linux-kernel - Re: [PATCH 1/11] Add generic helpers for arch IPI function calls

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:	Tue, 22 Apr 2008 17:38:25 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Jens Axboe <jens.axboe@...cle.com>
CC:	Peter Zijlstra <peterz@...radead.org>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, npiggin@...e.de,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH 1/11] Add generic helpers for arch IPI function calls

Jens Axboe wrote:
>> Introducing this fallback will make any usage from irq disabled context
>> deadlock prone.
>>
>> I rather like the current interface.
>>     
>
> Hmm good point, I'll back that bit out again.
>   

But then you need to fix all callers to handle errors.

Perhaps we need a new flag for failable async IPIs (or better, API).  
I'm pretty sure no one uses s_c_f_s() from irq disabled context on x86, 
since it will WARN_ON(irqs_disabled()).

-- 
error compiling committee.c: too many arguments to function

--
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/