linux-kernel - Re: [PATCH 2/3] Add multi-node boot support

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: <4EA943B0.4050107@numascale.com>
Date:	Thu, 27 Oct 2011 13:42:40 +0200
From:	Steffen Persvold <sp@...ascale.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Daniel J Blueman <daniel@...ascale-asia.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	x86@...nel.org
Subject: Re: [PATCH 2/3] Add multi-node boot support

On 10/27/2011 13:38, Ingo Molnar wrote:
>
> * Steffen Persvold<sp@...ascale.com>  wrote:
>
>>> If it's absolutely needed then add a proper quirk handler instead
>>> of polluting the generic code.
>>
>> We wanted to reuse as much of the generic AMD code as possible, but
>> it's tricky because most of that code is based around a single HT
>> fabric design, whereas a NumaChip based systems consists of several
>> HT fabrics connected together thus you will have identical
>> NorthBridge IDs (0-7) etc. shared between all systems.
>>
>> How would you suggest we add a quirk handler for it ?
>
> So what we want on NumaChip systems is for the node ID in the BIOS
> SRAT table to override the node ID that is read from the hardware,
> right?

Correct. Our bootloader modifies the SRAT table with the new IDs, and 
initializes all processors with new real APIC IDs but we can't do 
anything with the initial APIC ID.

Cheers,
-- 
Steffen Persvold, Chief Architect NumaChip
Numascale AS - www.numascale.com
Tel: +47 92 49 25 54 Skype: spersvold
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/