mirror of https://gitee.com/openkylin/linux.git
63c40436a1
With the general-instruction extension facility (z10) a couple of instructions with a pc-relative long displacement were introduced. The kprobes support for these instructions however was never implemented. In result, if anybody ever put a probe on any of these instructions the result would have been random behaviour after the instruction got executed within the insn slot. So lets add the missing handling for these instructions. Since all of the new instructions have 32 bit signed displacement the easiest solution is to allocate an insn slot that is within the same 2GB area like the original instruction and patch the displacement field. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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