linux-kernel - Re: [PATCH 26/26] x86, pkeys: Documentation

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Message-ID: <560E6F5C.4040302@redhat.com>
Date:	Fri, 2 Oct 2015 13:49:48 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dave Hansen <dave@...1.net>
Cc:	Kees Cook <keescook@...gle.com>, Ingo Molnar <mingo@...nel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andy Lutomirski <luto@...nel.org>,
	Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH 26/26] x86, pkeys: Documentation



On 02/10/2015 00:48, Linus Torvalds wrote:
> It's quite likely that you will find that compilers put read-only
> constants in the text section, knowing that executable means readable.

Not on x86 (because it has large immediates; RISC machines and s390 do
put large constants in the text section).

But at the very least jump tables reside in the .text seection.

Paolo
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