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From: Will Deacon <will.deacon@arm.com>
To: Ganesh Mahendran <opensource.ganesh@gmail.com>
Cc: ldufour@linux.vnet.ibm.com, catalin.marinas@arm.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 1/2] arm64/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
Date: Wed, 2 May 2018 13:23:14 +0100	[thread overview]
Message-ID: <20180502122314.GB30246@arm.com> (raw)
In-Reply-To: <1525247602-1565-1-git-send-email-opensource.ganesh@gmail.com>

On Wed, May 02, 2018 at 03:53:21PM +0800, Ganesh Mahendran wrote:
> Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This
> enables Speculative Page Fault handler.

Are there are tests for this? I'm really nervous about enabling it...

Will

> 
> Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
> ---
> This patch is on top of Laurent's v10 spf
> ---
>  arch/arm64/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index eb2cf49..cd583a9 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -144,6 +144,7 @@ config ARM64
>  	select SPARSE_IRQ
>  	select SYSCTL_EXCEPTION_TRACE
>  	select THREAD_INFO_IN_TASK
> +	select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP
>  	help
>  	  ARM 64-bit (AArch64) Linux support.
>  
> -- 
> 1.9.1
> 

  reply	other threads:[~2018-05-02 12:22 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-02  7:53 Ganesh Mahendran
2018-05-02 12:23 ` Will Deacon [this message]
2018-05-04  6:05   ` Ganesh Mahendran
2018-05-02  7:54 Ganesh Mahendran
2018-05-02  9:00 ` Laurent Dufour
2018-05-02 11:05   ` Mark Rutland
2018-05-03  8:48 ` Chintan Pandya

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