linux-kernel - Re: [PATCH] arm64: remove a redundancy in sysreg.h

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Date:   Tue, 20 Jun 2017 17:01:29 +0100
From:   Marc Zyngier <marc.zyngier@....com>
To:     Will Deacon <will.deacon@....com>
Cc:     Stefan Traby <stefan@...lo-penguin.com>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: remove a redundancy in sysreg.h

On 20/06/17 16:43, Will Deacon wrote:
> On Tue, Jun 20, 2017 at 03:05:39PM +0100, Will Deacon wrote:
>> On Tue, Jun 20, 2017 at 02:54:15PM +0100, Marc Zyngier wrote:
>>> On 20/06/17 14:30, Stefan Traby wrote:
>>>> This is really trivial; there is a dup
>>>> (1 << 16) in the code
>>>>
>>>> Signed-off-by: Stefan Traby <stefan@...lo-penguin.com>
>>>> ---
>>>>  arch/arm64/include/asm/sysreg.h | 4 ++--
>>>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
>>>> index 2d3e155b185f..580965129fea 100644
>>>> --- a/arch/arm64/include/asm/sysreg.h
>>>> +++ b/arch/arm64/include/asm/sysreg.h
>>>> @@ -139,8 +139,8 @@
>>>>  #define SCTLR_ELx_M	1
>>>>  
>>>>  #define SCTLR_EL2_RES1	((1 << 4)  | (1 << 5)  | (1 << 11) | (1 << 16) | \
>>>> -			 (1 << 16) | (1 << 18) | (1 << 22) | (1 << 23) | \
>>>> -			 (1 << 28) | (1 << 29))
>>>> +			 (1 << 18) | (1 << 22) | (1 << 23) | (1 << 28) | \
>>>> +			 (1 << 29))
>>>>  
>>>>  #define SCTLR_ELx_FLAGS	(SCTLR_ELx_M | SCTLR_ELx_A | SCTLR_ELx_C | \
>>>>  			 SCTLR_ELx_SA | SCTLR_ELx_I)
>>>>
>>>
>>> Acked-by: Marc Zyngier <marc.zyngier@....com>
>>>
>>> Catalin, Will: do you want to get that through arm64? Alternatively, I
>>> get stash it in the KVM tree.
>>
>> I can pick it up.
> 
> D'oh, didn't realise that SCTLR_EL2_RES1 was only introduced in -rc5, so I
> can't easily take this via arm64 for-next/core (which is based on -rc3). I
> don't think it justifies sending as a fix, so if you could take it via KVM
> after all, then that would be helpful.
> 
> Acked-by: Will Deacon <will.deacon@....com>
> 
> Sorry for the confusion,

No worries, I'll stash it on our -next branch.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...