linux-kernel - Re: [PATCH v4] powerpc: Do not make the entire heap executable

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Message-ID: <20160822192256.GA10199@obsidianresearch.com>
Date:   Mon, 22 Aug 2016 13:22:56 -0600
From:   Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:     Denys Vlasenko <dvlasenk@...hat.com>
Cc:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Kees Cook <keescook@...omium.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Florian Weimer <fweimer@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] powerpc: Do not make the entire heap executable

On Mon, Aug 22, 2016 at 08:37:05PM +0200, Denys Vlasenko wrote:

> >Is this going to break any application ? I am asking because you
> >mentioned the patch is lightly tested.
> 
> I booted powerpc64 machine with RHEL7 installation,
> it did not catch fire.

When I authored the original patch my concern was if it had unforseen
impacts on other platforms. I know PPC32 and ARM32 work OK.

It would good to test other platforms as well.

Jason