linux-kernel - Re: [PATCH 4/5] x86, mm: Add set_memory

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: <540C1C01.1000308@plexistor.com>
Date:	Sun, 07 Sep 2014 11:49:05 +0300
From:	Yigal Korman <yigal@...xistor.com>
To:	Toshi Kani <toshi.kani@...com>,
	Andy Lutomirski <luto@...capital.net>
CC:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, akpm@...uxfoundation.org,
	Arnd Bergmann <arnd@...db.de>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Juergen Gross <jgross@...e.com>,
	Stefan Bader <stefan.bader@...onical.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: Re: [PATCH 4/5] x86, mm: Add set_memory_wt() for WT

I think that what confused Andy (or at least me) is the documentation in Documentation/x86/pat.txt
If it's possible, can you please update pat.txt as part of the patch?

Thank you,
Yigal

On 04/09/2014 21:57, Toshi Kani wrote:
> On Thu, 2014-09-04 at 11:57 -0700, Andy Lutomirski wrote:
>> On Thu, Sep 4, 2014 at 11:35 AM, Toshi Kani <toshi.kani@...com> wrote:
>>> This patch adds set_memory_wt(), set_memory_array_wt(), and
>>> set_pages_array_wt() for setting range(s) of memory to WT.
>>>
>> Possibly dumb question: I thought that set_memory_xyz was only for
>> RAM.  Is that incorrect?
> It works for non-RAM ranges as well.  For instance, you can use
> set_memory_xyz() to change cache attribute for a non-RAM range mapped by
> ioremap_cache().
>
> Thanks,
> -Toshi
>
>
>
> --
> 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/

--
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/