linux-kernel - Re: [PATCH] x86/apic: Remove logical destination mode for 64-bit

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: <87jzgpubxj.ffs@tglx>
Date: Fri, 09 Aug 2024 14:18:32 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Christian Heusel <christian@...sel.eu>, Rob <rob@...endal.co.uk>
Cc: Borislav Petkov <bp@...en8.de>, regressions@...ts.linux.dev,
 x86@...nel.org, Joerg Roedel <joro@...tes.org>, Tony Luck
 <tony.luck@...el.com>, LKML <linux-kernel@...r.kernel.org>, Paul Menzel
 <pmenzel@...gen.mpg.de>, Lyude Paul <lyude@...hat.com>
Subject: Re: [PATCH] x86/apic: Remove logical destination mode for 64-bit

On Fri, Aug 09 2024 at 11:37, Christian Heusel wrote:
> On 24/07/28 05:51PM, Rob wrote:
>> * Thomas Gleixner (tglx@...utronix.de) wrote:
>> > As the number of CPUs keeps increasing, logical destination mode becomes a
>> > less used code path so there is no real good reason to keep it around.
>> > 
>> > Therefore remove logical destination mode support for 64-bit and default to
>> > physical destination mode.
>> 
>> Thanks Chris for applying the patch for me.
>> 
>> Thomas - The patched kernel boots successfully.  I held off updating the
>> BIOS so there can be no ambiguity.
>> 
>> Thanks,
>> 
>> Rob
>
> As far as I can tell this patch did not get applied anywhere so far,
> right? Or did I miss anything?

I forgot about it. Let me find it again and stick it into the tip tree.

Thanks,

        tglx