linux-kernel - Re: Faster getcpu() and sched

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>] [day] [month] [year] [list]

Message-ID: <48E14FB5.9010405@google.com>
Date:	Mon, 29 Sep 2008 14:59:17 -0700
From:	dean gaudet <odo@...gle.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Pardo <pardo@...gle.com>, linux-kernel@...r.kernel.org,
	mbligh@...gle.com, briangrant@...gle.com, nil@...gle.com,
	jyasskin@...gle.com
Subject: Re: Faster getcpu() and sched_getcpu()

[attempting resend in plain-text only because thunderbird lost the
battle vs. vger]

dean gaudet wrote:
> Andi Kleen wrote:
>> On Mon, Sep 29, 2008 at 11:01:26AM -0700, Pardo wrote:
>>   
>>>> [Maybe disable frame pointers for vsyscall.c and the vdso?]
>>>>       
>>> IIRC, some vsyscall.c code needs them enabled, so Dean's earlier patch split
>>>     
>>
>> I don't think it really needs it.
>>
>>   
>>> vsyscall.c, creating a vsyscall_user.c for code which can run without them.
>>> Seem reasonable?
>>>     
>>
>> Seems unnecessarily complicated.
>>   
>
> i disagree that it's complicated to have two files, and disagree that
> it's unnecessary to have two files.
>
> userland code does not have the same limitations/conventions as kernel
> code.  the ABIs are completely different.
>
> -dean

--
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/