From: Tony Breeds Date: Mon, 14 Sep 2009 19:57:02 +0000 (+0000) Subject: powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE X-Git-Tag: v2.6.32-rc1~29^2~13 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=144ef909c09b60c97b3c20b69ea30abd1e60e54d;p=pandora-kernel.git powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE When using CONFIG_RELOCATABLE, we build the kernel as a position independent executable. The kernel then uses a little bit of relocation code to relocate itself. That code only deals with R_PPC64_RELATIVE relocations though. If for some reason you use assembly constructs such as LOAD_REG_IMMEDIATE() to load the address of a symbol, you'll generate different kinds of relocations that won't be processed properly and bad things will happen. (We have 2 such bugs today). The perl script tries to filter out "known" bad ones. It's possible that we are missing some in the case of a weak function that nobody implements, we'll see if we get false positive and fix it. Signed-off-by: Tony Breeds Signed-off-by: Benjamin Herrenschmidt --- Reading git-diff-tree failed