* RFC: ptrace: Enabling PTRACE_{GET,SET}REGSET calls without CONFIG_HAVE_ARCH_TRACEHOOK
@ 2011-04-01 16:47 Dave Martin
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From: Dave Martin @ 2011-04-01 16:47 UTC (permalink / raw)
To: linux-kernel; +Cc: Will Deacon, Nicolas Pitre, Ulrich Weigand, Suresh Siddha
Hi all,
I notice in kernel/ptrace.c that the generic regset ptrace calls
PTRACE_GETREGSET and PTRACE_SETREGSET are predicated on
CONFIG_HAVE_ARCH_TRACEHOOK.
However, if I'm reading the code correctly then all these calls
really depend on is regsets implemented in the target arch.
Since I'm separately proposing a regsets implementation for ARM,
it would be nice to enable these ptrace calls; but I don't think
we're ready to enable CONFIG_HAVE_ARCH_TRACEHOOK there for now.
Does anyone know whether it would be safe/straightforward to
change the #ifdef in kernel/ptrace.c to something else,
such as CORE_DUMP_USE_REGSET? I think all arches which implement
regsets define this, though I haven't researched this thoroughly.
Any views welcome.
Cheers
---Dave
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2011-04-01 16:47 RFC: ptrace: Enabling PTRACE_{GET,SET}REGSET calls without CONFIG_HAVE_ARCH_TRACEHOOK Dave Martin
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