diff mbox series

riscv: make t-head erratas depend on MMU

Message ID 20220907154932.2858518-1-heiko@sntech.de (mailing list archive)
State New, archived
Headers show
Series riscv: make t-head erratas depend on MMU | expand

Commit Message

Heiko Stuebner Sept. 7, 2022, 3:49 p.m. UTC
Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
Make the T-Head errata implementations of the similar functionality
also depend on it to prevent build errors.

Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
Fixes: d20ec7529236 ("riscv: implement cache-management errata for T-Head SoCs")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
 arch/riscv/Kconfig.erratas | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Guo Ren Sept. 7, 2022, 3:59 p.m. UTC | #1
Reviewed-by: Guo Ren <guoren@kernel.org>

On Wed, Sep 7, 2022 at 11:49 PM Heiko Stuebner <heiko@sntech.de> wrote:
>
> Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
> Make the T-Head errata implementations of the similar functionality
> also depend on it to prevent build errors.
>
> Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
> Fixes: d20ec7529236 ("riscv: implement cache-management errata for T-Head SoCs")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
> ---
>  arch/riscv/Kconfig.erratas | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
> index 6850e9389930..f3623df23b5f 100644
> --- a/arch/riscv/Kconfig.erratas
> +++ b/arch/riscv/Kconfig.erratas
> @@ -46,7 +46,7 @@ config ERRATA_THEAD
>
>  config ERRATA_THEAD_PBMT
>         bool "Apply T-Head memory type errata"
> -       depends on ERRATA_THEAD && 64BIT
> +       depends on ERRATA_THEAD && 64BIT && MMU
>         select RISCV_ALTERNATIVE_EARLY
>         default y
>         help
> @@ -57,7 +57,7 @@ config ERRATA_THEAD_PBMT
>
>  config ERRATA_THEAD_CMO
>         bool "Apply T-Head cache management errata"
> -       depends on ERRATA_THEAD
> +       depends on ERRATA_THEAD && MMU
>         select RISCV_DMA_NONCOHERENT
>         default y
>         help
> --
> 2.35.1
>
Conor Dooley Sept. 7, 2022, 4:35 p.m. UTC | #2
On 07/09/2022 16:49, Heiko Stuebner wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
> Make the T-Head errata implementations of the similar functionality
> also depend on it to prevent build errors.
> 
> Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
> Fixes: d20ec7529236 ("riscv: implement cache-management errata for T-Head SoCs")
> Reported-by: kernel test robot <lkp@intel.com>

In case anyone cares:
Link: https://lore.kernel.org/all/202209070536.lIefsBuR-lkp@intel.com/

> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
> ---
>  arch/riscv/Kconfig.erratas | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
> index 6850e9389930..f3623df23b5f 100644
> --- a/arch/riscv/Kconfig.erratas
> +++ b/arch/riscv/Kconfig.erratas
> @@ -46,7 +46,7 @@ config ERRATA_THEAD
> 
>  config ERRATA_THEAD_PBMT
>         bool "Apply T-Head memory type errata"
> -       depends on ERRATA_THEAD && 64BIT
> +       depends on ERRATA_THEAD && 64BIT && MMU
>         select RISCV_ALTERNATIVE_EARLY
>         default y
>         help
> @@ -57,7 +57,7 @@ config ERRATA_THEAD_PBMT
> 
>  config ERRATA_THEAD_CMO
>         bool "Apply T-Head cache management errata"
> -       depends on ERRATA_THEAD
> +       depends on ERRATA_THEAD && MMU

"Random" thought/question:
These two (and the sifive) errata all use oneliner depends
but the PMU series of yours has:
config ERRATA_THEAD_PMU
	bool "Apply T-Head PMU errata"
	depends on ERRATA_THEAD
	depends on RISCV_PMU_SBI

What's the rationale behind not oneliner-ing that one?

