powerpc/kprobes: Blacklist exception handlers

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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 <naveen.n.rao@linux.vnet.ibm.com>
[mpe: Move __head_end outside #ifdef 64-bit to unbreak the 32-bit build]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Naveen N. Rao 2017-04-19 20:59:51 +05:30 • committed by Michael Ellerman

parent 71f6e58e5e

commit 7aa5b018bf

3 changed files with 13 additions and 0 deletions

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2

arch/powerpc/include/asm/sections.h

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9

arch/powerpc/kernel/kprobes.c

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2

arch/powerpc/kernel/vmlinux.lds.S

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