linux-kernel - patch disabling use of PSE on Atom CPUs with a certain erratum

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-next>] [day] [month] [year] [list]

Message-Id: <4CADAB3A020000780001B30A@vpn.id2.novell.com>
Date:	Thu, 07 Oct 2010 10:12:58 +0100
From:	"Jan Beulich" <JBeulich@...ell.com>
To:	<hpa@...or.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: patch disabling use of PSE on Atom CPUs with a certain erratum

In commit 7a0fc404ae663776e96db43879a0fa24fec1fa3a you
disable use of PSE, but I wonder how this can take any effect on
64-bit CPUs, as they use large pages during early boot already.
Those pages, when use of PSE gets disabled, will get broken up
into 4k pages in phys_pmd_init(), thus actually increasing the
chances that you hit the erratum.

What am I missing?

Jan

--
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/