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Date: Wed, 23 May 2018 15:01:38 -0700
From: Thomas Garnier <thgarnie@...gle.com>
To: Randy Dunlap <rdunlap@...radead.org>
Cc: Herbert Xu <herbert@...dor.apana.org.au>, "David S . Miller" <davem@...emloft.net>,
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Subject: Re: [PATCH v3 23/27] x86/modules: Adapt module loading for PIE support
On Wed, May 23, 2018 at 2:27 PM Randy Dunlap <rdunlap@...radead.org> wrote:
> Hi,
> (for several patches in this series:)
> The commit message is confusing. See below.
Thanks for the edits, I will change the different commit messages.
> On 05/23/2018 12:54 PM, Thomas Garnier wrote:
> > Adapt module loading to support PIE relocations. Generate dynamic GOT if
> > a symbol requires it but no entry exist in the kernel GOT.
> exists
> >
> > Position Independent Executable (PIE) support will allow to extended the
> will allow us to extend
the
> > KASLR randomization range below the -2G memory limit.
> Does that say "below th negative 2G memory limit"?
> I don't get it.
Yes, below 0xffffffff80000000 basically. I think I will just say that.
> >
> > Signed-off-by: Thomas Garnier <thgarnie@...gle.com>
> > ---
> > arch/x86/Makefile | 4 +
> > arch/x86/include/asm/module.h | 11 ++
> > arch/x86/include/asm/sections.h | 4 +
> > arch/x86/kernel/module.c | 181 +++++++++++++++++++++++++++++++-
> > arch/x86/kernel/module.lds | 3 +
> > 5 files changed, 198 insertions(+), 5 deletions(-)
> > create mode 100644 arch/x86/kernel/module.lds
> Thanks,
> --
> ~Randy
--
Thomas
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