linux-kernel - Re: [PATCH] powerpc/mm: Implement _PAGE_SPECIAL & pte

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]

Date:	Thu, 31 Jul 2008 13:50:28 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Josh Boyer <jwboyer@...ux.vnet.ibm.com>
Cc:	linuxppc-dev list <linuxppc-dev@...abs.org>,
	Nick Piggin <npiggin@...e.de>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Kumar Gala <galak@...nel.crashing.org>
Subject: Re: [PATCH] powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 32-bit


On Jul 31, 2008, at 1:48 PM, Kumar Gala wrote:

> Implement _PAGE_SPECIAL and pte_special() for 32-bit powerpc. This  
> bit will
> be used by the fast get_user_pages() to differenciate PTEs that  
> correspond
> to a valid struct page from special mappings that don't such as IO  
> mappings
> obtained via io_remap_pfn_ranges().
>
> We currently only implement this on sub-arch that support SMP or  
> will so
> in the future (6xx, 44x, FSL-BookE) and not (8xx, 40x).
>
> Signed-off-by: Kumar Gala <galak@...nel.crashing.org>
> ---
> Nick, do you forsee using _PAGE_SPECIAL for other applications that  
> would
> be of interested to non-SMP hw?
>
> We can look at adding it into 8xx and 40x, but was being lazy as I  
> assume
> there is no point.
>
> - k

Josh,

Can you test this on 44x for me.

thanks

- k
--
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/