Re: [PATCH 3/5] kbuild: add arch specific post-module-link pass
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From: Sam Ravnborg <hidden>
Date: 2016-08-06 20:16:34
Also in:
linux-arch, linux-kbuild
On Fri, Aug 05, 2016 at 10:12:01PM +1000, Nicholas Piggin wrote:
quoted hunk ↗ jump to hunk
Add an option for architectures to pass over modules after they are linked. powerpc will use this to fix up alternate instruction patch relocations. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- Documentation/kbuild/makefiles.txt | 6 ++++++ Makefile | 1 + scripts/Makefile.modpost | 8 ++++++++ 3 files changed, 15 insertions(+)diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 13f888a..f6c065b 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt@@ -952,6 +952,12 @@ When kbuild executes, the following steps are followed (roughly): $(KBUILD_ARFLAGS) set by the top level Makefile to "D" (deterministic mode) if this option is supported by $(AR). + KBUILD_MODPOST_TOOL Arch-specific command to run after module link + + $(KBUILD_MODPOST_TOOL) is used to add an arch-specific pass over + modules after their final link. E.g., powerpc uses this to adjust + relative branches of "alternate code patching" sections. +
This needs documentation in kbuild.txt, where there is a nearly full lst of KBUILD_ variables. Sam