linux-kernel - Re: [RFC] x86-64: Add vsyscall=emulate|native|none option

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: <CA+55aFxFiTUUvi4bexM5sP5tYst+ae1bQTAvep43NLXpV8FUBA@mail.gmail.com>
Date:	Tue, 9 Aug 2011 12:54:20 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andy Lutomirski <luto@....edu>
Cc:	x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	lueckintel@...oo.com, kimwooyoung@...il.com,
	Ingo Molnar <mingo@...e.hu>, Borislav Petkov <bp@...en8.de>
Subject: Re: [RFC] x86-64: Add vsyscall=emulate|native|none option

On Tue, Aug 9, 2011 at 9:47 AM, Andy Lutomirski <luto@....edu> wrote:
> vsyscall=native makes vsyscalls as fast as syscalls and makes pin
> and DynamoRIO work.  vsyscall=emulate (default) preserves current
> behavior, and vsyscall=none is good for paranoid people who don't
> need their boxes to work reliably.

I think at this stage we should do this, but additionally just change
the default to 'native', avoiding the incompatibilities.

                            Linus
--
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/