That's obviously orthogonal to this patch though, so:
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

>         select RISCV_DMA_NONCOHERENT
>         default y
>         help
> --
> 2.35.1
> 
> 
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
Heiko Stuebner Sept. 7, 2022, 5:58 p.m. UTC | #3
Am Mittwoch, 7. September 2022, 18:35:50 CEST schrieb Conor.Dooley@microchip.com:
> On 07/09/2022 16:49, Heiko Stuebner wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> > 
> > Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
> > Make the T-Head errata implementations of the similar functionality
> > also depend on it to prevent build errors.
> > 
> > Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
> > Fixes: d20ec7529236 ("riscv: implement cache-management errata for T-Head SoCs")
> > Reported-by: kernel test robot <lkp@intel.com>
> 
> In case anyone cares:
> Link: https://lore.kernel.org/all/202209070536.lIefsBuR-lkp@intel.com/
> 
> > Signed-off-by: Heiko Stuebner <heiko@sntech.de>
> > ---
> >  arch/riscv/Kconfig.erratas | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
> > index 6850e9389930..f3623df23b5f 100644
> > --- a/arch/riscv/Kconfig.erratas
> > +++ b/arch/riscv/Kconfig.erratas
> > @@ -46,7 +46,7 @@ config ERRATA_THEAD
> > 
> >  config ERRATA_THEAD_PBMT
> >         bool "Apply T-Head memory type errata"
> > -       depends on ERRATA_THEAD && 64BIT
> > +       depends on ERRATA_THEAD && 64BIT && MMU
> >         select RISCV_ALTERNATIVE_EARLY
> >         default y
> >         help
> > @@ -57,7 +57,7 @@ config ERRATA_THEAD_PBMT
> > 
> >  config ERRATA_THEAD_CMO
> >         bool "Apply T-Head cache management errata"
> > -       depends on ERRATA_THEAD
> > +       depends on ERRATA_THEAD && MMU
> 
> "Random" thought/question:
> These two (and the sifive) errata all use oneliner depends
> but the PMU series of yours has:
> config ERRATA_THEAD_PMU
> 	bool "Apply T-Head PMU errata"
> 	depends on ERRATA_THEAD
> 	depends on RISCV_PMU_SBI
> 
> What's the rationale behind not oneliner-ing that one?

probably not thinking too much about it beforehand ;-) .

But yes going with one line is probably nicer, so I transplanted this
comment over to the sbi-pmu patch, for when a v4 might be necessary.


Heiko


> That's obviously orthogonal to this patch though, so:
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
> 
> >         select RISCV_DMA_NONCOHERENT
> >         default y
> >         help
> > --
> > 2.35.1
> > 
> > 
> > _______________________________________________
> > linux-riscv mailing list
> > linux-riscv@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-riscv
> 
>
Conor Dooley Sept. 7, 2022, 6:40 p.m. UTC | #4
On 07/09/2022 18:58, Heiko Stübner wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Am Mittwoch, 7. September 2022, 18:35:50 CEST schrieb Conor.Dooley@microchip.com:
>> On 07/09/2022 16:49, Heiko Stuebner wrote:
>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>>>
>>> Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
>>> Make the T-Head errata implementations of the similar functionality
>>> also depend on it to prevent build errors.
>>>
>>> Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
>>> Fixes: d20ec7529236 ("riscv: implement cache-management errata for T-Head SoCs")
>>> Reported-by: kernel test robot <lkp@intel.com>
>>
>> In case anyone cares:
>> Link: https://lore.kernel.org/all/202209070536.lIefsBuR-lkp@intel.com/
>>
>>> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
>>> ---
>>>  arch/riscv/Kconfig.erratas | 4 ++--
>>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
>>> index 6850e9389930..f3623df23b5f 100644
>>> --- a/arch/riscv/Kconfig.erratas
>>> +++ b/arch/riscv/Kconfig.erratas
>>> @@ -46,7 +46,7 @@ config ERRATA_THEAD
>>>
>>>  config ERRATA_THEAD_PBMT
>>>         bool "Apply T-Head memory type errata"
>>> -       depends on ERRATA_THEAD && 64BIT
>>> +       depends on ERRATA_THEAD && 64BIT && MMU
>>>         select RISCV_ALTERNATIVE_EARLY
>>>         default y
>>>         help
>>> @@ -57,7 +57,7 @@ config ERRATA_THEAD_PBMT
>>>
>>>  config ERRATA_THEAD_CMO
>>>         bool "Apply T-Head cache management errata"
>>> -       depends on ERRATA_THEAD
>>> +       depends on ERRATA_THEAD && MMU
>>
>> "Random" thought/question:
>> These two (and the sifive) errata all use oneliner depends
>> but the PMU series of yours has:
>> config ERRATA_THEAD_PMU
>>       bool "Apply T-Head PMU errata"
>>       depends on ERRATA_THEAD
>>       depends on RISCV_PMU_SBI
>>
>> What's the rationale behind not oneliner-ing that one?
> 
> probably not thinking too much about it beforehand ;-) .
> 
> But yes going with one line is probably nicer, so I transplanted this
> comment over to the sbi-pmu patch, for when a v4 might be necessary.

