linux-kernel - Re: [PATCH] x86: mtrr: don't modify RdDram/WrDram bits of fixed MTRRs

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: <86802c440903121124o10439dcdvf8b9fa0b37c62062@mail.gmail.com>
Date:	Thu, 12 Mar 2009 11:24:12 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Andreas Herrmann <andreas.herrmann3@....com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	trenn@...e.de
Subject: Re: [PATCH] x86: mtrr: don't modify RdDram/WrDram bits of fixed MTRRs

On Thu, Mar 12, 2009 at 4:41 AM, Andreas Herrmann
<andreas.herrmann3@....com> wrote:
> On Thu, Mar 12, 2009 at 01:01:26AM -0700, Yinghai Lu wrote:
>> wonder if you could add one dmi check to tell the user that bios is
>> buggy, ask vendor fixed BIOS
>> and skip fixed mtrr sync.
>
> There seem to be several systems affected that do not hide
> RdMem/WrMem bits from OS.
>
>  (Causing Suspend/resume problem:)
> - Acer Ferrari 1000
> - Acer Ferrari 5000
>  (Causing kernel freeze:)
> - Asus M51TR-AP003C notebook
> - Asus M51Ta notebook
> - Asus M3A-H/HDMI mobo

they didn't run bios testsuite or bios testsuite miss that checking?

YH
--
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/