linux-kernel - Re: [PATCH 0/7] [RFC] hugetlb: pagetable

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]

Message-Id: <1171913691.22940.30.camel@localhost.localdomain>
Date:	Mon, 19 Feb 2007 13:34:51 -0600
From:	Adam Litke <agl@...ibm.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/7] [RFC] hugetlb: pagetable_operations API

On Mon, 2007-02-19 at 19:43 +0100, Arjan van de Ven wrote:
> On Mon, 2007-02-19 at 10:31 -0800, Adam Litke wrote:
> > The page tables for hugetlb mappings are handled differently than page tables
> > for normal pages.  Rather than integrating multiple page size support into the
> > main VM (which would tremendously complicate the code) some hooks were created.
> > This allows hugetlb special cases to be handled "out of line" by a separate
> > interface.
> 
> ok it makes sense to clean this up.. what I don't like is that there
> STILL are all the double cases... for this to work and be worth it both
> the common case and the hugetlb case should be using the ops structure
> always! Anything else and you're just replacing bad code with bad
> code ;(

Hmm.  Do you think everyone would support an extra pointer indirection
for every handle_pte_fault() call?  If not, then I definitely wouldn't
mind creating a default_pagetable_ops and calling into that.

-- 
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center

-
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/