linux-kernel - Re: 2.6.32-rc3: low mem - only 378MB on x86

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

Message-ID: <168769.1254774707@turing-police.cc.vt.edu>
Date:	Mon, 05 Oct 2009 16:31:47 -0400
From:	Valdis.Kletnieks@...edu
To:	Tomasz Chmielewski <mangoo@...g.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why?

On Mon, 05 Oct 2009 21:42:09 +0200, Tomasz Chmielewski said:
> > Heh.  You've really squeezed yourself into a bad situation.  Go get a
> > 64-bit kernel... please.  You should be able to run 32-bit userspace
> > with a 64-bit kernel.  Do you have some 32-bit kernel component that you
> > are relying on?
> 
> Note that in such setups (64 bit kernels and 32 bit userspace) *some* 
> software will not work correctly (perhaps it's limited to tightly 
> kernel-userspace integrated software).
> 
> One example is open-iscsi - you won't run 32 bit open-iscsi userspace on 
> a 64 bit kernel (at least it was impossible a couple of months ago).

Sounds like somebody blew it on 32/64 bit combatability on a syscall,
most likely a parameter to an ioctl?

Content of type "application/pgp-signature" skipped