linux-kernel - Re: [PATCH v2 2/6] arm64: Add level-hinted TLB invalidation helper

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Date:   Fri, 22 May 2020 16:50:17 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Zhenyu Ye <yezhenyu2@...wei.com>
Cc:     peterz@...radead.org, mark.rutland@....com, will@...nel.org,
        aneesh.kumar@...ux.ibm.com, akpm@...ux-foundation.org,
        npiggin@...il.com, arnd@...db.de, rostedt@...dmis.org,
        maz@...nel.org, suzuki.poulose@....com, tglx@...utronix.de,
        yuzhao@...gle.com, Dave.Martin@....com, steven.price@....com,
        broonie@...nel.org, guohanjun@...wei.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-mm@...ck.org, arm@...nel.org,
        xiexiangyou@...wei.com, prime.zeng@...ilicon.com,
        zhangshaokun@...ilicon.com, kuhn.chenqun@...wei.com
Subject: Re: [PATCH v2 2/6] arm64: Add level-hinted TLB invalidation helper

On Thu, Apr 23, 2020 at 09:56:52PM +0800, Zhenyu Ye wrote:
> diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
> index bc3949064725..5f9f189bc6d2 100644
> --- a/arch/arm64/include/asm/tlbflush.h
> +++ b/arch/arm64/include/asm/tlbflush.h
> @@ -10,6 +10,7 @@
>  
>  #ifndef __ASSEMBLY__
>  
> +#include <linux/bitfield.h>
>  #include <linux/mm_types.h>
>  #include <linux/sched.h>
>  #include <asm/cputype.h>
> @@ -59,6 +60,35 @@
>  		__ta;						\
>  	})
>  
> +#define TLBI_TTL_MASK	GENMASK_ULL(47, 44)
> +
> +#define __tlbi_level(op, addr, level)					\
> +	do {								\

Nitpick: move "do {" on the same line as __tlbi_level() to reduce the
indentation levels of the whole block.

Reviewed-by: Catalin Marinas <catalin.marinas@....com>