Ehh my OCD just got triggered by it that's all.
I've been kinda wondering in general what's a good policy for depends
lines, seems like one of those things that just varies wildly tbh...

> 
> 
> Heiko
> 
> 
>> That's obviously orthogonal to this patch though, so:
>> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
>>
>>>         select RISCV_DMA_NONCOHERENT
>>>         default y
>>>         help
>>> --
>>> 2.35.1
>>>
>>>
>>> _______________________________________________
>>> linux-riscv mailing list
>>> linux-riscv@lists.infradead.org
>>> http://lists.infradead.org/mailman/listinfo/linux-riscv
>>
>>
> 
> 
> 
>
Heiko Stuebner Sept. 13, 2022, 11:38 a.m. UTC | #5
Hi Palmer,

Am Mittwoch, 7. September 2022, 17:49:32 CEST schrieb Heiko Stuebner:
> Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
> Make the T-Head errata implementations of the similar functionality
> also depend on it to prevent build errors.
> 
> Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
> Fixes: d20ec7529236 ("riscv: implement cache-management errata for T-Head SoCs")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Heiko Stuebner <heiko@sntech.de>

could you take a look at this too please?

As it would make the lkp robot happy :-)


Thanks
Heiko

> ---
>  arch/riscv/Kconfig.erratas | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
> index 6850e9389930..f3623df23b5f 100644
> --- a/arch/riscv/Kconfig.erratas
> +++ b/arch/riscv/Kconfig.erratas
> @@ -46,7 +46,7 @@ config ERRATA_THEAD
>  
>  config ERRATA_THEAD_PBMT
>  	bool "Apply T-Head memory type errata"
> -	depends on ERRATA_THEAD && 64BIT
> +	depends on ERRATA_THEAD && 64BIT && MMU
>  	select RISCV_ALTERNATIVE_EARLY
>  	default y
>  	help
> @@ -57,7 +57,7 @@ config ERRATA_THEAD_PBMT
>  
>  config ERRATA_THEAD_CMO
>  	bool "Apply T-Head cache management errata"
> -	depends on ERRATA_THEAD
> +	depends on ERRATA_THEAD && MMU
>  	select RISCV_DMA_NONCOHERENT
>  	default y
>  	help
>
diff mbox series

Patch

diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
index 6850e9389930..f3623df23b5f 100644
--- a/arch/riscv/Kconfig.erratas
+++ b/arch/riscv/Kconfig.erratas
@@ -46,7 +46,7 @@  config ERRATA_THEAD
 
 config ERRATA_THEAD_PBMT
 	bool "Apply T-Head memory type errata"
-	depends on ERRATA_THEAD && 64BIT
+	depends on ERRATA_THEAD && 64BIT && MMU
 	select RISCV_ALTERNATIVE_EARLY
 	default y
 	help
@@ -57,7 +57,7 @@  config ERRATA_THEAD_PBMT
 
 config ERRATA_THEAD_CMO
 	bool "Apply T-Head cache management errata"
-	depends on ERRATA_THEAD
+	depends on ERRATA_THEAD && MMU
 	select RISCV_DMA_NONCOHERENT
 	default y
 	help