linux-kernel - Re: [3.1 patch] x86: default to vsyscall=native

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:	Mon, 10 Oct 2011 13:48:40 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	richard -rw- weinberger <richard.weinberger@...il.com>
Cc:	Andrew Lutomirski <luto@....edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Adrian Bunk <bunk@...sta.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [3.1 patch] x86: default to vsyscall=native


* richard -rw- weinberger <richard.weinberger@...il.com> wrote:

> From UML's point of view the current situation is odd. UML will no 
> longer run on top of a default 3.1 kernel.

This needs to be fixed (perhaps worked around in UML if that's 
possible and if you agree with that) - or barring a real obvious fix 
needs to be reverted to the last-known-working state. We are in -rc9 
so nothing but really, really obvious patches can be applied.

> Why is this odd? One of the major reasons why people are still 
> using UML is because you can run it as non-privileged user on any 
> x86 Linux host. An user which has root privileges can setup and use 
> KVM which is much nicer than UML...

No, your complaint is entirely justified.

Andrew?

Thanks,

	Ingo
--
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/