linux-kernel - Re: [PATCH 06/28] nios2: Memory management

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: <20140422151458.GC1053@distanz.ch>
Date:	Tue, 22 Apr 2014 17:14:58 +0200
From:	Tobias Klauser <tklauser@...tanz.ch>
To:	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
Cc:	Ley Foon Tan <lftan@...era.com>, linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
	lftan.linux@...il.com, cltang@...esourcery.com
Subject: Re: [PATCH 06/28] nios2: Memory management

On 2014-04-22 at 16:24:43 +0200, Ezequiel Garcia <ezequiel.garcia@...e-electrons.com> wrote:
> Hi Ley Foon,
> 
> On Apr 18, Ley Foon Tan wrote:
> > +/*
> > + * PAGE_SHIFT determines the page size
> > + */
> > +#define PAGE_SHIFT	12
> > +#define PAGE_SIZE	4096
> > +#define PAGE_MASK	(~(PAGE_SIZE - 1))
> > +
> 
> How about something like this:
> 
> /* PAGE_SHIFT determines the page size */
> #define PAGE_SHIFT              12
> #define PAGE_SIZE               (_AC(1,UL) << PAGE_SHIFT)
> #define PAGE_MASK               (~((1 << PAGE_SHIFT) - 1))
> 
> Otherwise, the PAGE_SIZE macro above produces some warnings, IIRC.

AFAIR old nios2 GCC versions (the 4.1 version from Windriver, IIRC)
would complain about something like the above, that's the reason I added
an explicit value for PAGE_SIZE back then.

I assume with the new nios2 GCC this should no longer be necessary and
Ezequiel's fix should be fine.
--
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/