linux-kernel - Re: Adding kmap_atomic_prot_pfn (was: [git pull] drm patches for 2.6.27-rc1)

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: <alpine.LFD.2.00.0810231424220.3287@nehalem.linux-foundation.org>
Date:	Thu, 23 Oct 2008 14:24:52 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Keith Packard <keithp@...thp.com>, mingo@...e.hu,
	nickpiggin@...oo.com.au, airlied@...ux.ie,
	linux-kernel@...r.kernel.org, jbarnes@...tuousgeek.org,
	dri-devel@...ts.sf.net, yinghai@...nel.org
Subject: Re: Adding kmap_atomic_prot_pfn  (was: [git pull] drm patches for
 2.6.27-rc1)


On Thu, 23 Oct 2008, Andrew Morton wrote:
> 
> Given that all highmem-implementing archtiectures must use the same
> declaration here, we might as well put it into include/linux/highmem.h.
> Although that goes against current mistakes^Wcode.
> 
> Does powerpc32 still implement highmem?  It seems that way.  You broke
> it, no?

This really shouldn't be in highmem.h AT ALL.

The whole point of that function has absolutely nothing to do with 
highmem, and it *must* be useful on non-highmem configurations to be 
appropriate.

So I'd much rather create a new <linux/kmap.h> or something. Or just 
expose this from to <asm/fixmap.h> or something. Let's not confuse this 
with highmem, even if the implementation _historically_ was due to that.

			Linus
--
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/