linux-kernel - Re: [PATCH v21 1/4] arm64/sysreg: Add BRBE registers and fields

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250519140852.GB16991@willie-the-truck>
Date: Mon, 19 May 2025 15:08:54 +0100
From: Will Deacon <will@...nel.org>
To: "Rob Herring (Arm)" <robh@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Jonathan Corbet <corbet@....net>, Marc Zyngier <maz@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Zenghui Yu <yuzenghui@...wei.com>,
	James Clark <james.clark@...aro.org>,
	Anshuman Khandual <anshuman.khandual@....com>,
	Leo Yan <leo.yan@....com>, linux-arm-kernel@...ts.infradead.org,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, kvmarm@...ts.linux.dev,
	Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH v21 1/4] arm64/sysreg: Add BRBE registers and fields

On Mon, Apr 07, 2025 at 12:41:30PM -0500, Rob Herring (Arm) wrote:
> From: Anshuman Khandual <anshuman.khandual@....com>
> 
> This patch adds definitions related to the Branch Record Buffer Extension
> (BRBE) as per ARM DDI 0487K.a. These will be used by KVM and a BRBE driver
> in subsequent patches.
> 
> Some existing BRBE definitions in asm/sysreg.h are replaced with equivalent
> generated definitions.
> 
> Cc: Marc Zyngier <maz@...nel.org>
> Reviewed-by: Mark Brown <broonie@...nel.org>
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
> Signed-off-by: Mark Rutland <mark.rutland@....com>
> Signed-off-by: "Rob Herring (Arm)" <robh@...nel.org>
> Tested-by: James Clark <james.clark@...aro.org>
> ---
> v19:
> - split BRBINF.CC field into mantissa and exponent
> ---
>  arch/arm64/include/asm/sysreg.h |  17 ++----
>  arch/arm64/tools/sysreg         | 132 ++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 138 insertions(+), 11 deletions(-)

Some of the field names here are made up, but overall they seem to
correspond to the architecture, so:

Acked-by: Will Deacon <will@...nel.org>

Will