[PATCH 2/2] powerpc/{32,book3e}: kcsan: Extend KCSAN Support

[Michael Ellerman]

Christophe Leroy <christophe.leroy at csgroup.eu> writes:
> Le 17/02/2023 à 00:23, Rohan McLure a écrit :
>>> On 16 Feb 2023, at 6:14 pm, Christophe Leroy <christophe.leroy at csgroup.eu> wrote:
>>> Le 16/02/2023 à 06:09, Rohan McLure a écrit :
>>>> Enable HAVE_ARCH_KCSAN on all powerpc platforms, permitting use of the
>>>> kernel concurrency sanitiser through the CONFIG_KCSAN_* kconfig options.
>>>>
>>>> Boots and passes selftests on 32-bit and 64-bit platforms. See
>>>> documentation in Documentation/dev-tools/kcsan.rst for more information.
>>>>
>>>> Signed-off-by: Rohan McLure <rmclure at linux.ibm.com>
>>>> ---
>>>> New patch
>>>> ---
>>>>   arch/powerpc/Kconfig | 2 +-
>>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
>>>> index 2c9cdf1d8761..45771448d47a 100644
>>>> --- a/arch/powerpc/Kconfig
>>>> +++ b/arch/powerpc/Kconfig
>>>> @@ -197,7 +197,7 @@ config PPC
>>>>    select HAVE_ARCH_KASAN if PPC_RADIX_MMU
>>>>    select HAVE_ARCH_KASAN if PPC_BOOK3E_64
>>>>    select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN
>>>> - select HAVE_ARCH_KCSAN             if PPC_BOOK3S_64
>>>> + select HAVE_ARCH_KCSAN
>>>
>>> So that's a followup of a not yet posted version v5 of the other series ?
>>> Why not just add patch 1 in that series and have KCSAN for all powerpc
>>> at once ?
>> 
>> So the v3 was accepted upstream, likely to appear in 6.3. This patch series is
>> just to extend support to other platforms, once kcsan supports us.
>
> Hum ... Ok.
>
> I checked in checkpatch before writting that mail and saw that v4 was 
> flagged "changes requested", so I didn't notice v3 was accepted.

Sorry that's my fault. I talked to Rohan on chat and decided that taking
v3 was the best way to get something in before the merge window closed.

cheers