linux-kernel - Re: [RFD] pstore: pmsg: ramoops: add multiple pmsg instances

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]

Date:	Fri, 9 Oct 2015 09:15:02 -0700
From:	Mark Salyzyn <salyzyn@...roid.com>
To:	Hiraku Toyooka <hiraku.toyooka.gu@...achi.com>,
	tony.luck@...el.com, keescook@...omium.org, anton@...msg.org,
	ccross@...roid.com, seiji.aguchi.tr@...achi.com,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFD] pstore: pmsg: ramoops: add multiple pmsg instances

On 10/08/2015 06:52 PM, Hiraku Toyooka wrote:
> Hello,
>
> I'm trying to make the feature of multiple pmsg instances for ramoops.
I like it, in fact I encourage it.

This is somewhat/exactly what I did when I first created pmsg, but
decided to simplify to one instance for the first release because I was
unsure how many bona fide user space consumers there would be, so kept
the patch small. I kept the instance number 0 around to allow for
expanding this optional feature without introducing incompatibility. But
I sold the idea that multiple writers on single instance can occur if a
common protocol was used. For my own usage (Android) one instance was
more than enough.

Multiple instances does allow one to control individual content aging or
priority, I agree with your assessment, but make sure that you have a
bona fide user for it (even if it is just for yourself)?

NB: ToDo: device tree support for pstore configuration

Thanks

Sincerely -- Mark Salyzyn
--
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/