linux-kernel - Re: [PATCH] utilities: add helper functions for safe 64-bit integer operations as 32-bit halves

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

Message-ID: <20070422123556.GA28850@infradead.org>
Date:	Sun, 22 Apr 2007 13:35:56 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"John Anthony Kazos Jr." <jakj@...-k-j.com>,
	James Bottomley <James.Bottomley@...elEye.com>,
	"Cameron, Steve" <Steve.Cameron@...com>,
	"Miller, Mike (OS Dev)" <Mike.Miller@...com>,
	Hisashi Hifumi <hifumi.hisashi@....ntt.co.jp>,
	jens.axboe@...cle.com, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org, trivial@...nel.org
Subject: Re: [PATCH] utilities: add helper functions for safe 64-bit integer operations as 32-bit halves

On Sun, Apr 22, 2007 at 01:38:23PM +0100, Alan Cox wrote:
> > > > over-engineering. Call it sector_upper32() do it the simple way and stop
> > > > trying to solve a problem we don't have
> > > 
> > > James said we have the same problem with dma_addr_t.
> > 
> > Yes.  It's in fact the far more common case and we have a bread of
> > macros dealing with the issue in various drivers.
> 
> So we still only need it for unsigned 32/64bit values ?

Yes.
-
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/