On Mon, 2017-05-29 at 07:39:40 UTC, Nicholas Piggin wrote: > Very large kernels may require linker stubs for branches from HEAD > text code. The linker may place these stubs before the HEAD text > sections, which breaks the assumption that HEAD text is located at 0 > (or the .text section being located at 0x7000/0x8000 on Book3S > kernels). > > Provide an option to create a small section just before the .text > section with an empty 256 - 4 bytes, and adjust the start of the .text > section to match. The linker will tend to put stubs in that section > and not break our relative-to-absolute offset assumptions. > > This causes a small waste of space on common kernels, but allows large > kernels to build and boot. For now, it is an EXPERT config option, > defaulting to =n, but a reference is provided for it in the build-time > check for such breakage. This is good enough for allyesconfig and > custom users / hackers. > > Signed-off-by: Nicholas Piggin <npig...@gmail.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/951eedebcdea06fdcc742c82dc3475 cheers
