[PATCH RESEND] powerpc/configs: enable CONFIG_RAS to fix EDAC support

[PATCH RESEND] powerpc/configs: enable CONFIG_RAS to fix EDAC support

[Michael Walle]

Before commit e3c4ff6d8c94 ("EDAC: Remove EDAC_MM_EDAC") EDAC_MM_EDAC
selected RAS, after that commit, EDAC depends on RAS, but nobody enables
it. Enable it in the config again.

Fixes: e3c4ff6d8c94 ("EDAC: Remove EDAC_MM_EDAC")
Signed-off-by: Michael Walle <mwalle@kernel.org>
---
I've missed the EDAC-CORE maintainers before. I addressed Borislav,
but it (apparently) had a stale mail address and there is no mailmap
entry. Hopefully, the patch will reach the right people now.

 arch/powerpc/configs/85xx-hw.config | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/configs/85xx-hw.config b/arch/powerpc/configs/85xx-hw.config
index 2b19c20a9a2c..6b8471810143 100644
--- a/arch/powerpc/configs/85xx-hw.config
+++ b/arch/powerpc/configs/85xx-hw.config
@@ -90,6 +90,7 @@ CONFIG_PPC_EPAPR_HV_BYTECHAN=y
 CONFIG_QE_GPIO=y
 CONFIG_QUICC_ENGINE=y
 CONFIG_RAPIDIO=y
+CONFIG_RAS=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_CMOS=y
 CONFIG_RTC_DRV_DS1307=y
-- 
2.47.3

Re: [PATCH RESEND] powerpc/configs: enable CONFIG_RAS to fix EDAC support

[Borislav Petkov]

On Thu, Jul 30, 2026 at 12:52:18PM +0200, Michael Walle wrote:
> Before commit e3c4ff6d8c94 ("EDAC: Remove EDAC_MM_EDAC") EDAC_MM_EDAC
> selected RAS, after that commit, EDAC depends on RAS, but nobody enables
> it. Enable it in the config again.

I have no clue what you're trying to do but forcing RAS=y in that config
better have a real good reason why.

Oh and we cannot support CONFIG_EDAC_MPC85XX anymore due to lack of hw:

https://git.kernel.org/pub/scm/linux/kernel/git/ras/ras.git/commit/?h=edac-misc&id=749c5102487b558cc7d73961a6d0da2fceaa022d

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

Re: [PATCH RESEND] powerpc/configs: enable CONFIG_RAS to fix EDAC support

[Michael Walle]

On Thu Jul 30, 2026 at 8:56 PM CEST, Borislav Petkov wrote:
> On Thu, Jul 30, 2026 at 12:52:18PM +0200, Michael Walle wrote:
>> Before commit e3c4ff6d8c94 ("EDAC: Remove EDAC_MM_EDAC") EDAC_MM_EDAC
>> selected RAS, after that commit, EDAC depends on RAS, but nobody enables
>> it. Enable it in the config again.
>
> I have no clue what you're trying to do but forcing RAS=y in that config
> better have a real good reason why.

I don't get what you are trying to say. CONFIG_EDAC_MPC85XX is
enabled in the that config already. It's just that the mentioned
commit broke it because it removed the "select RAS", while
EDAC depends on it. So yeah, up to that commit it was always
enabled in that particular config.

> Oh and we cannot support CONFIG_EDAC_MPC85XX anymore due to lack of hw:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/ras/ras.git/commit/?h=edac-misc&id=749c5102487b558cc7d73961a6d0da2fceaa022d

Still, it's already enabled in that config and it somewhat recently
got IMX9 support, so I guess NXP is interested in keeping it.

That being said, I have the hardware, but right now I don't have
much time personally. The best I could do is "Odd Fixes". (I also
have two pending patches for that edac driver, yet to be posted to
the ML).

-michael