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| author | Tony Breeds <[email protected]> | 2009-09-14 19:57:02 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <[email protected]> | 2009-09-24 05:31:40 +0000 |
| commit | 144ef909c09b60c97b3c20b69ea30abd1e60e54d (patch) | |
| tree | bfade6f9d26ea4fddaf72e7c7f10102758fcacb6 /arch/powerpc/sysdev/dart_iommu.c | |
| parent | powerpc/pmc: Don't access lppaca on Book3E (diff) | |
| download | kernel-144ef909c09b60c97b3c20b69ea30abd1e60e54d.tar.gz kernel-144ef909c09b60c97b3c20b69ea30abd1e60e54d.zip | |
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 <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Diffstat (limited to 'arch/powerpc/sysdev/dart_iommu.c')
0 files changed, 0 insertions, 0 deletions