From: Mark Rutland <mark.rutland@arm.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] arm64/mm: Drop unused restore_ttbr1
Date: Thu, 17 Nov 2022 12:53:24 +0000 [thread overview]
Message-ID: <Y3YuxAHeXS5FXPeG@FVFF77S0Q05N> (raw)
In-Reply-To: <20221117123144.403582-1-anshuman.khandual@arm.com>
On Thu, Nov 17, 2022 at 06:01:44PM +0530, Anshuman Khandual wrote:
> restore_ttbr1 procedure is not used anywhere, hence just drop it.
>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Mark.
> ---
> This applies on v6.1-rc5
>
> arch/arm64/include/asm/assembler.h | 11 -----------
> 1 file changed, 11 deletions(-)
>
> diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h
> index e5957a53be39..f13bc52ab347 100644
> --- a/arch/arm64/include/asm/assembler.h
> +++ b/arch/arm64/include/asm/assembler.h
> @@ -619,17 +619,6 @@ alternative_endif
> #endif
> .endm
>
> -/*
> - * Perform the reverse of offset_ttbr1.
> - * bic is used as it can cover the immediate value and, in future, won't need
> - * to be nop'ed out when dealing with 52-bit kernel VAs.
> - */
> - .macro restore_ttbr1, ttbr
> -#ifdef CONFIG_ARM64_VA_BITS_52
> - bic \ttbr, \ttbr, #TTBR1_BADDR_4852_OFFSET
> -#endif
> - .endm
> -
> /*
> * Arrange a physical address in a TTBR register, taking care of 52-bit
> * addresses.
> --
> 2.25.1
>
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next prev parent reply other threads:[~2022-11-17 12:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-17 12:31 [PATCH] arm64/mm: Drop unused restore_ttbr1 Anshuman Khandual
2022-11-17 12:53 ` Mark Rutland [this message]
2022-11-18 19:40 ` Will Deacon
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