linux-kernel - Re: [PATCH v5 13/21] arm64: Allow ID_AA64MMFR1_EL1.VH to be overridden from the command line

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: <20210125183753.GN25360@gaia>
Date:   Mon, 25 Jan 2021 18:37:54 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        linux-kernel@...r.kernel.org, Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        David Brazdil <dbrazdil@...gle.com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Jing Zhang <jingzhangos@...gle.com>,
        Ajay Patil <pajay@....qualcomm.com>,
        Prasad Sodagudi <psodagud@...eaurora.org>,
        Srinivas Ramana <sramana@...eaurora.org>,
        James Morse <james.morse@....com>,
        Julien Thierry <julien.thierry.kdev@...il.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        kernel-team@...roid.com
Subject: Re: [PATCH v5 13/21] arm64: Allow ID_AA64MMFR1_EL1.VH to be
 overridden from the command line

On Mon, Jan 25, 2021 at 10:50:11AM +0000, Marc Zyngier wrote:
> As we want to be able to disable VHE at runtime, let's match
> "id_aa64mmfr1.vh=" from the command line as an override.
> This doesn't have much effect yet as our boot code doesn't look
> at the cpufeature, but only at the HW registers.
> 
> Signed-off-by: Marc Zyngier <maz@...nel.org>
> Acked-by: David Brazdil <dbrazdil@...gle.com>

Reviewed-by: Catalin Marinas <catalin.marinas@....com>