From 7aa5b018bf36f733345f8814393b48011110b555 Mon Sep 17 00:00:00 2001 From: "Naveen N. Rao" Date: Wed, 19 Apr 2017 20:59:51 +0530 Subject: powerpc/kprobes: Blacklist exception handlers Introduce __head_end to mark end of the early fixed sections and use it to blacklist all exception handlers from kprobes. mpe: We do not need to do anything special for relocatable kernels, where the exception vectors are split from the main kernel, as the split vectors are already excluded by the check for kernel_text_address(). Signed-off-by: Naveen N. Rao [mpe: Move __head_end outside #ifdef 64-bit to unbreak the 32-bit build] Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/vmlinux.lds.S | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/powerpc/kernel/vmlinux.lds.S') diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 7394b770ae1f..f6eee507e0b9 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -77,6 +77,8 @@ SECTIONS #endif } :kernel + __head_end = .; + /* * If the build dies here, it's likely code in head_64.S is referencing * labels it can't reach, and the linker inserting stubs without the -- cgit v1.2.3-59-g8ed1b