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]
Date:	Mon, 07 Jan 2008 17:11:42 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andi Kleen <ak@...e.de>
CC:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	Glauber de Oliveira Costa <glommer@...il.com>,
	Jan Beulich <jbeulich@...ell.com>
Subject: Re: [PATCH 1 of 8] x86: page.h: unify constants

Andi Kleen wrote:
> THREAD_ORDER should be used on 32bit too.
>
> 32bit also has the equivalent of irq stacks (quite similar) 
> and exception stacks (somewhat different). Currently they use
> other defines, but they could use the same. Also i386 has varying
> irqstack orders disabling them with 8k stacks, but that is something
> that would be best dropped and irqstacks always used imho.
> [...]
> It might be, but it's not a 64bit specific concept.
>   

OK.  That's out of the scope of these particular patches, since they're 
restricting themselves to just unifying what's there.  Another pass 
could definitely tidy a lot more up.

> Yes they do, but hardcoding that doesn't make sense because it varies.
> We already got CPUs with 36, 38, 40 and 48 bits phys size.
>
> The only size that could be hard coded would be 52 bit (theoretical max), but 
> that also doesn't make sense if all we want to do is to mask off NX.
>   

OK.  I'll see how much removing it gains us.

    J
--
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/

Powered by blists - more mailing lists