linux-kernel - Re: [PATCH v2] x86: Remove compat vdso support

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Message-ID: <CA+55aFy_tvDbfPpD53H4aAthYD74-FPzWb4R42J7xGHa=GRbcQ@mail.gmail.com>
Date:	Tue, 11 Mar 2014 10:07:39 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	"H. Peter Anvin" <hpa@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stefani Seibold <stefani@...bold.net>,
	"the arch/x86 maintainers" <x86@...nel.org>,
	Dave Jones <davej@...hat.com>,
	Martin Runge <Martin.Runge@...de-schwarz.com>,
	Andreas Brief <Andreas.Brief@...de-schwarz.com>
Subject: Re: [PATCH v2] x86: Remove compat vdso support

On Tue, Mar 11, 2014 at 9:45 AM, Andy Lutomirski <luto@...capital.net> wrote:
>
> We could even just relocate the damn thing wherever it ends up.  That
> will waste one page of memory per process, though.

I don't think we need to worry about the one page per process.  So
*if* it is true that nobody actually cares about the exact address,
maybe that's the right solution.

I still don't get why people want to mess with the page in the first
place, though.

              Linus
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