linux-kernel - Re: [PATCH] x86, um: actually mark system call tables readonly

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Message-ID: <54A861EA.1070607@nod.at>
Date:	Sat, 03 Jan 2015 22:40:58 +0100
From:	Richard Weinberger <richard@....at>
To:	Daniel Borkmann <dborkman@...hat.com>
CC:	linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] x86, um: actually mark system call tables readonly

Am 03.01.2015 um 13:11 schrieb Daniel Borkmann:
> Commit a074335a370e ("x86, um: Mark system call tables readonly") was
> supposed to mark the sys_call_table in UML as RO by adding the const,
> but it doesn't have the desired effect as it's nevertheless being placed
> into the data section since __cacheline_aligned enforces sys_call_table
> being placed into .data..cacheline_aligned instead. We need to use
> the ____cacheline_aligned version instead to fix this issue.

__ vs. ___ oh my...
I'll pick up this patch.

Thanks a lot Daniel!
//richard

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