Date: Fri, 8 Sep 2017 08:44:22 -0700 From: Kees Cook <keescook@...omium.org> To: Christoph Hellwig <hch@...radead.org> Cc: Tycho Andersen <tycho@...ker.com>, LKML <linux-kernel@...r.kernel.org>, Linux-MM <linux-mm@...ck.org>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>, Marco Benatto <marco.antonio.780@...il.com>, Juerg Haefliger <juerg.haefliger@...onical.com>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "x86@...nel.org" <x86@...nel.org> Subject: Re: [PATCH v6 10/11] mm: add a user_virt_to_phys symbol On Fri, Sep 8, 2017 at 12:55 AM, Christoph Hellwig <hch@...radead.org> wrote: > On Thu, Sep 07, 2017 at 11:36:08AM -0600, Tycho Andersen wrote: >> We need someting like this for testing XPFO. Since it's architecture >> specific, putting it in the test code is slightly awkward, so let's make it >> an arch-specific symbol and export it for use in LKDTM. > > We really should not add an export for this. > > I think you'll want to just open code it in your test module. Isn't that going to be fragile? Why not an export? -Kees -- Kees Cook Pixel Security
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