linux-kernel - Ping^2: [PATCH v2] arm64: Add overrride for MPAM

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: <95e820cf9977b8d20d7cd3c64be463285ca57772.camel@xry111.site>
Date: Sun, 11 May 2025 16:26:38 +0800
From: Xi Ruoyao <xry111@...111.site>
To: James Morse <james.morse@....com>, Marc Zyngier <maz@...nel.org>, 
 Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>, Mingcong Bai
 <jeffbai@...c.io>
Subject: Ping^2: [PATCH v2] arm64: Add overrride for MPAM

On Wed, 2025-04-02 at 11:12 +0800, Xi Ruoyao wrote:
> As the message of the commit 09e6b306f3ba ("arm64: cpufeature:
> discover
> CPU support for MPAM") already states, if a buggy firmware fails to
> either enable MPAM or emulate the trap as if it were disabled, the
> kernel will just fail to boot.  While upgrading the firmware should be
> the best solution, we have some hardware of which the vendor have made
> no response 2 months after we requested a firmware update.  Allow
> overriding it so our devices don't become some e-waste.
> 
> Cc: James Morse <james.morse@....com>
> Cc: Marc Zyngier <maz@...nel.org>
> Cc: Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>
> Cc: Mingcong Bai <jeffbai@...c.io>
> Signed-off-by: Xi Ruoyao <xry111@...111.site>
> ---

Ping^2.

-- 
Xi Ruoyao <xry111@...111.site>
School of Aerospace Science and Technology, Xidian University