linux-kernel - Re: New vsyscall emulation breaks JITs

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Message-ID: <20110809150424.GO5782@one.firstfloor.org>
Date:	Tue, 9 Aug 2011 17:04:24 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Andrew Lutomirski <luto@....edu>
Cc:	Andi Kleen <andi@...stfloor.org>, "H. Peter Anvin" <hpa@...or.com>,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org, lueckintel@...oo.com,
	kimwooyoung@...il.com
Subject: Re: New vsyscall emulation breaks JITs

> Why do we care about pin again?

Binary compatibility is not about someone especially caring.

> 
> $ ./pin -t obj-intel64/opcodemix.so -- /bin/ls
> E:3.0 is not a supported linux release

It works with

echo "2.6.39" > /osrelease
mount --bind /osrelease /proc/sys/kernel/osrelease

-Andi

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