Thread (2 messages) 2 messages, 2 authors, 2018-05-23

Re: [PATCH v3 23/27] x86/modules: Adapt module loading for PIE support

From: Thomas Garnier via Virtualization <hidden>
Date: 2018-05-23 22:01:38

On Wed, May 23, 2018 at 2:27 PM Randy Dunlap [off-list ref] 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:
quoted
Adapt module loading to support PIE relocations. Generate dynamic GOT if
a symbol requires it but no entry exist in the kernel GOT.
                                     exists
quoted
Position Independent Executable (PIE) support will allow to extended the
                                                 will allow us to extend
the
quoted
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.


quoted
Signed-off-by: Thomas Garnier <redacted>
---
 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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