On Fri, Aug 19, 2016 at 03:31:47PM -0700, Kees Cook wrote:
> On Fri, Aug 19, 2016 at 2:41 PM, <mcg...@kernel.org> wrote:
> > From: "Luis R. Rodriguez" <mcg...@kernel.org>
> >
> > Add a userspace sandbox to allow easy experimentation and
> > test extensions with linker tables, section ranges and the
> > new section core definitions.
> >
> > The userspace sandbox tries to mimic the Linux kernel development
> > flow as much as possible, it however relies on and uses libc. Support
> > is currently only provided to x86_64.
> >
> > v4: this patch is new in this series -- added to the kenrel as
> > suggested by Boris, as otherwise it'd be really hard to keep
> > an external userspace repository in sync.
> >
> > Signed-off-by: Luis R. Rodriguez <mcg...@kernel.org>
> > ---
> > Documentation/sections/linker-tables.rst | 4 +-
> > MAINTAINERS | 1 +
> > include/linux/tables.h | 5 +-
> > tools/Makefile | 3 +-
> > .../arch/x86/include/generated/asm/section-core.h | 1 +
> > tools/arch/x86/include/generated/ranges.h | 1 +
> > tools/arch/x86/include/generated/tables.h | 1 +
> > tools/include/asm-generic/ranges.h | 103 ++++
> > tools/include/asm-generic/section-core.h | 341 +++++++++++
> > tools/include/asm-generic/tables.h | 50 ++
>
> Aren't a bunch of these files exact duplicates of the headers in
> include/linux?
Indeed... This a userspace tools/ architecture decision that was made long ago,
so its not up to me, I am just following the strategy devised and picked up.
Refer to 7d7d1bf1d1dabe435ef50efb051724b8664749cb ("perf bench: Copy kernel
files needed to build mem{cpy,set} x86_64 benchmarks") for an example of
previous similar work. By sharing header files this enable more tools/
to be hacked on.
Luis
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