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Re: [Qemu-devel] [PATCH v2] Build *-user targets as PIE

From: Reimar Döffinger
Subject: Re: [Qemu-devel] [PATCH v2] Build *-user targets as PIE
Date: Thu, 3 Sep 2009 14:00:10 +0200
User-agent: Mutt/1.5.20 (2009-06-14)

On Thu, Sep 03, 2009 at 03:15:17PM +0300, Kirill A. Shutemov wrote:
> Now we can drop link hack for i386 and fix text relocations on i386 host.
> v2:
>   - Add configure options do enable/disable PIE for usermode targets.
>     Disabling can be useful if you build uswing toolchain which has
>     broken PIE support. PIE for usermode targets enabled by default.

Hm. Would be nice if the commit message said more about the "why". What
is the advantage of PIE (I mean, is there something special about qemu
that makes it particularly useful)? Is there any measurable speed
difference between PIE and no PIE?
(sorry if it was explained for v1, I must have missed that one)

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