linux-kernel - Re: [RFC/PATCH] arm: do not skip SMP init calls on SMP_ON

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: <56530A88.5010408@dev.rtsoft.ru>
Date:	Mon, 23 Nov 2015 15:46:00 +0300
From:	Nikita Yushchenko <nyushchenko@....rtsoft.ru>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	kuznetsovg@....rtsoft.ru, Ian Campbell <ian.campbell@...rix.com>,
	Mason <slash.tmp@...e.fr>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Will Deacon <will.deacon@....com>,
	Paul Kocialkowski <contact@...lk.fr>,
	linux-kernel@...r.kernel.org, Pavel Machek <pavel@....cz>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC/PATCH] arm: do not skip SMP init calls on SMP_ON_UP case

23.11.2015 15:19, Russell King - ARM Linux пишет:
> On Mon, Nov 23, 2015 at 12:12:16PM +0000, Russell King - ARM Linux wrote:
>> iMX6 is fairly well supported in mainline.  The only reason to use a
>> custom kernel is if you want to use some feature which mainline does
>> not support (or support very well) such as video decode, the full IPU
>> facilities, GPUs or CEC (sorry, I don't have an expansive list.)
>>
>> The GPU problem for the GC320/GC880/GC2000 is fairly close to being
>> solved in a functional (but maybe not yet performant) manner.
> 
> For reference, iMX6S in mainline behaves like this:
> 
> Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=12000)
> pid_max: default: 32768 minimum: 301
> Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
> Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
> Initializing cgroup subsys net_cls
> CPU: Testing write buffer coherency: ok
> CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
> Setting up static identity map for 0x100082c0 - 0x10008318
> Brought up 1 CPUs
> SMP: Total of 1 processors activated (6.00 BogoMIPS).
> CPU: All CPU(s) started in SVC mode.

Indeed, somehow booted mainline and it does not try to initialize CPU 1.

--
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/