From: Marc Zyngier <maz@kernel.org>
To: Joey Gouly <joey.gouly@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>, <nd@arm.com>,
<alexandru.elisei@arm.com>, <catalin.marinas@arm.com>,
<corbet@lwn.net>, <james.morse@arm.com>, <reijiw@google.com>,
<suzuki.poulose@arm.com>, <will@kernel.org>
Subject: Re: [PATCH v3 0/3] arm64: Add two HWCAPs for Arm v8.7 FP behaviour
Date: Fri, 10 Dec 2021 17:31:43 +0000 [thread overview]
Message-ID: <87tufgjri8.wl-maz@kernel.org> (raw)
In-Reply-To: <20211210165432.8106-1-joey.gouly@arm.com>
On Fri, 10 Dec 2021 16:54:29 +0000,
Joey Gouly <joey.gouly@arm.com> wrote:
>
> This series adds new HWCAPs for two Arm v8.7 features:
> - FEAT_AFP: Alternate floating-point behavior for specific
> floating point instructions.
> - FEAT_RPRES: Increased precision of Reciprocal Estimate and
> Reciprocal Square Root Estimate from an 8-bit mantissa to a
> 12-bit mantissa.
>
> These features can be enabled by userspace by setting some new bits
> in FPCR. These new bits are FPCR.{NEP, AH, FIZ}. Since these must be
> explicitly enabled by userspace, this should not affect existing
> applications.
For the series:
Acked-by: Marc Zyngier <maz@kernel.org>
M.
--
Without deviation from the norm, progress is not possible.
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next prev parent reply other threads:[~2021-12-10 17:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-10 16:54 [PATCH v3 0/3] arm64: Add two HWCAPs for Arm v8.7 FP behaviour Joey Gouly
2021-12-10 16:54 ` [PATCH v3 1/3] arm64: cpufeature: add HWCAP for FEAT_AFP Joey Gouly
2021-12-10 16:54 ` [PATCH v3 2/3] arm64: add ID_AA64ISAR2_EL1 sys register Joey Gouly
2021-12-10 16:54 ` [PATCH v3 3/3] arm64: cpufeature: add HWCAP for FEAT_RPRES Joey Gouly
2021-12-10 17:31 ` Marc Zyngier [this message]
2021-12-13 19:17 ` [PATCH v3 0/3] arm64: Add two HWCAPs for Arm v8.7 FP behaviour Catalin Marinas
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