linux-kernel - Re: [PATCH v4 3/7] vmalloc: Add text_alloc() and text

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200723222455.GB12405@linux.intel.com>
Date:   Fri, 24 Jul 2020 01:24:55 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "open list:MEMORY MANAGEMENT" <linux-mm@...ck.org>
Subject: Re: [PATCH v4 3/7] vmalloc: Add text_alloc() and text_free()

On Fri, Jul 17, 2020 at 05:52:45PM +0900, Masami Hiramatsu wrote:
> On Fri, 17 Jul 2020 06:04:17 +0300
> Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com> wrote:
> 
> > Introduce functions for allocating memory for dynamic trampolines, such
> > as kprobes. An arch can promote the availability of these functions with
> > CONFIG_ARCH_HAS_TEXT_ALLOC. Provide default/fallback implementation
> > wrapping module_alloc() and module_memfree().
> 
> Doesn't it depend on CONFIG_MODULE?

The idea would be that arch specifically promotes that it has text
allocator that is not dependent on module subsystem.

E.g. like the patch set does for x86.

/Jarkko