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| author | Michael Ellerman <mpe@ellerman.id.au> | 2022-03-07 13:34:32 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-03-07 13:34:32 +0100 |
| commit | 4bc06c59f62d3d376294f92cf808fc889b3ff431 (patch) | |
| tree | c5b177975b0f7da164e63f0188665d6d245ff073 /arch/powerpc/kernel/ptrace | |
| parent | powerpc/lib/sstep: Fix build errors with newer binutils (diff) | |
| parent | lkdtm: Add a test for function descriptors protection (diff) | |
| download | linux-4bc06c59f62d3d376294f92cf808fc889b3ff431.tar.xz linux-4bc06c59f62d3d376294f92cf808fc889b3ff431.zip | |
Merge branch 'topic/func-desc-lkdtm' into next
Merge a topic branch we are maintaining with some cross-architecture
changes to function descriptor handling and their use in LKDTM.
From Christophe's cover letter:
Fix LKDTM for PPC64/IA64/PARISC
PPC64/IA64/PARISC have function descriptors. LKDTM doesn't work on those
three architectures because LKDTM messes up function descriptors with
functions.
This series does some cleanup in the three architectures and refactors
function descriptors so that it can then easily use it in a generic way
in LKDTM.
Diffstat (limited to 'arch/powerpc/kernel/ptrace')
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c index c43f77e2ac31..1212a812a7ab 100644 --- a/arch/powerpc/kernel/ptrace/ptrace.c +++ b/arch/powerpc/kernel/ptrace/ptrace.c @@ -445,4 +445,10 @@ void __init pt_regs_check(void) * real registers. */ BUILD_BUG_ON(PT_DSCR < sizeof(struct user_pt_regs) / sizeof(unsigned long)); + +#ifdef PPC64_ELF_ABI_v1 + BUILD_BUG_ON(!IS_ENABLED(CONFIG_HAVE_FUNCTION_DESCRIPTORS)); +#else + BUILD_BUG_ON(IS_ENABLED(CONFIG_HAVE_FUNCTION_DESCRIPTORS)); +#endif } |