linux-kernel - Re: howto use ioremap

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: <20080602191832.0858eff9@infradead.org>
Date:	Mon, 2 Jun 2008 19:18:32 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	Brice Goglin <brice@...i.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org,
	"venkatesh.pallipadi@...el.com" <venkatesh.pallipadi@...el.com>
Subject: Re: howto use ioremap_wc?

On Mon, 02 Jun 2008 18:27:31 +0200
Brice Goglin <brice@...i.com> wrote:


> 
> Agreed, that would be nice!
> 
> >From what we discussed here after your reply, our plan is now to just
> replace
>     ioremap+mtrr_add

which doesn't work as ioremap() may/will force uncached ;)


> with
>     ioremap_wc+mtrr_add
> 
> If mtrr_add() is moved into ioremap_wc(), we'll remove it from
> myri10ge. For now, when PAT is enabled, we may have PAT + MTRR both
> doing WC, but I don't think it can break anything, right?

Both having WC is nicely consistent and the right thing happens...

-- 
If you want to reach me at my work email, use arjan@...ux.intel.com
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
--
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/