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From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: Linux ARM <linux-arm-kernel@lists.infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	kasan-dev <kasan-dev@googlegroups.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Alexander Potapenko <glider@google.com>,
	Marco Elver <elver@google.com>,
	Evgenii Stepanov <eugenis@google.com>,
	Branislav Rankov <Branislav.Rankov@arm.com>
Subject: Re: [PATCH 2/4] arm64: mte: Add asynchronous mode support
Date: Fri, 8 Jan 2021 17:26:10 +0000	[thread overview]
Message-ID: <1e1e9d66-32da-6bb8-b4cf-91c03ea90180@arm.com> (raw)
In-Reply-To: <CAAeHK+zjwr0M92zqUjseJmRmhHb=4GjevEft-mahfx5DOkq==w@mail.gmail.com>

Hi Andrey,

On 1/8/21 1:36 PM, Andrey Konovalov wrote:
> Perhaps we could add a generic arch-agnostic enum to
> include/linux/kasan.h and use it in both arm64 and KASAN code?
> 
> enum kasan_hw_tags_mode {
>   KASAN_HW_TAGS_SYNC,
>   KASAN_HW_TAGS_ASYNC
> }
> 
> Assuming other architectures that support memory tagging will end up
> with sync/async mode separation as well, this should work. But even if
> that doesn't happen, this interface can be adjusted later.

I am fine with this solution, I will add it in my v3.
As part of the enumeration I will add READ_SYNC mode as well, so we have all the
possible combinations.

-- 
Regards,
Vincenzo

WARNING: multiple messages have this Message-ID (diff)
From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>,
	Marco Elver <elver@google.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Evgenii Stepanov <eugenis@google.com>,
	Will Deacon <will.deacon@arm.com>,
	LKML <linux-kernel@vger.kernel.org>,
	kasan-dev <kasan-dev@googlegroups.com>,
	Alexander Potapenko <glider@google.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH 2/4] arm64: mte: Add asynchronous mode support
Date: Fri, 8 Jan 2021 17:26:10 +0000	[thread overview]
Message-ID: <1e1e9d66-32da-6bb8-b4cf-91c03ea90180@arm.com> (raw)
In-Reply-To: <CAAeHK+zjwr0M92zqUjseJmRmhHb=4GjevEft-mahfx5DOkq==w@mail.gmail.com>

Hi Andrey,

On 1/8/21 1:36 PM, Andrey Konovalov wrote:
> Perhaps we could add a generic arch-agnostic enum to
> include/linux/kasan.h and use it in both arm64 and KASAN code?
> 
> enum kasan_hw_tags_mode {
>   KASAN_HW_TAGS_SYNC,
>   KASAN_HW_TAGS_ASYNC
> }
> 
> Assuming other architectures that support memory tagging will end up
> with sync/async mode separation as well, this should work. But even if
> that doesn't happen, this interface can be adjusted later.

I am fine with this solution, I will add it in my v3.
As part of the enumeration I will add READ_SYNC mode as well, so we have all the
possible combinations.

-- 
Regards,
Vincenzo

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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2021-01-08 17:23 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-06 11:55 [PATCH 0/4] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino
2021-01-06 11:55 ` Vincenzo Frascino
2021-01-06 11:55 ` [PATCH 1/4] kasan, arm64: Add KASAN light mode Vincenzo Frascino
2021-01-06 11:55   ` Vincenzo Frascino
2021-01-06 11:55 ` [PATCH 2/4] arm64: mte: Add asynchronous mode support Vincenzo Frascino
2021-01-06 11:55   ` Vincenzo Frascino
2021-01-07 16:29   ` Andrey Konovalov
2021-01-07 16:29     ` Andrey Konovalov
2021-01-07 17:29     ` Vincenzo Frascino
2021-01-07 17:29       ` Vincenzo Frascino
2021-01-07 19:18       ` Andrey Konovalov
2021-01-07 19:18         ` Andrey Konovalov
2021-01-08 10:48         ` Vincenzo Frascino
2021-01-08 10:48           ` Vincenzo Frascino
2021-01-08 13:36           ` Andrey Konovalov
2021-01-08 13:36             ` Andrey Konovalov
2021-01-08 17:26             ` Vincenzo Frascino [this message]
2021-01-08 17:26               ` Vincenzo Frascino
2021-01-06 11:55 ` [PATCH 3/4] arm64: mte: Enable async tag check fault Vincenzo Frascino
2021-01-06 11:55   ` Vincenzo Frascino
2021-01-06 15:01   ` kernel test robot
2021-01-06 15:01     ` kernel test robot
2021-01-06 15:01     ` kernel test robot
2021-01-06 11:55 ` [PATCH 4/4] arm64: mte: Optimize mte_assign_mem_tag_range() Vincenzo Frascino
2021-01-06 11:55   ` Vincenzo Frascino
2021-01-06 16:35 ` [PATCH 0/4] arm64: ARMv8.5-A: MTE: Add async mode support Vincenzo Frascino
2021-01-06 16:35   ` Vincenzo Frascino
2021-01-06 16:42   ` Will Deacon
2021-01-06 16:42     ` Will Deacon

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