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Date:   Thu, 29 Nov 2018 18:01:35 +0000
From:   Will Deacon <will.deacon@arm.com>
To:     Andrey Konovalov <andreyknvl@google.com>
Cc:     Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        Dmitry Vyukov <dvyukov@google.com>,
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        Andrew Morton <akpm@linux-foundation.org>,
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        Nick Desaulniers <ndesaulniers@google.com>,
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Subject: Re: [PATCH v12 23/25] kasan, arm64: select HAVE_ARCH_KASAN_SW_TAGS
Message-ID: <20181129180134.GA4318@arm.com>
References: <cover.1543337629.git.andreyknvl@google.com>
 <996c9b3898bb3c5de977d00215ddc4bf8cf154c1.1543337629.git.andreyknvl@google.com>
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On Tue, Nov 27, 2018 at 05:55:41PM +0100, Andrey Konovalov wrote:
> Now, that all the necessary infrastructure code has been introduced,
> select HAVE_ARCH_KASAN_SW_TAGS for arm64 to enable software tag-based
> KASAN mode.
> 
> Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
> ---
>  arch/arm64/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 787d7850e064..8b331dcfb48e 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -111,6 +111,7 @@ config ARM64
>  	select HAVE_ARCH_JUMP_LABEL
>  	select HAVE_ARCH_JUMP_LABEL_RELATIVE
>  	select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
> +	select HAVE_ARCH_KASAN_SW_TAGS if !(ARM64_16K_PAGES && ARM64_VA_BITS_48)

Can you do if HAVE_ARCH_KASAN instead?

Will