From: Will Deacon <will@kernel.org>
To: Peter Collingbourne <pcc@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Evgenii Stepanov <eugenis@google.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
Tejas Belagod <Tejas.Belagod@arm.com>,
linux-arm-kernel@lists.infradead.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH v10 2/5] arm64: mte: change ASYNC and SYNC TCF settings into bitfields
Date: Wed, 14 Jul 2021 12:02:10 +0100 [thread overview]
Message-ID: <20210714110210.GB31686@willie-the-truck> (raw)
In-Reply-To: <20210713234801.3858018-3-pcc@google.com>
On Tue, Jul 13, 2021 at 04:47:58PM -0700, Peter Collingbourne wrote:
> Allow the user program to specify both ASYNC and SYNC TCF modes by
> repurposing the existing constants as bitfields. This will allow the
> kernel to select one of the modes on behalf of the user program. With
> this patch the kernel will always select async mode, but a subsequent
> patch will make this configurable.
>
> Link: https://linux-review.googlesource.com/id/Icc5923c85a8ea284588cc399ae74fd19ec291230
> Signed-off-by: Peter Collingbourne <pcc@google.com>
> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
> ---
> v9:
> - make mte_update_sctlr_user static
>
> arch/arm64/include/asm/processor.h | 3 ++
> arch/arm64/kernel/mte.c | 70 ++++++++++++------------------
> include/uapi/linux/prctl.h | 11 ++---
> 3 files changed, 37 insertions(+), 47 deletions(-)
Acked-by: Will Deacon <will@kernel.org>
Will
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next prev parent reply other threads:[~2021-07-14 11:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-13 23:47 [PATCH v10 0/5] arm64: mte: allow async MTE to be upgraded to sync on a per-CPU basis Peter Collingbourne
2021-07-13 23:47 ` [PATCH v10 1/5] arm64: mte: rename gcr_user_excl to mte_ctrl Peter Collingbourne
2021-07-14 11:01 ` Will Deacon
2021-07-13 23:47 ` [PATCH v10 2/5] arm64: mte: change ASYNC and SYNC TCF settings into bitfields Peter Collingbourne
2021-07-14 11:02 ` Will Deacon [this message]
2021-07-13 23:47 ` [PATCH v10 3/5] arm64: move preemption disablement to prctl handlers Peter Collingbourne
2021-07-14 11:43 ` Will Deacon
2021-07-13 23:48 ` [PATCH v10 4/5] arm64: mte: introduce a per-CPU tag checking mode preference Peter Collingbourne
2021-07-14 11:45 ` Will Deacon
2021-07-13 23:48 ` [PATCH v10 5/5] Documentation: document the preferred tag checking mode feature Peter Collingbourne
2021-07-14 11:50 ` Will Deacon
2021-07-27 18:20 ` [PATCH v10 0/5] arm64: mte: allow async MTE to be upgraded to sync on a per-CPU basis Catalin Marinas
2021-07-27 20:54 ` Peter Collingbourne
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