From: Catalin Marinas <catalin.marinas@arm.com>
To: Vincenzo Frascino <vincenzo.frascino@arm.com>,
Peter Collingbourne <pcc@google.com>,
Will Deacon <will@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
linux-arm-kernel@lists.infradead.org,
Tejas Belagod <Tejas.Belagod@arm.com>,
Evgenii Stepanov <eugenis@google.com>
Subject: Re: [PATCH v11 0/5] arm64: mte: allow async MTE to be upgraded to sync on a per-CPU basis
Date: Wed, 28 Jul 2021 18:46:15 +0100 [thread overview]
Message-ID: <162749406642.26134.16808284983239195005.b4-ty@arm.com> (raw)
In-Reply-To: <20210727205300.2554659-1-pcc@google.com>
On Tue, 27 Jul 2021 13:52:54 -0700, Peter Collingbourne wrote:
> On some CPUs the performance of MTE in synchronous mode is similar
> to that of asynchronous mode. This makes it worthwhile to enable
> synchronous mode on those CPUs when asynchronous mode is requested,
> in order to gain the error detection benefits of synchronous mode
> without the performance downsides. Therefore, make it possible for
> user programs to opt into upgrading to synchronous mode on those CPUs.
>
> [...]
Applied to arm64 (for-next/mte) but first added Will's acks from v10 an
changed the Documentation/ patch to state "when scheduling" instead of
"when running". Thanks!
[1/5] arm64: mte: rename gcr_user_excl to mte_ctrl
https://git.kernel.org/arm64/c/638982a03fbc
[2/5] arm64: mte: change ASYNC and SYNC TCF settings into bitfields
https://git.kernel.org/arm64/c/433c38f40f6a
[3/5] arm64: move preemption disablement to prctl handlers
https://git.kernel.org/arm64/c/d2e0d8f9746d
[4/5] arm64: mte: introduce a per-CPU tag checking mode preference
https://git.kernel.org/arm64/c/dd061616edcf
[5/5] Documentation: document the preferred tag checking mode feature
https://git.kernel.org/arm64/c/80c7c36fb3dd
--
Catalin
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prev parent reply other threads:[~2021-07-28 17:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 20:52 [PATCH v11 0/5] arm64: mte: allow async MTE to be upgraded to sync on a per-CPU basis Peter Collingbourne
2021-07-27 20:52 ` [PATCH v11 1/5] arm64: mte: rename gcr_user_excl to mte_ctrl Peter Collingbourne
2021-07-27 20:52 ` [PATCH v11 2/5] arm64: mte: change ASYNC and SYNC TCF settings into bitfields Peter Collingbourne
2021-07-27 20:52 ` [PATCH v11 3/5] arm64: move preemption disablement to prctl handlers Peter Collingbourne
2021-07-27 20:52 ` [PATCH v11 4/5] arm64: mte: introduce a per-CPU tag checking mode preference Peter Collingbourne
2021-07-27 20:52 ` [PATCH v11 5/5] Documentation: document the preferred tag checking mode feature Peter Collingbourne
2021-07-28 6:11 ` Greg Kroah-Hartman
2021-07-28 17:38 ` Catalin Marinas
2021-07-28 17:46 ` Catalin Marinas [this message]
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