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Message-ID: <20160623171037.GB17372@redhat.com>
Date: Thu, 23 Jun 2016 19:10:37 +0200
From: Oleg Nesterov <oleg@...hat.com>
To: Andy Lutomirski <luto@...capital.net>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Andy Lutomirski <luto@...nel.org>,
the arch/x86 maintainers <x86@...nel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
Borislav Petkov <bp@...en8.de>, Nadav Amit <nadav.amit@...il.com>,
Kees Cook <keescook@...omium.org>, Brian Gerst <brgerst@...il.com>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>,
Josh Poimboeuf <jpoimboe@...hat.com>, Jann Horn <jann@...jh.net>,
Heiko Carstens <heiko.carstens@...ibm.com>
Subject: Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86,
core)
On 06/23, Andy Lutomirski wrote:
>
> That sounds a bit more fragile than I'm really comfortable with,
> although it'll at least oops reliably if we get it wrong.
>
> But I'm planning on moving ti->flags (and the rest of thread_info,
> either piecemeal or as a unit) into task_struct on architectures that
> opt in,
I agree, this looks better. probably it should not be that hard to fix
GET_THREAD_INFO/etc, but you know this much better than me.
Oleg.
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