linux-kernel - Re: PATCH] x86_64: make bootmap

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200801310402.14912.ak@suse.de>
Date:	Thu, 31 Jan 2008 04:02:14 +0100
From:	Andi Kleen <ak@...e.de>
To:	Yinghai Lu <Yinghai.Lu@....com>
Cc:	Ingo Molnar <mingo@...e.hu>, Christoph Lameter <clameter@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: PATCH] x86_64: make bootmap_start page align v4

> I don't think so, that is setup_node_bootmem's problem.
>
> it is supposed to round_up instead of just do PAGE_SHIFT...
>
> other caller will just use the address instead change it page.

You're right. In this case it really is the best way to round up in the 
caller. I retract my earlier objection.

That said there is not really any true requirement for the bootmem
map to be page aligned (AFAIK) so an alternative might be to 
fix the bootmem interface to not take a PFN. But that would be a 
much more intrusive patch because you would need to fix 
other architectures too or add compat wrappers.

-Andi
--
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/