linux-kernel - Re: [PATCH 12/13] arm64/sysreg: Add definition for FPMR

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]

Date:   Mon, 11 Dec 2023 09:28:15 +0000
From:   Fuad Tabba <tabba@...gle.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Joey Gouly <joey.gouly@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/13] arm64/sysreg: Add definition for FPMR

Hi Mark,

On Sat, Dec 9, 2023 at 1:03 AM Mark Brown <broonie@...nel.org> wrote:
>
> DDI0601 2023-09 defines a new sysrem register FPMR (Floating Point Mode
> Register) which configures the new FP8 features. Add a definition of this
> register.
>
> Signed-off-by: Mark Brown <broonie@...nel.org>
> ---

Reviewed-by: Fuad Tabba <tabba@...gle.com>

Cheers,
/fuad

>  arch/arm64/tools/sysreg | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
>
> diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
> index 1acec8f5c37d..1c6d1c904750 100644
> --- a/arch/arm64/tools/sysreg
> +++ b/arch/arm64/tools/sysreg
> @@ -2139,6 +2139,29 @@ Field    1       ZA
>  Field  0       SM
>  EndSysreg
>
> +Sysreg FPMR    3       3       4       4       2
> +Res0   63:38
> +Field  37:32   LSCALE2
> +Field  31:24   NSCALE
> +Res0   23
> +Field  22:16   LSCALE
> +Field  15      OSC
> +Field  14      OSM
> +Res0   13:9
> +UnsignedEnum   8:6     F8D
> +       0b000   E5M2
> +       0b001   E4M3
> +EndEnum
> +UnsignedEnum   5:3     F8S2
> +       0b000   E5M2
> +       0b001   E4M3
> +EndEnum
> +UnsignedEnum   2:0     F8S1
> +       0b000   E5M2
> +       0b001   E4M3
> +EndEnum
> +EndSysreg
> +
>  SysregFields   HFGxTR_EL2
>  Field  63      nAMAIR2_EL1
>  Field  62      nMAIR2_EL1
>
> --
> 2.39.2
>