEROY Christophe]

Russell Currey <ruscur at russell.cc> a écrit :

> On Fri, 2018-10-26 at 18:35 +0200, LEROY Christophe wrote:
>> Why not call our new functionnality SMAP instead of calling it GUAP ?
>
> mpe wasn't a fan of using the same terminology as other architectures.

I don't like too much the word 'guarded' because it means something  
different for powerpc MMUs.

What about something like 'user space access protection' ?

Christophe

> Having a separate term does avoid some assumptions about how things
> work or are implemented, but sharing compatibility with an existing
> parameter is nice.
>
> Personally I don't really care too much about the name.
>
> - Russell
>
>>
>> Christophe
>>
>> Russell Currey <ruscur at russell.cc> a écrit :
>>
>> > Signed-off-by: Russell Currey <ruscur at russell.cc>
>> > ---
>> >  Documentation/admin-guide/kernel-parameters.txt | 2 +-
>> >  1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > diff --git a/Documentation/admin-guide/kernel-parameters.txt
>> > b/Documentation/admin-guide/kernel-parameters.txt
>> > index a5ad67d5cb16..8f78e75965f0 100644
>> > --- a/Documentation/admin-guide/kernel-parameters.txt
>> > +++ b/Documentation/admin-guide/kernel-parameters.txt
>> > @@ -2764,7 +2764,7 @@
>> >  			noexec=on: enable non-executable mappings
>> > (default)
>> >  			noexec=off: disable non-executable mappings
>> >
>> > -	nosmap		[X86]
>> > +	nosmap		[X86,PPC]
>> >  			Disable SMAP (Supervisor Mode Access
>> > Prevention)
>> >  			even if it is supported by processor.
>> >
>> > --
>> > 2.19.1
>>
>>